Planet Technology Network Router GRT 402 User Manual

PLANET Technology Corp.  
GRT-101/401/402 User’s Manual  
G.SHDSL Bridge/Router  
GRT-101/GRT-401/GRT-402  
User’s Manual  
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PLANET Technology Corp.  
GRT-101/401/402 User’s Manual  
Table of Contents  
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GRT-101/401/402 User’s Manual  
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GRT-101/401/402 User’s Manual  
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GRT-101/401/402 User’s Manual  
Chapter 1 Overview  
Based on digital subscriber line (DSL) technology, PLANET’s G.SHDSL  
products, GRT series provide an affordable, flexible, efficient Internet access  
solution for SOHO customers while reducing deployment and operational  
costs from service providers. Via sending and receiving user’s datagram (often  
Internet service) over existing telephone lines, GRT series concentrates all  
traffic onto a single high-speed trunk for Internet activities or sharing a  
corporate intranet. Through the simple-yet-powerful management UI of GRT  
series, networks administrators can complete a managed network deployment  
just in seconds.  
SOFTWARE FEATURES  
z
z
Easy configuration and management with password control for various  
application environments  
Efficient IP routing and transparent learning bridge to support  
broadband Internet services  
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VPN pass-through for safeguarded connections  
DMZ host / Multi-DMZ / Multi-NAT enables multiple workstations on the  
LAN to access the Internet for the cost of IP address  
Fully ATM protocol stack implementation over SHDSL  
PPPoA and PPPoE support user authentication with PAP / CHAP /  
MS-CHAP  
z
z
z
z
z
z
SNMP management with SNMPv1 / SNMPv2 agent and MIB II  
Getting enhancements and new features via firmware upgrade  
Built-in 4-port 10/100Mbps switch on GRT-401/GRT-402  
4-wire supported in model GRT-402 double the bandwidth  
SOFTWARE SPECIFICATIONS  
ATM Protocol  
ATM adaptation layer type 5 (AAL5)  
VC multiplexing and LLC encapsulation  
Multi-protocol over AAL5 (RFC 1483/2684 bridged and routed PDU)  
Classical IP over ATM (RFC 1577 with MTU = 1500)  
Up to 8 PVCs  
Traffic shaping CBR/UBR  
UNI 3.1/4.0 PVC  
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GRT-101/401/402 User’s Manual  
I.610 OAM F5 loopback  
PPP Support  
PPP (RFC 1661)  
PPP over AAL5 (RFC 2364)  
PPP over Ethernet (RFC 2516)  
User authentication with PAP/CHAP/MS-CHAP  
Routing Capability  
Support IP/TCP/UDP/ARP/ICMP/IGMP protocols  
IP routing with static routing and RIPv1/RIPv2 (RFC1058/2453)  
IP multicast and IGMP proxy (RFC1112/2236)  
Network address translation (NAT/PAT) (RFC1631)  
NAT ALGs for ICQ/Netmeeting/MSN/Yahoo Messenger  
DNS relay and caching (RFC1034/1035)  
DHCP server (RFC2131/2132)  
Bridging  
IEEE 802.1D transparent learning bridge  
Up to 128 MAC learning addresses  
Configuration  
Local console (RS232)  
Telnet access  
Web-based GUI (HTTP)  
Multi-level password protection  
Network Management  
Web-based GUI for express setup, configuration and management  
Menu-driven interface/Command-line interface (CLI) for local console and  
Telnet access  
Password protected management and access control list for administration  
SNMP management with SNMPv1/SNMPv2c (RFC1157/1901/1905) agent  
and MIB II (RFC1213/1493)  
Software upgrade via web-browser/TFTP server  
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GRT-101/401/402 User’s Manual  
Hardware Specification  
WAN/LAN Ports  
RJ-11 SHDSL WAN port x1  
10/100Mbps LAN port x1 on GRT-101  
10/100Mbps LAN port x4 on GRT-401/GRT-402  
RJ-11 connector for WAN, RJ-45 connector for LAN  
G.SHDSL : AWG26 or higher  
Connector  
Cabling  
Requirement  
LEDs  
10 /100 Base T: UTP/STP Category 3 or 5  
SHDSL, Power Status, WAN Link and Action Status, LAN  
Link/Active (and 100M Status), Alram  
SHDSL: 64Kbps to 2.304Mbps or  
128Kbps to 4.608Mbps (for GRT-402, 4-wire  
mode)  
Speed  
LAN Switch: 10/100 Mbps  
Power  
External power adapter 9V DC, 1000mA  
Operating temperature: 0° to 45°C  
Storage temperature: -10° to 70°C  
Plastic Case  
Environmental  
Housing  
Dimension  
145 mm x 187 mm x 33 mm (L x W x H)  
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Chapter 2 Installation  
2.1 Front Panel LEDs  
The LEDs on the front panel indicate the operational status of GRT series.  
Figure 2-1 GRT-101 Front Panel  
Figure 2-2 GRT-401 Front Panel  
Figure 2-3 GRT-402 Front Panel  
The following table describes the LEDs’ functions:  
Table 2-1 GRT-101 LED Functions  
LEDs  
PWR  
Active  
On  
On  
On  
On  
Color  
Green  
Description  
Power adaptor is connected to GRT-101/GRT-401  
SHDSL line connection is established  
Transmit or received data over SHDSL link  
LAN Speed operates in 10M  
LAN Speed operates in 100M  
SHDSL connection disconnected  
LNK  
ACT  
10/ACT  
100/ACT  
ALM  
Green  
Green  
Green  
Green  
Red  
WAN  
LAN  
On  
On  
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Table 2-2 GRT-401/GRT-402 LED Functions  
LEDs  
PWR  
Active  
On  
On  
On  
On  
On  
On  
On  
On  
Color  
Green  
Description  
Power adaptor is connected to GRT-101/GRT-401  
SHDSL line connection is established  
Transmit or received data over SHDSL link  
Transmit or received data over LAN 1  
Transmit or received data over LAN 2  
Transmit or received data over LAN 3  
Transmit or received data over LAN 4  
SHDSL connection disconnected  
LNK  
ACT  
Green  
Green  
Green  
Green  
Green  
Green  
Red  
WAN  
LAN  
1
2
3
4
ALM  
2.2 Rear Panel Ports  
The connectors on the rear panel provide Power, LAN, CONSOLE and LINE  
interfaces.  
Figure 2-4 GRT-101 Rear Panel  
Figure 2-5 GRT-401/GRT-402 Rear Panel  
The following table describes the connectors’ functions:  
Table 2-3 Connector Functions  
Connectors  
Description  
Power adaptor inlet: Input voltage 9VDC  
Ethernet interface for LAN port (RJ-45)  
RS- 232C (DB9) for system configuration and maintenance  
SHDSL interface for WAN port (RJ-11)  
Reset button for factory default  
DC-IN  
LAN  
CONSOLE  
LINE  
RST  
2.3 Rear Panel Connections  
The figure shows the rear panel connections of GRT series.  
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GRT-101/401/402 User’s Manual  
The STU-R is a standalone and can able to place in desktop. All the external  
wiring shall be located at the rear panel. The LAN port is a 10 Base-T /  
100Base-TX auto-sensing and half/full duplex Ethernet interface and complied  
with IEEE 802.3 / 802.3u respectively. The console (RS-232C) interface for  
configuration is menu-driven operation and can also be configured through  
Ethernet interface by Telnet or Web-based operation.  
NB  
PC  
RJ-45 Cable  
DB-9 Cable  
Power Adpter  
Wall Jack  
Figure 2-6 Direct Connection with PC or NB  
NB  
MAC  
PC  
Mobile Device  
Server  
Wireless AP  
Switch / Hub  
Power Adpter  
Wall Jack  
Console  
Cable  
Figure 2-7 Connection with Switch or HUB  
Note: GRT-401/GRT-402 support Auto-MDI (media dependence interface) that  
auto-detect MDI or MDI-cross with link partner, a standard straight wire UTP  
cable (EIA568) can be deployed to connect to a PC or Ethernet devices like  
hub/switches. GRT-101 supports MDI interface only.  
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2.4 Setting up the hardware environment  
Step 1: Connect the power adapter to the port labeled DC-IN on the rear  
panel of the product.  
Step 2: Connect the Ethernet cable.  
If GRT-101 is directly connected to PC, the Ethernet cable has to be  
used cross over one (refer to figure 2-6). If the product is connected  
to hub or switch, be sure that the hub or switch supporting  
auto-MDI/MDI-X or not. If yes, both crossover and non-crossover  
Ethernet cable are suitable. If not, only non-crossover Ethernet cable  
could be used (refer to figure 2-7). Since GRT-401 and GRT-402’s  
LAN port supports auto-MDI/MDI-X, both crossover and  
non-crossover Ethernet cable are suitable.  
Step 3: Connect the phone cable to the product. Connect the other side of  
phone cable to wall jack.  
Step 4: Connect male end of RS-232 cable to the product and female end to  
any free COM port in PC.  
Step 5: Connect the power adapter by plugging power supply.  
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Chapter 3 Configuration  
3.1 Purpose  
This chapter provides information about configuring GRT series.  
Note: After you have completed all necessary setting for GRT series, make sure to write the new configuration to  
NVRAM by “write” command and reboot the system, or all of your changes will not take effect.  
3.2 Logon Procedure  
There are three methods to logon to GRT series: serial console, Telnet, and  
web interface. For the first time configuration, perhaps only the serial console  
mode could be used because applications requiring Internet protocol (IP)  
communication, such as Telnet and web interface, are not available unless a  
management IP is configured properly for your local networking environment.  
After connecting all the necessary cables described in Chapter 2 Installation,  
power on GRT series and select one of the following procedures to access  
GRT series.  
Note: It is recommended that only one configuration application is used to setup GRT series at any given time, that is,  
Telnet, serial console and the web management interfaces should not be used simultaneously.  
3.2.1 Serial console  
Check the connectivity of the RS-232 cable from your computer to the serial  
port of GRT series. Start your terminal access program with VT100 terminal  
emulation. Configure the serial link with baudrate of 9600, 8 data bits, no parity  
check, 1 stop bit, and no flow-control, and press the SPACE key until the login  
screen appears. When you see the login screen, you can logon to GRT series.  
User: admin  
Password: *****  
Note: If you have not set any user profile for GRT series, enter the factory default user “admin”. When the system  
prompts you for a password, type “admin” to enter GRT series.  
After you logon to GRT series and before proceeding any further, check the  
software version of GRT series by the command:  
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admin> show system  
If firmware file is downloaded from our local distributor or FTP server, please  
refer to TFTP command in the section 3.18 Software Upgrade for more  
information on how to update GRT series firmware.  
3.2.2 Telnet  
Make sure the correct Ethernet cable is used for connecting the LAN port of  
your computer to GRT series. The LAN LNK indicator on the front panel shall  
light if a correct cable is used. Starting your Telnet client with VT100 terminal  
emulation and connecting to the management IP of GRT series, wait for the  
login screen appears. When you see the login screen, you can logon to GRT  
series.  
User: admin  
Password: *****  
Note: The factory default management IP and subnet mask are of 192.168.0.1 and 255.255.255.0, respectively. To  
change these setting, see section 3.10.1 Bridge management and 3.11.1 LAN setting for routing mode operation. If  
you have not set any user profile for GRT series, enter the factory default user “admin”. When the system prompts you  
for a password, type “admin” to enter GRT series. For more security issues for remote management interfaces such  
as Telnet and web interface, see section 3.15 Management Security.  
3.2.3 Web browser  
Make sure the correct Ethernet cable is used for connecting the LAN port of  
your computer to GRT series. The LAN LNK indicator on the front panel shall  
light if a correct cable is used. Starting your web browser and connecting to the  
management IP of GRT series, wait for the login screen appears. When you  
see the login screen, you can logon to GRT series.  
Note: In this chapter, we use the GRT-101’s Web UI for the examples.  
Note: The factory default management IP and subnet mask are 192.168.0.1 and 255.255.255.0 respectively. To  
change these setting, see section 3.10.1 Bridge management and 3.11.1 LAN setting. If you have not change  
password setting for web interface, enter the factory default user “root”. When GRT prompts you for a password, type  
root”. More security issues for remote management interfaces, please refer to section 3.15 Management Security.  
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3.3 Web operation and Quick Installation  
Guide  
3.3.1 Bridge Mode  
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Web UI Configuration  
After connection via web browser, click BRIDGE and CPE Side to setup  
Bridging mode of GRT series and then click Next for the next setting.  
1. Enter WAN1 VPI: 0 and VCI: 32.  
2. Select WAN1 AAL5 Encap: LLC  
3. Enter LAN IP: 192.168.0.1  
4. Enter LAN Sub-net Mask: 255.255.255.0  
5. Enter Gateway: 192.168.0.254  
The Gateway is directly pointed to the BAS IP.  
6. Click Next  
7. The screen will prompt the new configured parameters. Check the  
parameters and click Restart, the router will reboot with the new setting or  
click Continue to configure other parameters.  
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Console Configuration  
Do the following steps:  
1 User : admin « password: admin «  
2 enable « supervisor password: root «  
3 setup « mode « Bridge «  
4 wan « Interface number (1~8) : 1 «  
Protocol « : Ethernet «  
vpi_vci : 0 «  
32 «  
encap : LLC «  
5 bridge « gateway « 192.168.0.254 «  
6 lan«address« 192.168.0.1 «  
255.255.255.0«  
7 (back to root) write « y «  
y «(reboot)  
3.3.2 Routing Mode for PPPoA and PPPoE with IP  
Sharing  
Web UI Configuration  
For Route Mode with Point-to-Point Protocol over ATM and Ethernet, follow the  
following setting. First select ROUTE and CPE Side, and then click Next for  
setting others parameters.  
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1. Enter LAN IP: 192.168.0.1  
2. Enter LAN Sub-net Mask: 255.255.255.0  
3. Host Name: SOHO  
4. DHCP Server: Enable  
5. Click Next  
6. Enter DHCP Client Start IP: 192.168.0.2  
7. Enter DHCP Client End IP: 192.168.0.51  
8. Enter DNS Server: 192.168.0.1  
9. The DNS server is embedded in GRT series.  
10. Click Next to write the new setting.  
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11. Enter WAN1 VPI: 0 and VCI: 32.  
12. Select WAN1 AAL5 Encap: LLC  
13. Select: PPPoA + NAT or PPPoE + NAT  
14. Click Next  
15. Enter user name provided by ISP: user1@net  
16. Enter Password provided by ISP: user1  
17. Re-enter Password for confirmation: user1  
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18. The screen will prompt the new configured parameters. Check the  
parameters and click Restart, the router will reboot with the new setting or  
click Continue to configure other parameters.  
Console Configuration  
Do the following steps:  
1. User : admin « password: admin «  
2. enable « supervisor password: root «  
3. setup « mode « Route «  
4. wan « Interface number (1~8) : 1 «  
protocol « PPPoA or PPPoE «  
vpi_vci: 0 «  
32 «  
encap « LLC «  
isp «account: user1@net «  
password: user1 «  
idle time out: 0 ~ 600 « (the unit is in minute)  
5. lan « address « 192.168.0.1 «  
255.255.255.0 «  
attrib « Virtual «  
6. (back to root) write « y «  
y «(reboot)  
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3.3.3 Routing Mode for IPoA or EoA  
Web UI Configuration  
For Route Mode with Classical IP over ATM and Ethernet over ATM, follow the  
following setting. First select ROUTE and CPE Side, and then click Next for  
setting others parameters.  
1. Enter LAN IP: 192.168.0.1  
2. Enter LAN Sub-net Mask: 255.255.255.0  
3. Host Name: SOHO  
4. DHCP Server: Enable  
5. Click Next  
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6. Enter DHCP Client Start IP: 192.168.0.2  
7. Enter DHCP Client End IP: 192.168.0.51  
8. Enter DNS Server: 192.168.0.1  
9. The DNS server is embedded in GRT series.  
10. Click Next to write the new setting.  
11. Enter WAN1 VPI: 0 and VCI: 32.  
12. Select WAN1 AAL5 Encap: LLC  
13. Select: IPoA, IPoA + NAT, EoA, or EoA + NAT  
14. Click Next  
15. Enter WAN1 IP: 10.1.2.1  
16. Enter WAN1 Subnet Mask: 255.255.255.0  
17. Enter Default Route Gateway: 10.1.2.2  
18. Enter DNS Server: 168.95.1.1  
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19. The screen will prompt the new configured parameters. Check the  
parameters and click Restart, the router will reboot with the new setting or  
click Continue to configure other parameters.  
Console Configuration  
Do the following steps:  
1. User : admin « password: admin «  
2. enable « supervisor password: root «  
3. setup « mode « Route «  
4. wan « Interface number (1~8) : 1 «  
protocol « IPoA or EoA «  
address « 10.1.2.1 «  
255.255.255.0 «  
vpi_vci: 0 «  
32 «  
encap « LLC «  
5. lan « address « 192.168.0.1 «  
255.255.255.0 «  
attrib « virtual «  
6. route « static « add «  
IP address: 0.0.0.0  
Subnet mask: 0.0.0.0  
Gateway: 10.1.2.2  
7. (back to root) write « y «  
y «(reboot)  
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3.3.4 LAN-to-LAN Connection with Bridge Mode  
Web UI Configuration  
STU-R (CO) side  
Click setup to setup the BRIDGE as CO Side. Follow the instruction.  
1. Enter WAN1 VPI: 0 and VCI: 32.  
2. Select WAN1 AAL5 Encap: LLC  
3. Enter LAN IP: 192.168.0.1  
4. Enter LAN Sub-net Mask: 255.255.255.0  
5. Enter Gateway: 192.168.0.2  
6. Click Next  
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7. Setup the CO Router in bridge mode (refer to bridge mode in section 2.1).  
The gateway of CO Router is pointed to LAN IP, 192.168.0.2, of CPE  
Router.  
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STU-C (CPE) side  
Follow the above instruction. The only difference in this configuration is that  
users have to choose CPE SIDE instead of CO SIDE.  
Setup the CPE Router in bridge mode. The gateway of CPE Router is pointed  
to LAN IP, 192.168.0.1, of CO Router.  
Console Configuration  
Do the following steps in STU-R side:  
1. User : admin « password: admin «  
2. enable « supervisor password: root «  
3. setup « mode « Bridge «  
shdsl « STU-R «  
4. wan « Interface number (1~8) : 1 «  
Protocol « : Ethernet «  
vpi_vci: 0 «  
32 «  
encap: LLC «  
5. lan«address« 192.168.0.1«  
255.255.255.0«  
6. (back to root) write « y «  
y «(reboot)  
Do the following steps in STU-C side:  
1. User : admin « password: admin «  
2. enable « supervisor password: root «  
3. setup « mode « Bridge «  
shdsl « STU-C «  
4. wan « Interface number (1~8) : 1 «  
Protocol « : Ethernet «  
vpi_vci : 0 «  
33 «  
encap : LLC «  
5. lan«address« 192.168.0.2 «  
255.255.255.0«  
6. (back to root) write « y «  
y «(reboot)  
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3.3.5 Advanced Setup  
Advanced configuration contains SHDSL, WAN, Bridge, Route, NAT/DMZ and  
Virtual server parameters.  
SHDSL  
You can setup the Annex type, data rate and SNEXT margin for SHDSL  
parameters in SHDSL.  
Click SHDSL  
Annex Type: There are three Annex types, Annex A, Annex B and Annex AB in  
SHDSL.  
Link Type: For GRT-402 only, support two link type, 4-wire mode with 4.608  
Mbps data rate and 2-wire mode with 2.304 Mbps data rate.  
Data Rate: you can setup the SHDSL data rate in the multiple of 64kbps.  
SHDSL SNEXT margin: the margin range is from –10 to 10.  
The screen will prompt the  
parameters that will be written in  
machine. Be sure to confirm the  
modified parameters before  
rebooting and activating these  
changes in GRT series.  
Press Restart button to restart  
GRT series working with new  
parameters or press continue to setup another parameter.  
WAN  
GRT series supports up to 8 PVCs for WAN connections. You may specify  
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these parameters in WAN configuration menu.  
The WAN Number 1 will be the parameters setup in Basic Setup. If you want to  
setup another PVC, you can configure them in WAN 2 to WAN 8.  
Please enter the  
necessary parameters.  
After inserting the  
parameters, please  
press Finish to  
complete WAN  
configuration.  
.
The screen will  
prompt the  
parameters that will  
be written in GRT  
series. Please  
confirm these  
parameters before  
writing in machine.  
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Press Restart to restart GRT series working with new parameters or press  
continue to setup another parameter.  
Bridge  
The bridge mode can be setup the static bridge parameters.  
Click Bridge to start Bridge configuration.  
Press Add to add the static bridge  
information.  
The screen will prompt the  
parameters that will be written in  
GRT series. Check the parameters  
before writing in machine.  
Press Restart to restart GRT series  
working with new parameters or press continue to setup another parameter.  
Route  
If GRT series is connected to more than one network, it may be necessary to  
set up a static route between them. A static route is a pre-determined pathway  
that network information must travel to reach a specific host or network.  
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With Dynamic Routing, you can enable GRT series to automatically adjust to  
physical changes in the network’s layout. The Cable/DSL Firewall Router,  
using the RIP protocol, determines the network packets’ route based on the  
fewest number of hops between the source and the destination. The RIP  
protocol regularly broadcasts routing information to other routers on the  
network.  
Click Route to modify the routing information.  
To modify the RIP (Routing  
information protocol) Parameters:  
RIP Mode: Enable  
Auto RIP Summary: Enable  
Press Modify  
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RIP Mode: this parameter determines  
how the product handle RIP (Routing  
information protocol). RIP allows it to  
exchange routing information with  
other router. If set to Disable, the  
gateway does not participate in any  
RIP exchange with other router. If set  
Enable, GRT series broadcasts the  
routing table of GRT series on the  
LAN and incoporates RIP broadcast by other routers into it’s routing table. If set  
silent, GRT series does not broadcast the routing table, but it accepts RIP  
broadcast packets that it receives.  
RIP Version: It determines the format  
and broadcasting method of any RIP  
transmissions by the gateway.  
RIP v1: it only sends RIP v1 messages  
only.  
RIP v2: it send RIP v2 messages in  
multicast and broadcast format.  
Authentication required.  
None: for RIP, there is no need of  
authentication code.  
Password: the RIP is protected by  
password, authentication code.  
MD5: The RIP will be decoded by  
MD5 than protected by password,  
authentication code.  
Poison Reserve is for the purpose of  
promptly broadcast or multicast the  
RIP while the route is changed. (ex  
shuting down one of GRT series in  
routing table)  
Enable: machine will actively  
broadcast or multicast the  
information.  
Disable: machine will not broadcast  
or multicast the information.  
After modifying the RIP parameters, press finish.  
The screen will prompt the modified parameter. Check the parameters and  
perss Restart to restart GRT series or press Continue to setup another  
parameters.  
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NAT/DMZ  
NAT (Network Address Translation) is the translation of an Internet Protocol  
address (IP address) used within one network to a different IP address known  
within another network. One network is designated the inside network and the  
other is the outside. Typically, a company maps its local inside network  
addresses to one or more global outside IP addresses and reverse the global  
IP addresses of incoming packets back into local IP addresses. This ensure  
security since each outgoing or incoming request must go through a translation  
process, that also offers the opportunity to qualify or authenticate the request or  
match it to a previous request. NAT also conserves on the number of global IP  
addresses that a company needs and lets the company to use a single IP  
address of its communication in the Internet world.  
DMZ (demilitarized zone) is a computer host or small network inserted as a  
“neutral zone” between a company private network and the outside public  
network. It prevents outside users from getting direct access to a server that  
has company private data.  
In a typical DMZ configuration for an enterprise, a separate computer or host  
receives requests from users within the private network to access via Web sites  
or other companies accessible on the public network. The DMZ host then  
initiates sessions for these requests to the public network. However, the DMZ  
host is not able to initiate a session back into the private network. It can only  
forward packets that have already been requested.  
Users of the public network outside the company can access only the DMZ  
host. The DMZ may typically also have the company’s Web pages so these  
could serve the outside world. However, the DMZ provides access to no other  
company data. In the event that an outside user penetrated the DMZ host’s  
security, the Web pages might be corrupted, but no other company information  
would be exposed.  
Press NAT/DMZ to setup the parameters.  
If you want to enable the NAT/DMZ  
functions, click Enable. Enable the  
DMZ host Function is used the IP  
address assigned to the WAN for  
enabling DMZ function for the  
virtual IP address.  
Multi-DMZ: Some users who have  
two or more global IP addresses  
assigned by ISP can be used the  
multi DMZ. The table is for the  
mapping of global IP address and  
virtual IP address.  
Multi-NAT: Some of the virtual IP  
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addresses (eg: 192.168.0.10 ~ 192.168.0.50) collectively use two of the global  
IP addresses (eg: 69.210.1.9 and 69.210.1.10). The Multi-NAT table will be  
setup as;  
Virtual Start IP Address: 192.168.0.10  
Count: 40  
Global Start IP Address:  
69.210.1.9  
Count: 2  
Press Finish to continue.  
The screen will prompt the  
parameters that will be written in  
GRT series. Check the parameters  
before writing in GRT series. Press  
Restart to restart GRT series working with new parameters or Continue to  
configure another parameter.  
Virtual Server  
For example: Specific ports on the WAN interface are re-mapped to services  
inside the LAN. As only 69.210.1.8 (e.g., assigned to WAN from ISP) is visible  
to the Internet, but does not actually have any services (other than NAT of  
course) running on gateway, it is said to be a virtual server. Request with TCP  
made to 69.210.1.8:80 are remapped to the server 1 on 192.168.0.2:80, other  
requests with UDP made to 69.210.1.8:25 are remapped to server 2 on  
192.168.0.3:25.  
Click Virtual Server to configure the parameters.  
Type the necessary parameters  
then click Finish.  
Press Restart to restart GRT series  
or press continue to setup another  
function.  
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3.3.6 Administration  
This session introduces security and simple network management protocol  
(SNMP) and time synchronous.  
Security  
For system secutiry, suggest to change the default user name and password in  
the first setup otherwise unauthorized persons can access GRT series and  
change the parameters.  
There are three ways to configure GRT series, Web browser, telnet and serial  
console.  
Press Security to setup the parameters.  
For greater security, change the  
Supervisor ID and password for the  
gateway. If you don’t set them, all  
users on your network can be able to  
access the gateway using the default  
IP and Password root.  
You can authorize five legal users to  
access GRT series via telnet or  
console. There are two UI modes,  
menu driven mode and command  
mode to configure GRT series.  
Legal address pool will setup the legal  
IP addresses from which authorized  
person can configure the gateway.  
This is the more secure function for  
network administrator to setup the  
legal address of configuration.  
Click Finish to finish the setting.  
The browser will prompt the  
configured parameters and check it  
before writing into GRT series.  
Press Restart to restart the gateway  
working with the new parameters and press Continue to setup other  
parameters.  
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SNMP  
Simple Network Management Protocol (SNMP) is the protocol not only  
governing network management, but also the monitoring of network devices  
and their functions.  
GRT series can generate SNMP traps to indicate alarm conditions, and it relies  
on SNMP community strings to implement SNMP security. This gateway  
support MIB II.  
Click SNMP to configure the parameters.  
In the table of current community pool,  
you can setup the access authority.  
In the table of current trap host pool,  
you can setup the trap host.  
Press Modify to modify the community  
pool.  
SNMP status: Enable  
Access Right: Deny for deny all access  
Access Right: Read for access read  
only  
Access Right: Write for access read  
and write.  
Community: it serves as password for  
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access right.  
After configuring the community pool, press OK.  
Click Modify to modify the trap host  
pool.  
Version: select version for trap host.  
IP: type the trap host IP  
Community: type the community  
password.  
Press OK to finish the setup.  
The browser will prompt the configured parameters and check it before writing  
into GRT series.  
Press Restart to restart the gateway working with the new parameters and  
press Continue to setup other parameters.  
Time Sync  
Time synchronization is an essential element for any business that relies on an  
IT system. The reason for this is that these systems all have clocks that are the  
source of time for files or operations they handle. Without time synchronization,  
time on these systems varies with each other or with the correct time and this  
can cause-, firewall packet filtering schedule processes to fail, security to be  
compromised, system log exposures with wrong data.  
Click TIME SYNC.  
There are two synchronization  
modes: Sample Network Time Protocol (SNTP) and synchronization with PC.  
For synchronization with PC, select Sync with PC. The gateway will  
synchronize the time with the  
connecting PC.  
SNTP is the acronym for Simple  
Network Time Protocol, which is  
an adaptation of the Network  
Time Protocol (NTP) used to  
synchronize computer clocks in  
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the Internet. SNTP can be used when the ultimate performance of the full NTP  
implementation.  
For SNTP, select SNTP v4.0.  
SNTP service: Enable  
Time Server: All of the time server around the world can be used but suggest  
to use the time server nearby.  
Time Zone: you have to choose the right time zone.  
Press Finish to finish the setup. The browser will prompt the configured  
parameters and check it before writing into GRT series.  
Config Tool  
This configuration tool has three functions: load Factory Default, Restore  
Configuration and Backup Configuration.  
Press Config Tool.  
Choose the function and then press finish.  
¾
Load Factory Default function: it will load the factory default parameters to  
the gateway.  
Note: If this function is chosen, and activated. All of the settings in GRT series  
will be restored to factory default configurations.  
¾
Restore Configuration: Sometime the configuration will be crushed  
unintentionally. Restore configuration will help you to recover the backup  
configuration easily.  
Click Finish after selecting Restore Configuration.  
Browse the route of backup file then press finish. GRT series will  
automatically restore the saved configuration.  
¾
Backup Configuration: After  
configuration, suggest to use  
the function to backup your  
router parameters in the PC.  
Select the Backup  
Configuration and then press  
Finish.  
Browse the place of backup file named backup. Press Finish. GRT series will  
automatically backup the configuration.  
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Upgrade  
You can upgrade the gateway using the upgrade function. Press Upgrade.  
Browse the file and press OK  
button to upgrade. The system will  
reboot automatically after finishing.  
Restart  
For restarting GRT series, click the Restart in UTILITY menu.  
Press Restart to reboot GRT  
series.  
3.3.7 Status  
You can monitor the SHDSL status including mode, Tx power and Bitrate and  
Performance information including SNR margin, atteunation and CRC error  
count.  
LAN status will prompt the MAC address, IP address, Subnet mask and DHCP  
client table.  
WAN status will display the WAN interface information.  
You can view the routing table in the status of route.  
Interface status inculdes LAN and WAN statistics information.  
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3.4 Command Line Interface  
For serial console and Telnet management, GRT series implements two  
operational interfaces: command line interface (CLI) and menu driven interface.  
The CLI mode provides users a simple interface, which is better for working  
with script file. The menu driven interface is a user-friendly interface to general  
operations. The command syntax for CLI is the same as that of the menu  
driven interface. The only difference is that the menu driven interface shows  
you all of available commands for you to select. You don’t need to remember  
the command syntax and save your time on typing the whole command line.  
The following figure gives you an example of the menu driven interface. In the  
menu, you scroll up/down by pressing key I / K, select one command by key L,  
and go back to a higher level of menu by key J. For example, to show the  
system information, just logon to GRT series, move down the cursor by  
pressing key K twice and select “show” command by key L, you shall see a  
submenu and select “system” command in this submenu, then the system will  
show you the general information.  
In this chapter, all configuration procedures are explained by command line  
examples with necessary parameters. When operating in the menu driven  
interface, just select the corresponding command items from the menu  
hierarchy to configure the same setting.  
Note: GRT series invokes menu driven interface when first time logon with default user profile “admin”. Both  
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interfaces have on-line help information. To get on-line help, type “?” for CLI mode or press CTRL+Q for menu driven  
interface.  
3.4.1 Multi-level password protection  
When you login via serial console or Telnet, GRT series defaults to a program  
execution (read-only) privileges to you. To change the configuration and write  
changes to nonvolatile RAM (NVRAM), you must work in enable mode. Follow  
the steps below to invoke the enable mode:  
admin> enable  
Supervisor password: ****  
Note: The supervisor password is the same as that for web management interface. If you have not change password  
setting for the web interface of GRT series, enter “root” to enter GRT series. For more security issues for remote  
management interfaces such as Telnet and web interface, see section 3.15 Management Security.  
You are now in enable mode. The system prompt appears:  
admin#  
Follow the steps below to change the user interface:  
To select menu driven interface for user profile 1 (default user profile), enter:  
admin# admin user modify 1 attrib menu  
The following command select CLI mode for user profile 1:  
admin# admin user modify 1 attrib command  
To save your changes enter:  
admin# write  
To enable your changes, reboot the system:  
admin# reboot  
For the menu interface, there is a method to enable CLI mode temporarily for  
script input. By pressing CTRL+U simultaneously, you can see the CLI system  
prompt in the command line window:  
Command Line Window...  
admin#  
Press CTRL+U again in the command line window to back to the menu driven  
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interface.  
Note: See section 3.14 User Profile for more information on how to add, delete, modify, and list user profile.  
3.4.2 Menu Driven Command Line Interface  
Before applying any changes into machine, it is suggested to ensure the  
modifications, and operations in GRT series’ CLI menu driven configurations.  
Following table is the main CLI menu.  
Keystroke  
[UP] or I  
[DOWN] or K  
[LEFT] or J  
[RIGHT] or L  
[ENTER]  
[TAB]  
Description  
Move to above field in the same level menu.  
Move to below field in the same lever menu.  
Move back to previous menu.  
Move forward to submenu.  
Move forward to submenu.  
To choose another parameters.  
To quit the configuring item.  
For help  
Ctrl + C  
Ctrl + Q  
3.4.3 Command Line Interface Menu Tree  
Command line menu tree are shown in the following figures. All of the  
configuration commands are placed in the subdirectories of Enable protected  
by supervisor password. On the other hand, unauthorized user cannot change  
any configurations but viewing the status and configuration of GRT series and  
using ping command to make sure machine network status.  
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To start machine configuration, please move the cursor “ >>” to enable and  
press enter key. GRT series will prompt for password for enable mode, insert  
the supervisor password. (Default supervisor password is root.) .  
----------------------------------------------------------------------  
Command: enable <CR>  
Message: Please input the following information.  
Supervisor password: ****  
----------------------------------------------------------------------  
In this sub menu, you can setup management parameters, upgrade machine  
firmware, backup and restore system configurations via utility menu.  
>> enable  
setup  
Modify command privilege  
Configure system  
status  
show  
write  
Show running system status  
View system configuration  
Update flash configuration  
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reboot  
ping  
admin  
utility  
exit  
Reset and boot system  
Packet internet groper command  
Setup management features  
TFTP upgrade utility  
Quit system  
3.4.4 Status  
You can view running system status of SHDSL, WAN, route and interface via  
status command.  
Move cursor “ >> “ to status and press enter.  
>> shdsl  
wan  
Show SHDSL status  
Show WAN interface status  
Show routing table  
route  
interface  
Show interface statistics status  
3.4.5 Show  
You can view the system information; configuration and configuration in  
command script by show command.  
Move cursor “ >> “ to show and press enter.  
>> system  
config  
Show general information  
Show all configuration  
script  
Show all configuration in command script  
3.4.6 Write  
For any changes of configuration, you must write the new configuration to  
EPROM using write command and reboot GRT series to take affect.  
Move cursor to “ >> “ to write and press enter.  
----------------------------------------------------------------------  
Command: write <CR>  
Message: Please input the following information.  
Are you sure? (y/n): y  
----------------------------------------------------------------------  
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3.4.7 Reboot  
To reboot GRT series, use reboot command. Move cursor to “ >> “ to write  
and press enter.  
---------------------------------------------------------------------  
Command: reboot <CR>  
Message: Please input the following information.  
Do you want to reboot? (y/n): y  
---------------------------------------------------------------------  
3.4.8 Ping  
Ping command will be used to test the connection of router. Move cursor “ >>  
“ to ping and press enter.  
---------------------------------------------------------------------  
Command: ping <ip> [1~65534|-t] [1~1999]  
Message: Please input the following information.  
IP address <IP> : 10.0.0.1  
Number of ping request packets to send (TAB select): 1~65534  
Data size [1~1999]: 32  
---------------------------------------------------------------------  
3.5 Administration  
You can modify the user profile, telnet access, SNMP (Simple Network  
Management Protocol), supervisor information and SNTP (Simple Network  
Time Protocol) in machine enable mode.  
For configuration the parameters, move the cursor “ >> “ to admin and press  
enter.  
>> user  
security  
Manage user profile  
Setup system security  
snmp  
passwd  
Id  
Configure SNMP parameter  
Change supervisor password  
Change supervisor ID  
sntp  
Configure time synchronization  
3.5.1 User Profile  
You can use user command to clear, modify and list the user profile. You can  
setup at most five users to access GRT series via console port or telent in user  
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profile table however users who have the supervisor password can change the  
configuration of GRT series. Move the cursor “ >> “ to user and press enter  
key.  
>> clear  
modify  
list  
Clear user profile  
Modify the user profile  
List the user profile  
You can delete the user by number using clear command. If you do not make  
sure the number of user, you can use list command to check it. Modify  
command is to modify an old user information or add a new user to user  
profile.  
3.5.2 Security  
Security command can be configured ten legal IP address for telnet access  
and port number.  
Move the cursor “ >> “ to security and press enter. The default legal address  
is 0.0.0.0. It means that there is no restriction of IP to access GRT series via  
telnet.  
>> port  
ip_pool  
Configure telent TCP port  
Legal address IP address pool  
Show security profile  
list  
3.5.3 SNMP  
Simple Network Management Protocol (SNMP) is the protocol not only  
governing network management, but also the monitoring of network devices  
and their functions. GRT series can generate SNMP traps to indicate alarm  
conditions, and it relies on SNMP community strings to implement SNMP  
security. This router support MIB II.  
Move the cursor “ >> “ to snmp and press enter.  
>> community  
trap  
Configure community parameter  
Configure trap host parameter  
3.5.4 Supervisor Password and ID  
The supervisor password and ID are the last door for security but the most  
important. Users who access GRT series via web browser, console port or  
telnet have to use the ID and password to configure GRT series. Suggest to  
change the ID and password.  
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3.5.5 SNTP  
Time synchronization is an essential element for any business that relies on an  
IT system. The reason for this is that these systems all have clocks that are the  
source of time for files or operations they handle. Without time synchronization,  
time on these systems varies with each other or with the correct time and this  
can cause- virtual server schedule processes to fail and system log exposures  
with wrong data. There are two methods to synchronize time, synchronize with  
PC or SNTPv4. If you choose synchronize with PC, GRT series will  
synchronize with PC. If you choose SNTPv4, GRT series will use the protocol  
to synchronize with the time server.  
Move the cursor “ >> “ to sntp and press enter.  
>> method  
service  
Select time synchronization method  
Tigger SNTP v4.0 service  
Configure time server 1  
time_server1  
time_server2  
time_server3  
updaterate  
time_zone  
list  
Configure time server 2  
Configure time server 3  
Configure update period  
Configure GMT time zone offset  
Show SNTP configuration  
3.6 Utility  
There are three utility tools, upgrade, backup and restore, embedded in the  
firmware. You can update the new firmware via TFTP upgrade tools and  
backup the configuration via TFTP backup tool and restore the configuration  
via TFTP restore tool. For upgrade, TFTP server with the new firmware will be  
supported by supplier but for backup and restore, you must have your own  
TFTP server to backup and restore the file.  
Move the cursor “ >> “ to utility and press enter.  
>> upgrade  
backup  
Upgrade main software  
Backup system configuration  
Restore system configuration  
Restore  
3.7 Exit  
If you want to exit the system without saving, use exit command to quit  
system.  
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3.8 Setup  
All of the setup parameters are located in the subdirectories of setup. Move the  
cursor “ >> “ to setup and press enter.  
>> mode  
shdsl  
wan  
Switch system operation mode  
Configure SHDSL parameters  
Configure WAN interface profile  
Configure transparent bridging  
Configure routing parameters  
Configure LAN interface profile  
Configure NAT/PAT parameters  
Configure DHCP parameters  
Configure DNS proxy parameters  
Configure local host name  
bridge  
route  
lan  
ip_share  
dhcp  
dns_proxy  
hostname  
default  
Restore factory default setting  
3.8.1 Mode  
The product can act as routing mode or bridging mode. The default setting is  
routing mode. You can change the system operation mode by using mode  
command. Move the cursor “ >> “ to mode and press enter.  
---------------------------------------------------------------------  
Command: setup mode <Route|Bridge>  
Message: Please input the following information.  
System operation mode (TAB select) <Route>: Route  
---------------------------------------------------------------------  
3.8.2 SHDSL  
You can setup the SHDSL parameters by the command shdsl. Move the  
cursor “ >> “ to shdsl and press enter.  
>> mode  
Configure SHDSL mode  
link (GRT-402 only) Configure SHDSL link  
n*64  
type  
clear  
margin  
Configure SHDSL data rate  
Configure SHDSL annex type  
Clear current CRC error count  
Configure SHDSL SNR margin  
There are two types of SHDSL mode, STU-R and STU-C. STU-R means the  
terminal of central office and STU-C customer premises equipment.  
GRT-402’s link type will be 2-wire or 4-wire mode according to the product.  
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4-wire product can be worked under 2-wire mode.  
You can setup the data rate by the multiple of 64Kbps- n is from 0 to 32. If you  
configure n is 0, the product will perform as adaptive mode.  
There are two types of SHDSL Annex type, Annex-A and Annex-B.  
Clear command can clear CRC error count.  
Generally, you cannot need to change SNR margin, which range is from 0 to  
10.  
3.8.3 WAN  
GRT series supports up to 8 PVC, private virtual circuit, and so you can setup  
eight WAN, WAN1 to WAN8. Move the cursor “ >> “ to wan and press enter. To  
setup WAN1, type 1.  
---------------------------------------------------------------------  
Command: setup wan <1~8>  
Message: Please input the following information.  
Interface number <1~8>: 1  
---------------------------------------------------------------------  
>> protocol  
address  
vpi_vci  
encap  
qos  
Link type protocol  
IP address and subnet mask  
Configure VPI/VCI value  
Configure encapsulation type  
Configure VC QoS  
isp  
list  
Configure account name, password and idle time  
WAN interface configuration  
There are four types of protocols, IPoA, EoA, PPPoA and PPPoE, which is  
supported by your ISP.  
For PPPoA and PPPoE, you do not need to setup IP address and subnet  
mask.  
There is an unique VPI and VCI value for Internet connection supported by ISP.  
The range of VIP is from 0 to 255 and VCI from 0 to 65535.  
There are two types of encapsulation types, VC-Mux and LLC.  
You can setup virtual circuit quality of service, VC QoS, using qos command.  
There are two QoS class, UBR and CBR. The peak cell rate can be configured  
from 64kbps to 2400kbps.  
ISP command can configure account name, password and idle time. Idle time  
are from 0 minute to 300 minutes.  
You can review the WAN interface configuration via list command.  
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3.8.4 Bridge  
You can setup the bridge parameters in bridge command. If the product is  
configured as a router, you do not want to setup the bridge parameters. Move  
the cursor “ >> “ to bridge and press enter.  
>> gateway  
static  
Default gateway  
Static bridging table  
You can setup default gateway IP via gateway command.  
You can setup 20 sets of static bridge in static command.  
3.8.5 Route  
You can setup the routing parameters in route command. If the product is  
configured as a bridge, you do not want to setup the route parameters. Move  
the cursor “ >> “ to route and press enter.  
>> static  
RIP  
Configure static routing table  
Configure RIP tool  
You can setup 20 sets of static route in static command.  
3.8.6 LAN  
>> address  
attrib  
LAN IP address and subnet mask  
NAT network type  
3.8.7 IP share  
>> nat  
pat  
Configure network address translation  
Configure port address translation  
Configure DMZ host function  
dmz  
For more NAT, PAT and DMZ information, review NAT/DMZ section.  
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3.8.8 DHCP  
>> generic  
fixed  
Configure generic DHCP parameter  
Configure fixed host IP address list  
Show DHCP configuration  
list  
For more DHCP information, review DHCP server section.  
3.8.9 DNS proxy  
You can setup three DNS servers in the product. The number 2 and 3 DNS  
servers are option. Move cursor “ >> “ to dns_proxy and press enter.  
----------------------------------------------------------  
Command: setup dns_proxy <IP> [IP] [IP]  
Message: Please input the following information.  
DNS server 1 (ENTER for default) <168.95.1.1>: 10.0.10.1  
DNS server 2: 10.10.10.1  
DNS server 3:  
----------------------------------------------------------  
3.8.10 Host name  
Enter local host name via hostname command. Move cursor “ >> “ to  
hostname and press enter.  
-------------------------------------------------  
Command: setup hostname <name>  
Message: Please input the following information.  
Local hostname (ENTER for default) <SOHO>: test  
-------------------------------------------------  
3.8.11 Default  
If you want to restore factory default, first move the cursor “ >> “ to default and  
then press enter.  
---------------------------------------------------------------------  
Command: setup default <name>  
Message: Please input the following information.  
Are you sure? (Y/N): y  
---------------------------------------------------------------------  
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3.9 Connection Mode  
GRT series supports two connection modes: bridging and routing. Currently, it  
comes pre-configured with routing mode. Note that, routing mode and bridging  
mode cannot be used simultaneously.  
To let GRT series operate in bridging mode, type:  
admin# setup mode bridge  
To save changes enter:  
admin# write  
To enable your changes, reboot the system:  
admin# reboot  
To set GRT series operating in routing mode, enter:  
admin# setup mode route  
To save your changes enter:  
admin# write  
To enable your changes, reboot the system:  
admin# reboot  
3.10 Bridging Mode  
Note: This section is for bridging mode operation only.  
When GRT series operates in bridging mode, it behaves like a wire connecting  
a local PC directly to a service provider’s network. Bridge data is encapsulated  
using the RFC1483 protocol to enable data transport. GRT series currently  
supports IEEE 802.1D transparent learning bridge.  
3.10.1 Bridge management  
You can manage GRT series using Telnet either from LAN interface or from  
Wide Area Network (WAN) interface. The following procedure shows how to  
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set up GRT series for bridging management with IP = 192.168.0.1, subnet  
mask = 255.255.255.0, and gateway IP = 192.168.0.254:  
admin# setup lan 1 address 192.168.0.1 255.255.255.0  
admin# setup bridge gateway 192.168.0.254  
The IP address should be an IP address on the same network as that of the  
“far-end” station. The gateway IP address should be the IP address of the  
far-end station that is used to route the LAN packets.  
To save your changes enter:  
admin# write  
To enable your changes, reboot the system:  
admin# reboot  
Note: The IP address that is assigned to GRT series, must be an IP address that is on the same network segment  
(subnet) that is being bridged. Assigning IP addresses in this fashion enables access via Telnet/web to  
GRT-101/GRT-401 for management functions. See section 3.15 Management Security for more information on  
security issues.  
3.10.2 Static bridge table  
This GRT series supports a transparent learning bridge, which will establish  
the bridge table automatically from the incoming data. Therefore, it is  
unnecessary to setup the static bridge table manually. In case you need to  
arrange the static bridge table, see the description below.  
The following commands show how to setup the static bridge table by “add”  
command.  
admin# setup bridge static add lan_port forward  
admin# setup bridge static add wan1_port filter  
admin# setup bridge static add mac 00:30:4f:00:00:01  
Note: You must perform the above procedure in the sequence as shown, i.e., port attributes first and MAC finally.  
To list the content of the table, use the “list” command:  
admin# setup bridge static list  
Static Bridging Parameters  
1. MAC Address : 00:30:4f:00:00:01  
<Interface Operation>  
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WAN 1( Filter)  
WAN 5( Filter)  
WAN 2( Filter)  
WAN 6( Filter)  
WAN 3( Filter)  
WAN 7( Filter)  
WAN 4( Filter)  
WAN 8( Filter)  
To modify the first entry in the table, use the “modify” command:  
admin# setup bridge static modify 1 mac 00:30:4f:00:00:01  
admin# setup bridge static modify 1 lan_port filter  
admin# setup bridge static modify 1 wan1_port forward  
To delete the first entry of the table, use the “delete” command:  
admin# setup bridge static delete 1  
To save your changes, enter:  
admin# write  
3.11 Routing Mode  
Note: This section is for routing mode operation only.  
Routing is often confused with bridging, which performs a similar function. The  
principal difference is that bridging occurs at a lower level (MAC layer)  
whereas routing occurs at a higher level, e.g., IP layer. And because routing  
occurs at a higher level, it can perform more complex analysis to determine the  
optimal path for the packet.  
GRT series supports IP routing, which can be static and/or RIPv1/v2 updating.  
Also, several applications, such as NAT/PAT, DHCP server, and DNS proxy,  
etc., are included for LAN management and control.  
3.11.1 LAN setting  
To setup GRT series LAN interface with IP address of 192.168.0.1 and subnet  
mask of 255.255.255.0, use the following command:  
admin# setup lan 1 address 192.168.0.1 255.255.255.0  
To save your changes, enter:  
admin# write  
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3.11.2 Static routing table  
In order to pass data through a network and onto the Internet or WAN, you  
might need to add the IP addresses of gateways to the static routing table.  
Follow the instructions below to build a static routing table manually by adding  
or deleting entries in the table.  
For example, to add a route to network address 140.182.1.0 with subnet mask  
of 255.255.255.0 via gateway at 140.182.2.254:  
admin# setup route static add 140.182.1.0 255.255.255.0 140.182.2.254  
To set a default route with gateway of 140.182.2.254, use the below command:  
admin# setup route static add 0.0.0.0 0.0.0.0 140.182.2.254  
In general, it is not recommended to add multiple entries with the format of  
default route (network address 0.0.0.0 with subnet mask of 0.0.0.0). If there  
are multiple entries with the format of default route in the static routing table,  
the system will automatically select only one entry to be the default route  
among these entries with resolvable gateway.  
Note: For most WAN protocols, a valid default route with resolvable gateway on WAN side must be set to work  
properly. However, for PPP connections, GRT series will add default route to ISP gateway automatically, and hence it  
is unnecessary to add a default route manually.  
To enable RIP updating with auto summary for routing table, type:  
admin# setup route rip generic Enable Enable  
For detailed configuration about RIPv1/RIPv2, please refer to the on-line help  
message by the following commands:  
admin# setup route rip lan 1  
admin# setup route rip wan 1  
Note: Each WAN port could be configured independently for RIPv1/RIPv2 updating of routing table.  
To show the configuration, use the list command:  
admin# setup route rip list  
To save your changes, enter:  
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admin# write  
3.11.3 NAT/PAT  
NAT can be used to share an Internet connection, to reduce the requirement  
for publicly assigned IP addresses, to expand an existing network without  
affecting existing IP based account schemes, and to hide an internal network  
schema from public networks.  
It is often used in the situation where only one IP address could be assigned  
for the network, such as a PPP connection to an local ISP, e.g., when your  
local ISP uses protocols of “PPPoA” or “PPPoE” over the ATM VC, you get a  
dynamic public IP at the WAN port from your local ISP. All requests originating  
from the LAN (private network) have their source IP addresses replaced with  
the public IP address. Only one IP address is visible from the public network.  
To setup this GRT series working for the above example, enter:  
admin# setup lan 1 attrib Virtual  
Also, make sure to delete all entries in the NAT/PAT IP pools by the following  
commands:  
admin# setup ip_share nat virtual delete <1~5>  
admin# setup ip_share nat global delete <1~5>  
admin# setup ip_share nat fixed delete <1~128>  
admin# setup ip_share pat clear <1~10>  
Note: The maximum number of hosts on the LAN (private network) is limited to be of 253 in dynamic NAT.  
To save your changes, enter:  
admin# write  
In some cases, the number of externally visible IP addresses is greater than  
one and less than the host number being hidden behind GRT series. You  
could configure GRT series such that it acts as follows. Each time a request is  
made from a host on the LAN, which is included in virtual IP pool, e.g., pool 3:  
192.168.0.2~192.168.0.25. GRT series chooses an external IP address  
already configured in the corresponding global IP pool 3 (e.g.,  
69.210.1.2~69.210.1.7, which is assigned from your local ISP) that is currently  
unused, and then performs the translation. This type of situation is only  
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possible when the number of hosts having concurrent requests to the external  
network is equal to or less than the number of external IP addresses on GRT  
series. To setup GRT series working for the above situation where WAN 1 is  
used to connect to the corresponding ISP, use the below commands:  
admin# setup lan 1 attrib Virtual  
admin# setup ip_share nat global interface 3 1  
admin# setup ip_share nat global range 3 69.210.1.2 6  
admin# setup ip_share nat virtual range 3 192.168.0.2 24  
To show the configuration, use the list command:  
admin# setup ip_share nat global list  
admin# setup ip_share nat virtual list  
Note: The IP translation only works between global and virtual IP pools with the same range number. Totally there are  
5 NAT global and 5 NAT virtual IP pools for this purpose.  
To save your changes, enter:  
admin# write  
In the above example, it might happen that packets from some hosts will be  
dropped when the number of hosts having concurrent requests to the external  
network is greater than the number of external IP addresses. If it is necessary  
to guarantee that some hosts (e.g., 192.168.0.31~192.168.0.33) can access  
Internet at any time, you can use the fixed IP address mapping pool with extra  
external IP addresses 69.210.1.8~69.210.1.10, also given from ISP via WAN  
1:  
admin# setup lan 1 attrib Virtual  
admin# setup ip_share nat fixed interface 1 1  
admin# setup ip_share nat fixed modify 1 192.168.0.31 69.210.1.8  
admin# setup ip_share nat fixed interface 2 1  
admin# setup ip_share nat fixed modify 2 192.168.0.32 69.210.1.9  
admin# setup ip_share nat fixed interface 3 1  
admin# setup ip_share nat fixed modify 3 192.168.0.33 69.210.1.10  
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To show the configuration, use the list command:  
admin# setup ip_share nat fixed list  
Note: The maximum number of entries in the NAT fixed IP address mapping pool is 128.  
To save your changes, enter:  
admin# write  
Another function provided by this GRT series NAT/PAT is the virtual server  
mapping. Specific ports on the WAN interface (e.g., WAN 1) are re-mapped to  
services inside the LAN. As only 69.210.1.8 (e.g., assigned to WAN 1 from ISP)  
is visible to the Internet, but does not actually have any services (other than  
NAT off course) running on GRT series, it is said to be a virtual server. For  
example, requests with TCP made to 69.210.1.8:80 are remapped to the  
server 1 on 192.168.0.2:80, other requests with UDP made to 69.210.1.8:25  
are remapped to server 2 on 192.168.0.3:25. To set GRT series for the above  
NAT function, use:  
admin# setup lan 1 attrib Virtual  
admin# setup ip_share pat modify 1 interface 1  
admin# setup ip_share pat modify 1 port 80  
admin# setup ip_share pat modify 1 server 192.168.0.2 80  
admin# setup ip_share pat modify 1 protocol TCP  
admin# setup ip_share pat modify 1 name httpd  
admin# setup ip_share pat modify 2 interface 1  
admin# setup ip_share pat modify 2 port 25  
admin# setup ip_share pat modify 2 server 192.168.0.3 25  
admin# setup ip_share pat modify 2 protocol UDP  
admin# setup ip_share pat modify 2 name mail  
To show the configuration, use the list command:  
admin# setup ip_share pat list  
Note: The maximum number of service mapping supported by GRT series is 10.  
To save your changes, enter:  
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admin# write  
3.11.4 DHCP server  
The DHCP server application automatically assigns IP addresses to DHCP  
clients. Follow the steps below to enable the DHCP applications. The example  
sets a DHCP server, which could service 50 DHCP clients. The available IP  
addresses for DHCP clients are located from 192.168.0.2 to 192.168.0.51. In  
this example, the LAN environment is configured with gateway of 192.168.0.1  
and subnet mask of 255.255.255.0. The IP address of 168.95.1.1 is set as a  
DNS server.  
admin# setup dhcp generic active Enable  
admin# setup dhcp generic ip_range 192.168.0.2 50  
admin# setup dhcp generic gateway 192.168.0.1  
admin# setup dhcp generic netmask 255.255.255.0  
admin# setup dhcp generic name_server1 168.95.1.1  
In most applications, the value of gateway IP address is the same as the LAN  
IP address of GRT series. The value of name server IP address should point  
towards a valid host that provides DNS lookup service. These parameters  
should be configured correctly, or computers on the LAN may not access  
Internet.  
Note: If the DNS proxy has been configured properly, the “name_server1” field in the above DHCP configuration  
should be set with the LAN IP address of GRT series.  
To save your changes, type:  
admin# write  
3.11.5 DNS proxy  
DNS is the naming system for IP based networks and the naming service that  
is used to locate computers on the Internet. A DNS proxy receives DNS  
request from computers on the LAN, translates them into the encoding on DNS  
protocol, and forwards to the real DNS server. To enable the DNS proxy,  
please correctly set up the DNS proxy so that it can point towards real DNS  
servers on the Internet. The following example shows you how to setup the IP  
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addresses of real DNS servers:  
admin# setup dns_proxy 168.95.1.1 168.95.192.1 140.92.61.55  
Note: For PPP connections, GRT series will get DNS server IPs from ISP and assign them into DNS proxy  
automatically if they have been pre-configured by the local ISP.  
The maximum number of DNS servers is limited to 3. To save your changes,  
enter:  
admin# write  
3.12 WAN and ATM Virtual Connection  
GRT series has two types of WAN ports: physical WAN port (SHDSL) and  
logical WAN ports (WAN 1~8). The physical WAN port connects GRT series to  
the WAN. The logical WAN port or ports allow you to create virtual WAN  
connections for plural destinations. When configuring the physical WAN port,  
you can change the SHDSL physical layer protocol setting. To configure  
logical WAN ports, you must provision ATM virtual connections for each logical  
connection. The instructions for each are shown below.  
3.12.1 SHDSL operation  
There are two SHDSL operation modes: STU-R and STU-C. GRT series  
supports both operation modes and automatically trains up to the ideal line  
speed. This enables the maximum operative rate as determined by the central  
office SHDSL equipment, or you could configure the connection rate directly.  
Note: Optimal line rates are dependent upon the central office equipment base and optimal line conditions.  
Follow the procedure below to change SHDSL physical layer setting.  
To set the SHDSL operation mode to STU-R, enter:  
admin# setup shdsl mode STU-R  
To set the SHDSL operation mode to STU-C, enter:  
admin# setup shdsl mode STU-C  
To set link type to 4 wire, enter:  
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Only GRT-402 support 4 wire phone line to connect, it also allow to assign link  
type by actually connection type.  
admin# setup shdsl link 4-Wire  
To set link type to 2 wire, enter:  
admin# setup shdsl link 2-Wire  
Also, GRT series allows you to assign the connection rate directly by setting  
the N parameter of “n*64” command:  
admin# setup shdsl n*64 <0~36>  
where “0” indicates that the adaptive mode will be used to automatically train  
up to the ideal line speed. The other valid value of N parameter ranges  
between 3 and 36. Do not set the N value to 1 or 2. For example, to configure  
the SHDSL physical layer data rate to 256kbps, enter:  
admin# setup shdsl n*64 4  
For different region, you might need to set up the SHDSL type to be “Annex_A”  
or “Annex_B” by the following command:  
admin# setup shdsl type Annex_B  
Note that, to let your setting take effect, you have to save your changes and  
reboot the system by enter:  
admin# write  
3.12.2 ATM virtual connection  
There are two types of ATM connections: (1) virtual paths, identified by virtual  
path identifiers (VPI); and (2) virtual circuit, identified by the combination of a  
VPI and a virtual circuit identifier (VCI). Also, there are two encapsulation  
methods for carrying bridged and routed PDUs in the payload field of ATM  
adaptation layer (AAL) type 5, which are defined in RFC 1483, multi-protocol  
encapsulation over AAL 5. The LLC encapsulation method multiplexes multiple  
protocols on a single ATM virtual circuit. Each protocol is identified in the 802.2  
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LLC header of the packet. The VC based multiplexing method carries each  
protocol on a separate ATM virtual circuit. This method is sometimes used in  
private networks, in which PVC creation is very economical.  
Note: Each VC is expressed as WAN x, where x is a number between 1 and 8. GRT series comes pre-configured with  
one ATM VC (WAN 1 with VPI/VCI = 0/32) already established. The WAN 1 port is ready to send and receive network  
traffic via IPoA protocol with LLC encapsulation. You may need to modify the pre-configured ATM VC when  
communicating across your local ISP network.  
For bridging mode operation, you should select Ethernet over ATM (RFC 1483  
bridged Ethernet) as the ATM protocol. For routing mode operation, GRT  
series supports Ethernet over ATM (RFC 1483 bridged Ethernet), IP over ATM  
(RFC 1483 routed IP/RFC 1577), PPP over ATM (RFC 2364), and PPP over  
Ethernet (RFC 2516). The following example enables the ATM VC WAN 3 with  
protocol of Ethernet over ATM:  
admin# setup wan 3 protocol Ethernet  
where the selectable parameters corresponding to the above ATM protocols  
are “Ethernet”, “IPoA”, “PPPoA”, and “PPPoE”. To disable the pre-configured  
ATM VC WAN 1, enter:  
admin# setup wan 1 protocol Disable  
The valid ranges for the VPI is from 0 to 255. For the VCI, it is between 0 and  
65535.  
The following example set the VPI/VCI = 0/135 for ATM VC WAN 3  
admin# setup wan 3 vpi_vci 0 135  
To change the encapsulation from default LLC to VC-Mux for ATM VC WAN 3  
admin# setup wan 3 encap VC-Mux  
To review the new configuration you have changed for WAN 3, type:  
admin# setup wan 3 list  
WAN Interface Parameters  
Int. Link  
IP Address/  
Netmask VPI/ VCI Encap. QoS PCR  
---- -------- ----------------------------- --------- ------ --- ----  
WAN 1 Disable  
WAN 2 Disable  
WAN 3 Ethernet 192.168.3.1/ 255.255.255.0 0/ 135 VC-Mux UBR 2400  
WAN 4 Disable  
WAN 5 Disable  
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WAN 6 Disable  
WAN 7 Disable  
WAN 8 Disable  
To save the new WAN port configuration, enter:  
admin# write  
3.12.3 ATM traffic shaping  
The objectives of ATM traffic management are to deliver quality-of-service  
(QoS) guarantees for the multimedia applications and provide overall  
optimization of network resources. Currently, GRT series supports two kinds of  
ATM QoS service: constant bit rate (CBR) and unspecified bit rate (UBR). The  
CBR connection involves a static amount of bandwidth allocated for those  
applications of video, voice, and circuit emulation. The bandwidth is  
characterized by the peak cell rate (PCR) in the configuration. The UBR  
connection allows you to define the PCR too. However, it has the lowest  
priority and is with no QoS guarantees. The range of the PCR is from 64 to  
2400Kbps.  
To set the class of the ATM traffic shaping for WAN 3 to CBR with PCR of  
512Kbps, enter:  
admin# setup wan 3 qos class CBR  
admin# setup wan 3 qos pcr 512  
To review the new configuration you have changed for WAN 3, type:  
admin# setup wan 3 list  
WAN Interface Parameters  
Int. Link  
IP Address/  
Netmask VPI/ VCI Encap. QoS PCR  
---- -------- ----------------------------- --------- ------ --- ----  
WAN 1 Disable  
WAN 2 Disable  
WAN 3 Ethernet 192.168.3.1/ 255.255.255.0 0/ 135 VC-Mux CBR 512  
WAN 4 Disable  
WAN 5 Disable  
WAN 6 Disable  
WAN 7 Disable  
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WAN 8 Disable  
To save the new WAN port configuration, enter:  
admin# write  
3.12.4 WAN IP address  
Note: This sub-section is for routing mode operation with protocol of “Ethernet” and/or “IPoA” only. For PPP  
connections, it is unnecessary to set the WAN port IP address and subnet mask.  
To set the WAN 3 with IP address of 192.168.3.3 and subnet mask of  
255.255.255.0, follow the following example:  
admin# setup wan 3 address 192.168.3.3 255.255.255.0  
To review the new configuration you have configured, type:  
admin# setup wan 3 list  
WAN Interface Parameters  
Int. Link  
IP Address/  
Netmask VPI/ VCI Encap. QoS PCR  
---- -------- ----------------------------- --------- ------ --- ----  
WAN 1 Disable  
WAN 2 Disable  
WAN 3 Ethernet 192.168.3.3/ 255.255.255.0 0/ 135 VC-Mux CBR 512  
WAN 4 Disable  
WAN 5 Disable  
WAN 6 Disable  
WAN 7 Disable  
WAN 8 Disable  
To save the new WAN port configuration, enter:  
admin# write  
3.12.5 ISP profile for PPP  
Note: This sub-section is for routing mode operation only.  
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If your local ISP uses protocols of “PPPoA” or “PPPoE” over the ATM VC, you  
may need to setup the username and password information provided from  
your local ISP. The maximum length of username and password for ISP  
setting is limited to 51. The following command configures the ISP profile for  
WAN 3 with username “[email protected]”, password “Fuyg47ds”, and idle  
timeout of 10 minutes:  
admin# setup wan 3 isp [email protected] Fuyg47ds 10  
To review the new configuration you have configured, type:  
admin# setup wan 3 list  
Int.  
ISP account username  
Idle time  
---- --------------------------------- ---------  
WAN 1  
WAN 2  
WAN 3  
WAN 4  
WAN 5  
WAN 6  
WAN 7  
WAN 8  
10  
Note: The ISP account information would not be shown if the corresponding WAN port is disabled. The account  
information is provided from your local ISP. Please ask your local ISP if you do not know the username and password.  
The “PPPoA” and “PPPoE” protocols are designed based on the concept of  
“dial-on-demand”. Each time a request is made from a host on the LAN, GRT  
series checks the link status of the WAN ports and transfers the packets if the  
link status is active. When the link status is not active, it performs login  
procedure with the account information of ISP profiles and then transfers the  
packets if login successfully. Once the link has been established successfully,  
GRT series continuously monitors the traffic over WAN links. The “PPPoA” or  
“PPPoE” section will be cut off if there are no packets over the links during the  
period of idle timeout. The valid value for idle timeout is from 0 to 300 minutes.  
The idle timeout of “0” means that the session connects always even there is  
no traffic over the WAN link. To save the new WAN port configuration, enter:  
admin# write  
Note: Currently, the section timeout is set to be 10 minutes. Also, WAN 1 has the highest priority to dial if multiple WAN  
ports are enabled with PPPoA/PPPoE protocols while WAN 8 has the lowest one. In most applications,  
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PPPoA/PPPoE protocols must work with NAT/PAT. Please refer to section 3.11.3 NAT/PAT for details.  
3.13 System Status and Performance  
Use the “status” command to display GRT series activities. To see a list of  
applications and interfaces that provide status, enter:  
admin# status ?  
shdsl <CR>  
wan <CR>  
route <CR>  
Show SHDSL status  
Show WAN interface status  
Show routing table  
To display specific information, for example, for the SHDSL interface status  
and performance, enter:  
admin# status shdsl  
<SHDSL Status>  
SHDSL mode  
Bitrate  
:SHDSL CPE Side  
:512kbps  
:13.5dBm  
:10.8dB  
Tx Power  
Current SNR Margin  
Attenuation  
:35.8dB  
CRC Error Count  
:0  
SHDSL Remote Side Status  
Current SNR margin  
Attenuation  
:10dB  
:35dB  
:0  
CRC Error Count  
These statistics are:  
• CRC error count — The cyclic redundancy check error count.  
• Attenuation —The difference in decibels (dB) between the power level  
received at the near end versus the power level transmitted from the far end.  
• Signal-to-Noise (SNR) Margin — The SNR margin represents the amount of  
increased received signal (in decibels) relative to the noise power level that the  
unit is designed to tolerate without disconnecting from the network.  
To display status of WAN ports, enter:  
admin# status wan  
WAN  
IP address  
/
NetMask  
VPI/ VCI Enc  
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Protocol Active  
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----- --------------- --------------- --- ----- ------ -------- ------  
WAN1 192.168. 1. 1/255.255.255.  
0
0/  
32 LLC  
IPoA  
Yes  
To list active route status currently, type:  
admin# status route  
Flag Destination /  
Netmask  
/
Gateway  
Interface  
Portname  
---- ------------------------------------------ ------------ ---------  
S
C
C
C
0.0.0.0/  
0.0.0.0/ 200.0.8.254  
200.0.8.1  
200.0.8.1  
WAN1  
WAN1  
LAN  
200.0.8.0/ 255.255.255.0/ directly  
192.168.0.0/ 255.255.255.0/ directly  
127.0.0.1/255.255.255.255/ directly  
192.168.0.218  
127.0.0.1 Loopback  
3.14 User Profile  
GRT series comes pre-configured with user profile 1 already established, that  
is, user “admin” with password of “admin” and menu driven user interface. The  
maximum number of user profiles is limited to 5. You can add, delete, modify,  
or list the user profiles with the commands in the following examples.  
To change anyone of the user name and password, you must provide both  
items together. For example, to change the password only to “76gu94t” for  
user profile 1 (default user name “admin”), enter:  
admin# admin user modify 1 profile admin 76gu94t  
For user profile 1 with password “76gu94t”, to change the username to “titan”  
type:  
admin# admin user modify 1 profile titan 76gu94t  
Certainly, you can change both user name and password in one command line.  
The maximum length of user name and password is limited to 19.  
To set the user interface for an existing user profile, e.g., user profile 1, use  
“modify” and “attrib” commands:  
admin# admin user modify 1 attrib command  
The following commands add a new user profile 2 “test” with password  
“83fdi7s”, and set the user interface to menu mode:  
admin# admin user modify 2 attrib menu  
admin# admin user modify 2 profile test 83fdi7s  
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Note: You must perform the above procedure in the sequence as shown.  
To show all user profiles with attributes, type:  
admin# admin user list  
Legal access user profile  
No  
User Name  
UI Mode  
---- ------------------ -----------  
1
2
3
4
5
titan  
test  
Command  
Menu  
(Empty)  
(Empty)  
(Empty)  
To delete user profile 2, enter:  
admin# admin user clear 2  
To save your changes, enter:  
admin# write  
3.15 Management Security  
Since you can manage GRT series using Telnet and web browser over the  
network either from LAN interface or from WAN interface, the management  
security is important that it prevents invalid access to GRT series from Internet.  
There are extra two levels of protection for GRT series Telnet and web servers  
except login password control:  
3.15.1 Telnet port number  
You can specify the TCP port number of the Telnet server other than the  
default TCP port number 23 so that Telnet access to default port number  
cannot reach GRT series. The example below shows you how to setup the  
Telnet TCP port number from default 23 to 47:  
admin# admin security port 47  
The valid range of the Telnet port number is between 1 and 65534. To show  
which TCP port number is set to allow access to GRT series, type  
admin# admin security list  
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Configuration generic parameter  
Telnet listening TCP port  
: 47  
To save your changes, enter:  
admin# write  
3.15.2 Legal client IP  
You could assign the legal client IP addresses such that only Telnet clients and  
web browsers at the legal client IP addresses can access GRT series. The  
following example specifies a legal IP address 192.168.0.6 in the pool.  
admin# admin security ip_pool modify 1 192.168.0.6  
The maximum number in the legal IP pool is limited to 10. To show how many  
legal client IP addresses are configured to allow access to GRT series, enter:  
admin# admin security list  
Legal client IP address  
No Legal IP Address  
---- ------------------  
1
2
192.168.0.6  
(Empty)  
(Empty)  
(Empty)  
(Empty)  
(Empty)  
(Empty)  
(Empty)  
(Empty)  
(Empty)  
3
4
5
6
7
8
9
10  
An empty table means there is not any constraint on the Telnet client and web  
browser IP addresses. The example below deletes the first IP entry from the  
legal IP address pool.  
admin# admin security ip_pool clear 1  
To save your changes, enter:  
admin# write  
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Note: GRT series comes pre-configured without any constraint on the legal access IP addresses of Telnet clients and  
web browsers for convenience. However, it is very important to setup management security to prevent invalid access  
to GRT series from Internet.  
3.16 SNMP Support  
In addition to managing GRT series by means of the command-line  
applications and web browsers, you can manage the unit by using a simple  
network management protocol (SNMP) management station. GRT series can  
generate SNMP traps to indicate alarm conditions, and it relies on SNMP  
community strings to implement SNMP security. Currently, SNMP (RFC 1157)  
and SNMPv2c (RFC 1901) agents are implemented. Also, the management  
information bases (MIBs) supported by GRT series include MIB II right now.  
3.16.1 SNMP community  
The below example adds GRT series into a SNMP community “private”, with  
read/write access right for SNMP managers in the same community.  
admin# admin snmp community 1 edit enable private read_write  
To show the setting of SNMP communities with access right, type:  
admin# admin snmp community 1 list  
SNMP Community Pool  
No  
Community  
Access Right  
Read_Write  
---- -------------------------------- ------------------  
1
2
3
4
5
private  
(Empty)  
(Empty)  
(Empty)  
(Empty)  
To disable the SNMP community 1, enter the following command:  
admin# admin snmp community 1 edit disable private read_write  
To save your changes, enter:  
admin# write  
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3.16.2 SNMP trap  
GRT series can generate alarm conditions to SNMP manager via SNMP traps.  
The following example configures trap 1 with SNMPv2c encapsulation. The  
SNMP manager is located at 192.168.0.254 with community “private”.  
admin# admin snmp trap 1 edit 2 192.168.0.254 private  
To show the setting of SNMP communities with access right, type:  
admin# admin snmp trap 1 list  
SNMP Trap Host Pool  
No  
Trap  
IP Address  
Version  
2
---- -------------------------------- ------------------ -------  
1
2
3
4
5
private  
192.168.0.254  
(Empty)  
(Empty)  
(Empty)  
(Empty)  
To disable the SNMP trap 1, enter the following command:  
admin# admin snmp trap 1 edit disable 192.168.0.254 private  
To save your changes, enter:  
admin# write  
3.17 Backup and Restore Configuration  
Remember to backup a copy of your configuration file after you have  
completed configuration of GRT series so you can easily recover it when  
necessary.  
3.17.1 Backup configuration  
Use “show script” command to dump the system current configuration in script  
commands. The following is an example.  
admin# show script  
Showing System Configuration...  
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setup mode Route  
setup shdsl mode STU-R  
setup shdsl n*64 0  
setup shdsl type Annex_A  
setup shdsl margin 0  
setup wan 1 protocol IPoA  
setup wan 1 address 192.168.1.1 255.255.255.0  
setup wan 1 vpi_vci 0 32  
setup wan 1 encap LLC  
setup wan 1 qos class UBR  
setup wan 1 qos pcr 2400  
setup wan 1 isp test test 10  
...  
admin snmp trap 3 edit Disable 192.168.0.254 private  
admin snmp trap 4 edit Disable 192.168.0.254 private  
admin snmp trap 5 edit Disable 192.168.0.254 private  
admin#  
After dumping the configuration, use the copy and paste function provided by  
your terminal access program or Telnet program to save it to a text file. Don’t  
miss any script command line, or you would loss part of the configuration.  
Note: With “show script” command, the password is printed with “*” instead of the real password characters for security.  
Therefore, the backup configuration does not contain the password information. Remember to recover correct  
password information manually after the backup procedure by a text editor. There is no command that could show the  
password information. You should save your password in a safe place for any eventuality.  
3.17.2 Restore configuration  
Before you restore the old configuration back to GRT series, make sure to  
clear the whole setting back to the factory defaults first with the following  
command:  
admin# setup default  
Are you sure? (y/n): y  
Set OK!  
admin#  
To restore the configuration, copy the content of the whole configuration file,  
which was saved according to section 3.17.1 Backup configuration, and paste  
them into the console CLI via your Telnet program or terminal access program.  
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Watch the system messages to ensure every command was accepted by the  
system successfully.  
Note: The Telnet program is recommended during backup process. If only the serial port could be used, carefully add  
some delay by adjust the line and/or character delay for your terminal access program so that all command could be  
accepted by the system without error. Also, the configuration file backup with “show script” command has the  
password printed with “*” instead of the real password characters for security. Therefore, remember to recover correct  
password information manually before the restore procedure.  
To save your restored configuration and let it take effect, enter:  
admin# write  
and reboot the system.  
3.18 Software Upgrade  
You check the software version of GRT series by the command:  
admin# show system  
General system information  
Model  
:08A2  
Software Version :101029E4  
CPU  
RAM  
:MPC850SR(rev.B)  
:4MB  
Flash  
:2MB  
:AD20msp930  
Chipset  
Firmware Version :3130BE6B  
Hostname  
:SOHO  
System Time  
:152DAY/18HR/12MIN  
If GRT series is out of date, get the latest version from your service provider by  
the trivial file transfer protocol (TFTP). The TFTP allows you to transfer new  
software images to upgrade GRT series. Refer to section 3.17.1 Backup  
configuration to backup a copy of your configuration file before upgrading it so  
you can easily recover the configuration when necessary.  
The following example shows you how to get a kernel software image from a  
TFTP server 192.168.0.200, where the image file name is “kernel.bin”:  
admin# upgrade kernel 192.168.0.200 kernel.bin  
TFTP server IP address: 192.168.0.200  
Upgrade filename: kernel.bin  
Connecting...  
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Byte Transferred :  
Complete  
624641 bytes  
Transfer Complete, Replace Now? (y/n): y  
Writing flash....................... OK!  
Do you want to reboot? (y/n): y  
Be sure to write the new image to NVRAM and immediately reboot the device  
to activate it. When you log back onto GRT series after the reboot, then you  
can use the “show system” command to verify the version of the new firmware  
that is active, and restore your configuration.  
Note: All configurations will be cleared during the upgrading procedure. Make sure that you have a backup  
configuration file before you start the upgrading procedure. See section 3.17.1 Backup configuration for details.  
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