Allied Telesis Switch AR44xS User Manual

Software Maintenance Release Note  
Version 281-02  
for AR750S, AR750S-DP, AR770S, AR415S, AR450S and AR44xS series routers, and AT-8600 series switches  
This software maintenance release note lists the issues addressed and enhancements made in Maintenance Version 281-02 for Software Version 2.8.1. Version  
details are listed in the following table:  
Models  
Series  
Release File  
Date  
Size (bytes)  
GUI file  
AR415S, AR440S, AR441S, AR442S, AR450S  
AR400  
54281-02.rez  
5 September 06  
4673896  
415s_281-02_en_d.rsc  
440s_281-02_en_d.rsc  
441s_281-02_en_d.rsc  
442s_281-02_en_d.rsc  
450s_281-02_en_d.rsc  
AR750S, AR750S-DP, AR770S  
55281-02.rez  
sr281-02.rez  
5 September 06  
5 September 06  
3936164  
2251144  
750s_281-02_en_d.rsc (AR750S and AR750S-DP)  
sr24_281-02_en_d.rsc  
AT-8624T/2M, AT-8624PoE, AT-8648T/2SP  
AT-8600  
Caution: Using a maintenance version on the wrong model may cause unpredictable results, including disruption to the network.  
This maintenance release note should be read in conjunction with the following documents:  
the Release Note for Software Version 2.8.1, available from www.alliedtelesyn.co.nz/documentation/relnotes/relnotes.html  
your router or switch’s Document Set for Software Release 2.8.1. This document set is available on the CD-ROM that shipped with your router or switch, or  
Caution: Information in this release note is subject to change without notice and does not represent a commitment on the part of Allied Telesis Inc. While every  
effort has been made to ensure that the information contained within this document and the features and changes described are accurate, Allied Telesis Inc. can  
not accept any type of liability for errors in, or omissions arising from the use of this information.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Features in 281-02  
3
Features in 281-02  
Software Maintenance Version 281-02 includes the resolved issues and enhancements in the following tables. In the tables, for each product series:  
“Y” in a white column indicates that the resolution is available in Version 281-02 for that product series.  
“-” in a white column indicates that the issue did not apply to that product series.  
a grey-shaded column indicates that Version 281-02 was not released on that product series.  
Level 1  
CR  
Module  
PIM 6  
Level  
1
Description  
For PIM on IPv6, if the interface that was being used as the BSR candidate address  
went down, the network occasionally did not re-elect a BSR and the RPs in a  
timely manner. This could cause the router or switch to reboot.  
Y
-
-
-
-
-
Y
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CR00006040  
This issue has been resolved.  
Switch  
VLAN  
OSPF  
1
1
1
If a user created a configuration file that contained port trunk settings before  
VLAN port settings, then a loop occurred when the switch rebooted with this  
configuration.  
Y
Y
Y
CR00007273  
CR00013457  
CR00013492  
This issue has been resolved.  
When ports were added to a currently-disabled RSTP domain, the ports could  
start to discard packets (because their STP state was set to Discarding).  
-
-
This issue has been resolved. When ports are added to a disabled RSTP domain,  
they remain in a Forwarding state.  
When route filters (made with the command add ip route filter) were used to  
filter OSPF routes, it was possible for OSPF to constantly remove and re-create an  
AS-External LSA. This could prevent OSPF sessions from establishing.  
Y
Y
This issue has been resolved.  
Version 281-02  
C613-10482-00 REV B  
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Features in 281-02  
4
CR  
Module  
Core  
Level  
1
Description  
When a BRI or PRI PIC was installed on the router, an issue with internal memory  
handling occasionally caused the router to reboot.  
Y
-
-
-
Y
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CR00013736  
This issue has been resolved.  
Switch  
1
If a user created a configuration file that contained LACP settings and VLAN port  
settings, then a loop occurred when the switch rebooted with this configuration.  
Y
CR00013743  
This issue has been resolved.  
Level 2  
CR  
Module  
PIM 6  
Level  
2
Description  
For PIM on IPv6, RPSet information did not expire correctly when all RP  
candidates had expired.  
Y
Y
-
-
Y
Y
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CR00010452  
This issue has been resolved.  
IPv6  
2
2
The router or switch sometimes forwarded packets to directly connected hosts  
whose corresponding IPv6 ND cache entry was still in INCOMPLETE state. This  
caused it to send the packets to incorrect MAC addresses and egress ports.  
CR00010593  
CR00012407  
This issue has been resolved.  
STAR  
When the STAR protocol was used for link-layer encryption, the channel setup  
failed continuously on heavy traffic.  
Y
-
Y
-
-
-
-
-
-
-
This issue has been resolved.  
Version 281-02  
C613-10482-00 REV B  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Features in 281-02  
5
CR  
Module  
IGMP  
Level  
2
Description  
If IGMP snooping was enabled but IGMP was not enabled, the snooper behaved  
as if IGMP snooping fast leave had been enabled even when it had not been. This  
meant that as soon as the snooper received a Leave message, the port left the  
group.  
Y
-
-
Y
-
-
-
-
Y
Y
-
-
-
-
-
-
-
-
CR00012476  
This issue has been resolved. Note that fast leave is disabled by default.  
STP  
2
When STP was operating with a large number of VLANs in the same STP region,  
the switch sometimes rebooted while processing topology change notifications  
(TCNs).  
-
-
CR00012657  
This issue has been resolved.  
Core, File,  
Stack  
2
2
The command create config=filename set did not copy the configuration file  
to all switches in the stack, but only saved the file onto the current switch.  
-
-
-
-
-
-
-
-
-
-
Y
Y
-
-
-
-
-
-
-
-
CR00012741  
CR00013081  
This issue has been resolved.  
Switch, STP  
When STP was enabled on ports in a trunk group, the non-master ports did not  
have the same state as the master port in the switchs hardware STG table. This  
could, on rare occasions, create a broadcast storm.  
This issue has been resolved. All ports in a trunk group follow the master port in  
the hardware STG table.  
ATM  
2
When connected to some types of DSLAMs, the router could reboot due to a  
reception error on the SHDSL EOC channel.  
Y
-
-
-
-
-
-
-
-
-
CR00013128  
This issue has been resolved.  
Version 281-02  
C613-10482-00 REV B  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Features in 281-02  
6
CR  
Module  
OSPF  
Level  
2
Description  
It was possible in unusual circumstances for the OSPF link state retransmission list  
to grow to a large number. This caused the router or switch to reboot.  
Y
Y
-
-
Y
Y
-
-
-
-
Y
-
-
-
-
-
-
-
-
-
CR00013359  
This issue has been resolved.  
WAN Load  
Balancer  
2
It was possible in unusual circumstances for the router to run out of memory after  
a WAN load balancer session was added. This could cause the router to reboot  
or to stop processing packets.  
CR00013390  
This issue has been resolved.  
Level 3  
CR  
Module  
Core  
Level  
3
Description  
When a user entered the command show file=switch.ini, the switch previously  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CR00003657  
could have displayed invalid content or an error message.  
This issue has been resolved.  
Firewall  
3
When the HTTP proxy URL filter had entries that allowed certain domains and  
also had entries that denied certain keywords, the supposedly-allowed domains  
were denied if they contained the denied keywords. The proxy allowed the page  
/index.html from such domains, but no other pages.  
Y
Y
CR00010345  
This issue has been resolved. The proxy no longer checks allowed domains  
against the keyword list.  
Version 281-02  
C613-10482-00 REV B  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Features in 281-02  
7
CR  
Module  
Core  
Level  
3
Description  
When the router or switch sent a RADIUS accounting STOP packet, the packets  
Acct-Session-Time was always zero, no matter how long the session had been  
active for.  
Y
Y
-
-
Y
Y
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CR00011710  
This issue has been resolved.  
IPv6  
3
Previously, if IPv6 had a dynamic Neighbour Discovery cache entry for a particular  
IPv6 address, it prevented users from adding a static entry for the same IPv6  
address.  
CR00013060  
This issue has been resolved. Users can now overwrite dynamic Neighbour  
Discovery cache entries with static entries.  
IPv6, PIM,  
PIMv6  
3
3
A router or switch running PIM6 occasionally rebooted in certain network  
topologies when links were very busy. The circumstances that caused this crash  
are very unusual, but the code has been made more robust to cope with them.  
Y
Y
-
-
Y
Y
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CR00013117  
CR00013162  
ISAKMP  
When heartbeats fail for an ISAKMP SA, the router or switch (correctly) removes  
the ISAKMP SA and any IPsec SAs that were created by the ISAKMP SA. It then  
sends delete messages to notify the peer, so that the peer can also remove the  
relevant IPsec SAs.  
However, if heartbeats failed just after a re-negotiation, and only failed for the  
new ISAKMP SA, then the router or switch did not send delete messages for any  
IPsec SAs that were also removed. This could mean that encrypted traffic sent  
from the peer was lost.  
This issue has been resolved. If heartbeats fail, the router or switch now correctly  
sends the peer device a delete message for any removed IPsec SAs.  
ISAKMP  
3
Previously, if an ISAKMP policy was configured with set isakmp policy=name  
prenegotiate=true and the peer was unresponsive, then at start-up the router  
or switch sent fewer ISAKMP message retransmissions than the configured  
msgretrylimit value.  
Y
-
Y
-
-
-
-
-
-
-
CR00013220  
This issue has been resolved.  
Version 281-02  
C613-10482-00 REV B  
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Features in 281-02  
8
CR  
Module  
Firewall  
Level  
3
Description  
When an RTSP media stream, using TCP as the transport protocol, was passing  
through the firewall, then the session could stall if some packets were  
retransmitted with different sequence numbers to the original transmission.  
Y
Y
-
-
Y
Y
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CR00013415  
This issue has been resolved.  
DVMRP  
Stack  
3
3
3
Values for some DVMRP settings (including ttlthreshold and metric) were not  
saved in the configuration file or output resulting from the commands create  
config and show config dynamic. If the router or switch rebooted, the values  
were not applied.  
CR00013473  
CR00013516  
This issue has been resolved.  
Different versions of the management stacking feature are not compatible with  
each other, which means that AT-9924Ts or x900-24XT series switches can only  
be stacked with other AT-9924Ts or x900-24XT switches.  
-
-
-
-
-
-
-
-
-
-
Y
Y
-
-
-
-
-
-
-
-
CR00013525  
CR00013547  
This software version includes checks to prevent incompatible software from  
being stacked.  
VLAN  
When DHCP snooping was enabled on the router or switch, performing a walk  
of the MIB variables in that router or switch could result in incorrect termination  
of the walk. This was because certain SNMP packets were incorrectly interpreted  
as DHCP packets.  
This issue has been resolved.  
ATM  
ATM  
3
3
At low SHDSL bitrates, the EOC channel exhibited many spurious CRC errors.  
This issue has been resolved.  
Y
Y
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CR00013588  
CR00013672  
An SNMP Walk of the ATM MIB would fail to complete properly, as it would not  
advance through the channel list.  
This issue has been resolved.  
Version 281-02  
C613-10482-00 REV B  
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Features in 281-02  
9
CR  
Module  
SSH  
Level  
3
Description  
The router or switchs SSH server occasionally disconnected an SSH client because  
of a checksum error. This occurred because the server did not decrypt the SSH  
session key correctly.  
Y
-
-
-
Y
Y
-
-
-
-
Y
-
-
-
-
-
-
-
-
-
CR00013714  
This issue has been resolved.  
Core  
3
For AR750S-DP routers, the values of the fanAndPsPSUPresent MIB fields  
displayed incorrectly. They indicated that a PSU was present when one was not  
installed, and that it was not present when it was.  
CR00013757  
This issue has been resolved.  
Level 4  
CR  
Module  
Level  
4
Description  
Eth, Bridge,  
Switch, LLDP,  
IP Gateway  
For all Ethernet-like interfaces, the router or switch now uses an ifType value of  
ethernetCsmacd, instead of the deprecated value of iso88023Csmacd.  
Y
-
-
-
Y
Y
-
-
-
-
Y
-
-
-
-
-
-
-
-
-
CR00001359  
Asyn, Core,  
Log, Scripting,  
Show  
4
The console ports autobaud mode was determined incorrectly during start-up.  
This caused the router to unnecessarily reconfigure the console port for 9600  
8N1 before printing any bootup messages.  
CR00013174  
This issue has been resolved.  
Version 281-02  
C613-10482-00 REV B  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Features in 281-02  
10  
CR  
Module  
OSPF  
Level  
4
Description  
After OSPF deleted an AS-External LSA, it sometimes sent an unnecessary LSA  
with no changes.  
Y
Y
-
-
Y
Y
-
-
-
-
Y
Y
-
-
-
-
-
-
-
-
CR00013569  
This issue has been resolved.  
File  
4
4
Japanese users can now delete the router or switchs preferred software release  
and the current boot configuration file. For routers or switches that are  
manufactured for non-Japanese markets, users must first stop the files from  
being preferred, by setting new preferred files or by using the commands delete  
install=pref or set config=none.  
CR00013683  
CR00013767  
Core  
In Japan, AT-8624PoE switches are named 8624PS. Previously, 8624PS switches  
displayed AT-8624PoE as their board name in the output of the command show  
system.  
-
-
-
-
-
Y
-
-
-
-
This issue has been resolved. For Japanese switches only, the board name is now  
8624PS.  
Version 281-02  
C613-10482-00 REV B  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Features in 281-02  
11  
Enhancements  
CR  
Module  
Level  
-
Description  
ATM  
Previously, it was not possible to set the MTU for an ATM interface.  
Y
Y
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CR00013126  
This enhancement makes it possible to now do so. The MTU can be set to values  
between 256 bytes and 1600 bytes, inclusive.  
NAT-T, IPsec  
-
This software version supports more versions of IPsec NAT-T. As well as the  
existing support for versions 2 and 8 of the NAT-T draft, the router now:  
Y
CR00013130  
supports NAT-T draft version 3, as defined by draft-ietf-ipsec-nat-t-ike-03.txt.  
This version has also been implemented by SonicWALL in its EnhancedOS.  
supports RFC 3947. This RFC has also been implemented in Linuxs Openswan,  
for example (www.openswan.org).  
accepts and sends the IPsec draft version 2 Vendor ID string when the hash  
does not include a carrage return. Therefore it accepts and sends a hash of  
“draft-ietf-ipsec-nat-t-ike-02” as well as a hash of “draft-ietf-ipsec-nat-t-  
ike-02\n”  
displays some other Vendor IDs in debugging information even though the  
router does not support these versions. Such Vendor IDs are followed by the  
phrase “info only”.  
IP Gateway  
-
RIPv2 can now use authentication passwords that contain almost any printable  
character, including characters such as $, % and &. The ? character is interpreted  
as asking for parameter help, so this is not usable anywhere inside a password.  
Also, a password cannot contain double quotes (") as the first character of the  
string.  
Y
-
Y
-
-
Y
-
-
-
-
CR00013444  
The RIP password length is now strictly enforced at 16 characters. The command  
handler no longer accepts a password with more characters than this.  
Version 281-02  
C613-10482-00 REV B  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Features in 281-02  
12  
CR  
Module  
SHDSL  
Level  
-
Description  
The 4-wire support of SHDSL interfaces has been enhanced to provide support  
for a standards-based train-up mode as well as the existing enhanced train-up  
mode.  
Y
Y
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CR00013447  
This issue has been resolved.  
File  
PoE  
-
-
Previously, a user could rename the current boot configuration file (by using the  
command rename). This stopped the router or switch from running that  
configuration on boot-up, so if the router or switch restarted after the user had  
renamed the current boot configuration file, it started up with no configuration.  
Y
Y
CR00013535  
CR00013677  
This issue has been resolved. Users can no longer rename the current boot  
configuration file.  
This enhancement added support for the latest version of the PoE firmware  
(version 5.0.1), so that AT-8624PoE switches can be shipped from the factory  
with this firmware version.  
-
-
-
-
-
Y
-
-
-
-
Version 281-02  
C613-10482-00 REV B  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Features in 281-01  
13  
Features in 281-01  
Software Maintenance Version 281-01 includes the resolved issues and enhancements in the following tables. In the tables, for each product series:  
“Y” indicates that the resolution is available in Version 281-01 for that product series.  
“-” indicates that the issue did not apply to that product series.  
Level 1  
CR  
Module  
Switch  
Level  
1
Description  
If an AT-9924SP had a large number of SFPs installed and had a very high level of  
traffic passing through the network, sometimes newly inserted SFPs were not  
detected.  
-
-
-
-
-
-
-
-
Y
Y
-
CR00012654  
This issue has been resolved.  
DHCP  
1
In some configurations in which the DHCP server was enabled, the router or  
switch compacted its flash memory frequently. This occurred because the DHCP  
server unnecessarily updated record files in flash memory even if the record had  
not changed.  
Y
Y
Y
Y
Y
Y
Y
Y
Y
CR00012715  
CR00012760  
This issue has been resolved, so that DHCP records are only updated when  
necessary. Note that if the router or switch has NVS memory, it stores DHCP  
records in NVS by preference, instead of in flash memory.  
Log  
1
Entering the command show debug caused the router or switch to reboot if one  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
or more long messages existed in the log.  
This issue has been resolved.  
Version 281-02  
C613-10482-00 REV B  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Features in 281-01  
14  
CR  
Module  
Switch  
Level  
1
Description  
When STP is enabled on the switch but is disabled for a trunk (by using the  
command disable stp port), the trunk should pass traffic. Previously, some trunk  
members sometimes stayed in the “discarding” state instead.  
-
-
-
-
-
-
-
Y
Y
-
CR00012933  
This issue has been resolved.  
DVMRP  
1
1
Receiving a DVMRP Graft or Prune message occasionally caused the router or  
switch to reboot.  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
-
-
Y
Y
Y
Y
Y
Y
CR00013025  
CR00013413  
This issue has been resolved.  
IP Gateway,  
Load Balancer  
If the router or switch was configured with a local interface IP address and the  
interface to which this address belonged did not have a logical interface with  
index 0, a number of connectivity issues from this router or switch occurred, in  
which the router or switch was not able to communicate with UDP, TCP or PING.  
Y
Y
This issue has been resolved.  
SSL  
1
When the router or switch used SSL to process HTTPS traffic, it rebooted.  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
CR00013666  
This issue occurred, for example, when browsing securely to the GUI, or when  
the load balancer was configured to support HTTPS traffic.  
This issue has been resolved.  
Version 281-02  
C613-10482-00 REV B  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Features in 281-01  
15  
Level 2  
CR  
Module  
Bridge  
Level  
2
Description  
The Bridge cannot be configured to bridge PPPoE packets from an Ethernet  
interface that has also been configured as a PPPoE interface. Previously, such a  
Bridge configuration would appear to succeed. However the Bridge would not  
bridge PPPoE packets and the router would restart when the command reset  
bridge was entered.  
Y
Y
Y
-
-
-
-
-
-
-
CR00009212  
This issue has been resolved. Note: if you want to bridge PPPoE packets, do not  
also configure the router as a PPPoE endpoint (by using the command create  
ppp=number over=ethx-any).  
MSTP  
2
2
2
Because of an MSTP issue, the switch did not always send a BPDU with an  
agreement flag to its designated bridge, even if the switch was synchronised with  
the latest spanning tree information from the designated bridge. This prevented  
the designated port on the designated bridge from making a fast transition to  
the forwarding state. The result was that the network could take up to two times  
the “forward delay” time to fully converge.  
-
-
-
Y
Y
Y
Y
Y
Y
Y
Y
-
Y
Y
-
Y
Y
Y
Y
Y
Y
-
CR00009213  
CR00009826  
CR00010513  
This issue has been resolved.  
IP Gateway  
When a static ARP is deleted, the router or switch sends out an ARP request to  
attempt to create a dynamic ARP for that IP address. Previously, the router or  
switch did not process the ARP response correctly and therefore did not add the  
ARP to its ARP table.  
Y
Y
Y
Y
This issue has been resolved. When a static ARP is deleted, the router or switch  
attempts to create a dynamic ARP for that IP address, and will successfully add it  
to the ARP table if a device responds.  
BGP,  
BGP did not update its route table when a blackhole route changed in IP.  
This issue has been resolved.  
Y
Y
Y
Y
IP Gateway  
Version 281-02  
C613-10482-00 REV B  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Features in 281-01  
16  
CR  
Module  
File  
Level  
2
Description  
The router or switch sometimes rebooted when copying a very large file (several  
Mbytes). This issue has been resolved by improving the copy process so that it  
uses fewer memory buffers.  
Y
-
Y
-
Y
-
Y
-
Y
-
Y
-
Y
-
Y
Y
Y
-
Y
CR00011434  
Switch  
IPv6  
2
2
On x900-48 Series switches, when the switch used a DSCP map to remark  
packets, it did not mark the packets correctly.  
-
CR00011670  
CR00012364  
This issue has been resolved.  
For IPv6, if there were multiple equal cost multipath (ECMP) static routes to a  
destination, and one or more links for the routes became inactive, the inactive  
route was sometimes still chosen for forwarding. This caused brief data delivery  
failure to the destination.  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
-
-
Y
Y
Y
Y
Y
This issue has been resolved.  
IP Gateway  
2
If the router or switch received an IP packet that had been sent as an Ethernet  
broadcast, the router or switch responded as if the packet had been sent to its IP  
address, even when the packet was destined for a different IP address. In  
particular, the router or switch processed and responded to ICMP and TCP  
packets that were sent as Ethernet broadcasts to different IP addresses. These  
caused the router or switch to send ICMP echo responses or TCP reset packets.  
Y
Y
Y
CR00012534  
This issue has been resolved. Such Ethernet broadcast packets are generally not  
valid packets, so the router or switch now discards them.  
Version 281-02  
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Features in 281-01  
17  
CR  
Module  
Firewall  
Level  
2
Description  
When the WAN load balancer was used with IP NAT (instead of firewall NAT), and  
an FTP session was established to a server on the public network, the router did  
not correctly establish a return session. This meant data was unable to flow  
correctly back from the server, and the router rebooted.  
Y
-
Y
-
-
-
-
-
-
-
CR00012613  
This issue has been resolved.  
Note that the WAN load balancer is not designed for use with IP NAT, because IP  
NATs are not associated with interfaces. Configurations that use an IP NAT cannot  
vary the global IP address (the gblip parameter) based on the outgoing interface,  
so the WAN load balancer sends all traffic out with the same source address.  
Therefore, the return traffic probably comes back via the WAN load balancer  
resource that is associated with the global IP. The impact is that the WAN load  
balancer balances the outgoing traffic but not the return traffic.  
We recommend using firewall NAT instead of IP NAT with the WAN load balancer.  
VRRP,  
IP Gateway  
2
Under certain network conditions in which VRRP entities become temporarily  
unsynchronised, the router or switch could receive a gratuitous ARP from a self-  
elected VRRP master when the router or switch was still the master. This caused  
the existing master to create an ARP entry that incorrectly redirected packets  
towards the other VRRP entity even after the other entity had become a slave  
again.  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
CR00012624  
This issue has been resolved. The router or switch no longer accepts gratuitous  
ARPs from other VRRP entities while it is still the Master.  
Switch  
2
After the AR770S rebooted, the Port Link/Activity and Duplex/Collision LEDs  
sometimes did not blink in response to activity and collisions, respectively.  
-
-
Y
-
-
-
-
-
-
-
CR00012683  
This issue has been resolved. The router detects the problem and recovers from  
it, if possible. If it cannot recover from the problem, it generates a log message  
of severity 6, module SWK, type REST, and subtype FAIL. The log message says  
“An LED error has been detected, please power-cycle the device. If this message  
appears again, contact your technical support representative for help.”  
Version 281-02  
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Features in 281-01  
18  
CR  
Module  
Level  
2
Description  
IPsec, ENCO  
Decrypting a large IPsec ESP packet sometimes caused the router or switch to  
reboot.  
Y
-
Y
-
Y
Y
Y
-
Y
-
-
-
-
-
-
-
-
-
-
-
CR00012697  
This issue has been resolved.  
Core  
2
Soft errors can generate exceptions that would cause the router or switch to  
reboot. Soft errors are spontaneous changes in the information stored in a digital  
circuit, caused by physical effects. The router or switchs handling of such errors  
has been improved, so that it recovers without rebooting when possible.  
CR00012710  
Core, File,  
Stack  
2
2
The command create config=filename set did not copy the configuration file  
to all switches in the stack, but only saved the file onto the current switch.  
-
-
-
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
-
CR00012741  
CR00012757  
This issue has been resolved.  
OSPF  
The router or switch correctly accepted the command add ospf redistribution  
protocol=static followed by the command set ospf asexternal=on or nssa.  
However, the command create config did not create a valid configuration file  
from these commands. If the router or switch used that configuration after a  
reboot, it gave the error “Redistribution for specified routing protocol - already  
exists” and did not use the user-defined redistribution definition.  
Y
Y
Y
Y
This issue has been resolved. The router or switch now correctly saves and uses  
the user-defined redistribution definition.  
DHCP  
Snooping,  
2
2
When the switch had two DHCP snooping classifiers applied across all 48 ports,  
and maxleases was set to 10 or more on each port, the switch rebooted.  
-
-
-
-
-
-
-
-
-
-
Y
Y
-
-
CR00012820  
CR00012821  
Switch  
This issue has been resolved.  
IP Gateway  
When adding, deleting or updating subnet routes of a more general route, the  
software and hardware IP route tables sometimes became unsynchronised. The  
same issue sometimes also occurred when updating ECMP routes. This could  
cause the router or switch to forward packets to unexpected next hops.  
Y
Y
Y
Y
Y
Y
This issue has been resolved.  
Version 281-02  
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Features in 281-01  
19  
CR  
Module  
Level  
2
Description  
ASYN, Log  
The following issues occurred with sending log messages to an asynchronous  
port:  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
CR00012846  
The log messages output on an asynchronous port were corrupt.  
When log messages were output to an asynchronous port, that port was  
(correctly) locked. However, the port remained locked after the asynchronous  
log output definition was destroyed, and after the log output's destination  
was changed from asynchronous to something else.  
It was possible for a user to change the log output destination to an  
asynchronous port while the user was logged into the asynchronous port. This  
resulted in the user losing access to the command line interface.  
It was possible to create a log output definition with an asynchronous port as  
the destination even when another user was logged into that asynchronous  
port. This resulted in the other user losing access to the command line  
interface.  
If a user changed the log output destination to an asynchronous port and  
specified invalid parameters in the command, an error message was displayed  
but the new output destination was saved anyway.  
The set command allowed a user to specify an asynchronous port as the  
destination without specifying the asynchronous port number. The number  
defaulted to asyn0, which may not have been the desired port.  
These issues have been resolved.  
Core  
2
If the switch was rebooted at a time when there was a high level of packet traffic  
between the switch ports and the switch CPU, then during the reboot process it  
was possible for RAM test errors to occur.  
-
-
-
-
-
-
-
Y
Y
-
CR00012855  
This issue has been resolved.  
Version 281-02  
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Features in 281-01  
20  
CR  
Module  
ENCO  
Level  
2
Description  
Entering the command create enco key=number ip=? caused the router or  
Y
-
Y
-
Y
-
Y
-
Y
-
Y
-
Y
-
Y
Y
Y
Y
Y
CR00012868  
switch to reboot.  
This issue has been resolved.  
IPv6, Switch  
2
When an IPv6 accelerator card was installed, IPv6 multicast traffic was flooded to  
all ports in a downstream VLAN, whether or not they had joined the multicast  
group.  
-
CR00012900  
This issue has been resolved.  
Switch, VLAN,  
User  
2
2
Under very rare circumstances, memory corruption could occur when packets  
were transmitted by the CPU out a switch port.  
Y
Y
-
Y
Y
-
-
-
-
-
-
-
-
-
CR00012911  
CR00012951  
This issue has been resolved.  
IPv6  
RIPng (for IPv6) sometimes sent sub-optimal routes to its neighbours. When  
RIPng was configured in a network with loop topology, this could cause unstable  
routing table entries on the neighbours (the metric kept being updated, as a  
result of updates from neighbours).  
Y
Y
Y
Y
Y
Y
This issue has been resolved. RIPng no longer sends sub-optimal routes.  
Bridge  
ATM  
2
2
If a tagged packet was bridged out of a VLAN interface, the interface always  
added a VLAN tag into the packet, even though the packet was already tagged.  
Y
Y
Y
-
Y
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CR00012952  
CR00012991  
This issue has been resolved.  
The maximum allowed value of the vpi parameter in the commands add and set  
atm channel has been increased from 8 to 15.  
Version 281-02  
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Features in 281-01  
21  
CR  
Module  
Level  
2
Description  
EPSR, Switch  
When EPSR is enabled, it creates a classifier so it can send EPSR packets to the  
CPU for processing. Previously, if too many classifiers existed and therefore EPSR  
could not create the classifier, EPSR was enabled anyway. However, it did not  
work correctly.  
-
-
-
-
-
-
-
-
-
Y
Y
Y
Y
-
CR00013003  
This issue has been resolved. Now, if EPSR cannot create the classifier, an error  
message displays and EPSR is not enabled.  
IPv6  
2
When an IPv6 address was deleted on the router or switch, and that IPv6 address  
had previously been learnt by a remote IPv6 node, then the router or switch  
would reboot if it received an ICMPv6 Neighbour Solicitation message from the  
remote node. This meant, for example, that if you successfully pinged an address  
on the router or switch, then deleted that address, then attempted to ping the  
old address again, the router or switch would reboot.  
Y
Y
Y
Y
Y
Y
CR00013077  
This issue has been resolved.  
IP Gateway  
UPnP  
2
2
2
If the router or switch attempted to email log output, and used a domain name  
server that gave a non-standard response to the DNS query, the router or switch  
sometimes rebooted.  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
-
Y
-
Y
-
Y
-
Y
-
Y
-
Y
-
CR00013234  
CR00013276  
CR00013309  
This issue has been resolved.  
In UPnP, Msearch requests were stored indefinitely, which eventually exhausted  
the routers memory and caused it to reboot.  
This issue has been resolved. Msearch requests are now deleted once the router  
has finished with them.  
L2TP  
When an L2TP LAC Client (for example, a Microsoft Windows XP VPN Client)  
activated an L2TP tunnel to a router or switch that was operating as an LNS, the  
dynamic PPP interface on the LNS left out the PPP authentication phase.  
Y
Y
-
-
Y
Y
Y
This also prevented the interface from obtaining an IP address by remote IP  
assignment from a User Database entry.  
This issue has been resolved.  
Version 281-02  
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Features in 281-01  
22  
CR  
Module  
EPSR  
Level  
2
Description  
The switch correctly accepted a changed ring flap time (the commands create or  
set epsr ringflaptime). However, if the command create config was used to  
save the configuration and the switch used that configuration after a reboot,  
EPSR failed.  
-
-
-
-
-
-
-
-
-
Y
Y
Y
Y
-
CR00013407  
This issue has been resolved.  
PIMv6  
2
When the router or switch used PIM for multicast routing, and an IPv6 multicast  
client joined a group, then left it, then attempted to rejoin it, sometimes the  
attempt to rejoin was not successful.  
Y
Y
Y
Y
Y
Y
CR00013529  
This issue has been resolved.  
Level 3  
CR  
Module  
TTY  
Level  
3
Description  
Editing a text file that consisted of a very large number of lines (approaching or  
exceeding 30,000 lines) caused the router or switch to reboot.  
Y
Y
-
Y
Y
-
-
-
-
Y
Y
Y
Y
-
CR00008766  
This issue has been resolved.  
Asyn  
3
If information was sent to a console (asyn) port that had no cable plugged into  
it, excessive CPU usage occurred.  
Y
Y
Y
Y
Y
Y
CR00011444  
This issue has been resolved.  
Version 281-02  
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Features in 281-01  
23  
CR  
Module  
Level  
3
Description  
WAN load  
balancer  
WAN load balancer performance has been improved, especially through  
improvements to the session hashing mechanism.  
Y
Y
-
Y
Y
-
-
-
-
-
-
-
CR00012309  
OSPF  
3
An OSPF router or switch could show large numbers of entries in its  
retransmission lists to certain neighbours under certain conditions (for example,  
in a congested Frame Relay network). In some cases, the number of items in the  
list was larger than the number of LSAs in the database.  
Y
Y
Y
Y
Y
Y
Y
Y
CR00012468  
This issue has been resolved.  
Also, a new NRL debugging option has been added to OSPF, to show additions  
to and deletions from the neighbour retransmission list. To enable NRL  
debugging, use the command:  
enable ospf debug=nrl  
Note that this option may generate large amounts of debugging output on a  
large OSPF network. Use it with care.  
To disable NRL debugging, use the command:  
disable ospf debug=nrl  
OSPF  
3
3
In an OSPF NSSA, changing the router ID of the OSPF NSSA ASBR sometimes  
caused the area border router to behave incorrectly.  
Y
-
Y
-
Y
-
Y
-
Y
-
Y
-
Y
-
Y
Y
Y
Y
Y
-
CR00012598  
CR00012607  
This issue has been resolved.  
Switch  
IPv6 multicast routing using the IPv6 accelerator card on an AT-9924T or AT-8948  
switch sometimes caused very high CPU utilisation, even though multicast data  
is switched at wirespeed by the accelerator card.  
This issue has been resolved.  
Version 281-02  
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Features in 281-01  
24  
CR  
Module  
many  
Level  
3
Description  
The command show debug active displays information about currently-active  
debugging for many modules at once. Similarly, the command disable debug  
active disables debugging for many modules in a single step.  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
CR00012708  
This Software Version extends the list of modules that these commands act on.  
They now apply to all modules with debug support, except for DS3, ACC, Q931,  
SA, SYN, TPAD, and X25C.  
IP Gateway  
3
When a link that had RIP configured on it went down, so that the router or switch  
used an alternative route, output from the command show ip route sometimes  
displayed incorrect information when the link came back up. When the link first  
comes back up, the route's RIP metric is still 16, so the alternative route is still the  
“best” route to the target. However, show ip route sometimes displayed a  
disabled route over the original link, with a RIP metric of 16, as the best route,  
even though the router or switch correctly used the alternative route.  
Y
CR00012786  
This issue has been resolved.  
IP Gateway  
3
Previously, the router accepted ARP entries with multicast IP and MAC addresses  
when the MAC disparity feature was disabled. The MAC disparity feature is  
disabled by default.  
Y
Y
Y
-
-
-
-
-
-
-
CR00012895  
The issue has been resolved. The router now discards such ARP entries unless the  
MAC disparity feature has been enabled by using the command enable ip  
macdisparity.  
Log  
3
3
When a user entered the command show log receive=ipadd mask=mask, the  
router or switch displayed an error message that said mask was not a valid  
parameter.  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
-
Y
-
Y
-
Y
-
Y
-
CR00012947  
CR00013007  
This issue has been resolved. The mask parameter is now valid for this command.  
IPsec  
With tunnel-mode IPsec, the router or switch decremented the time to live (TTL)  
of IP packets twice when it forwarded the packets through the tunnel.  
This issue has been resolved.  
Version 281-02  
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Features in 281-01  
25  
CR  
Module  
Firewall  
Level  
3
Description  
When IP NAT or firewall NAT was used, the router or switch sometimes generated  
ICMP messages that specified the wrong source IP address. This meant that the  
response to traceroute could be incorrect.  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
-
-
-
-
-
CR00013048  
This issue has been resolved.  
IPv6  
3
3
The router or switch sometimes rebooted when it processed a large number of  
multicast routes that were created as the result of receiving a large amount of  
data from more than 500 multicast groups.  
-
-
Y
Y
Y
Y
Y
Y
CR00013049  
CR00013085  
This issue has been resolved.  
OSPF  
A user can configure a range on an OSPF ABR, so that the ABR aggregates the  
network advertisements from one area into another area in the form of summary  
LSAs. However, networks advertised into a transit area should not be aggregated  
into summary LSAs. Previously, the router or switch advertised aggregated  
summary LSAs into transit areas when a range had been configured.  
Y
Y
This issue has been resolved. When the router or switch is advertising into a  
transit area, it ignores any configured range.  
Switch  
Core  
3
3
When traffic on a port was mirrored and that port had a learn limit set, packets  
from the CPU (such as ARP replies and ICMP replies) were not always mirrored.  
-
-
-
-
-
-
Y
-
Y
-
Y
Y
Y
-
-
-
-
-
-
-
CR00013093  
CR00013190  
This issue has been resolved.  
If a AT-8624PoE switch had a sticky fan, the fan constantly toggled between  
running at full speed and slowing down. This meant that the fan continuously  
generated alarms.  
This issue has been resolved. If the fan reports an error more than 3 times in an  
hour, it now remains at its maximum speed setting.  
Core  
3
On the AT-8624PoE switch, a fan fault alarm was not generated when the fan  
speed dropped to 70% of the expected speed.  
-
-
-
-
-
Y
-
-
-
-
CR00013202  
This issue has been resolved. When the speed drops to 70% or less, a alarm is  
now generated.  
Version 281-02  
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Features in 281-01  
26  
CR  
Module  
Core  
Level  
3
Description  
The system LED did not indicate when an internal power supply fault occurred.  
-
-
Y
Y
-
-
-
-
-
-
-
-
CR00013243  
This issue has been resolved. The system LED now flashes 3 times to indicate a  
fault. Also, output of the show system command now reports voltages more  
accurately.  
OSPF  
3
3
When a user changed the OSPF priority of an interface, the router or switch did  
not immediately perform the process to elect a Designated Router and Backup  
Designated Router (BDR).  
Y
-
Y
-
Y
-
Y
-
Y
-
Y
-
Y
Y
Y
Y
Y
-
CR00013279  
CR00013353  
This issue has been resolved.  
Switch  
Certain BIST and AUTOBURNIN tests reported errors, especially if an IPv6  
accelerator was installed. Also, if a user entered the commands disable or  
enable switch learning and an IPv6 accelerator was installed, the switch  
displayed an error message that said:  
“SWI ERROR: (1) swmxMacLearningSet [1] - Unable to set learning”  
These issues have been resolved.  
BGP  
3
3
When a user created a BGP module trigger for the peerstate event, the router  
or switch did not allow specification of the script or state parameters.  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
-
-
Y
Y
Y
Y
Y
Y
CR00013421  
CR00013538  
This issue has been resolved. All such generic parameters are now available with  
module-specific triggers.  
IP Gateway  
Software Version 2.8.1 introduced a new msgtype parameter for the command  
add igmp filter, which enables users to filter on IGMP query, report or leave  
messages. This parameter was mistakenly made compulsory. Therefore, if an  
existing configuration script contained IGMP filters, and the router or switch  
restarted with that configuration, the filters did not work.  
Y
Y
This issue has been resolved. The msgtype parameter is now optional, with a  
default of report.  
Version 281-02  
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Features in 281-01  
27  
Level 4  
CR  
Module  
GUI  
Level  
4
Description  
When the web-based GUI is used to add or remove ports from a port-based  
VLAN association on an AT-9812T switch, the icons representing alternate ports  
faced opposite directions.  
-
-
-
-
-
-
-
-
-
-
-
-
-
Y
CR00010159  
This issue has been resolved. The port icons now all have the same orientation.  
IPsec  
4
In output of the commands show ipsec policy and show ipsec policy  
sabundle, the value for the number of bytes currently used by each SA bundle  
was sometimes truncated.  
Y
Y
Y
Y
Y
-
CR00011311  
This issue has been resolved, and both commands now display the correct  
number. As part of this, output of the command show ipsec policy has been  
modified so that the expiry limits in bytes and in seconds display on separate  
lines.  
Also, if the expirykbytes parameter of the command create or set ipsec  
bundlespecification was given a value higher than 4193280, the router or  
switch instead used a lower value.  
This issue has been resolved. If you specify a value above 4193280, the router or  
switch now displays a warning message and sets the expiry limit to 4193280  
kbytes.  
IP Gateway  
4
Previously the switch allowed users to specify the tag parameter when creating  
or modifying a blackhole route with the commands add or set ip route.  
However, blackhole routes cannot be tagged, so the switch did not apply the tag  
setting in its saved configuration.  
-
-
-
-
-
-
-
Y
Y
-
CR00011788  
This issue has been resolved. If a command contains both the blackhole and tag  
parameters, the switch now returns an error message.  
Version 281-02  
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Features in 281-01  
28  
CR  
Module  
Level  
4
Description  
Remote Telnet  
The “?” help description for the enable command stated that the parameter  
rtelnet would “Disable the use of remote telnet to control an asyn port”.  
Y
Y
Y
Y
-
-
-
-
-
-
CR00012270  
This issue has been resolved. The query now states that the command enable  
rtelnet enables remote telnet.  
PPP  
GUI  
4
4
Output of the command show ppp idletimer did not display the PPP interface  
name.  
Y
Y
Y
Y
Y
Y
Y
Y
Y
-
-
-
-
-
Y
-
Y
-
Y
-
CR00012581  
CR00012655  
This issue has been resolved.  
The web-based Graphical User Interface (GUI) did not display software QoS  
counters.  
This issue has been resolved. The counters now display correctly. To access them,  
select Diagnostics in the left-hand menu.  
Install,  
Stacking  
4
4
4
If the local command show config dynamic was entered as a host-directed  
command, the switch gave an incorrect error message.  
-
-
-
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
-
CR00012755  
CR00012774  
CR00012824  
This issue has been resolved. If you attempt to direct show config dynamic to  
a host, the switch now responds with the message “Command is local, do not  
use host direction”.  
IP Gateway,  
TCP  
In an unusual network configuration where the IP subnet on one interface was a  
subset of that on another interface, it was possible for the results of a trace route  
to show erroneous information.  
Y
Y
Y
Y
Y
This issue has been resolved. A search for an interface using an address within  
the interface's subnet now finds the most specific match for the address.  
GUI  
Internet Explorer did not display the switch trunking summary page correctly. If  
the user selected a trunk group, the radio button displayed a grey image, instead  
of displaying a black dot inside a circle. This was only a display issue—the GUI  
acted on the selected trunk group correctly.  
-
-
-
This issue has been resolved.  
Version 281-02  
C613-10482-00 REV B  
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Features in 281-01  
29  
CR  
Module  
L2TP  
Level  
4
Description  
When the router or switch was configured as an LNS and received an incoming  
L2TP call that was associated with a disabled PPP interface, it produced an  
incorrect log message.  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
-
-
Y
Y
Y
Y
Y
CR00012916  
This issue has been resolved.  
Log  
IPv6  
4
4
4
When a user entered the command show log receive=ipadd, information  
about all IP addresses was displayed unless the user also entered the mask  
parameter.  
Y
Y
Y
Y
Y
CR00012946  
CR00013086  
CR00013115  
This issue has been resolved. Specifying an IP address without a mask now limits  
the display to information about that IP address.  
When the router or switch was running MLD and sent an MLD query packet, it  
incremented the OutEchos counter instead of the OutGroupMembQueries  
counter.  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
-
-
Y
Y
Y
Y
This issue has been resolved. To see the OutGroupMembQueries counter, enter  
the command show ipv6 counter.  
IP Gateway  
The “?” help description for the fragment parameter of the add ip interface  
Y
Y
command was unclear.  
This issue has been resolved. The query now states that the parameter “Decides  
if Do Not Fragment is obeyed for IP packet larger than MTU”.  
Version 281-02  
C613-10482-00 REV B  
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Features in 281-01  
30  
Enhancements  
CR  
Module  
Bridge  
Level  
-
Description  
By default, when the router receives a tagged packet on an Eth or VLAN interface  
and bridges it, the bridge strips out the packets VLAN tag. This enhancement  
enables you to set the bridge to instead retain the tag, by using off, no or false  
in the new command:  
Y
Y
Y
-
-
-
-
-
-
-
CR00012620  
set bridge stripvlantag={on|off|yes|no|true|false}  
The default is on. To see whether stripping is turned on or off, use the command:  
show bridge  
and check the new StripVlantag entry.  
L2TP  
-
The connection between the router or switch, acting as an LNS, and a third party  
peer, acting as an LAC, can sometimes fail during PPP link negotiation. Frequent  
negotiation failures can indicate a compatibility problem between the third party  
peer and Proxy Authentication responses from the router or switch. With this  
enhancement, you can now disable Proxy Authentication on the router or switch  
for situations where the third party equipment is not compatible. Use  
proxyauth=off in the command:  
Y
Y
Y
Y
Y
-
-
Y
Y
Y
CR00012692  
add l2tp ip=ipadd[-ipadd] ppptemplate=0..31  
[number={off|on|startup}] [pre13={off|on}]  
[proxyauth={off|on}]  
[tosreflect={off|on|false|true|no|yes}]  
The default for proxyauth is on. Proxy Authentication should not be disabled  
unless necessary.  
To see whether Proxy Authentication is turned on or off, use the command:  
show l2tp ip  
and check the new Proxy Authentication entry.  
Version 281-02  
C613-10482-00 REV B  
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Features in 281-01  
31  
CR  
Module  
File  
Level  
-
Description  
Previously, a user could delete the preferred software release and the current  
boot configuration file (by using the command delete file), without first setting  
a new preferred release or boot configuration file. Therefore, it was possible to  
accidentally delete these files, which caused network disruptions if the router or  
switch restarted. If the router or switch restarted after the user had deleted the  
preferred release, it booted from the fallback software. Similarly, if the router or  
switch restarted after the user had deleted the current boot configuration file, it  
started up with no configuration.  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
CR00012850  
CR00013109  
This enhancement ensures that users can no longer delete the preferred software  
release or the current boot configuration file. If you want to delete the files  
without specifying new preferred files, first use the commands delete  
install=pref or set config=none to stop the files from being preferred.  
Core, SNMP,  
Stack  
-
Stacked devices are now SNMP accessible through a single IP address. The MIB  
Object stackSnmpHost (at-stack.mib) is used to determine which stacked device  
is currently responding to SNMP Requests. By setting the value of  
-
-
-
Y
Y
Y
Y
Y
Y
-
CR00012857  
CR00011277  
stackSnmpHost, an SNMP manager can chose any one of the stacked switches  
to poll. After a new value is set successfully, a new SNMP agent is chosen. On  
SNMP V1 and V2c operations, the new agent is immediately ready to talk to the  
manager. On SNMP v3 operations, the manager needs to re-run engine discovery  
to re-synchronize the agent and manager.  
Traps and notifications from stacked devices now include an extra object called  
hostID, which gives the value of the switchs host ID. This identifies which stacked  
switch produced the trap or notification.  
Switch  
Core  
-
-
New AT-8600 Series switches are now ROHS compliant (lead free). This  
enhancement ensured that the new ROHS compliant 1 gigabit uplink ports are  
fully supported on AT-8648T/2SP switches.  
-
-
-
-
-
-
-
-
-
-
Y
Y
-
-
-
-
-
-
-
-
CR00013394  
CR00013584  
On AT-8624PoE switches, a new 7000 rpm fan is now supported.  
Version 281-02  
C613-10482-00 REV B  
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