D LINK DES 3550 User Manual

DES-3550

Layer 2 Switch

Command Line Interface Reference Manual

First Edition (February 2004)

651ES3550015

Printed In Taiwan

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Table of Contents

Introduction...................................................................................................................................................................................... 1

Using the Console CLI..................................................................................................................................................................... 4

Command Syntax............................................................................................................................................................................. 8

Basic Switch Commands................................................................................................................................................................ 10

Switch Port Commands.................................................................................................................................................................. 21

Port Security Commands................................................................................................................................................................ 24

Network Management (SNMP) Commands .................................................................................................................................. 27

Switch Utility Commands .............................................................................................................................................................. 49

Network Monitoring Commands ................................................................................................................................................... 53

Spanning Tree Commands ............................................................................................................................................................. 66

Forwarding Database Commands .................................................................................................................................................. 72

Broadcast Storm Control Commands............................................................................................................................................. 80

QoS Commands ............................................................................................................................................................................. 82

Port Mirroring Commands ............................................................................................................................................................. 90

VLAN Commands.......................................................................................................................................................................... 94

Asymmetric VLAN Commands................................................................................................................................................... 100

Link Aggregation Commands ...................................................................................................................................................... 102

Basic IP Commands ..................................................................................................................................................................... 108

IGMP Snooping Commands ........................................................................................................................................................ 110

802.1X Commands....................................................................................................................................................................... 120

Access Control List (ACL) Commands ....................................................................................................................................... 132

Traffic Segmentation Commands................................................................................................................................................. 143

Time and SNTP Commands......................................................................................................................................................... 145

ARP Commands........................................................................................................................................................................... 152

Routing Table Commands............................................................................................................................................................ 156

MAC Notification Commands ..................................................................................................................................................... 158

Access Authentication Control Commands.................................................................................................................................. 162

Single IP Management Commands...............................................................................................................................................187

Command History List..................................................................................................................................................................198

Technical Specifications...............................................................................................................................................................201

INTRODUCTION

The Switch can be managed through the Switch’s serial port, Telnet, or the Web-based management agent. The Command Line

Interface (CLI) can be used to configure and manage the Switch via the serial port or Telnet interfaces.

This manual provides a reference for all of the commands contained in the CLI. Configuration and management of the switch

via the Web-based management agent is discussed in the User’s Guide.

Accessing the Switch via the Serial Port

The Switch’s serial port’s default settings are as follows:

•

9600 baud

no parity

8 data bits

1 stop bit

A computer running a terminal emulation program capable of emulating a VT-100 terminal and a serial port configured as

above is then connected to the Switch’s serial port via an RS-232 DB-9 cable.

With the serial port properly connected to a management computer, the following screen should be visible. If this screen does

not appear, try pressing Ctrl+r to refresh the console screen.

Figure 1-1. Initial CLI screen

There is no initial username or password. Just press the Enter key twice to display the CLI input cursor − DES-3550:4#. This is

the command line where all commands are input.

Setting the Switch’s IP Address

Each Switch must be assigned its own IP Address, which is used for communication with an SNMP network manager or other

TCP/IP application (for example BOOTP, TFTP). The Switch’s default IP address is 10.90.90.90. You can change the default

Switch IP address to meet the specification of your networking address scheme.

The Switch is also assigned a unique MAC address by the factory. This MAC address cannot be changed, and can be found on

the initial boot console screen – shown below.

Figure 1-2. Boot Screen

The Switch’s MAC address can also be found in the Web management program on the Switch Information (Basic Settings)

window on the Configuration menu.

The IP address for the switch must be set before it can be managed with the Web-based manager. The Switch IP address can be

automatically set using BOOTP or DHCP protocols, in which case the actual address assigned to the switch must be known.

The IP address may be set using the Command Line Interface (CLI) over the console serial port as follows:

1. Starting at the command line prompt, enter the commands config ipif System ipaddress

xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy. Where the x’s represent the IP address to be assigned to the IP interface named

System and the y’s represent the corresponding subnet mask.

2. Alternatively, you can enter config ipif System ipaddress xxx.xxx.xxx.xxx/z. Where the x’s represent the IP address

to be assigned to the IP interface named System and the z represents the corresponding number of subnets in CIDR

notation.

The IP interface named System on the switch can be assigned an IP address and subnet mask which can then be used to connect

a management station to the switch’s Telnet or Web-based management agent.

Figure 1-3. Assigning an IP Address

In the above example, the Switch was assigned an IP address of 10.53.13.144/8 with a subnet mask of 255.0.0.0. The system

message Success indicates that the command was executed successfully. The Switch can now be configured and managed via

Telnet, SNMP MIB browser and the CLI or via the Web-based management agent using the above IP address to connect to the

Switch.

USING THE CONSOLE CLI

The DES-3550 supports a console management interface that allows the user to connect to the switch’s management agent via a

serial port and a terminal or a computer running a terminal emulation program. The console can also be used over the network

using the TCP/IP Telnet protocol. The console program can be used to configure the Switch to use an SNMP-based network

management software over the network.

This chapter describes how to use the console interface to access the switch, change its settings, and monitor its operation.

Note: Switch configuration settings are saved to non-volatile RAM using

the save command. The current configuration will then be retained in the

switch’s NV-RAM, and reloaded when the Switch is rebooted. If the Switch

is rebooted without using the save command, the last configuration saved

to NV-RAM will be loaded.

Connecting to the Switch

The console interface is used by connecting the Switch to a VT100-compatible terminal or a computer running an ordinary

terminal emulator program (e.g., the HyperTerminal program included with the Windows operating system) using an RS-232C

serial cable. Your terminal parameters will need to be set to:

•

VT-100 compatible

9600 baud

8 data bits

No parity

One stop bit

No flow control

You can also access the same functions over a Telnet interface. Once you have set an IP address for your Switch, you can use a

Telnet program (in VT-100 compatible terminal mode) to access and control the Switch. All of the screens are identical,

whether accessed from the console port or from a Telnet interface.

After the Switch reboots and you have logged in, the console looks like this:

Figure 2-1. Initial Console Screen

Commands are entered at the command prompt, DES-3550:4#.

There are a number of helpful features included in the CLI. Entering the ? command will display a list of all of the top-level

commands.

Figure 2-2. The ? Command

When you enter a command without its required parameters, the CLI will prompt you with a Next possible completions:

message.

Figure 2-3. Example Command Parameter Help

In this case, the command config account was entered with the parameter <username>. The CLI will then prompt you to enter

the <username> with the message, Next possible completions:. Every command in the CLI has this feature, and complex

commands have several layers of parameter prompting.

In addition, after typing any given command plus one space, you can see all of the next possible sub-commands, in sequential

order, by repeatedly pressing the Tab key.

To re-enter the previous command at the command prompt, press the up arrow cursor key. The previous command will appear at

the command prompt.

Figure 2-4. Using the Up Arrow to Re-enter a Command

In the above example, the command config account was entered without the required parameter <username>, the CLI returned

the Next possible completions: <username> prompt. The up arrow cursor control key was pressed to re-enter the previous

command (config account) at the command prompt. Now the appropriate username can be entered and the config account

command re-executed.

All commands in the CLI function in this way. In addition, the syntax of the help prompts are the same as presented in this

manual − angle brackets < > indicate a numerical value or character string, braces { } indicate optional parameters or a choice of

parameters, and brackets [ ] indicate required parameters.

If a command is entered that is unrecognized by the CLI, the top-level commands will be displayed under the Available

commands: prompt.

Figure 2-5. The Next Available Commands Prompt

The top-level commands consist of commands such as show or config. Most of these commands require one or more parameters

to narrow the top-level command. This is equivalent to show what? or config what? Where the what? is the next parameter.

For example, if you enter the show command with no additional parameters, the CLI will then display all of the possible next

parameters.

Figure 2-6. Next possible completions: Show Command

In the above example, all of the possible next parameters for the show command are displayed. At the next command prompt,

the up arrow was used to re-enter the show command, followed by the account parameter. The CLI then displays the user

accounts configured on the Switch.

COMMAND SYNTAX

The following symbols are used to describe how command entries are made and values and arguments are specified in this

manual. The online help contained in the CLI and available through the console interface uses the same syntax.

Note: All commands are case-sensitive. Be sure to disable Caps Lock or any other

unwanted function that changes text case.

Purpose

Encloses a variable or value that must be specified.

Syntax

create ipif <ipif_name> vlan <vlan_name 32> ipaddress

<network_address>

Description

In the above syntax example, you must supply an IP interface name in

the <ipif_name> space, a VLAN name in the <vlan_name 32> space,

and the network address in the <network_address> space. Do not

type the angle brackets.

Example

create ipif Engineering vlan Design ipaddress 10.24.22.5/255.0.0.0

Command

[square brackets]

Purpose

Encloses a required value or set of required arguments. One value or

argument can be specified.

Syntax

create account [admin|user]

Description

In the above syntax example, you must specify either an admin or a

user level account to be created. Do not type the square brackets.

Example

create account admin

Command

| vertical bar

Purpose

Separates two or more mutually exclusive items in a list, one of which

must be entered.

Syntax

show snmp [community|detail]

Description

In the above syntax example, you must specify either

community,

detail. Do not type the backslash.

Example

show snmp community

Command

{braces}

Purpose

Encloses an optional value or set of optional arguments.

Syntax

reset {[config|system]}

{braces}

Description

In the above syntax example, you have the option to specify config or

detail. It is not necessary to specify either optional value, however the

effect of the system reset is dependent on which, if any, value is

specified. Therefore, with this example there are three possible

outcomes of performing a system reset. See the following chapter,

Basic Commands for more details about the reset command.

Example

reset config

command

Line Editing Key Usage

Delete

Deletes the character under the cursor and then shifts the remaining

characters in the line to the left.

Backspace

Insert or Ctrl+R

Deletes the character to the left of the cursor and shifts the remaining

characters in the line to the left.

Toggle on and off. When toggled on, inserts text and shifts previous

text to right.

Left Arrow

Right Arrow

Up Arrow

Moves the cursor to the left.

Moves the cursor to the right.

Repeat the previously entered command. Each time the up arrow is

pressed, the command previous to that displayed appears. This way it

is possible to review the command history for the current session. Use

the down arrow to progress sequentially forward through the command

history list.

Down Arrow

Tab

The down arrow will display the next command in the command history

entered in the current session. This displays each command

sequentially as it was entered. Use the up arrow to review previous

commands.

Shifts the cursor to the next field to the left.

Multiple Page Display Control Keys

Space

Displays the next page.

CTRL+c

Stops the display of remaining pages when multiple pages are to be

displayed.

ESC

Stops the display of remaining pages when multiple pages are to be

displayed.

Displays the next page.

Displays the previous page.

Stops the display of remaining pages when multiple pages are to be

displayed.

Refreshes the pages currently displayed.

Displays the remaining pages without pausing between pages.

Displays the next line or table entry.

Enter

BASIC SWITCH COMMANDS

The basic switch commands in the Command Line Interface (CLI) are listed (along with the appropriate parameters) in the

following table.

Command

Parameters

create account

[admin|user]

config account

show account

delete account

show session

show switch

show serial_port

config serial_port

{baud_rate [9600|19200|38400|115200]

auto_logout [never|2_minutes|5_minutes

|10_minutes|15_minutes]}

enable clipaging

disable clipaging

enable telnet

disable telnet

enable web

disable web

save

<tcp_port_number 1-65535>

reboot

reset

{[config|system]}

logout

Each command is listed, in detail, in the following sections.

create account

Used to create user accounts

Purpose

Syntax

create [admin | user] <username 15>

The create account command is used to create user accounts that

consist of a username of 1 to 15 characters and a password of 0 to 15

characters. Up to 8 user accounts can be created.

Description

Admin <username>

Parameters

Restrictions

User <username>

Only Administrator-level users can issue this command.

Usernames can be between 1 and 15 characters.

Passwords can be between 0 and 15 characters.

Example usage:

To create an administrator-level user account with the username “dlink”.

DES-3550:4#create account admin dlink

Command: create account admin dlink

Enter a case-sensitive new password:****

Enter the new password again for confirmation:****

Success.

DES-3550:4#

config account

Used to configure user accounts

Purpose

Syntax

config account <username>

The config account command configures a user account that has

Description

been created using the create account command.

Parameters

Restrictions

Only Administrator-level users can issue this command.

Usernames can be between 1 and 15 characters.

Passwords can be between 0 and 15 characters.

Example usage:

To configure the user password of “dlink” account:

DES-3550:4#config account dlink

Command: config account dlink

Enter a old password:****

Enter a case-sensitive new password:****

Enter the new password again for confirmation:****

Success.

DES-3550:4#

show account

Used to display user accounts

Purpose

Syntax

show account

Displays all user accounts created on the switch. Up to 8 user

accounts can exist on the switch at one time.

Description

None.

Parameters

Restrictions

Only Administrator-level users can issue this command.

Example usage:

To display the accounts that have been created:

DES-3550:4#show account

Command: show account

Current Accounts:

Username

---------------

dlink

Access Level

------------

Admin

Total Entries: 1

DES-3550:4#

delete account

Used to delete an existing user account

Purpose

Syntax

delete account <username>

The delete account command deletes a user account that has been

Description

created using the create account command.

Parameters

Restrictions

Only Administrator-level users can issue this command.

Example usage:

To delete the user account “System”:

DES-3550:4#delete account System

Command: delete account System

Success.

DES-3550:4#

show session

Used to display a list of currently logged-in users.

Purpose

show session

Syntax

show session

This command displays a list of all the users that are logged-in at

the time the command is issued.

Description

None

Parameters

Restrictions

None.

Example usage:

To display the way that the users logged in:

DES-3550:4#show session

Command: show session

ID Login Time

Live Time From

Level Name

----- -----------

03:36:27 Serial Port 4 Anonymous

-- ------------------------------- ---------

------------

*8 00000 days 00:00:37

show switch

Used to display information about the switch.

show switch

Purpose

Syntax

This command displays information about the switch.

None.

Description

Parameters

Restrictions

Only Administrator-level users can issue this command.

Example usage:

To display the switch information:

DES-3550:4#show switch

Command: show switch

Device Type

Combo Port

MAC Address

IP Address

: DES-3550 Fast Ethernet Switch

: 1000Base-T + 1000Base-T

: 00-01-02-03-04-00

: 10.41.44.22 (Manual)

: default

VLAN Name

Subnet Mask

Default Gateway

: 255.0.0.0

: 0.0.0.0

Boot PROM Version : Build 3.00.001

Firmware Version

Hardware Version

Device S/N

: Build 1.00-B02

: 2A1

Power Status

System Name

: Main – Normal, Redundant – Not Present

: DES-3550

System Location

System Contact

Spanning Tree

GVRP

: 7th_flr_east_cabinet

: Julius_Erving_212-555-6666

: Disabled

IGMP Snooping

TELNET

: Disabled

: Enabled (TCP 23)

: Enabled (TCP 80)

: Enabled

WEB

RMON

Asymmetric VLAN : Disabled

DES-3550:4#

show serial_port

Used to display the current serial port settings.

Purpose

Syntax

show serial_port

This command displays the current serial port settings.

Description

Parameters

Restrictions

None.

None

Example usage:

To display the serial port setting:

DES-3550:4#show serial_port

Command: show serial_port

Baud Rate

Data Bits

Parity Bits

Stop Bits

: 9600

: 8

: None

: 1

Auto-Logout : 10 mins

DES-3550:4#

config serial_port

Used to configure the serial port and the auto logout time for idle

connections.

Purpose

Syntax

config serial_port {baud_rate [9600|19200|38400|115200] |

auto_logout [never | 2_minutes | 5_minutes | 10_minutes |

15_minutes]}

Description

This command is used to configure the serial port’s baud rate and auto

logout settings.

Parameters

baud_rate[9600|19200|38400|115200]− The serial bit rate that will be used

to communicate with the management host. There are four options: 9600,

config serial_port

19200, 38400, 115200.

never − No time limit on the length of time the console can be open with no

user input.

2_minutes − The console will log out the current user if there is no user

input for 2 minutes.

5_minutes − The console will log out the current user if there is no user

input for 5 minutes.

10_minutes − The console will log out the current user if there is no user

input for 10 minutes.

15_minutes − The console will log out the current user if there is no user

input for 15 minutes.

Restrictions

Example usage:

To configure baud rate:

DES-3550:4#config serial_port baud_rate 115200

Only administrator-level users can issue this command.

Command: config serial_port baud_rate 115200

Success.

DES-3550:4#

enable clipaging

Used to pause the scrolling of the console screen when the show

command displays more than one page.

Purpose

Syntax

enable clipaging

This command is used when issuing the show command which

causes the console screen to rapidly scroll through several pages.

This command will cause the console to pause at the end of each

page. The default setting is enabled.

Description

None.

Parameters

Restrictions

Only administrator-level users can issue this command.

Example usage:

To enable pausing of the screen display when the show command output reaches the end of the page:

DES-3550:4#enable clipaging

Command: enable clipaging

Success.

DES-3550:4#

disable clipaging

Used to disable the pausing of the console screen scrolling at the end

of each page when the show command displays more than one

screen of information.

Purpose

Syntax

disable clipaging

This command is used to disable the pausing of the console screen

at the end of each page when the show command would display

more than one screen of information.

Description

None.

Parameters

Restrictions

Only administrator-level users can issue this command.

Example usage:

To disable pausing of the screen display when show command output reaches the end of the page:

DES-3550:4#disable clipaging

Command: disable clipaging

Success.

DES-3550:4#

enable telnet

Used to enable communication with and management of the switch

using the Telnet protocol.

Purpose

Syntax

enable telnet <tcp_port_number 1-65535>

This command is used to enable the Telnet protocol on the switch.

The user can specify the TCP or UDP port number the switch will use

to listen for Telnet requests.

Description

Parameters

<tcp_port_number> − The TCP port number. TCP ports are

numbered between 1 and 65535. The “well-known” TCP port for the

Telnet protocol is 23.

Only administrator-level users can issue this command.

Restrictions

Example usage:

To enable Telnet and configure port number:

DES-3550:4#enable telnet 23

Command: enable telnet 23

Success.

DES-3550:4#

disable telnet

Used to disable the Telnet protocol on the switch.

disable telnet

Purpose

Syntax

This command is used to disable the Telnet protocol on the switch.

None.

Description

Parameters

Restrictions

Only administrator-level users can issue this command.

Example usage:

To disable the Telnet protocol on the switch:

DES-3550:4#disable telnet

Command: disable telnet

Success.

DES-3550:4#

enable web

Used to enable the HTTP-based management software on the

switch.

Purpose

Syntax

enable web <tcp_port_number 1-65535>

This command is used to enable the Web-based management

software on the switch. The user can specify the TCP port number

the switch will use to listen for Telnet requests.

Description

Parameters

<tcp_port_number> − The TCP port number. TCP ports are

numbered between 1 and 65535. The “well-known” port for the Web-

based management software is 80.

Only administrator-level users can issue this command.

Restrictions

Example usage:

To enable HTTP and configure port number:

DES-3550:4#enable web 80

Command: enable web 80

Success.

DES-3550:4#

disable web

Used to disable the HTTP-based management software on the

switch.

Purpose

Syntax

disable web

This command disables the Web-based management software on

the switch.

Description

None.

Parameters

Restrictions

Only administrator-level users can issue this command.

Example usage:

To disable HTTP:

DES-3550:4#disable web

Command: disable web

Success.

DES-3550:4#

save

Used to save changes in the switch’s configuration to non-volatile

RAM.

Purpose

Syntax

save

This command is used to enter the current switch configuration into

non-volatile RAM. The saved switch configuration will be loaded

into the switch’s memory each time the switch is restarted.

Description

None

Parameters

Restrictions

Only administrator-level users can issue this command.

Example usage:

To save the switch’s current configuration to non-volatile RAM:

DES-3550:4#save

Command: save

Saving all configurations to NV-RAM... Done.

DES-3550:4#

reboot

Used to restart the switch.

Purpose

Syntax

reboot

This command is used to restart the switch.

Description

Parameters

Restrictions

None.

Example usage:

To restart the switch:

DES-3550:4#reboot

Command: reboot

Are you sure want to proceed with the system reboot? (y|n)

Please wait, the switch is rebooting...

reset

Used to reset the switch to the factory default settings.

Purpose

Syntax

reset {[config|system]}

This command is used to restore the switch’s configuration to the

default settings assigned from the factory.

Description

Parameters

config − If the keyword ‘config’ is specified, all of the factory default

settings are restored on the switch including the IP address, user

accounts, and the switch history log. The switch will not save or

reboot.

system − If the keyword ‘system’ is specified all of the factory default

settings are restored on the switch. The switch will save and reboot

after the settings are changed to default. Rebooting will clear all

entries in the Forwarding Data Base.

If no parameter is specified, the switch’s current IP address, user

accounts, and the switch history log are not changed. All other

parameters are restored to the factory default settings. The switch

will not save or reboot.

Only administrator-level users can issue this command.

Restrictions

Example usage:

To restore all of the switch’s parameters to their default values:

DES-3550:4#reset config

Command: reset config

Are you sure to proceed with system reset?(y/n)

Success.

DES-3550:4#

Used to log in a user to the switch’s console.

Purpose

Syntax

This command is used to initiate the login procedure. The user will

be prompted for his Username and Password.

Description

None.

Parameters

Restrictions

Example usage:

To initiate the login procedure:

DES-3550:4#login

Command: login

UserName:

logout

Used to log out a user from the switch’s console.

Purpose

Syntax

logout

This command terminates the current user’s session on the

switch’s console.

Description

None.

Parameters

Restrictions

Example usage:

To terminate the current user’s console session:

DES-3550:4#logout

SWITCH PORT COMMANDS

The switch port commands in the Command Line Interface (CLI) are listed (along with the appropriate parameters) in the

following table.

Command

Parameters

config ports

[<portlist | all> {speed [auto | 10_half | 10_full |100_half | 100_full |

1000_full} | flow_control [enable | disable] | learning [enable |

disable] state [enable | disable]} description <desc 32>

show ports

<portlist> {description}

Each command is listed, in detail, in the following sections.

config ports

Used to configure the Switch’s Ethernet port settings.

Purpose

Syntax

config ports [<portlist | all>] {speed [auto | 10_half | 10_full |100_half

| 100_full | 1000_half | 1000_full} | flow_control [enable | disable] |

learning [enable | disable] state [enable | disable] description <desc

32>

This command allows for the configuration of the switch’s Ethernet ports.

Only the ports listed in the <portlist> will be affected.

Description

Parameters

all − Configure all ports on the switch.

<portlist> − Specifies a port or range of ports to be configured. Tauto −

Enables auto-negotiation for the specified range of ports.

[10|100|1000] − Configures the speed in Mbps for the specified range of

ports. Gigabit ports are statically set to 1000 and cannot be set to slower

speeds.

[half|full] − Configures the specified range of ports as either full- or half-

duplex.

[master | slave] This parameter denotes whether the ports selected will be

of the master switch or the slave switch and is only used when the port

speed is selected to be 1000_full.

flow_control [enabled | disabled] – Enable or disable flow control for the

specified ports.

learning [enabled | disabled] − Enables or disables the MAC address

learning on the specified range of ports.

state [enabled | disabled] − Enables or disables the specified range of

ports.

description <desc 32> - Enter an alphanumeric string of no more than 32

characters to describe a selected port interface.

Only administrator-level users can issue this command.

Restrictions

Example usage:

To configure the speed of port 3 to be 10 Mbps, full duplex, with learning and state enabled:

DES-3550:4#config ports 1-3 speed 10_full learning enabled

state enabled

Command: config ports 1-3 speed 10_full learning enabled

state enabled

Success.

DES-3550:4#

show ports

Used to display the current configuration of a range of ports.

Purpose

Syntax

show ports <portlist> {description}

This command is used to display the current configuration of a range

of ports.

Description

Parameters

<portlist> − Specifies a port or range of ports to be displayed.

{description} – Adding this parameter to the show ports command

indicates that the port description will be included in the display.

None.

Restrictions

Example usage:

To display the configuration of all ports on a switch:

DES-3550:4#show ports

Command show ports:

Port Port

State Speed/Duplex/FlowCtrl Speed/Duplex/FlowCtrl Learning

------ -------- ---------------------

Settings

Connection

Address

---------------------

Link Down

100M/Full/None

Link Down

--------

Enabled

Enabled Auto/Enabled

Enabled Auto/Disabled

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Example usage:

To display the configuration of all ports on a switch, with description:

DES-3550:4#show ports description

Command: show ports description

Port Port

Settings

Connection

Address

Learning

--------

State Speed/Duplex/FlowCtrl Speed/Duplex/FlowCtrl

------ --------

Enabled Auto/Disabled

Description: dads1

Enabled Auto/Disabled

Description:

---------------------

Link Down

Enabled

Link Down

Enabled

Enabled Auto/Disabled

Description:

Enabled Auto/Disabled

Description:

Enabled Auto/Disabled

Description:

Enabled Auto/Disabled

Description:

Enabled Auto/Disabled

Description:

Enabled Auto/Disabled

Description:

Enabled Auto/Disabled

Description:

Enabled Auto/Disabled

Description:

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PORT SECURITY COMMANDS

The switch port security commands in the Command Line Interface (CLI) are listed (along with the appropriate parameters) in

the following table.

Command

Parameters

config port_security

ports

[<portlist>| all ] {admin_state [enable| disable]

|max_learning_addr <max_lock_no 0-10> | lock_address_mode

[Permanent | DeleteOnTimeout | DeleteOnReset]}

delete port_security vlan_name <vlan_name 32> mac_address <macaddr> port <port>

entry

clear

port <portlist>

port_security_entry

show port_security

{ports <portlist>}

Each command is listed, in detail, in the following sections.

config port_security ports

Used to configure port security settings.

Purpose

Syntax

config port_security ports [<portlist>| all ] {admin_state [enable|

disable] | max_learning_addr <max_lock_no 0-10> |

lock_address_mode [Permanent | DeleteOnTimeout |

DeleteOnReset]}

This command allows for the configuration of the port security feature.

Only the ports listed in the <portlist> are effected.

Description

Parameters

portlist − specifies a port or range of ports to be configured.

all − configure port security for all ports on the switch.

admin_state [enable|disable] – enable or disable port security for the listed

ports.

max_learning_addr <max_lock_no 0-10> - use this to limit the number of

MAC addresses dynamically listed in the FDB for the ports.

lock_address_mode[Permanent | DeleteOnTimout | DeleteOnReset] –

Indicates the method of locking addresses. The user has three choices:

ꢁ

Permanent – The locked addresses will not age out after the

aging timer expires.

DeleteOnTimeout – The locked addresses will age out after the

aging timer expires.

DeleteOnReset – The locked addresses will not age out until the

switch has been reset.

Only administrator-level users can issue this command.

Restrictions

Example usage:

To configure the port security:

DES-3550:4#config port_security ports 1-5 admin_state enable

max_learning_addr 5 lock_address_mode DeleteOnReset

Command: config port_security ports 1-5 admin_state enable

max_learning_addr 5 lock_address_mode DeleteOnReset

Success.

DES-3550:4#

delete port_security_entry

Used to delete a port security entry by MAC address, port number

and VLAN ID.

Purpose

Syntax

delete port_security_entry vlan name <vlan_name 32>

mac_address <macaddr> port <port>

This command is used to delete a single, previously learned port

security entry by port, VLAN name, and MAC Address.

Description

Parameters

vlan name <vlan_name 32> Enter the corresponding vlan name of

the port which the user wishes to delete.

mac_address <macaddr> - Enter the corresponding MAC address,

previously learned by the port, which the user wishes to delete.

port <port> - Enter the port number which has learned the previously

enterd MAC address.

Only administrator-level users can issue this command.

Restrictions

Example usage:

To delete a port security entry:

DES-3550:4#delete port_security_entry vlan_name default

mac_address 00-01-30-10-2C-C7 port 6

Command: delete port_security_entry vlan_name default

mac_address 00-01-30-10-2C-C7 port 6

Success.

DES-3550:4#

clear port_security_entry

Used to clear MAC address entries learned from a specified port for

Purpose

the port security function.

Syntax

clear port_security_entry port <portlist>

This command is used to clear MAC address entries which were

learned by the switch by a specified port. This command only relates

Description

clear port_security_entry

to the port security function.

Parameters

Restrictions

<portlist> − specifies a port or port range the user wishes to clear.

Only administrator-level users can issue this command.

Example usage:

To clear a port security entry by port:

DES-3550:4# clear port_security_entry port 6

Command: clear port_security_entry port 6

Success.

DES-3550:4#

show port_security

Used to display the current port security configuration.

Purpose

Syntax

show port_security {ports <portlist>}

This command is used to display port security information of the

switch ports. The information displayed includes port security admin

state, maximum number of learning address and lock mode.

Description

Parameters

Restrictions

<portlist> − specifies a port or range of ports to be viewed.

None.

Example usage:

To display the port security configuration:

DES-3550:4#show port_security ports 1-5

Command: show port_security ports 1-5

Port# Admin State Max. Learning Addr. Lock Address Mode

----

-----------

Disabled

-------------------

-----------------

DeleteOnReset

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NETWORK MANAGEMENT (SNMP) COMMANDS

The network management commands in the Command Line Interface (CLI) are listed (along with the appropriate parameters) in

the following table.

The DES-3550 supports the Simple Network Management Protocol (SNMP) versions 1, 2c, and 3. You can specify which

version of the SNMP you want to use to monitor and control the switch. The three versions of SNMP vary in the level of

security provided between the management station and the network device. The following table lists the security features of the

three SNMP versions:

SNMP

Version

Authentication Method

Community String

Description

Community String is used for authentication −

NoAuthNoPriv

v2c

Community String is used for authentication −

NoAuthNoPriv

Username

Username is used for authentication − NoAuthNoPriv

MD5 or SHA

Authentication is based on the HMAC-MD5 or

HMAC-SHA algorithms − AuthNoPriv

MD5 DES or SHA DES

Authentication is based on the HMAC-MD5 or

HMAC-SHA algorithms − AuthPriv.

DES 56-bit encryption is added based on the CBC-

DES (DES-56) standard

Command

Parameters

create snmp user

<username 32> <groupname 32> {encrypted [by_password auth

[md5 <auth_password 8-16 > | sha <auth_password 8-20 >] priv

[none | des <priv_password 8-16> ] | by_key auth [md5 <auth_key

32-32>| sha <auth_key 40-40>] priv [none | des <priv_key 32-

32> ]]}

delete snmp user

show snmp user

create snmp view

delete snmp view

show snmp view

<SNMP_name 32>

<view_name 32> <oid> view_type [included | excluded]

<view_name 32> [all | oid]

<view_name 32>

<community_string 32> view <view_name 32> [read_only |

read_write]

create snmp

community

delete snmp

community

<community_string 32>

show snmp

community

config snmp

engineID

<snmp_engineID>

Command

Parameters

engineID

show snmp

engineID

create snmp group

<groupname 32> {v1 | v2c |v3 [noauth_nopriv | auth_nopriv |

auth_priv ]} {read_view <view_name 32> | write_view

<view_name 32> | notify_view <view_name 32>}

delete snmp group

show snmp groups

create snmp host

<ipaddr> {v1 |v2c | v3 [noauth_nopriv | auth_nopriv | auth_priv]}

<auth_string 32>

delete snmp host

show snmp host

create trusted_host <ipaddr>

delete trusted_host <ipaddr>

show trusted_host

enable snmp traps

enable snmp

authenticate_traps

show snmp traps

disable snmp traps

disable snmp

authenticate_traps

config snmp system <sw_contact>

contact

config snmp system <sw_location>

location

config snmp system <sw_name>

name

enable rmon

disable rmon

Each command is listed, in detail, in the following sections.

create snmp user

Purpose

Used to create a new SNMP user and adds the user to an SNMP

group that is also created by this command

create snmp user

group that is also created by this command.

Syntax

create snmp user <username 32> <groupname 32> {encrypted

[by_password auth [md5 <auth_password 8-16 > | sha

<auth_password 8-20 >] priv [none | des <priv_password 8-

16> ]|by_key auth [md5 <auth_key 32-32>| sha <auth_key 40-

40>] priv [none | des <priv_key 32-32> ]]}

Description

Parameters

The create snmp user command creates a new SNMP user and

adds the user to an SNMP group that is also created by this

command.

<username 32> − An alphanumeric name of up to 32 characters that

will identify the new SNMP user.

<groupname 32> − An alphanumeric name of up to 32 characters

that will identify the SNMP group the new SNMP user will be

associated with.

by_password – Requires the SNMP user to enter a password for

authentication and privacy. The password is defined by specifying

the auth_password below. This method is recommended.

by_key - Requires the SNMP user to enter a encryption key for

authentication and privacy. The key is defined by specifying the

priv_password below. This method is not recommended.

Message integrity − ensures that packets have not been tampered

with during transit.

Authentication − determines if an SNMP message is from a valid

source.

Encryption − scrambles the contents of messages to prevent it being

viewed by an unauthorized source.

encrypted – Specifies that the password will be in an encrypted

format.

auth [md5|sha] – Initiate an authentication-level setting session.

md5 − Specifies that the HMAC-MD5-96 authentication level will be

used.

− Specifies that the HMAC-SHA-96 authentication level will be

sha

used.

<auth_password 8-20> − An alphanumeric sting of between 8 and

20 characters that will be used to authorize the agent to receive

packets for the host.

des <priv_password 8-16> − An alphanumeric string of between 8

and 16 characters that will be used to encrypt the contents of

messages the host sends to the agent.

Restrictions

Only administrator-level users can issue this command.

Example usage:

To create an SNMP user on the switch:

DES-3550:4#create snmp user dlink default encrypted

by_password auth md5 auth_password priv none

Command: create snmp user dlink default encrypted

by_password auth md5 auth_password priv none

Success.

DES-3550:4#

delete snmp user

Used to remove an SNMP user from an SNMP group and also to

delete an entry from the USM User Table Settings

Purpose

Syntax

delete snmp user <usmusername 32>

Description

The delete snmp user command removes an SNMP user from its

SNMP group and then deletes the entry from the USM User Table

Settings.

Parameters

Restrictions

<username 32> − An alphanumeric string of up to 32 characters that

identifies the SNMP user that will be deleted.

Only administrator-level users can issue this command.

Example usage:

To delete a previously entered SNMP user on the switch:

DES-3550:4#delete snmp user dlink

Command: delete snmp user dlink

Success.

DES-3550:4#

show snmp user

Purpose

Used to display information about each SNMP username in the

SNMP group username table.

Syntax

show snmp user

Description

The

command displays information about each

show snmp user

SNMP username in the SNMP group username table.

Parameters

Restrictions

None.

Only administrator-level users can issue this command.

Example usage:

To display the SNMP users currently configured on the switch:

DES-3550:4#show snmp user

Command: show snmp user

Username Group Name Ver

Auth Priv

-------- -------

None None

--------------- --------------

initial initial

-----

Total Entries: 1

DES-3550:4#

create snmp view

Purpose

Used to assign views to community strings to limit which MIB objects

and SNMP manager can access.

Syntax

create snmp view <view_name 32> <oid> view_type [included |

excluded]

Description

Parameters

The create snmp view command assigns views to community

strings to limit which MIB objects an SNMP manager can access.

<view_name 32> − An alphanumeric string of up to 32 characters

that identifies the SNMP view that will be created.

<oid> − The object ID that identifies an object tree (MIB tree) that will

be included or excluded from access by an SNMP manager.

included − Include this object in the list of objects that an SNMP

manager can access.

excluded − Exclude this object from the list of objects that an SNMP

manager can access.

Restrictions

Only administrator-level users can issue this command.

Example usage:

To create an SNMP view:

DES-3550:4#create snmp view dlinkview 1.3.6 view_type

included

Command: create snmp view dlinkview 1.3.6 view_type included

Success.

DES-3550:4#

delete snmp view

Purpose

Used to remove an SNMP view entry previously created on the

switch.

delete snmp view

Syntax

delete snmp view <view_name 32> [all | <oid>]

Description

The command is used to remove an SNMP view

delete snmp view

previously created on the switch.

Parameters

<view_name 32> − An alphanumeric string of up to 32 characters

that identifies the SNMP view to be deleted.

all − Specifies that all of the SNMP views on the switch will be

deleted.

<oid> − The object ID that identifies an object tree (MIB tree) that

will be deleted from the switch.

Restrictions

Example usage:

Only administrator-level users can issue this command.

To delete a previously configured SNMP view from the switch:

DES-3550:4#delete snmp view dlinkview all

Command: delete snmp view dlinkview all

Success.

DES-3550:4#

show snmp view

Purpose

Used to display an SNMP view previously created on the switch.

Syntax

show snmp view {<view_name 32>}

Description

The show snmp view command displays an SNMP view previously

created on the switch in the VACM View Table Settings.

Parameters

Restrictions

<view_name 32> − An alphanumeric string of up to 32 characters

that identifies the SNMP view that will be displayed.

None.

Example usage:

To display SNMP view configuration:

DES-3550:4#show snmp view

Command: show snmp view

Vacm View Table Settings

View Name

--------------------

ReadView

WriteView

NotifyView

Subtree

-------------------------

View Type

----------

Included

1.3.6

1.3.6.1.2.1.1

1.3.6.1.2.1.11

restricted

CommunityView

1.3.6.1.6.3.10.2.1

1.3.6.1.6.3.11.2.1

1.3.6.1.6.3.15.1.1

Included

Excluded

Included

1.3.6.1.6.3

1.3.6.1.6.3.1

Total Entries: 11

DES-3550:4#

create snmp community

Purpose

Used to create an SNMP community string to define the relationship

between the SNMP manager and an agent. The community string

acts like a password to permit access to the agent on the switch.

One or more of the following characteristics can be associated with

the community string:

An Access List of IP addresses of SNMP managers that are

permitted to use the community string to gain access to the switch’s

SNMP agent.

An MIB view that defines the subset of all MIB objects that will be

accessible to the SNMP community.

Read|write or read-only level permission for the MIB objects

accessible to the SNMP community.

Syntax

create snmp community <community_string 32> view

<view_name 32> [read_only | read_write]

Description

The

command is used to create an SNMP

create snmp community

community string and to assign access-limiting characteristics to this

community string.

Parameters

<community_string 32> − An alphanumeric string of up to 32

characters that is used to identify members of an SNMP community.

This string is used like a password to give remote SNMP managers

access to MIB objects in the switch’s SNMP agent.

<view_name 32> − An alphanumeric string of up to 32 characters

that is used to identify the group of MIB objects that a remote SNMP

manager is allowed to access on the switch.

read_only − Specifies that SNMP community members using the

community string created with this command can only read the

contents of the MIBs on the switch.

read_write − Specifies that SNMP community members using the

community string created with this command can read from and

write to the contents of the MIBs on the switch.

Restrictions

Example usage:

To create the SNMP community string “dlink:”

Only administrator-level users can issue this command.

DES-3550:4#create snmp community dlink view ReadView

read_write

Command: create snmp community dlink view ReadView

read_write

Success.

delete snmp community

Purpose

Used to remove a specific SNMP community string from the switch.

Syntax

delete snmp community <community_string 32>

Description

The delete snmp community command is used to remove a

previously defined SNMP community string from the switch.

Parameters

<community_string 32> − An alphanumeric string of up to 32

characters that is used to identify members of an SNMP community.

This string is used like a password to give remote SNMP managers

access to MIB objects in the switch’s SNMP agent.

Restrictions

Only administrator-level users can issue this command.

Example usage:

To delete the SNMP community string “dlink:”

DES-3550:4#delete snmp community dlink

Command: delete snmp community dlink

Success.

DES-3550:4#

show snmp community

Purpose

Used to display SNMP community strings configured on the switch.

Syntax

show snmp community {<community_string 32>}

Description

The show snmp community command is used to display SNMP

community strings that are configured on the switch.

Parameters

Restrictions

<community_string 32> − An alphanumeric string of up to 32

characters that is used to identify members of an SNMP community.

This string is used like a password to give remote SNMP managers

access to MIB objects in the switch’s SNMP agent.

None.

Example usage:

To display the currently entered SNMP community strings:

DES-3550:4#show snmp community

Command: show snmp community

SNMP Community Table

Community Name

View Name

Access Right

------------

-------------------------------- --------------------------------

dlink

ReadView

read_write

read_only

private

public

CommunityView

Total Entries: 3

DES-3550:4#

config snmp engineID

Purpose

Used to configure a name for the SNMP engine on the switch.

Syntax

config snmp engineID <snmp_engineID>

Description

The

command configures a name for the

config snmp engineID

SNMP engine on the switch.

Parameters

Restrictions

<snmp_engineID> − An alphanumeric string that will be used to

identify the SNMP engine on the switch.

Only administrator-level users can issue this command.

Example usage:

To give the SNMP agent on the switch the name “0035636666”

DES-3550:4#config snmp 0035636666

Command: config snmp engineID 0035636666

Success.

DES-3550:4#

show snmp engineID

Purpose

Used to display the identification of the SNMP engine on the switch.

Syntax

show snmp engineID

Description

The show snmp engineID command displays the identification of

the SNMP engine on the switch.

Parameters

None.

show snmp engineID

Restrictions

None.

Example usage:

To display the current name of the SNMP engine on the switch:

DES-3550:4#show snmp engineID

Command: show snmp engineID

SNMP Engine ID : 0035636666

DES-3550:4#

create snmp group

Purpose

Used to create a new SNMP group, or a table that maps SNMP users

to SNMP views. This will set then entry in the VACM Access Table

Settings.

Syntax

create snmp group <groupname 32> [v1|v2c|v3 [noauth_nopriv |

auth_nopriv | auth_priv]] {read_view <view_name 32> |

write_view <view_name 32> | notify_view <view_name 32>}

Description

Parameters

The create snmp group command creates a new SNMP group, or a

table that maps SNMP users to SNMP views.

<groupname 32> − An alphanumeric name of up to 32 characters

that will identify the SNMP group the new SNMP user will be

associated with.

v1 – Specifies that SNMP version 1 will be used. The Simple

Network Management Protocol (SNMP), version 1, is a network

management protocol that provides a means to monitor and control

network devices.

v2c – Specifies that SNMP version 2c will be used. The SNMP v2c

supports both centralized and distributed network management

strategies. It includes improvements in the Structure of Management

Information (SMI) and adds some security features.

v3 – Specifies that the SNMP version 3 will be used. SNMP v3

provides secure access to devices through a combination of

authentication and encrypting packets over the network. SNMP v3

adds:

Message integrity − ensures that packets have not been tampered

with during transit.

Authentication − determines if an SNMP message is from a valid

source.

Encryption − scrambles the contents of messages to prevent it being

viewed by an unauthorized source.

noauth_nopriv − Specifies that there will be no authorization and no

encryption of packets sent between the switch and a remote SNMP

create snmp group

manager.

auth_nopriv − Specifies that authorization will be required, but there

will be no encryption of packets sent between the switch and a

remote SNMP manager.

auth_priv − Specifies that authorization will be required, and that

packets sent between the switch and a remote SNMP manger will be

encrypted.

read_view – Specifies that the SNMP group being created can

request SNMP messages.

write_view – Specifies that the SNMP group being created has write

privileges.

<view_name 32> − An alphanumeric string of up to 32 characters that

is used to identify the group of MIB objects that a remote SNMP

manager is allowed to access on the switch.

notify_view − Specifies that the SNMP group being created can

receive SNMP trap messages generated by the switch’s SNMP

agent.

Restrictions

Example usage:

To create an SNMP group named “sg1:”

DES-3550:4#create snmp group sg1 v3 noauth_nopriv read_view v1

Only administrator-level users can issue this command.

write_view v1 notify_view v1

Command: create snmp group sg1 v3 noauth_nopriv read_view v1

write_view v1 notify_view v1

Success.

DES-3550:4#

delete snmp group

Purpose

Used to remove an SNMP group from the switch.

Syntax

delete snmp group <groupname 32>

Description

The delete snmp group command is used to remove an SNMP

group from the switch.

Parameters

<groupname 32> − An alphanumeric name of up to 32 characters

that will identify the SNMP group the new SNMP user will be

associated with.

Restrictions

Only administrator-level users can issue this command.

Example usage:

To delete the SNMP group named “sg1”.

DES-3550:4#delete snmp group sg1

Command: delete snmp group sg1

Success.

DES-3550:4#

show snmp groups

Purpose

Used to display the group-names of SNMP groups currently

configured on the switch. The security model, level, and status of

each group are also displayed.

Syntax

show snmp groups

Description

The show snmp groups command displays the group-names of

SNMP groups currently configured on the switch. The security

model, level, and status of each group are also displayed.

Parameters

Restrictions

None.

Example usage:

To display the currently configured SNMP groups on the switch:

DES-3550:4#show snmp groups

Command: show snmp groups

Vacm Access

Table Settings

Group Name

: Group3

ReadView Name : ReadView

WriteView Name : WriteView

Notify View Name : NotifyView

Security Model

Security Level

: SNMPv3

: NoAuthNoPriv

Group Name

: Group4

ReadView Name : ReadView

WriteView Name : WriteView

Notify View Name : NotifyView

Security Model

Security Level

: SNMPv3

: authNoPriv

Group Name

: Group5

ReadView Name : ReadView

WriteView Name : WriteView

Notify View Name : NotifyView

Security Model

Security Level

: SNMPv3

: authNoPriv

Group Name

: Group6

ReadView Name : ReadView

WriteView Name : WriteView

Notify View Name : NotifyView

Security Model

Security Level

: SNMPv3

: authPriv

Group Name

: Group7

ReadView Name : ReadView

WriteView Name : WriteView

Notify View Name : NotifyView

Security Model

Security Level

: SNMPv3

: authPriv

Group Name

: initial

ReadView Name : restricted

WriteView Name

Notify View Name : restricted

Security Model

Security Level

: SNMPv3

: NoAuthNoPriv

Group Name

: ReadGroup

ReadView Name : CommunityView

WriteView Name

Notify View Name : CommunityView

Security Model

Security Level

: SNMPv1

: NoAuthNoPriv

Group Name

: ReadGroup

ReadView Name : CommunityView

WriteView Name

Notify View Name : CommunityView

Security Model

Security Level

: SNMPv2

: NoAuthNoPriv

Group Name

: WriteGroup

ReadView Name : CommunityView

WriteView Name : CommunityView

Notify View Name : CommunityView

Security Model

Security Level

: SNMPv1

: NoAuthNoPriv

Group Name

: WriteGroup

ReadView Name : CommunityView

WriteView Name : CommunityView

Notify View Name : CommunityView

Security Model

Security Level

: SNMPv2

: NoAuthNoPriv

Total Entries: 10

DES-3550:4#

create snmp host

Purpose

Used to create a recipient of SNMP traps generated by the switch’s

SNMP agent.

Syntax

create snmp host <ipaddr> [v1 | v2c | v3 [noauth_nopriv |

auth nopriv

| auth

priv] <auth

string 32>]

create snmp host

auth_nopriv | auth_priv] <auth_string 32>]

Description

Parameters

The create snmp host command creates a recipient of SNMP traps

generated by the switch’s SNMP agent.

<ipaddr> − The IP address of the remote management station that

will serve as the SNMP host for the switch.

v1 – Specifies that SNMP version 1 will be used. The Simple

Network Management Protocol (SNMP), version 1, is a network

management protocol that provides a means to monitor and control

network devices.

v2c – Specifies that SNMP version 2c will be used. The SNMP v2c

supports both centralized and distributed network management

strategies. It includes improvements in the Structure of

Management Information (SMI) and adds some security features.

v3 – Specifies that the SNMP version 3 will be used. SNMP v3

provides secure access to devices through a combination of

authentication and encrypting packets over the network. SNMP v3

adds:

Message integrity − ensures that packets have not been tampered

with during transit.

Authentication − determines if an SNMP message is from a valid

source.

Encryption − scrambles the contents of messages to prevent it being

viewed by an unauthorized source.

noauth_nopriv − Specifies that there will be no authorization and no

encryption of packets sent between the switch and a remote SNMP

manager.

auth_nopriv − Specifies that authorization will be required, but there

will be no encryption of packets sent between the switch and a

remote SNMP manager.

auth_priv − Specifies that authorization will be required, and that

packets sent between the switch and a remote SNMP manger will

be encrypted.

<auth_sting 32> − An alphanumeric string used to authorize a

remote SNMP manager to access the switch’s SNMP agent.

Restrictions

Only administrator-level users can issue this command.

Example usage:

To create an SNMP host to receive SNMP messages:

DES-3550:4#create snmp host 10.48.74.100 v3 auth_priv public

Command: create snmp host 10.48.74.100 v3 auth_priv public

Success.

DES-3550:4#

delete snmp host

Purpose

Used to remove a recipient of SNMP traps generated by the switch’s

SNMP agent.

Syntax

delete snmp host <ipaddr>

Description

The delete snmp host command deletes a recipient of SNMP traps

generated by the switch’s SNMP agent.

Parameters

Restrictions

<ipaddr> − The IP address of a remote SNMP manager that will

receive SNMP traps generated by the switch’s SNMP agent.

Only administrator-level users can issue this command.

Example usage:

To delete an SNMP host entry:

DES-3550:4#delete snmp host 10.48.74.100

Command: delete snmp host 10.48.74.100

Success.

DES-3550:4#

show snmp host

Purpose

Used to display the recipient of SNMP traps generated by the

switch’s SNMP agent.

Syntax

show snmp host {<ipaddr>}

Description

The show snmp host command is used to display the IP addresses

and configuration information of remote SNMP managers that are

designated as recipients of SNMP traps that are generated by the

switch’s SNMP agent.

Parameters

Restrictions

<ipaddr> − The IP address of a remote SNMP manager that will

receive SNMP traps generated by the switch’s SNMP agent.

None.

Example usage:

To display the currently configured SNMP hosts on the switch:

DES-3550:4#show snmp host

Command: show snmp host

SNMP Host Table

Host IP Address SNMP Version Community Name/SNMPv3

User Name

---------------

10.48.76.23

10.48.74.100

---------------------

V2c

------------------------------

private

V3 authpriv

public

Total Entries: 2

DES-3550:4#

create trusted_host

Purpose

Used to create the trusted host.

Syntax

create trusted_host <ipaddr>

Description

The create trusted_host command creates the trusted host. The

switch allows you to specify up to four IP addresses that are allowed

to manage the switch via in-band SNMP or TELNET based

management software. These IP addresses must be members of

the Management VLAN. If no IP addresses are specified, then there

is nothing to prevent any IP address from accessing the switch,

provided the user knows the Username and Password.

Parameters

Restrictions

<ipaddr> − The IP address of the trusted host.

Only administrator-level users can issue this command.

Example usage:

To create the trusted host:

DES-3550:4#create trusted_host 10.48.74.121

Command: create trusted_host 10.48.74.121

Success.

DES-3550:4#

show trusted_host

Purpose

Used to display a list of trusted hosts entered on the switch using the

create trusted_host command above.

Syntax

show trusted_host <ipaddr>

Description

This command is used to display a list of trusted hosts entered on

the switch using the

command above

create trusted

host

show trusted_host

the switch using the create trusted_host command above.

Parameters

Restrictions

<ipaddr> − The IP address of the trusted host.

none.

Example Usage:

To display the list of trust hosts:

DES-3550:4#show trusted_host

Command: show trusted_host

Management Stations

IP Address

-----------------------

10.53.13.94

Total Entries: 1

DES-3550:4#

delete trusted_host

Purpose

Used to delete a trusted host entry made using the create

trusted_host command above.

Syntax

delete trusted _host <ipaddr>

Description

This command is used to delete a trusted host entry made using the

create trusted_host command above.

Parameters

Restrictions

<ipaddr> − The IP address of the trusted host.

Only administrator-level users can issue this command.

Example Usage:

To delete a trusted host with an IP address 10.48.74.121:

DES-3550:4#delete trusted_host 10.48.74.121

Command: delete trusted_host 10.48.74.121

Success.

DES-3550:4#

enable snmp traps

Purpose

Used to enable SNMP trap support.

enable snmp traps

Syntax

enable snmp traps

Description

The enable snmp traps command is used to enable SNMP trap

support on the switch.

Parameters

Restrictions

none.

Only administrator-level users can issue this command.

Example usage:

To enable SNMP trap support on the switch:

DES-3550:4#enable snmp traps

Command: enable snmp traps

Success.

DES-3550:4#

enable snmp authenticate_traps

Purpose

Used to enable SNMP authentication trap support.

Syntax

enable snmp authenticate_traps

Description

This command is used to enable SNMP authentication trap support

on the Switch.

Parameters

Restrictions

none.

Only administrator-level users can issue this command.

Example Usage:

To turn on SNMP authentication trap support:

DES-3550:4#enable snmp authenticate_traps

Command: enable snmp authenticate_traps

Success.

DES-3550:4#

show snmp traps

Purpose

Used to show SNMP trap support on the switch .

Syntax

show snmp traps

Description

This command is used to view the SNMP trap support status

currently configured on the Switch

show snmp traps

currently configured on the Switch.

none.

Only administrator-level users can issue this command.

Parameters

Restrictions

Example usage:

To view the current SNMP trap support:

DES-3550:4#show snmp traps

Command: show snmp traps

SNMP Traps

: Enabled

Authenticate Traps : Enabled

DES-3550:4#

disable snmp traps

Purpose

Used to disable SNMP trap support on the switch.

Syntax

disable snmp traps

Description

Parameters

Restrictions

This command is used to disable SNMP trap support on the Switch.

none.

Only administrator-level users can issue this command.

Example Usage:

To prevent SNMP traps from being sent from the Switch:

DES-3550:4#disable snmp traps

Command: disable snmp traps

Success.

DES-3550:4#

disable snmp authenticate_traps

Purpose

Syntax

Used to disable SNMP authentication trap support.

disable snmp authenticate_traps

Description

This command is used to disable SNMP authentication support on

the Switch.

disable snmp authenticate_traps

Parameters

Restrictions

none.

Only administrator-level users can issue this command.

Example Usage:

To disable the SNMP authentication trap support:

DES-3550:4#disable snmp authenticate_traps

Command: disable snmp authenticate_traps

Success.

DES-3550:4#

config snmp system_contact

Purpose

Used to enter the name of a contact person who is responsible for

the switch.

Syntax

config snmp system_contact{<sw_contact>}

Description

The config snmp system_contact command is used to enter the

name and/or other information to identify a contact person who is

responsible for the switch. A maximum of 255 character can be

used.

Parameters

Restrictions

<sw_contact> - A maximum of 255 characters is allowed. A NULL

string is accepted if there is no contact.

Only administrator-level users can issue this command.

Example usage:

To configure the switch contact to “MIS Department II”:

DES-3550:4#config snmp system_contact MIS Department II

Command: config snmp system_contact MIS Department II

Success.

DES-3550:4#

config snmp system_location

Purpose

Syntax

Used to enter a description of the location of the switch.

config snmp system_location {<sw_location>}

Description

The config snmp system_location command is used to enter a

description of the location of the switch. A maximum of 255

config snmp system_location

characters can be used.

Parameters

Restrictions

<sw_location> - A maximum of 255 characters is allowed. A NULL

string is accepted if there is no location desired.

Only administrator-level users can issue this command.

Example usage:

To configure the switch location for “HQ 5F”:

DES-3550:4#config snmp system_location HQ 5F

Command: config snmp system_location HQ 5F

Success.

DES-3550:4#

config snmp system_name

Purpose

Syntax

Used to configure the name for the switch.

config snmp system_name {<sw_name>}

Description

The config snmp system_name command configures the name of

the switch.

Parameters

Restrictions

<sw_name> - A maximum of 255 characters is allowed. A NULL

string is accepted if no name is desired.

Only administrator-level users can issue this command.

Example usage:

To configure the switch name for “DES-3550 Switch”:

DES-3550:4#config snmp system_name DES-3550 Switch

Command: config snmp system_name DES-3550 Switch

Success.

DES-3550:4#

enable rmon

Purpose

Syntax

Used to enable RMON on the switch.

enable rmon

Description

This command is used, in conjunction with the disable rmon

command below, to enable and disable remote monitoring (RMON)

on the switch.

Parameters

Restrictions

none.

Only administrator-level users can issue this command.

Example Usage:

To enable RMON:

DES-3550:4#enable rmon

Command: enable rmon

Success.

DES-3550:4#

disable rmon

Purpose

Used to disable RMON on the switch.

Syntax

disable rmon

Description

This command is used, in conjunction with the enable rmon

command above, to enable and disable remote monitoring (RMON)

on the switch.

Parameters

Restrictions

none.

Only administrator-level users can issue this command.

Example Usage:

To disable RMON:

DES-3550:4#disable rmon

Command: disable rmon

Success.

DES-3550:4#

SWITCH UTILITY COMMANDS

The download/upload commands in the Command Line Interface (CLI) are listed (along with the appropriate parameters) in the

following table.

Command

Parameters

download

[ firmware <ipaddr> <path_filename 64> {section_id <int 1-2>}

configuration <ipaddr> <path_filename 64> {increment} ]

config firmware

section_id <value 1-2> [delete | boot_up]

show

firmware_information

upload

ping

[ configuration | log ] <ipaddr> <path_filename 64>

<ipaddr> {times <value 1-255>} {timeout <sec 1-99>}

Each command is listed, in detail, in the following sections.

download

Purpose

Used to download and install new firmware or a switch configuration

file from a TFTP server.

Syntax

download[ firmware <ipaddr> <path_filename 64> {section_id

<int 1-2>} configuration <ipaddr> <path_filename 64>

{increment} ]

Description

Parameters

This command is used to download a new firmware or a switch

configuration file from a TFTP server.

firmware − Download and install new firmware on the switch from a

TFTP server.

configuration − Download a switch configuration file from a TFTP

server.

<ipaddr> − The IP address of the TFTP server.

<path_filename> − The DOS path and filename of the firmware or

switch configuration file on the TFTP server. For example,

C:\3550.had.

section_id <int 1-2> - Specify the working section id. The Switch can

hold two firmware versions for the user to select from, which are

specified by section id.

increment − Allows the download of a partial switch configuration file.

This allows a file to be downloaded that will change only the switch

parameters explicitly stated in the configuration file. All other switch

parameters will remain unchanged.

Restrictions

The TFTP server must be on the same IP subnet as the switch. Only

administrator-level users can issue this command.

Example usage:

To download a configuration file:

DES-3550:4#download configuration 10.48.74.121 c:\cfg\setting.txt

Command: download configuration 10.48.74.121 c:\cfg\setting.txt

Connecting to server................... Done.

Download configuration............. Done.

DES-3550:4#

config firmware

Purpose

Used to configure the firmware section as a boot up section, or to

delete the firmware section

Syntax

config firmware section_id <int 1-2> [delete | boot_up]

Description

This command is used to configure the firmware section. The user

may choose to remove the firmware section or use it as a boot up

section.

Parameters

section_id – Specifies the working section. The Switch can hold two

firmware versions for the user to select from, which are specified by

section id.

delete – Entering this parameter will delete the specified firmware

section.

boot_up – Entering this parameter will specify the firmware section id

as a boot up section.

Restrictions

Example usage:

To configure firmware section 1 as a boot up section:

DES-3550:4# config firmware section_id 1 boot_up

Only administrator-level users can issue this command.

Command: config firmware section_id 1 boot_up

Success.

DES-3550:4#

show firmware information

Purpose

Used to display the firmware section information.

Syntax

show firmware information

Description

Parameters

This command is used to display the firmware section information

None.

show firmware information

Restrictions

None.

Example usage:

To display the current firmware information on the switch:

DES-3550:4#show firmware information

Command: show firmware information

ID Version Size(B) Update Time

From

User

-- --------

-------

-------------------

------------------

---------------

1 1.00-B00 1360471 00000 days 00:00:00 Serial Port (PROM) Unknown

*2 1.00-B02 2052372 00000 days 00:00:56 10.53.13.94

Anonymous

'*' means boot up section

(T) means firmware update thru TELNET

(S) means firmware update thru SNMP

(W) means firmware update thru WEB

Free space: 3145728 bytes

DES-3550:4#

upload

Purpose

Used to upload the current switch settings or the switch history log to

a TFTP.

Syntax

upload [ configuration | log ] <ipaddr> <path_filename 64>

Description

This command is used to upload either the switch’s current settings

or the switch’s history log to a TFTP server.

Parameters

configuration − Specifies that the switch’s current settings will be

uploaded to the TFTP server.

log − Specifies that the switch history log will be uploaded to the

TFTP server.

<ipaddr> − The IP address of the TFTP server. The TFTP server

must be on the same IP subnet as the switch.

<path_filename> − Specifies the location of the switch configuration

file on the TFTP server. This file will be replaced by the uploaded file

from the switch.

Restrictions

The TFTP server must be on the same IP subnet as the switch.

Only administrator-level users can issue this command.

Example usage:

To upload a configuration file:

DES-3550:4#upload configuration 10.48.74.121 c:\cfg\log.txt

Command: upload configuration 10.48.74.121 c:\cfg\log.txt

Connecting to server................... Done.

Upload configuration...................Done.

DES-3550:4#

ping

Purpose

Used to test the connectivity between network devices.

Syntax

ping <ipaddr> {times <value 1-255>} {timeout <sec 1-99>}

Description

Parameters

The ping command sends Internet Control Message Protocol (ICMP)

echo messages to a remote IP address. The remote IP address will

then “echo” or return the message. This is used to confirm

connectivity between the switch and the remote device.

<ipaddr> - Specifies the IP address of the host.

times - The number of individual ICMP echo messages to be sent.

A value of 0 will send an infinite ICMP echo messages. The

maximum value is 255. The default is 0.

timeout - Defines the time-out period while waiting for a response

from the remote device.

A value of 1 to 99 seconds can be specified. The default is 1 second

None.

Restrictions

Example usage:

To ping a device with the IP address 10.48.74.121 four times:

DES-3550:4#ping 10.48.74.121 times 4

Command: ping 10.48.74.121

Reply from 10.48.74.121, time<10ms

Ping statistics for 10.48.74.121

Packets: Sent =4, Received =4, Lost =0

DES-3550:4#

NETWORK MONITORING COMMANDS

The network monitoring commands in the Command Line Interface (CLI) are listed (along with the appropriate parameters) in

the following table.

Command

show packet ports

show error ports

show utilitzation

clear counters

clear log

Parameters

[cpu | ports {<portlist>}]

ports <portlist>

show log

index <value_list>

enable syslog

disable syslog

show syslog

create syslog host

<index 1-4> ipaddress <ipaddr> {severity

state[enable|disable]

[all | <index 1-4>] {severity [informational | warning |all] |facility

<udp_port_number> | ipaddress <ipaddr> | state [enable |

disable]}

config syslog host

all

delete syslog host

show syslog host

Each command is listed, in detail, in the following sections.

show packet ports

Purpose

Used to display statistics about the packets sent

and received by the switch.

Syntax

show packet ports <portlist>

Description

This command is used to display statistics about

packets sent and received by ports specified in

the port list.

Parameters

Restrictions

<portlist> − specifies a port or range of ports to

be displayed.

None.

Example usage:

To display the packets analysis for port 7 of module 2:

DES-3550:4#show packet port 2

Port number : 2

Frame Size Frame Counts Frame/sec

Frame Type

----------

Total Total/sec

------- ---------

408973 1657

------------

3275

755

----------

RX Bytes

RX Frames

65-127

395

128-255

256-511

512-1023

1024-1518

316

145

TX Bytes

7918

111

178

TX Frames

Unicast RX

152

557

Multicast RX

Broadcast RX 3686

DES-3550:4#

show error ports

Purpose

Used to display the error statistics for a range of ports.

Syntax

show error ports <portlist>

Description

This command will display all of the packet error statistics collected

and logged by the switch for a given port list.

Parameters

Restrictions

<portlist> − specifies a port or range of ports to be displayed.

None.

Example usage:

To display the errors of port 3:

DES-3550:4#show errors port 3

RX Frames

TX Frames

---------------

----------------

CRC Error

Undersize

Oversize

Fragment

Jabber

Excessive Deferral

CRC Error

Late Collision

Excessive Collision

Single Collision

Collision

Drop Pkts

20837

DES-3550:4#

show utilization

Purpose

Used to display real-time port and cpu utilization statistics.

Syntax

show utilization [cpu | ports {<portlist>}]

Description

This command will display the real-time port and cpu utilization

statistics for the switch.

Parameters

cpu – Entering this parameter will display the current cpu utilization

of the switch.

ports - Entering this parameter will display the current port

utilization of the switch.

ꢁ

<portlist> Specifies a port or range of ports to be displayed.

Restrictions

None.

Example usage:

To display the port utilization statistics:

DES-3550:4#show utilization ports

Command: show utilization ports

Port TX/sec

RX/sec Util

Port TX/sec RX/sec

Util

------ ---------- ----------

----

------ ---------- ---------- ----

CTRL+C ESC q Quit Space n Next Page p Previous Page r Refresh

To display the current cpu utilization:

DES-3550:4#show utilization cpu

Command: show utilization cpu

CPU utilization :

-------------------------------------------------------------------------------

Five seconds - 15%

One minute - 25%

Five minutes - 14%

DES-3550:4#

clear counters

Purpose

Used to clear the switch’s statistics counters.

Syntax

clear counters {ports <portlist>}

Description

This command will clear the counters used by the switch to compile

statistics.

Parameters

Restrictions

<portlist> − specifies a port or range of ports to be displayed.

Only administrator-level users can issue this command.

Example usage:

To clear the counters:

DES-3550:4#clear counters ports 2-9

Command: clear counters ports 2-9

Success.

DES-3550:4#

clear log

Purpose

Used to clear the switch’s history log.

clear log

Syntax

Description

Parameters

Restrictions

This command will clear the switch’s history log.

None.

Only administrator-level users can issue this command.

Example usage:

To clear the log information:

DES-3550:4#clear log

Command: clear log

Success.

DES-3550:4#

show log

Purpose

Used to display the switch history log.

Syntax

show log {index <value>}

Description

Parameters

This command will display the contents of the switch’s history log.

index <value> − This command will display the history log, beginning

at 1 and ending at the value specified by the user in the <value> field.

If no parameter is specified, all history log entries will be displayed.

None.

Restrictions

Example usage:

To display the switch history log:

DES-3550:4#show log index 5

Command: show log index 5

Index Time

Log Text

----------------------------------------------------

----- -------------------

00000 days 00:01:09 Successful login through Console (Username: Anonymous)

00000 days 00:00:14 System started up

00000 days 00:00:06 Port 1 link up, 100Mbps FULL duplex

00000 days 00:00:01 Spanning Tree Protocol is disabled

00000 days 00:06:31 Configuration saved to flash (Username: Anonymous)

DES-3550:4#

enable syslog

Purpose

Used to enable the system log to be sent to a remote host.

Syntax

enable syslog

Description

The enable syslog command enables the system log to be sent to a

remote host.

Parameters

Restrictions

None.

Only administrator-level users can issue this command.

Example usage:

To the syslog function on the switch:

DES-3550:4#enable syslog

Command: enable syslog

Success.

DES-3550:4#

disable syslog

Purpose

Used to enable the system log to be sent to a remote host.

Syntax

disable syslog

Description

The disable syslog command enables the system log to be sent to

a remote host.

Parameters

Restrictions

None.

Only administrator-level users can issue this command.

Example usage:

To disable the syslog function on the switch:

DES-3550:4#disable syslog

Command: disable syslog

Success.

DES-3550:4#

show syslog

Purpose

Used to display the syslog protocol status as enabled or disabled.

Syntax

show syslog

Description

The show syslog command displays the syslog status as enabled

or disabled.

Parameters

Restrictions

None.

Example usage:

To display the current status of the syslog function:

DES-3550:4#show syslog

Command: show syslog

Syslog Global State: Enabled

DES-3550:4#

create syslog host

Purpose

Used to create a new syslog host.

Syntax

create syslog host <index 1-4> ipaddress <ipaddr> {severity

state[enable|disable]

Description

Parameters

The

command is used to create a new syslog

create syslog host

host.

<index 1-4> − Specifies that the command will be applied to an index

of hosts. There are four available indexes, numbered 1 through 4.

ipaddress <ipaddr> − Specifies the IP address of the remote host

where syslog messages will be sent.

severity − Severity level indicator. These are described in the

following:

Bold font indicates that the corresponding severity level is currently

supported on the switch.

Numerical

Code

Severity

Emergency: system is unusable

Alert: action must be taken immediately

Critical: critical conditions

Error: error conditions

Warning: warning conditions

Notice: normal but significant condition

Informational: informational messages

Debug: debug-level messages

informational − Specifies that informational messages will be sent to

the remote host. This corresponds to number 6 from the list above.

warning − Specifies that warning messages will be sent to the

remote host. This corresponds to number 4 from the list above.

all − Specifies that all of the currently supported syslog messages

that are generated by the switch will be sent to the remote host.

create syslog host

facility − Some of the operating system daemons and processes

have been assigned Facility values. Processes and daemons that

have not been explicitly assigned a Facility may use any of the"local

use" facilities or they may use the "user-level" Facility. Those

Facilities that have been designated are shown in the following: Bold

font indicates the facility values that the switch currently supports.

Numerical

Code

Facility

kernel messages

user-level messages

mail system

system daemons

security|authorization messages

messages generated internally by syslog

line printer subsystem

network news subsystem

UUCP subsystem

clock daemon

security|authorization messages

FTP daemon

NTP subsystem

log audit

log alert

clock daemon

local use 0 (local0)

local use 1 (local1)

local use 2 (local2)

local use 3 (local3)

local use 4 (local4)

local use 5 (local5)

local use 6 (local6)

local use 7 (local7)

local0 − Specifies that local use 0 messages will be sent to the

create syslog host

remote host. This corresponds to number 16 from the list above.

local1 − Specifies that local use 1 messages will be sent to the

remote host. This corresponds to number 17 from the list above.

local2 − Specifies that local use 2 messages will be sent to the

remote host. This corresponds to number 18 from the list above.

local3 − Specifies that local use 3 messages will be sent to the

remote host. This corresponds to number 19 from the list above.

local4 − Specifies that local use 4 messages will be sent to the

remote host. This corresponds to number 20 from the list above.

local5 − Specifies that local use 5 messages will be sent to the

remote host. This corresponds to number 21 from the list above.

local6 − Specifies that local use 6 messages will be sent to the

remote host. This corresponds to number 22 from the list above.

local7 − Specifies that local use 7 messages will be sent to the

remote host. This corresponds to number 23 from the list above.

udp_port <udp_port_number> − Specifies the UDP port number that

the syslog protocol will use to send messages to the remote host.

state [enable | disable] − Allows the sending of syslog messages to

the remote host, specified above, to be enabled and disabled.

Restrictions

Example usage:

To create syslog host:

Only administrator-level users can issue this command.

DES-3550:4#create syslog host 1 severity all facility local0

Command: create syslog host 1 severity all facility local0

Success.

DES-3550:4#

config syslog host

Purpose

Used to configure the syslog protocol to send system log data to a

remote host.

Syntax

config syslog host [all | <index 1-4>] {severity [informational |

ipaddress <ipaddr> | state [enable | disable]

Description

Parameters

The config syslog host command is used to configure the syslog

protocol to send system log information to a remote host.

all − Specifies that the command will be applied to all hosts.