D-Link 3250TG - Switch Reference Manual
Text of the manual
Layer 2 Switch
Command Line Interface
Reference Manual
First Edition (February 2003)
DES3250TG.A1
Printed In Taiwan
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Table of Contents
Introduction........................................................................ 11
Using the Console CLI......................................................... 16
Command Syntax................................................................ 24
Basic Switch Commands..................................................... 29
Switch Port Commands....................................................... 49
Network Management Commands....................................... 53
Download/Upload Commands ............................................ 76
Network Monitoring Commands .......................................... 80
Spanning Tree Commands .................................................. 88
Layer 2 Forwarding Database Commands ........................... 96
Broadcast Storm Control Commands ................................ 111
QOS Commands ............................................................... 115
Port Mirroring Commands................................................. 134
VLAN Commands .............................................................. 141
Link Aggregation Commands............................................. 155
IP Interface Commands ..................................................... 163
IGMP Snooping Commands............................................... 167
Routing Table Commands ................................................. 181
Command History List ...................................................... 185
Technical Specifications .................................................... 191
Switch System Messages................................................... 194
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
11
1
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/ANSI terminal and a serial port configured
as above is then connected to the switch’s serial port via an RS-
232 DB-9 cable.
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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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 Console screen.
There is no initial username or password. Just press the Enter
key twice to display the CLI input cursor − local>. 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.
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The switch is also assigned a unique MAC address by the
factory. This MAC address cannot be changed, and can be found
from the initial boot console screen – shown below.
Figure 1-2. Boot Screen
The switch’s MAC address can also be found from 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
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
14
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 the Switch an IP Address
In the above example, the switch was assigned an IP address of
10.24.22.5 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
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
15
via Telnet and the CLI or via the Web-based management agent
using the above IP address to connect to the switch.
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
16
2
USING THE CONSOLE
CLI
The DES-3250TG 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.
Switch configuration settings are saved to non-
volatile RAM using 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
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
17
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/ANSI compatible
•
9,600 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:
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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Figure 2-1. Initial Console Screen
Commands are entered at the command prompt, local>.
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.
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
19
Figure 2-2. The ? Command
The dir command has the same function as the ? command.
When you enter a command without its required parameters,
the CLI will prompt you with a Next possible completions:
message.
Alternatively, if you hit the Tab key immediately after you have
entered a command, the CLI will display all the next available
parameters sequentially.
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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Figure 2-3. Example Command Parameter Help
In this case, the command config account was entered with the
parameter . The CLI will then prompt you to enter
the
with
the
message,
Next
possible
completions:. Every command in the CLI has this feature, and
complex commands have several layers of parameter prompting.
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.
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
21
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 , the CLI
returned the Next possible completions: prompt.
The up arrow cursor control key was pressed to re-enter the
previous command (config account) at the command prompt.
Now the appropriate User name 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.
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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Figure 2-5. The Available Commands Prompt
The top-level commands consist of commands like 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.
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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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.
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
24
3
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.
Purpose
Encloses a variable or value that must be
specified.
Syntax
create
ipif
vlan
ipaddress
Description
In the above syntax example, you must
supply an IP interface name in the
space, a VLAN name in the
space, and the network
address in the space.
Do not type the angle brackets.
Example
Command
create ipif Engineering vlan Design
ipaddress 10.24.22.5/255.0.0.0
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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[square brackets]
Purpose
Encloses a required value or set of required
arguments.
One
or
more
values
or
arguments 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
Command
create account admin
/slash
Purpose
Separates two or more mutually exclusive
items in a list − one of which must be
entered.
Syntax
show snmp [community/trap receiver]
Description
In the above syntax example, you must
specify either community, trap receiver, or
detail. Do not type the backslash.
Example
Command
show snmp community
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
26
{braces}
Purpose
Encloses an optional value or set of
optional arguments.
Syntax
config igmp [/all] {version
/query_interval
/max_response_time /
robustness_variable
/last_member_query_interval
/state [enabled/disabled]}
Description
In the above syntax example, you must
choose to enter an IP interface name in the
space or all, but version
, query_interval ,
max_response_time ,
robustness_variable ,
last_member_query_interval , and
state [enabled/disabled] are all optional
arguments. You can specify any or all of
the arguments contained by braces. Do not
type the braces.
Example
command
config igmp all version 2
Line Editing Key Usage
Delete
Deletes character under the cursor and
then shifts the remaining characters in the
line to the left.
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Line Editing Key Usage
Backspace
Deletes the character to the left of the
cursor and shifts the remaining characters
in the line to the left.
Insert
Can be toggled on or off. When toggled on,
inserts text at the current cursor position
and shifts the remainder of the line to the
left.
Left Arrow
Moves the cursor to the left.
Right Arrow
Moves the cursor to the right.
Tab
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.
n
Displays the next page.
p
Displays the previous page.
q
Stops the display of remaining pages when
multiple pages are to be displayed.
r
Refreshes the pages currently displaying.
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
28
Line Editing Key Usage
a
Displays the remaining pages without
pausing between pages.
Enter
Displays the next line or table entry.
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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4
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
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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Command
Parameters
disable web
save
reboot
reset
{config/system}
login
logout
Each command is listed, in detail, in the following sections.
create account
Purpose
Used to create user accounts
Syntax
create [admin/user]
Description
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.
Parameters
Admin
User
Restrictions
Only Administrator-level users can issue
this command.
Usernames can be between 1 and 15
characters.
Passwords can be between 0 and 15
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31
create account
characters.
Example Usage:
To create an administrator-level user account with the
username “dlink”.
local>create account admin dlink
Command: create account admin dlink
Enter a case-sensitive new password:****
Enter the new password again for confirmation:****
Success.
local>
config account
Purpose
Used to configure user accounts
Syntax
config account
Description
The config account command configures a
user account that has been created using
the create account command.
Parameters
Restrictions
Only Administrator-level users can issue
this command.
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
32
config account
Usernames can be between 1 and 15
characters.
Passwords
can
be
between
0
15
characters.
Example Usage:
To configure the user password of “dlink” account:
local>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.
local>
show account
Purpose
Used to display user accounts
Syntax
show account
Description
Displays all user accounts created on the
switch. Up to 8 user accounts can exist on
the switch at one time.
Parameters
none.
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
33
show account
Restrictions
none.
Example Usage:
To display the accounts which have been created:
local>show account
Command: show account
Current Accounts:
Username Access Level
--------------- ------------
dlink Admin
local>
delete account
Purpose
Used to delete an existing user account
Syntax
delete account
Description
The delete account command deletes a
user account that has been 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-3250TG Layer 2 Fast Ethernet Switch User’s Guide
34
local>delete account System
Command: delete account System
Success.
local>
show session
Purpose
Used to display a list of currently logged-in
users.
Syntax
show session
Description
This command displays a list of all the
users that are logged-in at the time the
command is issued.
Parameters
none
Restrictions
none.
Example Usage:
To display the way that the users logged in:
local>show session
ID Live Time From Level Name
--- ------------ ------------ ------- ----------------
8 0:17:16.2 Serial Port 4 Anonymous
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
35
show switch
Purpose
Used to display information about the
switch.
Syntax
show switch
Description
This command displays information about
the switch.
Parameters
none.
Restrictions
none.
Example Usage:
To display the switch information:
local>show switch
Command: show switch
Device Type : DES-3250 Fast-Ethernet Switch
Ext. Ports : 1000TX + 1000TX
MAC Address : 00-01-02-03-04-00
IP Address : 10.90.90.90 (Manual)
VLAN Name : default
Subnet Mask : 255.0.0.0
Default Gateway : 0.0.0.0
Boot PROM Version : Build 1.00.001
Firmware Version : Build 1.00.024
Hardware Version : 0A1
System Name :
System Location :
System Contact :
Spanning Tree : Disabled
GVRP : Disabled
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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IGMP Snooping : Disabled
TELNET : Enabled (TCP 23)
WEB : Enabled (TCP 80)
RMON : Disabled
local>
show serial_port
Purpose
Used to display the current serial port
settings.
Syntax
show serial_port
Description
This command displays the current serial
port settings.
Parameters
none.
Restrictions
none
Example Usage:
To display the serial port setting:
local>show serial_port
Command: show serial_port
Baud Rate : 9600
Data Bits : 8
Parity Bits : None
Stop Bits : 1
Auto-Logout : 10 mins
local>
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config serial_port
Purpose
Used to configure the serial port.
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.
Parameter
s
[9600/19200/38400/115200] − The serial bit
rate that will be used to communicate with the
management host.
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
Only administrator-level users can issue this
command.
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Example Usage:
To configure baud rate:
local>config serial_port baud_rate 9600
Command: config serial_port baud_rate 9600
Success.
local>
enable clipaging
Purpose
Used to pause the scrolling of the console
screen when the show command displays
more than one page.
Syntax
enable clipaging
Description
This command is used when issuing the
show command will cause 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.
Parameters
none.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
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To enable pausing of the screen display when show
command output reaches the end of the page:
local>enable clipaging
Command: enable clipaging
Success.
local>
disable clipaging
Purpose
Used to disable the pausing of the console
screen scrolling at the end of each page
when the show command would display
more than one screen of information.
Syntax
disable clipaging
Description
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.
Parameters
none.
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:
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local>disable clipaging
Command: disable clipaging
Success.
local>
enable telnet
Purpose
Used to enable communication with and
management of the switch using the Telnet
protocol.
Syntax
enable telnet
Description
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.
Parameters
−
The
TCP
port
number. TCP ports are numbered between
1 and 65535. The “well-known” TCP port
for the Telnet protocol is 23.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To enable Telnet and configure port number:
local>enable telnet 23
Command: enable telnet 23
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42
Success.
local>
disable telnet
Purpose
Used to disable the Telnet protocol on the
switch.
Syntax
disable telnet
Description
This command is used to disable the Telnet
protocol on the switch.
Parameters
none.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To disable the Telnet protocol on the switch:
local>disable telnet
Command: disable telnet
Success.
local>
enable web
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enable web
Purpose
Used
to
enable
the
HTTP-based
management software on the switch.
Syntax
enable web
Description
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.
Parameters
−
The
TCP
port
number. TCP ports are numbered between
1 and 65535. The “well-known” port for the
Web-based management software is 80.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To enable HTTP and configure port number:
local>enable web 80
Command: enable web 80
Success.
local>
disable web
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disable web
Purpose
Used
to
disable
the
HTTP-based
management software on the switch.
Syntax
disable web
Description
This command disables the Web-based
management software on the switch.
Parameters
none.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To disable HTTP:
local>disable web
Command: disable web
Success.
local>
save
Purpose
Used to save changes in the switch’s
configuration to non-volatile RAM.
Syntax
Save
Description
This command is used to enter the current
switch configuration into non-volatile RAM.
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45
save
The saved switch configuration will be
loaded into the switch’s memory each time
the switch is restarted.
Parameters
none.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To save the switch’s current configuration to non-volatile
RAM:
local>save
Command: save
Saving all settings to NV-RAM... 100%
done.
local>
reboot
Purpose
Used to restart the switch.
Syntax
reboot
Description
This command is used to restart the
switch.
Parameters
none.
Restrictions
none.
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46
Example Usage:
To restart the switch:
local>reboot
Command: reboot
Are you sure want to proceed with the
system reboot? (y/n)
Please wait, the switch is rebooting...
reset
Purpose
Used to reset the switch to the factory
default settings.
Syntax
reset {config/system}
Description
This command is used to restore the
switch’s
configuration
to
the
default
settings assigned from the factory.
Parameters
config − If config is specified, all of the
factory default settings are restored on the
switch except for the IP address, user
accounts, and the switch history log.
system − If system is specified all of the
factory default settings are restored on the
switch.
If no parameter specified, the switch’s
current IP address, user accounts, and
switch history log are retained. All other
parameters are restored to their factory
default settings.
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reset
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To restore all of the switch’s parameters to their default
values:
local>reset config
Command: reset config
Success.
local>
login
Purpose
Used to log in a user to the switch’s
console.
Syntax
login
Description
This command is used to initiate the login
procedure. The user will be prompted for
his Username and Password.
Parameters
none.
Restrictions
none.
Example Usage:
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To initiate the login procedure:
local>login
Command: login
UserName:
logout
Purpose
Used to log out a user from the switch’s
console.
Syntax
logout
Description
This command terminates the current
user’s session on the switch’s console.
Parameters
none.
Restrictions
none.
Example Usage:
To terminate the current user’s console session:
local>logout
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5
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
speed
[auto/10_half/10_full/100_half/100_full/
1000_half/1000_full]
learning [enabled/disabled]
state [enabled/disabled]
show ports
Each command is listed, in detail, in the following sections.
config ports
Purpose
Used to configure the switch’s Ethernet port
settings.
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50
config ports
Syntax
config ports [] {speed
[auto/10_half/10_full/100_half/100_full/
1000_half/1000_full]
learning [enabled/disabled]
state [enabled/disabled]}
Description
This command allows for the configuration of
the switch’s Ethernet ports. Only the ports
listed in the will be affected.
Parameters
all − Displays all ports on the switch to be
configured.
portlist − Specifies a range of ports to be
configured. The port list is specified by listing
the beginning port number and the highest port
number of the range. The beginning and end of
the port list range are separated by a dash. For
example, 3 would specify port 3. 4 specifies port
4. 3-4 specifies all of the ports between port 3
and port 4 − in numerical order.
auto − Enables auto-negotiation for the specified
range of ports.
[10/100/1000] − Configures the speed in Mbps
for the specified range of ports.
[half/full] − Configures the specified range of
ports as either full- or half-duplex.
learning
[enabled/disabled]
−
Enables
or
disables the MAC address learning on the
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51
config ports
specified range of ports.
state [enabled/disabled] − Enables or disables
the specified range of ports.
Restrictions
Only administrator-level users can issue this
command.
Example Usage:
To configure the speed of port 3 to be 10 Mbps, full
duplex, learning and state enabled:
local>config ports 1-3 speed 10_full learning enabled
state enabled
Command: config ports 1-3 speed 10_full learning
enabled state enabled
Success.
show ports
Purpose
Used to display the current configuration of
a range of ports.
Syntax
show ports {}
Description
This command is used to display the
current configuration of a range of ports.
Parameters
all − Displays all ports on the switch.
− Specifies a range of ports to
be configured. The port list is specified by
listing the beginning port number and the
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52
show ports
highest port number of the range. The
beginning and end of the port list range are
separated by a dash. For example, 3 would
specify port 3. 4 specifies port 4. 3-4
specifies all of the ports between port 3 and
port 4 − in numerical order.
Restrictions
none.
Example Usage:
To display the configuration of the ports 1-7:
local>show ports 1-7
Command: show ports 1-7
Port Port Settings Connection Address
State Speed/Duplex Speed/Duplex Learning
---- -------- --------------------- --------------------- -----------
1 Enabled Auto Link Down Enabled
2 Enabled Auto Link Down Enabled
3 Enabled Auto Link Down Enabled
4 Enabled Auto Link Down Enabled
5 Enabled Auto Link Down Enabled
6 Enabled Auto Link Down Enabled
7 Enabled Auto Link Down Enabled
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53
6
NETWORK MANAGEMENT
COMMANDS
The network management commands in the Command Line
Interface (CLI) are listed (along with the appropriate parameters)
in the following table.
Command
Parameters
create snmp
community
[readonly/readwrite]
delete snmp
community
create snmp
trap_receiver
delete snmp
trap_receiver
enable rmon
disable rmon
config snmp
community
[readonly/readwrite]
config snmp
system_contact
config snmp
system_location
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54
Command
Parameters
config snmp
system_name
config snmp
trap_receiver
enable snmp traps
disable snmp
traps
enable snmp
authenticate traps
disable snmp
authenticate traps
create
trusted_host
show
trusted_host
delete
trusted_host
show snmp
[community/trap_receiver]
ping
times
timeout
Each command is listed, in detail, in the following sections.
create snmp community
Purpose
Used to create an SNMP community string.
Syntax
create snmp community
[readonly/readwrite]
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55
create snmp community
Description
This command is used to create an SNMP
community string and to specify the string
as
enabling
read
only
or
read-write
privileges for the SNMP management host.
Parameters
− An alphanumeric
string of up to 32 characters used to
authentication of users wanting access to
the switch’s SNMP agent.
readonly − Allows the user using the above
community string to have read only access
to the switch’s SNMP agent. The default
read only community string is public.
readwrite − Allows the user using the above
community string to have read and write
acces to the switch’s SNMP agent. The
default read write community string is
private.
Restrictions
Only administrator-level users can issue
this
command.
A
maximum
of
4
community strings can be specified.
Example Usage:
To create a read-only level SNMP community “System”:
local>create snmp community System readwrite
Command: create snmp community System readwrite
Success.
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local>
delete snmp community
Purpose
Used to delete an SNMP community string
previously entered on the switch.
Syntax
delete snmp community
Description
This command is used to delete an SNMP
community string entered on the switch
using
the
create
SNMP
community
command above.
Parameters
− An alphanumeric
string of up to 32 characters used to
authentication of users wanting access to
the switch’s SNMP agent.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To delete a read-only level SNMP community “System”:
local>delete snmp community System
Command: delete snmp community System
Success.
local>
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57
create snmp trap_receiver
Purpose
Used to specify a management station, by
IP address and community string, that will
receive traps generated by the switch’s
SNMP agent.
Syntax
create snmp trap_receiver
Description
This command is used to specify the IP
address of a management station that will
receive traps generated by the switch’s
SNMP agent and the community string that
will be used to authenticate the
management station’s privileges.
Parameters
− The IP address of a
management station that will receive SNMP
traps generated by the switch’s SNMP
agent.
− An alpha-numeric
string of up to 32 characters that will be
used to authenticate management stations
that want to receive SNMP traps from the
switch’s SNMP agent.
Restrictions
Only administrator-level users can issue
this command. A maximum of 3 trap
receivers can be specified.
Example Usage:
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58
To create a trap receiver 10.1.1.1 in read-only level
SNMP community:
local>create snmp trap_receiver 10.1.1.1 System
Command: create snmp trap_receiver 10.1.1.1 System
Success.
local>
delete snmp trap_receiver
Purpose
Used to delete a trap receiver entry on the
switch
made
using
create
SNMP
trap_reciever above.
Syntax
delete snmp trap_reciever
Description
The command allows the user to delete an
SNMP trap receiver specified previously
using the create trap_receiver command
above.
Parameters
−
The
IP
address
of
the
management station that is currently
specified to receive traps from the switch’s
SNMP agent. This management station will
be deleted from the list of up to three that
can be entered using the create SNMP
trap_receiver commmand above.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
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59
To delete a trap receiver 10.1.1.1:
local>delete snmp trap_receiver 10.1.1.1
Command: delete snmp trap_receiver 10.1.1.1
Success.
local>
config snmp community
Purpose
Used to create an SNMP community string.
Syntax
config snmp community
[readonly/readwrite]
Description
This command is used to create an SNMP
community string on the switch that will be
used to authenticate management stations
that want to access the switch using SNMP
management software.
Parameters
− An alpha-numeric
string of up to 32 characters that will be
used to authenticate management stations
that want to access the switch’s SNMP
agent.
readonly − Allows the user using the above
community string to have read only access
to the switch’s SNMP agent. The default
read only community string is public.
readwrite − Allows the user using the above
community string to have read and write
access to the switch’s SNMP agent. The
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60
config snmp community
default read write community string is
private.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To configure an SNMP community “System”:
local>config snmp community System readwrite
Command: config snmp community System readwrite
Success.
Local>
config snmp trap_receiver
Purpose
Used to configure an SNMP trap receiver.
Syntax
config snmp trap_receiver
Description
This command is used to configure an
SNMP trap receiver on the switch that will
be used to authenticate management
stations that want to access the switch
using SNMP management software.
Parameters
−
The
IP
address
of
the
management station that is currently
specified to receive traps from the switch’s
SNMP agent. This management station will
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61
config snmp trap_receiver
be deleted from the list of up to three that
can be entered using the create SNMP
trap_receiver commmand above.
− An alpha-numeric
string of up to 32 characters that will be
used to authenticate management stations
that want to access the switch’s SNMP
agent.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To configure an SNMP trap receiver “mink” with an IP
address of 10.1.1.2:
Local>config snmp trap_receiver 10.1.1.2 mink
Command: config snmp trap_receiver 10.1.1.2 mink
Success.
local>
config snmp system_name
Purpose
Used to configure a name for the switch.
Syntax
config snmp system_name
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62
config snmp system_name
Description
This command is used to give the switch an
alpha-numeric
name
of
up
to
128
characters.
Parameters
− An alpha-numeric name for
the switch of up to 128 characters.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To configure the switch name for “DES-3250”:
local>config snmp system_name DES3250
Command: config snmp system_name DES3250
Success.
local>
config snmp system_location
Purpose
Used to enter a description of the location
of the switch.
Syntax
config
snmp
system_location
Description
This
command
is
used
to
enter
a
description of the location of the switch. A
maximum of 128 characters can be used.
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63
config snmp system_location
Parameters
− A description of the
location of the switch. A maximum of 128
characters can be used.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To configure the switch location for “Taiwan”:
.
local>config snmp system_location Taiwan
Command: config snmp system_location Taiwan
Success.
local>
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
Description
This 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 128 characters can
be used.
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64
config snmp system_contact
Parameters
−
A
maximum
of
128
characters used to identify a contact
person who is responsible for the switch.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To configure the switch contact to “ctsnow”:
.
local>config snmp system_contact ctsnow
Command: config snmp system_contact ctsnow
Success.
local>
enable rmon
Purpose
Used to enable RMON on the switch.
Syntax
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.
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65
enable rmon
Parameters
none.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To enable RMON:
local>enable rmon
Command: enable rmon
Success.
local>
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
none.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
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66
To disable RMON:
local>disable rmon
Command: disable rmon
Success.
local>
show snmp
Purpose
Used to display the SNMP configuration
entered on the switch.
Syntax
show snmp
[community_string/trap_receiver]
Description
This command will display the current
SNMP configuration on the switch.
Parameters
community_string − Displays all of the
community
strings
configured
on
the
switch. A community string is an alpha-
numeric string of up to 32 characters used
to
authenticate
management
stations
wanting access to the switch’s SNMP agent.
trap_receiver
−
Displays
all
of
the
trap_receiver IP addresses configured on
the switch. A trap receiver is a host on the
same subnet as the switch that can receive
SNMP trap messages.
Restrictions
none.
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67
Example Usage:
To display SNMP configurations:
local>show snmp
Command: show snmp
System Name : DES3250
System Location : Taiwan
System Contact : dlink
SNMP Trap : Enabled
Authenticate Traps : Enabled
Community String Rights
-------------------------------------------- ---------------
System Read/Write
public Read-Only
Develop Read-Only
private Read/Write
Total Entries: 4
IP Address Community String
--------------- ------------------------------------------------------------
10.1.1.1 Develop
Total Entries: 1
local>
create trusted_host
Purpose
Used to create trusted hosts.
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68
create trusted_host
Syntax
create trusted_host
Description
This command is used to create trusted
hosts. A trusted host is a recipient of
SNMP,
Web,
and
Telnet
messages
generated by the switch’s SNMP agent.
Parameters
− The IP address of the trusted
host.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To create a trusted host:
local>create trusted_host
Command: create trusted_host 10.1.1.1
Success.
local>
show trusted_host
Purpose
Used to display a list of trusted hosts
entered on the switch using the create
trusted_host command above.
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69
show trusted_host
Syntax
show trusted_host
Description
This command is used to display a list of
trusted hosts entered on the switch using
the create trusted_host command above.
Parameters
none.
Restrictions
none.
Example Usage:
To display the list of trusted hosts:
local>show trusted_host
Command: show trusted_host
Management Stations
IP Address:
-------------------------
10.1.1.1
Total Entries: 1
local>
delete trusted_host
Purpose
Used to delete a trusted host entry made
using the create trusted_host command
above.
Syntax
delete trusted _host
Description
This command is used to delete a trusted
host
entry
made
using
the
create
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70
delete trusted_host
trusted_host command above.
Parameters
− The IP address of the trusted
host.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To delete a trusted host with an IP address
10.48.74.121:
local>delete trusted_host 10.48.74.121
Command: delete trusted_host 10.48.74.121
Success.
local>
enable snmp traps
Purpose
Used to enable SNMP trap support.
Syntax
enable snmp traps
Description
This command is used to enable SNMP trap
support on the switch.
Parameters
none.
Restrictions
Only administrator-level users can issue
this command
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71
enable snmp traps
this command.
Example Usage:
To turn on SNMP trap support:
local>enable snmp traps
Command: enable snmp traps
Success.
local>
disable snmp traps
Purpose
Used to disable SNMP trap support on the
switch.
Syntax
enable snmp traps
Description
This command is used to disable SNMP
trap support on the switch.
Parameters
none.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
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72
To prevent SNMP traps from being sent from the switch:
local>disable snmp traps
Command: disable snmp traps
Success.
local>
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
none.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To turn on SNMP authentication trap support:
local>enable snmp authenticate traps
Command: enable snmp authenticate traps
Success.
local>
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73
disable snmp authenticate traps
Purpose
Used to disable SNMP authentication trap
support.
Syntax
disable snmp authenticate traps
Description
This command is used to disable SNMP
authentication support on the switch.
Parameters
none.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To turn off SNMP authentication trap support:
local>disable snmp authenticate traps
Command: disable snmp authenticate traps
Success.
local>
ping
Purpose
Used to test the connectivity between
network devices.
Syntax
ping {times } {timeout
}
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74
ping
}
Description
This 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.
Parameters
− The IP address of the remote
device.
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.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To send ICMP echo message to “10.48.74.121” for 4
times:
local>#ping 10.48.74.121 times 4
Command: ping 10.48.74.121
Reply from 10.48.74.121, time<10ms
Reply from 10.48.74.121, time<10ms
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Reply from 10.48.74.121, time<10ms
Reply from 10.48.74.121, time<10ms
Ping Statistics for 10.48.74.121
Packets: Sent =4, Received =4, Lost =0
local>
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7
DOWNLOAD/UPLOAD
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
configuration
{increment}
upload
configuration
log
Each command is listed, in detail, in the following sections.
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download
Purpose
Used to download and install new firmware
or a switch configuration file from a TFTP
server.
Syntax
download [ firmware
/configuration
{increment}]
Description
This command is used to download a new
firmware or a switch configuration file from
a TFTP server.
Parameters
firmware − Download and install new
firmware on the switch from a TFTP server.
configuration
−
Download
a
switch
configuration file from a TFTP server.
− The IP address of the TFTP
server.
− The DOS path and
filename
of
the
firmware
or
switch
configuration file on the TFTP server. For
example, C:\3250.had.
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-
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download
level users can issue this command.
Example Usage:
local>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.
local>
upload
Purpose
Used to upload the current switch settings
or the switch history log to a TFTP server.
Syntax
upload [configuration/log]
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.
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79
upload
− The IP address of the TFTP
server. The TFTP server must be on the
same IP subnet as the switch.
− 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:
local>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.
local>
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8
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
Parameters
show packet ports
show error ports
show utilitzation
clear counters
ports
clear log
show log
index
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
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show packet ports
sent and received by the switch.
Syntax
show packet ports
Description
This command is used to display statistics
about packets sent and received by ports
specified in the port list.
Parameters
− Specifies a range of ports to be
configured. The port list is specified by
listing the beginning port number and the
highest port number of the range. The
beginning and end of the port list range are
separated by a dash. For example, 3 would
specify port 3. 4 specifies port 4. 3-4
specifies all of the ports between port 3 and
port 4 − in numerical order.
Restrictions
none.
Example Usage:
To display the packets analysis for port 7:
local>show packet ports 7
Port number : 7
Frame Size Frame Counts Frames/sec Frame Type Total
Total/sec
------------ ------------ ---------- ---------- ------- ---------
64 3275 10 RX Bytes 408973 1657
65-127 755 10 RX Frames 4395 19
128-255 316 1
256-511 145 0 TX Bytes 7918 178
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512-1023 15 0 TX Frames 111 2
1024-1518 0 0
Unicast RX 152 1
Multicast RX 557 2
Broadcast RX 3686 16
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show error ports
Purpose
Used to display the error statistics for a
range of ports.
Syntax
show error ports
Description
This command will display all of the packet
error statistics collected and logged by the
switch for a given port list.
Parameters
− Specifies a range of ports to
be configured. The port list is specified by
listing the beginning port number and the
highest port number of the range. The
beginning and end of the port list range are
separated by a dash. For example, 3 would
specify port 3. 4 specifies port 4. 3-4
specifies all of the ports between port 3 and
port 4 − in numerical order.
Restrictions
none.
Example Usage:
To display the errors of port 3:
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83
Command: show error ports 3
Port number : 3
RX Frames TX Frames
--------------- ----------------
CRC Error
0
Excessive Deferral 0
Undersize
0
CRC Error
0
Oversize
0
Late Collision
0
Fragment
0
Excessive Collision
0
Jabber
0
Single Collision 0
Drop Pkts
0
Collision
0
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show utilization
Purpose
Used to display real-time port utilization
statistics.
Syntax
show utilization
Description
This command will display the real-time
port utilization statistics for the switch.
Parameters
none.
Restrictions
none.
Example Usage:
To display the port utilization statistics:
local>show utilization
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84
Port TX/sec RX/sec Util Port TX/sec RX/sec Util
---- ---------- ---------- ---- ---- ---------- ---------- ----
1 0 0 0 13 0 0 0
2 0 0 0 14 0 0 0
3 0 0 0 15 0 0 0
4 0 0 0 16 0 0 0
5 0 0 0 17 19 49 1
6 0 0 0 18 0 0 0
7 0 0 0 19 0 0 0
8 0 0 0 20 0 0 0
9 0 0 0 21 0 0 0
10 0 0 0 22 0 0 0
11 0 0 0 23 0 0 0
12 0 0 0 24 0 30 1
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clear counters
Purpose
Used
to
clear
the
switch’s
statistics
counters.
Syntax
clear counters {ports }
Description
This command will clear the counters used
by the switch to compile statistics.
Parameters
− Specifies a range of ports to
be configured. The port list is specified by
listing the beginning port number and the
highest port number of the range. The
beginning and end of the port list range are
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85
clear counters
separated by a dash. For example, 3 would
specify port 3. 4 specifies port 4. 3-4
specifies all of the ports between port 3 and
port 4 − in numerical order..
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To clear the counters:
local>clear counters ports 7-9
Command: clear counters ports 7-9
Success.
local>
clear log
Purpose
Used to clear the switch’s history log.
Syntax
clear log
Description
This command will clear the switch’s
history log.
Parameters
none.
Restrictions
Only administrator-level users can issue
this command.
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86
Example Usage:
To clear the log information:
local>clear log
Command: clear log
Success.
local>
show log
Purpose
Used to display the switch history log.
Syntax
show log {index }
Description
This command will display the contents of
the switch’s history log.
Parameters
index − The show log command
will display the history log until the log
number reaches this value.
Restrictions
none.
Example Usage:
To display the switch history log:
local>show log
Index Time Log Text
----- ---------- ---------------------------------------------------------------
4 000d00h50m Successful login through Console (Username:
Anonymous)
3 000d00h50m Logout through Console (Username:
DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
87
Anonymous)
2 000d00h49m Successful login through Console (Username:
Anonymous)
1
000d00h49m Logout through Console (Username:
Anonymous)
local>
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9
SPANNING TREE
COMMANDS
The spanning tree commands in the Command Line Interface
(CLI) are listed (along with the appropriate parameters) in the
following table.
Command
Parameters
config stp
ports
cost
priority
state [enabled/disabled]
maxage
hellotime
forwarddelay
priority
fbpdu [enabled/disabled]
enable stp
disable stp
show stp
show stp ports
Each command is listed, in detail, in the following sections.
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config stp
Purpose
Used to set up STP on the switch.
Syntax
config stp {ports {cost /priority /state
[enabled/disabled]} {maxage /hellotime /forwarddelay /priority
/fbpdu
[enabled/disabled]}
Description
This command is used to set up the
Spanning Tree Protocol (STP) for the entire
switch.
Parameters
ports − Specifies a range of ports
to be configured. Ports are specified by
entering the lowest port number in a group,
and then the highest port number in a
group, separated by a dash. So, a port
group including the switch ports 1, 2, and
3 would be entered as 1-3. Ports that are
not contained within a group are specified
by entering their port number, separated
by a comma. So, the port group 1-3 and
port 49 would be entered as 1-3, 49.
Additional ports can be individually entered
by
their
port
number,
separated
by
commas. If you enter the ports sub-
command, you can enter the port STP cost,
priority, and state sub-commands listed
below.
cost − This defines a
metric that indicates the relative cost of
forwarding packets to the specified port
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90
config stp
list. The default cost for a 1000 Mbps
port is 4, a 100 Mbps port is 19, and for
a 10 Mbps port the default cost is 100.
priority − A numeric
value between 0 and 255 that is used in
determining the root and designated
port in an STP port list. The default is
128, with 0 indicating the highest
priority.
state [enabled/disabled] − Allows STP to
be enabled or disabled for the ports
specified in the port list. The default is
disabled.
maxage − The maximum
amount of time (in seconds) that the switch
will wait to receive a BPDU packet before
reconfiguring STP. The default is 20
seconds.
hellotime − The time interval
between
transmission
of
configuration
messages by the root device. The default is
2 seconds.
forwarddelay − The maximum
amount of time (in seconds) that the root
device will wait before changing states. The
default is 15 seconds.
priority − A numerical
value between 0 and 65535 that is used in
determining the root device, root port, and
designated port. The device with the
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91
config stp
highest priority becomes the root device.
The lower the numerical value, the higher
the priority. The default is 32,768.
fbpdu [enabled/disabled] − Allows the
forwarding of STP BPDU packets from
other network devices when STP is disabled
on the switch. The default is enabled.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To set maxage to 18 and hellotime to 4:
local>config stp maxage 18 hellotime 4
Command: config stp maxage 18 hellotime 4
Success.
local>
enable stp
Purpose
Used to globally enable STP on the switch.
Syntax
enable stp
Description
This command allows the Spanning Tree
Protocol to be globally enabled on the
switch.
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92
enable stp
Parameters
none.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To enable STP on the switch:
local>enable stp
Command: enable stp
Success.
local>
disable stp
Purpose
Used to globally disable STP on the switch.
Syntax
disable stp
Description
This command allows the Spanning Tree
Protocol to be globally disabled on the
switch.
Parameters
none.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
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93
To disable STP on the switch:
local>disable stp
Command: disable stp
Success.
local>
show stp
Purpose
Used to display the switch’s current STP
configuration.
Syntax
show stp
Description
This
command
displays
the
switch’s
current STP configuration.
Parameters
none
Restrictions
none.
Example Usage:
Status 1: STP enabled:
local>show stp
Command: show stp
STP Status : Enabled
Max Age : 18
Hello Time : 4
Forward Delay : 15
Priority : 32768
Forwarding BPDU : Enabled
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94
Designated Root Bridge : 00-00-00-12-00-00
Root Priority : 32768
Cost to Root : 19
Root Port : 33
Last Topology Change : 13sec
Topology Changes Count: 0
Status 2: STP Disabled
local>show stp
Command: show stp
STP Status : Disabled
Max Age : 18
Hello Time : 4
Forward Delay : 15
Priority : 32768
Forwarding BPDU : Enabled
local>
show stp ports
Purpose
Used to display the switch’s current per-
port group STP configuration.
Syntax
show stp ports
Description
This
command
displays
the
switch’s
current per-port group STP configuration.
Parameters
− Specifies a range of ports to be
configured. The port list is specified by
listing the beginning port number and the
highest port number of the range. The
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95
show stp ports
beginning and end of the port list range are
separated by a dash. For example, 3 would
specify port 3. 4 specifies port 4. 3-4
specifies all of the ports between port 3 and
port 4 − in numerical order.
Restrictions
None
Example Usage:
To display STP state of port 1-9:
local>show stp ports 1-9
Port Connection State Cost Priority Status
---- ---------------- ----------- ----- ---------- ---------------
1 Link Down Enabled 19 128 Forwarding
2 Link Down Enabled 19 128 Forwarding
3 Link Down Enabled 19 128 Forwarding
4 Link Down Enabled 19 128 Forwarding
5 Link Down Enabled 19 128 Forwarding
6 Link Down Enabled 19 128 Forwarding
7 Link Down Enabled 19 128 Forwarding
8 Link Down Enabled 19 128 Forwarding
9 Link Down Enabled 19 128 Forwarding
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10
LAYER 2 FORWARDING
DATABASE COMMANDS
The layer 2 forwarding database commands in the Command
Line Interface (CLI) are listed (along with the appropriate
parameters) in the following table.
Command
Parameters
create fdb
port
create
multicast_fdb
config
multicast_fdb
[add/delete]
delete fdb
[add/delete]
clear fdb
vlan
port /all
show
multicast_fdb
vlan
mac_address
config fdb
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97
Command
Parameters
aging_time
show fdb
port
vlan
mac_address
static
aging_time
create fdbfilter
[src/dst/either]
delete fdbfilter
show fdbfilter
{}
Each command is listed, in detail, in the following sections.
create fdb
Purpose
Used to create a static entry to the unicast
MAC address forwarding table (database)
Syntax
create fdb
[port ]
Description
This command will make an entry into the
switch’s unicast MAC address forwarding
database.
Parameters
− The name of the VLAN
on which the MAC address resides.
− The MAC address that will be
added to the forwarding table.
− The port number corresponding to
the MAC destination address. The switch
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create fdb
will always forward traffic to the specified
device through this port.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To create an unicast MAC forwarding:
local>create fdb default 00-00-00-00-01-02 port 5
Command: create fdb default 00-00-00-00-01-02 port 5
Success.
create multicast_fdb
Purpose
Used to create a static entry to the
multicast MAC address forwarding table
(database)
Syntax
create multicast_fdb
Description
This command will make an entry into the
switch’s multicast MAC address forwarding
database.
Parameters
− The name of the VLAN
on which the MAC address resides.
− The MAC address that will be
added to the forwarding table.
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create multicast_fdb
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To create multicast MAC forwarding:
local>create multicast_fdb default 01-00-5E-00-00-00
Command: create multicast_fdb default 01-00-5E-00-00-
00
Success.
local>
config multicast_fdb
Purpose
Used to configure the switch’s multicast
MAC address forwarding database.
Syntax
config multicast_fdb
[add/delete]
[egress/forbidden]
Description
This command configures the multicast
MAC address forwarding table.
Parameters
− The name of the VLAN
on which the MAC address resides.
− The MAC address that will be
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100
config multicast_fdb
added to the forwarding table.
[add/delete] − Add will add the MAC
address to the forwarding table, delete will
remove
the
MAC
address
from
the
forwarding table.
[egress/forbidden] − Egress specifies the
port as being a source of multicast packets
originating from the MAC address specified
above, forbidden specifies the port as not
being a member of the VLAN and that the
port is forbidden from becoming a member
of the VLAN dynamically.
− Specifies a range of ports to be
configured. The port list is specified by
listing the beginning port number and the
highest port number of the range. The
beginning and end of the port list range are
separated by a dash. For example, 3 would
specify port 3. 4 specifies port 4. 3-4
specifies all of the ports between port 3 and
port 4 − in numerical order.
Restrictions
Only administrator-level users can issue
this command.
Example Usage:
To add multicast MAC forwarding:
local>config multicast_fdb default 01-00-5E-00-00-00 add 1-5
Command: config multicast_fdb default 01-00-5E-00-00-00 add 1-