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Catalyst 3750 MetroSwitch Software Configuration Guide
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Chapter 21 Configuring SPAN and RSPAN
Configuring SPAN and RSPAN
To remove a source port or VLAN from the SPAN session, use the no monitor session session_number
source {interface interface-id | vlan vlan-id} global configuration command. To remove the RSPAN
VLAN from the session, use the no monitor session session_number destination remote vlan vlan-id.
This example shows how to remove any existing RSPAN configuration for session 1, configure RSPAN
session 1 to monitor multiple source interfaces, and configure the destination as RSPAN VLAN 901.
Switch(config)# no monitor session 1
Switch(config)# monitor session 1 source interface fastethernet1/0/10 tx
Switch(config)# monitor session 1 source interface gigabitethernet1/0/1 rx
Switch(config)# monitor session 1 source interface gigabitethernet1/0/2
Switch(config)# monitor session 1 source interface port-channel 12
Switch(config)# monitor session 1 destination remote vlan 901
Switch(config)# end
Creating an RSPAN Destination Session
You configure the RSPAN destination session on a different switch; that is, not the switch on which the
source session was configured.
Beginning in privileged EXEC mode, follow these steps to define the RSPAN VLAN on that switch, to
create an RSPAN destination session, and to specify the source RSPAN VLAN and the destination port:
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
vlan vlan-id Enter the VLAN ID of the RSPAN VLAN created from the source
switch, and enter VLAN configuration mode.
Note If both switches are participating in VTP and the RSPAN
VLAN ID is from 2 to 1005, Steps 2 through 4 are not
required because the RSPAN VLAN ID is propagated
through the VTP network.
Step 3
remote-span Identify the VLAN as the RSPAN VLAN.
Step 4
exit Return to global configuration mode.
Step 5
no monitor session {session_number | all |
local | remote}
Remove any existing RSPAN configuration for the session.
For session_number, the range is from 1 to 66.
Specify all to remove all RSPAN sessions, local to remove all local
sessions, or remote to remove all remote SPAN sessions.
Step 6
monitor session session_number source
remote vlan vlan-id
Specify the RSPAN session and the source RSPAN VLAN.
For session_number, the range is from 1 to 66.
For vlan-id, specify the source RSPAN VLAN to monitor.
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