Specifying Vlans To Filter - Cisco Catalyst 3750-X Software Configuration Manual

Configuring SPAN and RSPAN
Command
show monitor [session session_number]
Step 6
show running-config
Step 7 copy running-config startup-config
To delete a SPAN session, use the no monitor session session_number global configuration command.
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 gigabitethernet1/0/1 tx
Switch(config)# monitor session 1 source interface gigabitethernet1/0/2 rx
Switch(config)# monitor session 1 source interface port-channel 2
Switch(config)# monitor session 1 destination remote vlan 901
Switch(config)# end

Specifying VLANs to Filter

Beginning in privileged EXEC mode, follow these steps to configure the RSPAN source session to limit
RSPAN source traffic to specific VLANs:
Command
Step 1 configure terminal
no monitor session {session_number | all |
Step 2
local | remote}
Step 3
monitor session session_number source
interface interface-id
Step 4
monitor session session_number filter vlan
vlan-id [, | -]
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
32-20
Purpose
Verify the configuration.
(Optional) Save the configuration in the configuration file.
Purpose
Enter global configuration mode.
Remove any existing SPAN configuration for the session.
For session_number, the range is 1 to 66.
Specify all to remove all SPAN sessions, local to remove all local
sessions, or remote to remove all remote SPAN sessions.
Specify the characteristics of the source port (monitored port) and
SPAN session.
For session_number, the range is 1 to 66.
For interface-id, specify the source port to monitor. The interface
specified must already be configured as a trunk port.
Limit the SPAN source traffic to specific VLANs.
For session_number, enter the session number specified in step 3.
For vlan-id, the range is 1 to 4094.
(Optional) Use a comma (,) to specify a series of VLANs or use a
hyphen (-) to specify a range of V LANs. Enter a space before and after
the comma; enter a space before and after the hyphen.
Chapter 32 Configuring SPAN and RSPAN
OL-21521-01