Creating An Rspan Destination Session And Configuring Incoming Traffic - Cisco Catalyst 2975 Software Configuration Manual

Chapter 27 Configuring SPAN and RSPAN
Command
Step 7
monitor session session_number
destination interface interface-id
Step 8 end
Step 9 show monitor [session session_number]
show running-config
Step 10
copy running-config startup-config
To delete a SPAN session, use the no monitor session session_number global configuration command.
To remove a destination port from the SPAN session, use the no monitor session session_number
destination interface interface-id global configuration command. To remove the RSPAN VLAN from
the session, use the no monitor session session_number source remote vlan vlan-id.
This example shows how to configure VLAN 901 as the source remote VLAN and port 1 as the
destination interface:
Switch(config)# monitor session 1 source remote vlan 901
Switch(config)# monitor session 1 destination interface gigabitethernet2/0/1
Switch(config)# end

Creating an RSPAN Destination Session and Configuring Incoming Traffic

Beginning in privileged EXEC mode, follow these steps to create an RSPAN destination session, to
specify the source RSPAN VLAN and the destination port, and to enable incoming traffic on the
destination port for a network security device (such as a Cisco IDS Sensor Appliance).
For details about the keywords not related to incoming traffic, see the
Session" section on page
been configured.
Command
Step 1 configure terminal
Step 2 no monitor session
{session_number | all | local |
remote}
Step 3 monitor session session_number
source remote vlan vlan-id
OL-19720-02
Purpose
Specify the RSPAN session and the destination interface.
For session_number, enter the number defined in Step 6.
In an RSPAN destination session, you must use the same session
number for the source RSPAN VLAN and the destination port.
For interface-id, specify the destination interface. The destination
interface must be a physical interface.
Though visible in the command-line help string, encapsulation
replicate is not supported for RSPAN. The original VLAN ID is
overwritten by the RSPAN VLAN ID, and all packets appear on the
destination port as untagged.
Return to privileged EXEC mode.
Verify the configuration.
(Optional) Save the configuration in the configuration file.
27-20. This procedure assumes that the RSPAN VLAN has already
Purpose
Enter global configuration mode.
Remove any existing SPAN configuration for the session.
Specify the RSPAN session and the source RSPAN VLAN.
For session_number, the range is 1 to 66.
For vlan-id, specify the source RSPAN VLAN to monitor.
Catalyst 2975 Switch Software Configuration Guide
Configuring SPAN and RSPAN
"Creating an RSPAN Destination
27-21