Cisco Systems 2950 Creating an RSPAN Destination Session

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Catalyst2950 Desktop Switch Software Configuration Guide

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Chapter20 Configuring SPAN and RSPAN

Configuring RSPAN

This example shows how to clear any existing RSPAN configuration for session 1, configure RSPAN

session 1 to monitor multiple source interfaces, and configure the destination RSPAN VLAN and the

reflector-port.

Switch(config)# no monitor session 1

Switch(config)# monitor session 1 source interface fastEthernet0/10 tx

Switch(config)# monitor session 1 source interface fastEthernet0/2 rx

Switch(config)# monitor session 1 source interface fastEthernet0/3 rx

Switch(config)# monitor session 1 source interface port-channel 102 rx

Switch(config)# monitor session 1 destination remote vlan 901 reflector-port

fastEthernet0/1

Switch(config)# end

Creating an RSPAN Destination Session

Beginning in privileged EXEC mode, follow these steps to create an RSPAN destination session an d to

specify the source RSPAN VLAN and the destination port:

Step4 monitor session session_number

destination remote vlan vlan-id

reflector-port interface

Specify the RSPAN session, the destination remote VLAN, and the

reflector port.

For session_number, enter the session number identified with this

RSPAN session.

For vlan-id, specify the RSPAN VLAN to carry the monitored traffic

to the destination port.

For interface, specify the interface that will flood the RSPAN traf fic

onto the RSPAN VLAN.

Step5 end Return to privileged EXEC mode.

Step6 show monitor [session session_number] Verify your entries.

Step7 copy running-config startup-config (Optional) Save your entries in the configuration file.

Command Purpose

Step1 configure terminal Enter global configuration mode.

Step2 monitor session session_number source

remote vlan vlan-id Specify the RSPAN session and the source RSPAN VLAN.

For session_number, specify the session number identified with this

RSPAN session.

For vlan-id, specify the source RSPAN VLAN to monitor.

Step3 monitor session session_number

destination interface interface-id

[encapsulation {dot1q}]

Specify the RSPAN session and the destination interface.

For session_number, specify the session number identified with this

RSPAN session.

For interface-id, specify the destination interface.

(Optional) Specify the encapsulation header for outgoing packets. If

not specified, packets are sent in native form.

•dot1q—Use 802.1Q encapsulation.

Step4 end Return to privileged EXEC mode.