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Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
OL-10101-02
Chapter 24 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 and to
specify the source RSPAN VLAN and the destination port:
This example shows how to configure VLAN 901 as the source remote VLAN and port 5 as the
destination interface:
Switch(config)# monitor session 1 source remote vlan 901
Switch(config)# monitor session 1 destination interface fastethernet0/5
Switch(config)# end
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
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.
Step 3
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 IEEE 802.1Q encapsulation.
Step 4
end Return to privileged EXEC mode.
Step 5
show monitor [session session_number] Verify your entries.
Step 6
copy running-config startup-config (Optional) Save your entries in the configuration file.