39-18
Software Configuration Guide—Release 12.2(25)EW
OL-6696-01
Chapter 39 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.
Switch(config)# no monitor session 1
Switch(config)# monitor session 1 source interface fastEthernet3/10 tx
Switch(config)# monitor session 1 source interface fastEthernet3/2 rx
Switch(config)# monitor session 1 source interface fastEthernet3/3 rx
Switch(config)# monitor session 1 source interface port-channel 102 rx
Switch(config)# monitor session 1 destination remote vlan 901
Switch(config)# end
Creating an RSPAN Destination Session
To create an RSPAN destination session and to specify the source RSPAN VLAN and the destination
port, perform this task:
Step 5
Switch(config)# end
Returns to privileged EXEC mode.
Step 6
Switch# show monitor [session
session_number
]
Verifies your entries.
Step 7
Switch# copy running-config
startup-config
(Optional) Saves your entries in the configuration file.
Command Purpose
Command Purpose
Step 1
Switch# configure terminal
Enters global configuration mode.
Step 2
Switch(config)# monitor session
session_number
source
remote vlan
vlan-ID
Specifies the RSPAN session and the source RSPAN VLAN.
For session_number, specifies the session number identified with this
RSPAN session (1 through 6).
For vlan-ID, specifies the source RSPAN VLAN to monitor.
Step 3
Switch(config)# [no] monitor session
<
session_number
> destination interface
<
interface
> [encapsulation {isl |
dot1q}] [ingress [vlan
vlan_IDs
]
[learning]]
Specifies the RSPAN session and the destination interface.
For session_number, specifies the session number identified with this
RSPAN session (1 through 6).
For interface, specifies the destination interface.
For vlan_IDs, specifies the ingress VLAN, if necessary.
(Optional) [, | -] Specifies a series or range of interfaces. Enter a
space after the comma; enter a space before and after the hyphen.
(Optional) Specifies the direction of traffic to monitor. If you do not
specify a traffic direction, the source interface sends both sent and
received traffic. Only received (rx) traffic can be monitored on
additional source ports.
• isl—Use ISL encapsulation.
• dot1q—Use 802.1Q encapsulation.
Step 4
Switch(config)# end
Returns to privileged EXEC mode.
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