Cisco Catalyst 3750-E - Page 746

30-24
Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-08
Chapter 30 Configuring SPAN and RSPAN
Configuring SPAN and RSPAN
Creating an RSPAN Destination Session
You configure the RSPAN destination session on a different switch or switch stack; that is, not the switch
or switch stack on which the source session was configured.
Beginning in privileged EXEC mode, follow these steps to define the RSPAN VLAN on that switch, to
c
reate an RSPAN destination session, and to specify the source RSPAN VLAN and the destination port:
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
vlan vlan-id Enter the VLAN ID of the RSPAN VLAN created from the source
switch, and enter VLAN configuration mode.
If both switches are participating in VTP and the RSPAN VLAN ID
i
s from 2 to 1005, Steps 2 through 4 are not required because the
RSPAN VLAN ID is propagated through the VTP network.
Step 3
remote-span Identify the VLAN as the RSPAN VLAN.
Step 4
exit Return to global configuration mode.
Step 5
no monitor session {session_number | all |
local | remote}
Remove any existing RSPAN configuration for the session.
For s
ession_number, the range is 1 to 66.
Specify al
l to remove all RSPAN sessions, local to remove all local
sessions, or remote to remove all remote SPAN sessions.
Step 6
monitor session session_number source
remote vlan vlan-id
Specify the RSPAN session and the source RSPAN VLAN.
For s
ession_number, the range is 1 to 66. When entering this
command on the Catalyst 3560E-12D switch, you can only enter 1
for the session_number.
For vla
n-id, specify the source RSPAN VLAN to monitor.
Step 7
monitor session session_number
destination interface interface-id
Specify the RSPAN session and the destination interface.
For s
ession_number, enter the number defined in Step 6.
In an RSPAN destination session, you must use the same session
num
ber for the source RSPAN VLAN and the destination port.
For in
terface-id, specify the destination interface. The destination
interface must be a physical interface.
Though visible in the command-line help string, enc
apsulation
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.
Step 8
end Return to privileged EXEC mode.
Step 9
show monitor [session session_number]
show running-config
Verify the configuration.
Step 10
copy running-config startup-config (Optional) Save the configuration in the configuration file.