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Chapter 24
Configuring SPAN and RSPAN
Configuring a VLAN as an RSPAN VLAN
Create a new VLAN to be the RSPAN VLAN for the RSPAN session. You must create the RSPAN VLAN
in all switches that will participate in RSPAN. You must configure RSPAN VLAN on source and
destination switches and any intermediate switches.
To get an efficient flow of RSPAN traffic, manually delete the RSPAN VLAN from all trunks that do not
need to carry the RSPAN traffic.
Beginning in privileged EXEC mode, follow these steps to create an RSPAN VLAN:
Command
Step 1
configure terminal
Step 2
vlan vlan-id
Step 3
remote-span
Step 4
end
Step 5
copy running-config startup-config
To remove the remote SPAN characteristic from a VLAN and convert it back to a UNI isolated VLAN,
use the no remote-span VLAN configuration command.
This example shows how to create RSPAN VLAN 901.
Switch(config)# vlan 901
Switch(config-vlan)# remote span
Switch(config-vlan)# end
Creating an RSPAN Source Session
Beginning in privileged EXEC mode, follow these steps to start an RSPAN source session and to specify
the monitored source and the destination RSPAN VLAN:
Command
Step 1
configure terminal
Step 2
no monitor session {session_number | all |
local | remote}
78-17058-01
Purpose
Enter global configuration mode.
Enter a VLAN ID to create a VLAN, or enter the VLAN ID of an
existing VLAN, and enter VLAN configuration mode. The range is
2 to 1001 and 1006 to 4094.
The RSPAN VLAN cannot be VLAN 1 (the default VLAN)
Note
or VLAN IDs 1002 through 1005 (reserved for Token Ring
and FDDI VLANs).
If you enter the VLAN ID of a UNI community VLAN, you
must remove the community VLAN type by entering the no
uni-vlan VLAN configuration command.
Configure the VLAN as an RSPAN VLAN.
Return to privileged EXEC mode.
(Optional) Save the configuration in the configuration file.
Purpose
Enter global configuration mode.
Remove any existing RSPAN configuration for the session.
For session_number, the range is 1 to 66.
Specify all to remove all RSPAN sessions, local to remove all local
sessions, or remote to remove all remote SPAN sessions.
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
Configuring SPAN and RSPAN
24-17
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