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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 32 Configuring SPAN and RSPAN
Configuring SPAN and RSPAN
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 Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
no monitor session {session_number | all |
local | remote}
Remove any existing RSPAN configuration for the session.
For sessi
on_number, the range is 1 to 66.
Specify all to re
move all RSPAN sessions, local to remove all local
sessions, or remote to remove all remote SPAN sessions.
Step 3
monitor session session_number source
{interface interface-id | vlan vlan-id} [, | -]
[both | rx | tx]
Specify the RSPAN session and the source port (monitored port).
For sessi
on_number, the range is 1 to 66.
Enter a source port or source VLAN for t
he RSPAN session:
• For interface-id, specify the source port to monitor. Valid
interfaces include physical interfaces and port-channel logical
interfaces (port-channel port-channel-number). Valid
port-channel numbers are 1 to 48.
• For vlan-id, specify the source VLAN to monitor. The range is 1
to 4094 (excluding the RSPAN VLAN).
A single session can include multiple sources (ports or VLANs),
def
ined in a series of commands, but you cannot combine source
ports and source VLANs in one session.
(Optional) [, | -]
Specify a series or range of interfaces. Enter a space
before and after the comma; enter a space before and after the
hyphen.
(Optional) Specify the direction of traffic to monitor. If you do not
spec
ify a traffic direction, the source interface sends both sent and
received traffic.
• both—Monitor both received and sent traffic.
• rx—Monitor received traffic.
• tx—Monitor sent traffic.
Step 4
monitor session session_number
destination remote vlan vlan-id
Specify the RSPAN session, the destination RSPAN VLAN, and the
destination-port group.
For sessi
on_number, enter the number defined in Step 3.
For vlan-id, speci
fy the source RSPAN VLAN to monitor.
Step 5
end Return to privileged EXEC mode.