Cisco Catalyst 4500 Series Command Reference Manual page 520

monitor session
The queue identifier allows sniffing for only traffic that is sent or received on the specified CPU queues.
The queues may be identified either by number or by name. The queue names may contain multiple
numbered queues for convenience.
Examples
This example shows how to configure IP access group 100 on a SPAN session:
Switch# configure terminal
Switch(config)# monitor session 1 filter ip access-group 100
Switch(config)# end
Switch(config)#
This example shows how to add a source interface to a SPAN session:
Switch# configure terminal
Switch(config)# monitor session 1 source interface fa2/3
Switch(config)# end
Switch(config)#
Switch(config)#
Switch(config)#
This example shows how to configure the sources with different directions within a SPAN session:
Switch# configure terminal
Switch(config)# monitor session 1 source interface fa2/3 rx
Switch(config)# monitor session 1 source interface fa2/2 tx
Switch(config)# end
This example shows how to remove a source interface from a SPAN session:
Switch# configure terminal
Switch(config)# no monitor session 1 source interface fa2/3
Switch(config)# end
This example shows how to limit SPAN traffic to VLANs 100 through 304:
Switch# configure terminal
Switch(config)# monitor session 1 filter vlan 100 - 304
Switch(config)# end
This example shows how to configure RSPAN VLAN 20 as the destination:
Switch# configure terminal
Switch(config)# monitor session 2 destination remote vlan 20
Switch(config)# end
This example shows how to use queue names and queue number ranges for the CPU as a SPAN source
on Supervisor Engine 6-E:
Switch# configure terminal
Switch(config)# monitor session 2 source cpu queue control-packet rx
Switch(config)# monitor session 3 source cpu queue 10 rx
Switch(config)# end
control-packet is mapped to queue 10.
Note
Related Commands Command
show monitor
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.3.0SG and IOS 15.1(1)SG)
2-462
Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
Description
Displays information about the SPAN session.
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