Cisco Systems 4500 Specifying VLANs to Monitor

51-22
Software Configuration Guide—Release 15.0(2)SG
OL-23818-01
Chapter 51 Configuring SPAN and RSPAN
Configuring RSPAN
This example shows how to remove port 1 as an RSPAN source for RSPAN session 1:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# no monitor session 1 source interface gigabitEthernet1/1
Switch(config)# end
This example shows how to disable received traffic monitoring on port 1, which was configured for
bidirectional monitoring:
Switch(config)# no monitor session 1 source interface gigabitEthernet1/1 rx
The monitoring of traffic received on port 1 is disabled, but traffic transmitted from this port continues
to be monitored.
Specifying VLANs to Monitor
VLAN monitoring is similar to port monitoring. To specify VLANs to monitor, perform this task:
Command Purpose
Step 1 Switch# configure terminal Enters global configuration mode.
Step 2 Switch(config)# no monitor session
{session_number | all | local |
remote}
Clears any existing SPAN configuration for the session.
For session_number, specifies the session number identified with this
RSPAN session (1 through 6).
Specify all to remove all SPAN sessions, local to remove all local
sessions, or remote to remove all remote SPAN sessions.
Step 3 Switch(config)# [no] monitor session
{session_number} {source {interface
interface_list | {vlan vlan_IDs | cpu
[queue queue_ids]} [rx | tx | both]
Specifies the RSPAN session and the source VLANs (monitored
VLANs). You can monitor only received (rx) traffic on VLANs.
For session_number, specifies the session number identified with this
RSPAN session (1 through 6).
For interface-list, specifies the source port to no longer monitor. Valid
interfaces include physical interfaces and port-channel logical
interfaces (port-channel port-channel-number).
For vlan-IDs, the range is 1 to 4094; do not enter leading zeros.
For queue_ids, specifies the source queue.
(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 transmitted
(Tx) and received (Rx) traffic. Only received traffic can be monitored
on additional source ports.
• Rx—Monitor received traffic.
• Tx—Monitor transmitted traffic.
• both—Monitor both received and transmitted traffic
(bidirectional).