Cisco Catalyst 3750 Software Configuration Manual page 395

Chapter 21 Configuring SPAN and RSPAN
Creating a Local SPAN Session
Beginning in privileged EXEC mode, follow these steps to create a SPAN session and specify the source
(monitored) ports or VLANs and the destination (monitoring) ports:
Command
Step 1
configure terminal
Step 2 no monitor session {session_number | all |
local | remote}
Step 3
monitor session session_number source
{interface interface-id | vlan vlan-id} [, | -]
[both | rx | tx]
78-15870-01
Purpose
Enter global configuration mode.
Remove any existing SPAN configuration for the session.
For session_number, the range is from 1 to 66.
Specify all to remove all SPAN sessions, local to remove all local
sessions, or remote to remove all remote SPAN sessions.
Specify the SPAN session and the source port (monitored port).
For session_number, the range is from 1 to 66.
For interface-id, specify the source port or source VLAN to monitor.
For source 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 12.
• For vlan-id, specify the source VLAN to monitor. The range is 1
to 4094 (excluding the RSPAN VLAN).
Note A single session can include multiple sources (ports or
VLANs), defined 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
specify a traffic direction, the SPAN monitors both sent and received
traffic.
• both—Monitor both received and sent traffic. This is the default.
• rx—Monitor received traffic.
• tx—Monitor sent traffic.
Note You can use the monitor session session_number source
command multiple times to configure multiple source ports.
Catalyst 3750 Metro Switch Software Configuration Guide
Configuring SPAN and RSPAN
21-11