Reference Guide

Configuring Port Monitoring
To configure port monitoring, use the following commands.
1. Verify that the intended monitoring port has no configuration other than no shutdown, as shown in the following example.
EXEC Privilege mode
show interface
2. Create a monitoring session, as shown in the following example.
CONFIGURATION mode
monitor session
3. Specify the source and destination port and direction of traffic, as shown in the following example.
MONITOR SESSION mode
source
To display monitor sessions, use the show monitor session command in EXEC Privilege mode.
Dell(conf-if-te-1/2)#show config
!
interface TengigabitEthernet 1/2
no ip address
no shutdown
Dell(conf-if-te-1/2)#exit
Dell(conf)#monitor session 0
Dell(conf-mon-sess-0)#source tengig 1/1 dest tengig 1/2 direction rx
Dell(conf-mon-sess-0)#exit
Dell(conf)#do show monitor session 0
SessionID Source Destination Direction Mode Type
--------- ------ ----------- --------- ---- ----
0 Te 1/1 Te 1/2 rx interface Port-based
Dell(conf)#
In the example below, the host and server are exchanging traffic which passes through interface tengigabitethernet 1/ 1.
Interface tengigabitethernet 1/1 is the monitored port and tengigabitethernet 1/2 is the monitoring port, which is configured to
only monitor traffic received on tengigabitethernet 1/1 (host-originated traffic).
Figure 97. Port Monitoring Example
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Port Monitoring