Administrator Guide

Port Monitoring
The port monitoring feature allows you to monitor network traffic by forwarding a copy of each incoming or outgoing packet
from one port to another port.
Important Points to Remember
● Port monitoring is supported on physical ports and logical interfaces, such as port channels and virtual local area networks
(VLANs).
● The monitoring (destination, “MG”) and monitored (source, “MD”) ports must be on the same switch.
● In general, a monitoring port should have no ip address and no shutdown as the only configuration; Dell Networking
OS permits a limited set of commands for monitoring ports; display them using the ? command. A monitoring port also may
not be a member of a VLAN.
● A total of 4 MG may be configured in a single port-pipe.
● MG and MD ports can be reside anywhere across a port-pipe.
● The Dell Networking OS supports multiple source ports to be monitored by a single destination port in one monitor session.
● One monitor session can have only one MG port.
● PE Gigabit Ethernet (peGigE) ports can be added as source ports only. You cannot add cascade ports as destination ports.
NOTE: The monitoring port should not be a part of any other configuration.
Topics:
• description
• erpm
• monitor session
• show config
• show monitor session
• show running-config monitor session
• source (port monitoring)
description
Enter a description of this monitoring session.
C9000 Series
Syntax
description {description}
To remove the description, use the no description {description} command.
Parameters
description Enter a description regarding this session (80 characters maximum).
Defaults none
Command Modes CONFIGURATION
Command
History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
47
1390 Port Monitoring