Reference Guide

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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.
The commands in this chapter are supported on the S5000.
Important Points to Remember
• Port monitoring is supported on physical ports only. Logical interfaces, such as Port Channels and
virtual local area networks (VLANs), are not supported.
• The Dell Networking OS supports as many monitor sessions on a system as the number of port-pipes.
• 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 monitoring port can monitor any physical port in the chassis.
• Only one MG and one MD may be in a single port-pipe.
• A monitoring port can monitor more than one port.
• More than one monitored port can have the same destination monitoring port.
• Dell Networking OS on the S5000 supports multiple source ports to be monitored by a single
destination port in one monitor session.
• On the S5000, one monitor session can have only one MG port. There is no restriction on the number
of source ports, or destination ports on the chassis.
NOTE: The monitoring port should not be a part of any other configuration.
description
Enter a description of this monitoring session.
S5000
Syntax
description {description}
To remove the description, use the no description {description}
command.
Parameters
description Enter a description regarding this session (80 characters
maximum).
Port Monitoring
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