Dell PowerEdge FX2/FX2s - Manual (Page 202)

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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.
Important Points to Remember
• Port monitoring is supported on physical ports only. Port-channel interfaces and virtual local area
networks (VLANs), are not supported.
• The monitoring (destination, “MG”) and monitored (source, “MD”) ports must be on the same switch.
• The monitored (source) interface must be a server-facing interface in the format slot/port, where valid
slot number is 0 and server-facing port numbers are from 1 to 8. The monitoring interface must be an
uplink port in the chassis.
• Dell Networking OS permits a limited set of commands for monitoring ports. To display these
commands, use the ? command.
• A monitoring port may not be a member of a VLAN.
• There may only be one destination port in a monitoring session.
• A source port (MD) can only be monitored by one destination port (MG). If you try to assign a
monitored port to more than one monitoring port, the following error is displayed as shown in
example.
Example
Dell(conf)#mon ses 1
Dell(conf-mon-sess-1)#source tengig 0/1 destination tengig 0/6
direction both
Dell(conf-mon-sess-1)#do show mon ses
SessionID Source Destination Direction Mode Type
--------- ------ ----------- --------- ---- ----
1 TenGig 0/1 TenGig 0/6 both interface
Port-based
Dell(conf-mon-sess-1)#mon ses 2
Dell(conf-mon-sess-2)#source tengig 0/1 destination tengig 0/7
direction both
% Error: MD port is already being monitored.
NOTE: There is no limit to the number of monitoring sessions per system, provided that there are
only four destination ports per port-pipe. If each monitoring session has a unique destination port,
the maximum number of session is four per port-pipe.
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