Users Guide

• 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 message displays:
Dell(conf)#mon ses 1
Dell(conf-mon-sess-1)#source tengig 0/1 destination tengig 0/33 direction
both
Dell(conf-mon-sess-1)#do show monitor session
SessionID Source Destination Direction Mode Type
--------- ------ ----------- --------- ---- ----
1 TenGig 0/1 TenGig 0/33 both interface Port-based
Dell(conf-mon-sess-1)#mon ses 2
Dell(conf-mon-sess-2)#source tengig 0/1 destination tengig 0/33 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.
Port Monitoring
The Aggregator supports multiple source-destination statements in a monitor session, but there may only
be one destination port in a monitoring session.
There may only be one destination port in a monitoring session (% Error: Only one MG port is
allowed in a session.).
The number of source ports the Dell Networking OS allows within a port-pipe is equal to the number of
physical ports in the port-pipe (n). Multiple source ports may have up to four different destination ports
(Exceeding max MG ports for this MD port pipe.).
In the following examples, ports 0/13, 0/14, 0/15, and 0/16 all belong to the same port-pipe. These ports
mirror traffic to four different destinations (0/33, 0/34, 0/35, and 0/37). Another source port from the
same port-pipe (for example, 0/17) does not support a new destination (for example, 0/4). If you attempt
to configure another destination, an error message is displayed: % Error: Exceeding max MG ports
for this MD port pipe. However, you can configure another monitoring session that uses one of
previously configured destination ports.
Example of Number of Monitoring Ports
Example of Number of Monitoring Ports
Example of Viewing a Monitoring Session
Dell#show mon session
SessionID Source Destination Direction Mode Type
--------- ------ ----------- --------- ---- ----
0 TenGig 0/13 TenGig 0/33 rx interface Port-based
10 TenGig 0/14 TenGig 0/34 rx interface Port-based
20 TenGig 0/15 TenGig 0/35 rx interface Port-based
30 TenGig 0/16 TenGig 0/37 rx interface Port-based
Dell(conf)# monitor session 300
Dell(conf-mon-sess-300)# source tengig 0/17 destination tengig 0/40 direction tx
% Error: Exceeding max MG ports for this MD port pipe.
Dell(conf-mon-sess-300)#
Port Monitoring
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