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Administrator Guide

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Example of Configuring Another Monitoring Session with a Previously Used Destination Port
DellEMC(conf)#monitor session 300
DellEMC(conf-mon-sess-300)#source TenGig 1/17 destination TenGig 1/4 direction tx
% Error: Exceeding max MG ports for this MD port pipe.
DellEMC(conf-mon-sess-300)#
DellEMC(conf-mon-sess-300)#source TenGig 1/17 destination TenGig 1/1 direction tx
DellEMC(conf-mon-sess-300)#do show mon session
SessID Source Destination Dir Mode Source IP Dest IP DSCP
TTL Drop Rate Gre-Protocol FcMonitor
------ ------ ----------- --- ---- --------- -------- ----
--- ---- ---- ----------- ---------
0 Te 1/13 Te 1/1 rx interface 0.0.0.0 0.0.0.0 0
0 No N/A N/A yes
10 Te 1/14 Te 1/1 rx interface 0.0.0.0 0.0.0.0 0
0 No N/A N/A yes
20 Te 1/15 Te 1/1 rx interface 0.0.0.0 0.0.0.0 0
0 No N/A N/A yes
30 Te 1/16 Te 1/1 rx interface 0.0.0.0 0.0.0.0 0
0 No N/A N/A yes
300 Te 1/17 Te 1/1 rx interface 0.0.0.0 0.0.0.0 0
0 No N/A N/A yes
DellEMC#
Example of Viewing a Monitoring Session
In the example below, 0/25 and 0/26 belong to Port-pipe 1. This port-pipe has the same restriction of only four destination
ports, new or used.
DellEMC(conf-mon-sess-300)#do show mon session
SessID Source Destination Dir Mode Source IP Dest IP DSCP
TTL Drop Rate Gre-Protocol FcMonitor
------ ------ ----------- --- ---- --------- -------- ----
--- ---- ---- ----------- ---------
0 Te 1/13 Te 1/1 rx interface 0.0.0.0 0.0.0.0 0
0 No N/A N/A yes
10 Te 1/14 Te 1/2 rx interface 0.0.0.0 0.0.0.0 0
0 No N/A N/A yes
20 Te 1/15 Te 1/3 rx interface 0.0.0.0 0.0.0.0 0
0 No N/A N/A yes
30 Te 1/16 Te 1/37 rx interface 0.0.0.0 0.0.0.0 0
0 No N/A N/A yes
100 Te 1/25 Te 1/38 rx interface 0.0.0.0 0.0.0.0 0
0 No N/A N/A yes
110 Te 1/26 Te 1/39 rx interface 0.0.0.0 0.0.0.0 0
0 No N/A N/A yes
300 Te 1/17 Te 1/1 rx interface 0.0.0.0 0.0.0.0 0
0 No N/A N/A yes
DellEMC#
Given these parameters, the following illustration shows the possible port monitoring configurations.
Figure 104. Port Monitoring Configurations
Dell EMC Networking OS Behavior: All monitored frames are tagged if the configured monitoring direction is egress (TX),
regardless of whether the monitored port (MD) is a Layer 2 or Layer 3 port. If the MD port is a Layer 2 port, the frames are
tagged with the VLAN ID of the VLAN to which the MD belongs. If the MD port is a Layer 3 port, the frames are tagged with
VLAN ID 4095. If the MD port is in a Layer 3 VLAN, the frames are tagged with the respective Layer 3 VLAN ID. For example, in
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Port Monitoring