Administrator Guide

10 Te 0/14 Te 0/2 rx interface Port-based
20 Te 0/15 Te 0/3 rx interface Port-based
30 Te 0/16 Te 0/37 rx interface Port-based
300 Te 0/17 Te 0/1 tx interface Port-based
Dell(conf-mon-sess-300)#
Example of Conguring Another Monitoring Session with a Previously Used Destination Port
Dell(conf)#mon ses 300
Dell(conf-mon-sess-300)#source tengig 0/17 destination tengig 0/4 direction tx
%Unable to create MTP entry for MD tenG 0/17 MG tenG 0/4 in stack-unit 0 port-pipe 0.
Dell(conf-mon-sess-300)#
Dell(conf-mon-sess-300)#source tengig 0/17 destination tengig 0/1 direction tx
Dell(conf-mon-sess-300)#do show mon session
SessionID Source Destination Direction Mode Type
--------- ------ ----------- --------- ---- ----
0 Te 0/13 Te 0/1 rx interface Port-based
10 Te 0/14 Te 0/2 rx interface Port-based
20 Te 0/15 Te 0/3 rx interface Port-based
30 Te 0/16 Te 0/37 rx interface Port-based
300 Te 0/17 Te 0/1 tx interface Port-based
Dell Networking OS Behavior: The switch continues to mirror outgoing trac even after an MD participating in spanning tree protocol
(STP) transitions from the forwarding to blocking.
Conguring Port Monitoring
Port monitoring (also referred as mirroring) monitors network trac by forwarding a copy of incoming and outgoing packets from a source
port to a destination port on the same network router To congure port monitoring on the port extender, use the following commands.
1 Display the running conguration of an interface.
EXEC Privilege mode
show running-config monitor session
2 Create a monitoring session using the command monitor session from CONFIGURATION mode, as shown in the following example.
MONITOR SESSION mode
monitor session [session-ID] source interface | range destination interface direction {rx |
tx | both}
3 Specify the source and destination port and direction of trac, as shown in the following example.
MONITOR SESSION mode
monitor session 1 source TenGigabitEthernet 0/2 destination TenGigabitEthernet 0/4 direction
rx
Example of Viewing Port Monitoring Conguration
Parameters
monitor session id type rpm — The id needs to be unique and not already dened in the box specifying type as rpm denes an
RPM session. type is an optional keyword, required only for rpm and erpm.
Species one of the following types:
• rpm — Creates a remote port monitoring (rpm) session.
• erpm — Creates an encapsulated remote port monitoring (erpm) session.
source interface interface | range — Specify the port or list of ports that needs to be monitored
Port Monitoring
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