Examples Of Port Monitoring; Configuring Port Monitoring - Dell C9000 Series Networking Configuration Manual

Examples of Port Monitoring

In the following examples of port monitoring, the four source ports 0/13, 0/14, 0/15, and 0/16 belong to the
same port pipe and mirror traffic to four different destinations (0/1, 0/2, 0/3, and 0/37).
You cannot add another destination on the same port pipe in a monitoring session because a maximum
number of four destination ports are supported on the same port pipe. If you configure another destination
port on the same port pipe, a Syslog message is generated: Unable to create MTP entry for MD interface MG
interface in stack-unit stack-num port-pipe port-num.
Example of Changing the Destination Port in a Monitoring Session
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
--------- ------
0 Te 0/13 Te 0/1
10 Te 0/14 Te 0/2
20 Te 0/15 Te 0/3
30 Te 0/16 Te 0/37
300 Te 0/17 Te 0/1
Dell(conf-mon-sess-300)#
Example of Configuring 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
--------- ------
0 Te 0/13 Te 0/1
10 Te 0/14 Te 0/2
20 Te 0/15 Te 0/3
30 Te 0/16 Te 0/37
300 Te 0/17 Te 0/1
Dell Networking OS Behavior: The switch continues to mirror outgoing traffic even after an MD participating
in spanning tree protocol (STP) transitions from the forwarding to blocking.

Configuring Port Monitoring

Port monitoring (also referred as mirroring) monitors network traffic by forwarding a copy of incoming and
outgoing packets from a source port to a destination port on the same network router To configure port
monitoring on the port extender, use the following commands.
1 Display the running configuration of an interface.
Destination Direction Mode
----------- --------- ----
rx
rx
rx
rx
tx
Destination Direction Mode
----------- --------- ----
rx
rx
rx
rx
tx
Type
----
interface Port-based
interface Port-based
interface Port-based
interface Port-based
interface Port-based
Type
----
interface Port-based
interface Port-based
interface Port-based
interface Port-based
interface Port-based
Port Monitoring 859