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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 Conguring 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 trac even after an MD participating in spanning tree protocol
(STP) transitions from the forwarding to blocking.
Conguring Port Monitoring
Port monitoring (also referred as mirroring) monitors network trac by forwarding a copy of incoming and outgoing packets from a source
port to a destination port on the same network router To congure port monitoring on the port extender, use the following commands.
1 Display the running conguration 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 trac, 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 Conguration
Parameters
monitor session id type rpm — The id needs to be unique and not already dened in the box specifying type as rpm denes an
RPM session. type is an optional keyword, required only for rpm and erpm.
Species 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
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Port Monitoring