Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 859

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 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(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 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 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. Port Monitoring 859