Port Monitoring | 18515Port MonitoringThe Aggregator supports user-configured port monitoring. See Configuring Port Monitoring for theconfiguration commands to use.Port monitoring copies all incoming or outgoing packets on one port and forwards (mirrors) them toanother port. The source port is the monitored port (MD) and the destination port is the monitoring port(MG).Important Points to Remember• Port monitoring is supported on physical ports only; virtual local area network (VLAN) andport-channel interfaces do not support port monitoring.• The monitored (source, MD) and monitoring ports (destination, MG) must be on the same switch.• The monitored (source) interface must be a server-facing interface in the format slot/port, where thevalid slot numbers are 0 or 1 and server-facing port numbers are from 1 to 32.• The destination interface must be an uplink port (ports 33 to 56).• In general, a monitoring port should have no ip address and no shutdown as the only configuration;FTOS permits a limited set of commands for monitoring ports. To display these commands, use thecommand ?.• A monitoring port may not be a member of a VLAN.• There may only be one destination port in a monitoring session.• A source port (MD) can only be monitored by one destination port (MG). If you try to assign amonitored port to more than one monitoring port, the following error is displayed (Message 1).Message 1 Assign a Monitored Port to More than One Monitoring PortFTOS(conf)#mon ses 1FTOS(conf-mon-sess-1)#source tengig 0/1 destination tengig 0/33 direction bothFTOS(conf-mon-sess-1)#do show monitor sessionSessionID Source Destination Direction Mode Type--------- ------ ----------- --------- ---- ----1 TenGig 0/1 TenGig 0/33 both interface Port-basedFTOS(conf-mon-sess-1)#mon ses 2FTOS(conf-mon-sess-2)#source tengig 0/1 destination tengig 0/33 direction both% Error: MD port is already being monitored.Note: There is no limit to the number of monitoring sessions per system, provided that there are only fourdestination ports per port-pipe. If each monitoring session has a unique destination port, the maximumnumber of session is four per port-pipe.
