Dell Force10 S55T S55 Configuration Guide FTOS 8.3.5.3 - Page 527

28 Port Monitoring c e s Port Monitoring is supported on platforms: Port Monitoring is a feature that copies all incoming or outgoing packets on one port and forwards (mirrors) them to to another port. The source port is the monitored port (MD) and the destination port is the monitoring port (MG). Port Monitoring functionality is different between platforms, but the behavior is the same, with highlighted exceptions. This chapter is divided into the following sections: • Important Points to Remember on page 527 • Port Monitoring on E-Series on page 528 • Port Monitoring on C-Series and S-Series on page 529 • Configuring Port Monitoring on page 532 • Flow-based Monitoring on page 534 Important Points to Remember • Port Monitoring is supported on physical ports only; VLAN and port-channel interfaces do not support port monitoring. • The Monitored (source, "MD") and Monitoring ports (destination, "MG") must be on the same switch. • 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; display them using the command ?. A monitoring port also 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). The following error is displayed if you try to assign a monitored port to more than one monitoring port. Force10(conf)#mon ses 1 Force10(conf-mon-sess-1)#$gig 0/0 destination gig 0/60 direction both Force10(conf-mon-sess-1)#do show mon ses SessionID Source Destination Direction Mode Type --------- ------ ----------- --------- ---- ---- 1 Gi 0/0 Gi 0/60 both interface Port-based Force10(conf-mon-sess-1)#mon ses 2 Force10(conf-mon-sess-2)#source gig 0/0 destination gig 0/61 direction both % Error: MD port is already being monitored. • The C-Series and S-Series may only have four destination ports per port-pipe. There is no limitation on the total number of monitoring sessions. Port Monitoring | 527