Dell Force10 MXL Blade MXL 10/40GbE Switch IO Module Configuration Guide - Page 390

www.dell.com | support.dell.com FTOS Behavior: All monitored frames are tagged if the configured monitoring direction is transmit (TX), regardless of whether the monitored port (MD) is a Layer 2 or Layer 3 port. If the MD port is a Layer 2 port, the frames are tagged with the VLAN ID of the VLAN to which the MD belongs. If the MD port is a Layer 3 port, the frames are tagged with VLAN ID 4095. If the MD port is in a Layer 3 VLAN, the frames are tagged with the respective Layer 3 VLAN ID. For example, in the configuration source tengig 6/0 destination tengig 6/1 direction tx, if the MD port tengigabitethernet 6/0 is an untagged member of any VLAN, all monitored frames that the MG port tengigabitethernet 6/1 receives are tagged with the VLAN ID of the MD port. Similarly, if BPDUs are transmitted, the MG port receives them tagged with the VLAN ID 4095. This behavior might result in a difference between the number of egress packets on the MD port and monitored packets on the MG port. FTOS Behavior: The MXL 10/40GbE 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 To configure port monitoring, use the following example: Step 1 2 3 Task Verify that the intended monitoring port has no configuration other than no shutdown (Figure 21-4). Create a monitoring session using the command monitor session from CONFIGURATION mode (Figure 21-4). Specify the source and destination port and direction of traffic (Figure 21-4). Command Syntax show interface Command Mode EXEC Privilege monitor session CONFIGURATION source MONITOR SESSION 388 | Port Monitoring