Verifying a VLT ConfigurationTo monitor the operation or verify the configuration of a VLT domain, use any of the following show commands on the primary andsecondary VLT switches.• Display information on backup link operation.EXEC modeshow vlt backup-link• Display general status information about VLT domains currently configured on the switch.EXEC modeshow vlt brief• Display detailed information about the VLT-domain configuration, including local and peer port-channel IDs, local VLT switch status, andnumber of active VLANs on each port channel.EXEC modeshow vlt detail• Display the VLT peer status, role of the local VLT switch, VLT system MAC address and system priority, and the MAC address andpriority of the locally-attached VLT device.EXEC modeshow vlt role• Display the current configuration of all VLT domains or a specified group on the switch.EXEC modeshow running-config vlt• Display statistics on VLT operation.EXEC modeshow vlt statistics• Display the RSTP configuration on a VLT peer switch, including the status of port channels used in the VLT interconnect trunk and toconnect to access devices.EXEC modeshow spanning-tree rstp• Display the current status of a port or port-channel interface used in the VLT domain.EXEC modeshow interfaces interface• interface: specify one of the following interface types:• For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then the stack/slot/port/subport information.• For a 25-Gigabit Ethernet interface, enter the keyword twentyFiveGigE then the stack/slot/port/subport information.• For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the stack/slot/port[/subport] information.• For a 50-Gigabit Ethernet interface, enter the keyword fiftyGigE then the stack/slot/port/subport information.• For a 100-Gigabit Ethernet interface, enter the keyword hundredGigE then the stack/slot/port information.• For a port channel interface, enter the keywords port-channel then a number.Examples of the show vlt and show spanning-tree rstp CommandsThe following example shows the show vlt backup-link command.Dell_VLTpeer1# show vlt backup-linkVLT Backup LinkVirtual Link Trunking (VLT) 961
