Users Guide

Verifying a VLT Configuration
To monitor the operation or verify the configuration of a VLT domain, use any of the following show commands on the primary
and secondary VLT switches.
● Display information on backup link operation.
EXEC mode
show vlt backup-link
● Display general status information about VLT domains currently configured on the switch.
EXEC mode
show vlt brief
● Display detailed information about the VLT-domain configuration, including local and peer port-channel IDs, local VLT switch
status, and number of active VLANs on each port channel.
EXEC mode
show vlt detail
● Display the VLT peer status, role of the local VLT switch, VLT system MAC address and system priority, and the MAC
address and priority of the locally-attached VLT device.
EXEC mode
show vlt role
● Display the current configuration of all VLT domains or a specified group on the switch.
EXEC mode
show running-config vlt
● Display statistics on VLT operation.
EXEC mode
show vlt statistics
● Display the RSTP configuration on a VLT peer switch, including the status of port channels used in the VLT interconnect
trunk and to connect to access devices.
EXEC mode
show spanning-tree rstp
● Display the current status of a port or port-channel interface used in the VLT domain.
EXEC mode
show interfaces interface
○ interface: specify one of the following interface types:
￭ For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then the slot/port/subport
information.
￭ For a 25-Gigabit Ethernet interface, enter the keyword twentyFiveGigE then the slot/port[/subport] information.
￭ For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the slot/port/subport information.
￭ For a 50-Gigabit Ethernet interface, enter the keyword fiftyGigE then the slot/port/subport information.
￭ For a 100-Gigabit Ethernet interface, enter the keyword hundredGigE then the slot/port information.
￭ For a port channel interface, enter the keywords port-channel then a number.
The following example shows the show vlt backup-link command.
Dell_VLTpeer1# show vlt backup-link
VLT Backup Link
-----------------
Destination: 10.11.200.18
Peer HeartBeat status: Up
HeartBeat Timer Interval: 1
HeartBeat Timeout: 3
UDP Port: 34998
HeartBeat Messages Sent: 1026
HeartBeat Messages Received: 1025
Dell_VLTpeer2# show vlt backup-link
Virtual Link Trunking (VLT)
949