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Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

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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 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:
      • 10-Gigabit Ethernet: enter tengigabitethernet slot/port .
      • Port channel: enter port-channel {1-128}.

Example of 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
                                    
                                    VLT Backup Link
                                    -----------------
                                    Destination:                 10.11.200.20
                                    Peer HeartBeat status:       Up
                                    HeartBeat Timer Interval:    1
                                    HeartBeat Timeout:           3
                                    UDP Port:                    34998
                                    HeartBeat Messages Sent:     1030
                                    HeartBeat Messages Received: 1014
                                 

Example of the show vlt brief Command

Dell_VLTpeer1# show vlt brief
                                    VLT Domain Brief
                                    ------------------
                                    Domain ID:                     1000
                                    Role:                          Secondary
                                    Role Priority:                 32768
                                    ICL Link Status:               Up
                                    HeartBeat Status:              Up
                                    VLT Peer Status:               Up
                                    Local Unit Id:                 0
                                    Version:                       5(1)
                                    Local System MAC address:      00:01:e8:8a:e9:70
                                    Remote System MAC address:     00:01:e8:8a:e7:e7
                                    Configured System MAC address: 00:0a:0a:01:01:0a
                                    Remote system version:         5(1)
                                    Delay-Restore timer:           90 seconds
                                    
                                    Dell_VLTpeer2# show vlt brief
                                    VLT Domain Brief
                                    ------------------
                                    Domain ID:                       1000
                                    Role:                          Primary
                                    Role Priority:                 32768
                                    ICL Link Status:               Up
                                    HeartBeat Status:              Up
                                    VLT Peer Status:               Up
                                    Local Unit Id:                 1
                                    Version:                       5(1)
                                    Local System MAC address:      00:01:e8:8a:e7:e7
                                    Remote System MAC address:     00:01:e8:8a:e9:70
                                    Configured System MAC address: 00:0a:0a:01:01:0a
                                    Remote system version:         5(1)
                                    Delay-Restore timer:           90 seconds
                                 

Example of the show vlt detail Command

Dell_VLTpeer1# show vlt detail
                                    
                                    Local LAG Id Peer LAG Id Local Status Peer Status Active VLANs
                                    ------------ ----------- ------------ ----------- -------------
                                    100          100         UP            UP         10, 20, 30
                                    127          2           UP            UP        20, 30
                                    
                                    Dell_VLTpeer2# show vlt detail
                                    
                                    Local LAG Id Peer LAG Id Local Status Peer Status Active VLANs
                                    ------------ ----------- ------------ ----------- -------------
                                    2            127         UP           UP          20, 30
                                    100          100         UP           UP          10, 20, 30
                                 

Example of the show vlt role Command

Dell_VLTpeer1# show vlt role
                                    
                                    VLT Role
                                    ----------
                                    VLT Role:                   Primary
                                    System MAC address:         00:01:e8:8a:df:bc
                                    System Role Priority:       32768
                                    Local System MAC address:   00:01:e8:8a:df:bc
                                    Local System Role Priority: 32768
                                    
                                    Dell_VLTpeer2# show vlt role
                                    
                                    VLT Role
                                    ----------
                                    VLT Role:                   Secondary
                                    System MAC address:         00:01:e8:8a:df:bc
                                    System Role Priority:       32768
                                    Local System MAC address:   00:01:e8:8a:df:e6
                                    Local System Role Priority: 32768
                                 

Example of the show running-config vlt Command

Dell_VLTpeer1# show running-config vlt
                                    !
                                    vlt domain 30
                                    peer-link port-channel 60
                                    back-up destination 10.11.200.18
                                    
                                    Dell_VLTpeer2# show running-config vlt
                                    !
                                    vlt domain 30
                                    peer-link port-channel 60
                                    back-up destination 10.11.200.20
                                 

Example of the show vlt statistics Command

Dell_VLTpeer1# show vlt statistics
                                    
                                    VLT Statistics
                                    ----------------
                                    HeartBeat Messages Sent:     987
                                    HeartBeat Messages Received: 986
                                    ICL Hello's Sent:            148
                                    ICL Hello's Received:        98
                                    
                                    Dell_VLTpeer2# show vlt statistics
                                    
                                    VLT Statistics
                                    ----------------
                                    HeartBeat Messages Sent:     994
                                    HeartBeat Messages Received: 978
                                    ICL Hello's Sent:            89
                                    ICL Hello's Received:        89
                                 

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