Dell PowerEdge FX2/FX2s - Manual (Page 265)

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Virtual Link Trunking (VLT)
Virtual link trunking (VLT) allows physical links between two chassis to appear as a single virtual link to the
network core. VLT domain configuration is automatic and you must connect the base module ports for
VLT interconnect (VLTi) communication. In VLT mode, port 0/9 is added in the LAG 127 and the LAG 127
is used as VLTi. If you change to VLT mode, reboot the I/O aggregator. VLT mode VLT provides Layer 2
multipathing, creating redundancy through increased bandwidth, enabling multiple parallel paths
between nodes and load-balancing traffic where alternative paths exist. To enable VLT in FN2210S,
convert the ports 9 and 10 to ethernet mode of operation.
The VLT commands described in this chapter are:
• show vlt backup-link
• show vlt brief
• show vlt detail
• show vlt role
• show vlt statistics
• stack-unit iom-mode vlt
show vlt backup-link
Displays information on the backup link operation.
Syntax show vlt backup-link
Default Not configured.
Command
Modes EXEC
Command
History
Version 9.4(0.0) Supported on the FN I/O aggregator.
Example
Dell# show vlt backup-link
VLT Backup Link
-----------------
Destination: 169.254.31.23
Peer HeartBeat status: Up
HeartBeat Timer Interval: 1
HeartBeat Timeout: 3
UDP Port: 34998
HeartBeat Messages Sent: 24
HeartBeat Messages Received: 25
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