Reference Guide

Virtual Link Trunking (VLT) | 245
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Virtual Link Trunking (VLT)
Overview
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, all LAGs are peer-LAG VLT
enabled. so you do not need to configure any VLT LAGs. 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.
Commands
• show vlt backup-link
• show vlt brief
• show vlt detail
• show vlt role
• show vlt statistics
• stack-unit iom-mode
show vlt backup-link
Display information on backup link operation
Syntax
show vlt backup-link
Defaults
Not configured.
Command Modes
EXEC
Command
History
Version 9.2(0.0) Introduced on the DELL Poweredge I/O Aggregator Switch IO Module.