Reference Guide

Virtual Link Trunking (VLT) | 1485
Command Modes
VLT DOMAIN
Usage
Information
When you create a VLT domain on a switch, the FTOS software automatically assigns a
unique unit ID (0 or 1) to each peer switch. The unit IDs are used for internal system
operations. Use the unit-id command to explicitly configure the unit ID of a VLT peer. You
must configure a different unit ID (0 or 1) on each peer switch.
Use this command to minimize the time required for the VLT system to determine the unit ID
assigned to each peer switch when one peer reboots.
Command
History
vlt domain
Use this command to enable VLT on a switch, configure a VLT domain, enter VLT-domain
configuration mode, set a VLT port delay time, set VLT priorities and configure a VLT peer
link.
Syntax
vlt domain domain-id
Parameters
Command Modes
CONFIGURATION
Command
History
Related
Commands
Usage
Information
The VLT domain ID must be the same between the two VLT devices. If the domain ID is not
the same, a syslog message is generated and VLT will not launch.
vlt domain peer-link
Use this command to configure a VLT peer link for a VLAN to indicate where the VLT peer
forwards packets from the VLTi in a peer failure scenario.
Syntax
vlt domain domain-id peer-link port-channel
Version 8.3.8.0 Introduced on S4810
domain-id
Enter the Domain ID number. You must configure the same domain ID on the
peer switch. VLT uses the domain ID to automatically create a VLT MAC
address for the domain.
Range of domain IDs: 1 to 1000.
Version 8.3.8.0 Introduced on S4810
show vlt
Use the show vlt brief command to display the delay-restore value.