Users Guide

Table Of Contents
Supported
Releases
10.3.0E or later
primary-priority
Configures the priority when selecting the primary and secondary VLT peers during the election.
Syntax
primary-priority value
Parameters value — Enter a lower value than the priority value of the remote peer. The range is from 1 to 65535. The
default value is 32768.
Default 32768.
Command Mode VLT-DOMAIN
Usage Information
After you configure a VLT domain on each peer switch and connect the two VLT peers on each side of the
VLT interconnect, the system elects a primary and secondary VLT peer device. To configure the primary and
secondary roles before the election process, use the primary-priority command. Enter a lower value on
the primary peer and a higher value on the secondary peer. If the primary peer fails, the secondary peer (with
the higher priority) takes the primary role. If the primary peer (with the lower priority) later comes back online,
it is assigned the secondary role; there is no preemption.
If the priority values configured on the two VLT peers are equal, VLT uses the default primary election
mechanism based on the values of the system MAC addresses of the two nodes. The VLT peer with the
lowest system MAC address assumes the primary role.
If the heartbeat is up and the VLTi link goes down between the VLT peers, both the VLT peers retain their
primary and secondary roles. However, the VLT port channel on the secondary VLT peer shuts down.
NOTE: When you configure a priority for VLT peers using this command, the configuration does
not take effect immediately. The primary priority configuration comes into effect the next time
election is triggered.
Example
OS10(conf-vlt-1)#primary-priority 2
Supported
Releases
10.4.1.0 or later
show running-configuration vlt
Displays current configuration of all VLT domains.
Syntax
show running-configuration vlt
Parameter None
Default Not configured
Command Mode EXEC
Usage Information None
Example
OS10# show running-configuration vlt
!
vlt domain 1
peer-routing
discovery-interface ethernet1/1/17
!
interface port-channel1
vlt-port-channel 1
!
interface port-channel2
vlt-port-channel 2
!
interface port-channel3
vlt-port-channel 3
1192 Virtual Link Trunking