Administrator Guide

primary-priority value
To reconfigure the primary role of VLT peer switches, use the primary-priority command. To
configure the primary role on a VLT peer, enter a lower value than the priority value of the remote peer.
The priority values are from 1 to 65535. The default is 32768.
3 (Optional) When you create a VLT domain on a switch, the system automatically creates a VLT-system
MAC address used for internal system operations.
VLT DOMAIN CONFIGURATION mode
system-mac mac-address mac-address
To explicitly configure the default MAC address for the domain by entering a new MAC address, use the
system-mac command. The format is aaaa.bbbb.cccc.
Also, reconfigure the same MAC address on the VLT peer switch.
Use this command to minimize the time required for the VLT system to synchronize the default MAC
address of the VLT domain on both peer switches when one peer switch reboots.
4 (Optional) When you create a VLT domain on a switch, the system automatically assigns a unique unit ID
(0 or 1) to each peer switch.
VLT DOMAIN CONFIGURATION mode
unit-id {0 | 1}
To explicitly configure the default values on each peer switch, use the unit-id command.
Configure a different unit ID (0 or 1) on each peer switch.
Unit IDs are used for internal system operations.
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 switch reboots.
Connecting a VLT Domain to an Attached
Access Device (Switch or Server)
To connect a VLT domain to an attached access device, use the following commands.
On a VLT peer switch: To connect to an attached device, configure the same port channel ID number on
each peer switch in the VLT domain.
1 Configure the same port channel to be used to connect to an attached device and enter interface
configuration mode.
CONFIGURATION mode
interface port-channel id-number
2 Remove an IP address from the interface.
INTERFACE PORT-CHANNEL mode
no ip address
Virtual Link Trunking (VLT) 968