Reference Guide

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, FTOS 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, FTOS 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
3. Place the interface in Layer 2 mode.
INTERFACE PORT-CHANNEL mode
switchport
4. Add one or more port interfaces to the port channel.
INTERFACE PORT-CHANNEL mode
channel-member interface
interface: specify one of the following interface types:
– 1-Gigabit Ethernet: enter gigabitethernet slot/port.
– 10-Gigabit Ethernet: enter tengigabitethernet slot/port.
5. Ensure that the port channel is active.
INTERFACE PORT-CHANNEL mode
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