Users Guide

Configuring a VLT Interconnect
To configure a VLT interconnect, follow these steps.
1. Configure the port channel for the VLT interconnect on a VLT switch and enter interface
configuration mode.
CONFIGURATION mode
interface port-channel id-number
Enter the same port-channel number configured with the peer-link port-channel command as
described in Enabling VLT and Creating a VLT Domain.
NOTE: To be included in the VLTi, the port channel must be in Default mode (no switchport
or VLAN assigned).
2. Remove an IP address from the interface.
INTERFACE PORT-CHANNEL mode
no ip address
3. 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.
• 40-Gigabit Ethernet: Enter fortyGigE slot/port.
4. Ensure that the port channel is active.
INTERFACE PORT-CHANNEL mode
no shutdown
5. Repeat Steps 1 to 4 on the VLT peer switch to configure the VLT interconnect.
Enabling VLT and Creating a VLT Domain
To enable VLT and create a VLT domain:
1. Enable VLT on a switch, then configure a VLT domain and enter VLT-domain configuration mode.
CONFIGURATION mode
vlt domain domain-id
The domain ID range is from 1 to 1000.
Configure the same domain ID on the peer switch to allow for common peering. VLT uses the
domain ID to automatically create a VLT MAC address for the domain. If you do not configure the
system explicitly, the system mac-address of the primary will be the VLT MAC address for the
domain.
1080
Virtual Link Trunking (VLT)