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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.
7 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}
The unit IDs are used for internal system operations.
To explicitly congure the default values on each peer switch, use the unit-id command.
Congure a dierent 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 switch reboots.
8 Congure enhanced VLT. Congure the port channel to be used for the VLT interconnect on a VLT switch and enter interface
conguration mode.
CONFIGURATION mode
interface port-channel id-number
Enter the same port-channel number congured with the peer-link port-channel command in the Enabling VLT and Creating
a VLT Domain.
9 Place the interface in Layer 2 mode.
INTERFACE PORT-CHANNEL mode
switchport
10 Associate the port channel to the corresponding port channel in the VLT peer for the VLT connection to an attached device.
INTERFACE PORT-CHANNEL mode
vlt-peer-lag port-channel id-number
Valid port-channel ID numbers are from 1 to 128.
11 Ensure that the port channel is active.
INTERFACE PORT-CHANNEL mode
no shutdown
12 Add links to the eVLT port. Congure a range of interfaces to bulk congure.
CONFIGURATION mode
interface range {port-channel id}
13 Enable LACP on the LAN port.
INTERFACE mode
port-channel-protocol lacp
14 Congure the LACP port channel mode.
INTERFACE mode
port-channel number mode [active]
15 Ensure that the interface is active.
MANAGEMENT INTERFACE mode
no shutdown
16 Repeat steps 1 through 15 for the VLT peer node in Domain 1.
Virtual Link Trunking (VLT)
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