Administrator Guide

channel-member interface
interface: specify one of the following interface types:
• For a 1-GigabitEthernet interface, enter the keyword GigabitEthernet then the slot/port information.
• For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then the slot/port information.
5. Ensure that the port channel is active.
INTERFACE PORT-CHANNEL mode
no shutdown
6. 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
7. Repeat Steps 1 to 6 on the VLT peer switch to configure the same port channel as part of the VLT domain.
8. On an attached switch or server: To connect to the VLT domain and add port channels to it, configure a port channel. For an
example of how to verify the port-channel configuration, refer to VLT Sample Configuration.
To configure the VLAN where a VLT peer forwards received packets over the VLTi from an adjacent VLT peer that is down, use the
peer-down-vlan parameter. When a VLT peer with BMP reboots, untagged DHCP discover packets are sent to the peer over the
VLTi. Using this configuration ensures the DHCP discover packets are forwarded to the VLAN that has the DHCP server.
Configuring a VLT VLAN Peer-Down (Optional)
To configure a VLT VLAN peer-down, use the following commands.
1. Enter VLT-domain configuration mode for a specified VLT domain.
CONFIGURATION mode
vlt domain domain-id
The range of domain IDs is from 1 to 1000.
2. Enter the port-channel number that acts as the interconnect trunk.
VLT DOMAIN CONFIGURATION mode
peer-link port-channel id-number
3. Enter the VLAN ID number of the VLAN where the VLT forwards packets received on the VLTi from an adjacent peer that is down.
VLT DOMAIN CONFIGURATION mode
peer-down-vlan vlan interface number
Configuring Enhanced VLT (Optional)
To configure enhanced VLT (eVLT) between two VLT domains on your network, use the following procedure.
For a sample configuration, refer to eVLT Configuration Example. To set up the VLT domain, use the following commands.
1. Configure the port channel to be used 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 in the Enabling VLT and Creating
a VLT Domain.
2. 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:
• For a 1-GigabitEthernet interface, enter the keyword GigabitEthernet then the slot/port information.
• For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then the slot/port information.
3. Enter VLT-domain configuration mode for a specified VLT domain.
CONFIGURATION mode
vlt domain domain-id
The range of domain IDs is from 1 to 1000.
4. Enter the port-channel number that acts as the interconnect trunk.
VLT DOMAIN CONFIGURATION mode
860
Virtual Link Trunking (VLT)