Service Manual

INTERFACE PORT-CHANNEL mode
vlt-peer-lag port-channel id-number
The valid port-channel ID numbers are from 1 to 128.
7. Repeat Steps 1 to 6 on the VLT peer switch to congure 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, congure a port channel. For an
example of how to verify the port-channel conguration, refer to VLT Sample Conguration.
To congure 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 conguration ensures the DHCP discover packets are forwarded to the VLAN that has the DHCP server.
Conguring a VLT VLAN Peer-Down (Optional)
To congure a VLT VLAN peer-down, use the following commands.
1. Enter VLT-domain conguration mode for a specied 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
The range is from 1 to 128.
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
The range is from 1 to 4094.
Conguring Enhanced VLT (eVLT) (Optional)
To congure enhanced VLT (eVLT) between two VLT domains on your network, use the following procedure.
For a sample conguration, refer to eVLT Conguration Example. To set up the VLT domain, use the following commands.
1. 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 .
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 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then the slot/port/subport information.
• For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the slot/port information.
3. Enter VLT-domain conguration mode for a specied VLT domain.
Virtual Link Trunking (VLT)
807