Users Guide
To congure 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 conguration ensures the DHCP discover packets are forwarded to the VLAN that has the DHCP server.
Conguring a VLT VLAN Peer-Down (Optional)
To congure a VLT VLAN peer-down, use the following commands.
1 Enter VLT-domain conguration mode for a specied 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.
Congure Multi-domain VLT (mVLT) (Optional)
To congure a multi-domain VLT between two VLT domains on your network, use the following procedure.
For a sample conguration, refer to theMulti-domain VLT section.
1 Congure the port channel to be used for the VLT interconnect on a VLT switch and enter Interface Conguration mode.
CONFIGURATION mode
interface port-channel id-number
Enter the same port-channel number congured with the peer-link port-channel command.
2 Add one or more port interfaces to the port channel.
INTERFACE PORT-CHANNEL mode
channel-member interface
interface species one of the following interface types:
• 10-Gigabit Ethernet: Enter tengigabitethernet slot/port.
3 Enter VLT-domain conguration mode for a specied 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 will act as the interconnect trunk.
916
Virtual Link Trunking (VLT)