Filter
Top Products
Connecting a VLT Domain to an Attached Access Device (Switch or Server)
To connect a VLT domain to an attached access device, use the following commands.
On a VLT peer switch: To connect to an attached device, configure the same port channel ID number on
each peer switch in the VLT domain.
1. Configure the same port channel to be used to connect to an attached device and enter interface
configuration mode.
CONFIGURATION mode
interface port-channel id-number
2. Remove an IP address from the interface.
INTERFACE PORT-CHANNEL mode
no ip address
3. Place the interface in Layer 2 mode.
INTERFACE PORT-CHANNEL mode
switchport
4. 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.
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
The valid port-channel ID numbers are from 1 to 128.
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.
Virtual Link Trunking (VLT)
961