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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.
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
The range is from 1 to 128.
3
Enter the VLAN ID number of the VLAN in which the ICL needs to be untagged when ICL hellos from the
other peer are stopped. When the BMP server is connected to a non-default VLAN, the system forwards
BMP traffic via ICL through that configured VLAN when one of the peers gets rebooted.
VLT DOMAIN CONFIGURATION mode
peer-link port-channel id-number peer-down-vlan vlan interface-number
Virtual Link Trunking (VLT)
1186
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Troubleshooting
