Dell Z9000 Configuration Manual page 838

Enabling VLT and Creating a VLT Domain
To enable VLT and create a VLT domain, use the following steps.
1. Enable VLT on a switch, then configure a VLT domain and enter VLT-domain configuration mode.
CONFIGURATION mode
vlt domain domain-id
The domain ID range is from 1 to 1000.
Configure the same domain ID on the peer switch to allow for common peering. VLT uses the
domain ID to automatically create a VLT MAC address for the domain. If you do not configure the
system explicitly, the system mac-address of the primary will be the VLT MAC address for the
domain.
To disable VLT, use the no vlt domain command.
NOTE: Do not use MAC addresses such as "reserved" or "multicast."
2. Configure the IP address of the management interface on the remote VLT peer to be used as the
endpoint of the VLT backup link for sending out-of-band hello messages.
VLT DOMAIN CONFIGURATION mode
back-up destination ip-address [interval seconds]
You can optionally specify the time interval used to send hello messages. The range is from 1 to 5
seconds.
3. Configure the port channel to be used as the VLT interconnect between VLT peers in the domain.
VLT DOMAIN CONFIGURATION mode
peer-link port-channel id-number
4. (Optional) Prevent a possible loop during the bootup of a VLT peer switch or a device that accesses
the VLT domain.
CONFIGURATION mode
lacp ungroup member-independent {vlt | port-channel port-channel-id}
LACP on VLT ports (on a VLT switch or access device), which are members of the virtual link trunk, is
not brought up until the VLT domain is recognized on the access device.
5. Repeat Steps 1 to 4 on the VLT peer switch to configure the IP address of this switch as the endpoint
of the VLT backup link and to configure the same port channel for the VLT interconnect.
838
Virtual Link Trunking (VLT)