Users Guide

or synchronized multicast outgoing interface (OIF) maps after a peer node failure, use the timeout value that you configured
through the multicast peer-routing timeout value command. You can configure an optimal time for a VLT node to
retain synced multicast routes or synced multicast outgoing interface (OIF), after a VLT peer node failure, through the
multicast peer-routing-timeout command in VLT DOMAIN mode. Using the bootstrap router (BSR) mechanism, both
the VLT nodes in a VLT domain can be configured as the candidate RP for the same group range. When an RP fails, the VLT
peer automatically takes over the role of the RP. This phenomenon enables resiliency to be achieved by the PIM BSR protocol.
Configuring VLAN-Stack over VLT
To configure VLAN-stack over VLT, follow these steps.
1 Configure the VLT LAG as VLAN-stack access or trunk mode on both the peers.
INTERFACE PORT-CHANNEL mode
vlan-stack {access | trunk}
2 Configure VLAN as VLAN-stack compatible on both the peers.
INTERFACE VLAN mode
vlan-stack compatible
3 Add the VLT LAG as a member to the VLAN-stack on both the peers.
INTERFACE VLAN mode
member port-channel port—channel ID
4 Verify the VLAN-stack configurations.
EXEC Privilege
show running-config
Sample configuration of VLAN-stack over VLT (Peer 1)
Configure VLT domain
Dell(conf)#vlt domain 1
Dell(conf-vlt-domain)#peer-link port-channel 1
Dell(conf-vlt-domain)#back-up destination 10.16.151.116
Dell(conf-vlt-domain)#primary-priority 100
Dell(conf-vlt-domain)#system-mac mac-address 00:00:00:11:11:11
Dell(conf-vlt-domain)#unit-id 0
Dell(conf-vlt-domain)#
Dell#show running-config vlt
!
vlt domain 1
peer-link port-channel 1
back-up destination 10.16.151.116
primary-priority 100
system-mac mac-address 00:00:00:11:11:11
unit-id 0
Dell#
Configure VLT LAG as VLAN-Stack Access or Trunk Port
Dell(conf)#interface port-channel 10
Dell(conf-if-po-10)#switchport
Dell(conf-if-po-10)#vlt-peer-lag port-channel 10
Dell(conf-if-po-10)#vlan-stack access
Dell(conf-if-po-10)#no shutdown
Dell#show running-config interface port-channel 10
Virtual Link Trunking (VLT) 1015