Users Guide
outgoing interface (OIF) maps after a peer node failure, use the timeout value that you congured through the multicast peer-
routing timeout value command. You can congure 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 congured 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.
Conguring VLAN-Stack over VLT
To congure VLAN-stack over VLT, follow these steps.
1 Congure the VLT LAG as VLAN-stack access or trunk mode on both the peers.
INTERFACE PORT-CHANNEL mode
vlan-stack {access | trunk}
2 Congure 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 congurations.
EXEC Privilege
show running-config
Sample conguration of VLAN-stack over VLT (Peer 1)Congure 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#
Congure 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
!
interface Port-channel 10
1122
Virtual Link Trunking (VLT)