Concept Guide

Peer-Routing-Timeout timer: 0 seconds
Multicast peer-routing timeout: 150 seconds
VXLAN on VLT
VLT peers are two nodes in the network that are loosely coupled. It provides high availability to the other ends. VXLAN on VLT provides
resiliency to the servers connected to southbound port-channels and VTEPS connected through L3 cloud to northbound interfaces. As
gateway IP address conguration on both peers is the same, remote VTEP’s view it as a single node. Packets from remote VTEP’s can land
on any node, either VLT primary or secondary. Southbound interfaces are connected via port channels. Even if a port-channel member
connected to one peer is down, the server can send/receive trac through the other VLT peer.
The gure below shows the topology for a data-center interconnect, in which static VXLAN is used for linking geographically dispersed
data centers. VXLAN tunnels are used to communicate across the data centers. VXLAN on VLT provides high availability to the L3 network
and to the servers connected via LAG.
Virtual Link Trunking (VLT) 1131