Deployment Guide

Table Of Contents
Virtual Link Trunking (VLT)
Virtual link trunking (VLT) is a Dell EMC technology that provides two Dell EMC switches the ability to function as a single
switch. VLT allows physical links between two Dell EMC switches to appear as a single virtual link to the network core or other
switches such as Edge, Access, or top-of-rack (ToR). As a result, the two physical switches appear as a single switch to the
connected devices.
Topics:
Overview
Configure Virtual Link Trunking
RSTP Configuration
PVST+ Configuration
Peer Routing Configuration Example
eVLT Configuration Example
PIM-Sparse Mode Configuration Example
Verifying a VLT Configuration
Additional VLT Sample Configurations
Troubleshooting VLT
Reconfiguring Stacked Switches as VLT
Specifying VLT Nodes in a PVLAN
Configuring a VLT VLAN or LAG in a PVLAN
Proxy ARP Capability on VLT Peer Nodes
VLT Nodes as Rendezvous Points for Multicast Resiliency
Configuring VLAN-Stack over VLT
IPv6 Peer Routing in VLT Domains Overview
Configure BFD in VLT Domain
VXLAN on VLT
Overview
In a traditional switched topology as shown below, spanning tree protocols (STPs) are used to block one or more links to
prevent loops in the network. Although loops are prevented, bandwidth of all links is not effectively utilized by the connected
devices.
Figure 133. Traditional switched topology
58
926 Virtual Link Trunking (VLT)