Administrator Guide

Table Of Contents
This default route is configured for testing purposes, as described in the next section. The access switch (A1) is used to
generate ICMP test PINGs to a loopback interface on CR1. This default route points to DellEMC#2s VLAN 800 SVI interface.
Its in place to ensure that routed test traffic has DellEMC#2s MAC address as the destination address in the Ethernet frames
header
When A1 sends a packet to R1, the VLT peers act as the default gateway for each other. If the packet reaches Dell-1,
irrespective of the default gateway used, Dell-1 routes the packet to R1. Similarly, if the packet reaches Dell-2, irrespective of
the default gateway used, Dell-2 routes the packet to R1.
eVLT Configuration Example
The following example demonstrates the steps to configure enhanced VLT (eVLT) in a network.
In this example, you are configuring two domains. Domain 1 consists of Peer 1 and Peer 2; Domain 2 consists of Peer 3 and Peer
4, as shown in the following example.
In Domain 1, configure Peer 1 fist, then configure Peer 2. When that is complete, perform the same steps for the peer nodes in
Domain 2. The interface used in this example is TenGigabitEthernet.
Figure 137. eVLT Configuration Example
eVLT Configuration Step Examples
In Domain 1, configure the VLT domain and VLTi on Peer 1.
Domain_1_Peer1#configure
Domain_1_Peer1(conf)#interface port-channel 1
Domain_1_Peer1(conf-if-po-1)# channel-member GigabitEthernet 1/8-1/9
Domain_1_Peer1(conf)#vlt domain 1000
Domain_1_Peer1(conf-vlt-domain)# peer-link port-channel 1
Domain_1_Peer1(conf-vlt-domain)# back-up destination 10.16.130.11
Domain_1_Peer1(conf-vlt-domain)# system-mac mac-address 00:0a:00:0a:00:0a
Domain_1_Peer1(conf-vlt-domain)# peer-routing
Domain_1_Peer1(conf-vlt-domain)# unit-id 0
Configure eVLT on Peer 1.
Domain_1_Peer1(conf)#interface port-channel 100
Domain_1_Peer1(conf-if-po-100)# switchport
Domain_1_Peer1(conf-if-po-100)# vlt-peer-lag port-channel 100
Domain_1_Peer1(conf-if-po-100)# no shutdown
Virtual Link Trunking (VLT)
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