Administrator Guide

Port-channel 1, IPv6 VRID: 255, Version: 3, Net: fe80::201:e8ff:fe8a:fd76
VRF: 2 vrf2
State: Backup, Priority: 90, Master: fe80::201:e8ff:fe8a:e9ed
Hold Down: 0 centisec, Preempt: TRUE, AdvInt: 100 centisec
Accept Mode: FALSE, Master AdvInt: 100 centisec
Adv rcvd: 548, Bad pkts rcvd: 0, Adv sent: 0
Virtual MAC address:
00:00:5e:00:02:ff
Virtual IP address:
10:1:1::255 fe80::255
Proxy Gateway with VRRP
VLT proxy gateway solves the inefficient traffic trombone problem when VLANs are extended between date centers and when VMs are
migrated between the two DCs. Starting from Dell EMC Networking OS 9.14.0.0, VRRP provides a much simpler method to solve the
traffic trombone problem.
This is achieved by configuring same VRRP group IDs to the extended L3 VLANs and VRRP stays active-active across all four VLT nodes
even though they are in two different VLT domains.
The following illustration shows a sample configuration with two data centers:
• Server racks, Rack 1 and Rack 2, are part of data centers DC1 and DC2, respectively.
• Rack 1 is connected to devices A1 and B1 in a Layer 2 network segment.
• Rack 2 is connected to devices A2 and B2 in a Layer 2 network segment.
• A VLT link aggregation group (LAG) is present between A1 and B1 as well as A2 and B2.
• A1 and B1 are connected to core routers, C1 and D1 with VLT routing enabled.
• A2 and B2 are connected to core routers, C2 and D2, with VLT routing enabled.
948
Virtual Router Redundancy Protocol (VRRP)