Brocade Network OS NETCONF Operations Guide v4.1.1 - Manual (Page 577)

Network OS NETCONF Operations Guide 545
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Configuring a multigroup virtual router cluster
35
Configuring a multigroup virtual router cluster
Figure 9 shows a commonly employed virtual router setup. This setup introduces redundancy by
configuring two virtual router groups. The first group has Router 1 as the master and Router 2 as
the backup. The second group has Router 2 as the master and Router 1 as the backup. This type of
configuration is sometimes called Multigroup VRRP.
FIGURE 9 Dual redundant network access
In this example, Router 1 and Router 2 use VRRP-E to load share as well as provide redundancy to
the hosts. The load sharing is accomplished by creating two VRRP-E groups. Each group has its own
virtual IP address. Half of the clients point to Group 1's virtual IP address as their default gateway
and the other half point to Group 2's virtual IP address as their default gateway. This arrangement
will enable some of the outbound Internet traffic to go through Router 1 and the rest to go through
Router 2.
NOTE
Load sharing is supported by VRRP as well as VRRP-E.
Router 1
Group 1
Router 2 = Backup
Virtual IP address = 192.53.5.254
Priority = 100 (Default)
Track Port = te 102/3/2
Track Priority = 20
Group 2
Router 2 = Master
Virtual IP address = 192.53.5.253
Priority = 110
Track Port = te 102/3/2
Track Priority = 20
Host 2
Default Gateway
192.53.5.254
Group 1
Router 1 = Master
Virtual IP address = 192.53.5.254
Priority = 110
Track Port = te 101/2/4
Track Priority = 20
Group 2
Router 1 = Backup
Virtual IP address = 192.53.5.253
Priority = 110 (Default)
Track Port = te 101/2/4
Track Priority = 20
Router 2 te 101/2/4 te 102/3/2
ve 10 192.53.5.3 ve 10 192.53.5.2
ISL
Internet
Host 1
Default Gateway
192.53.5.254
Host 4
Default Gateway
192.53.5.253
Host 3
Default Gateway
192.53.5.253