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1108 PowerConnect B-Series FCX Configuration Guide
53-1002266-01
Overview
31
FIGURE 152 Router1 and Router2 are configured to provide dual redundant network access for
the host
In this example, Switch 1 and Switch 2 use VRRPE to load share as well as provide redundancy to
the hosts. The load sharing is accomplished by creating two VRRPE groups. Each group has its
own virtual IP addresses. Half of the clients point to VRID 1's virtual IP address as their default
gateway and the other half point to VRID 2's virtual IP address as their default gateway. This will
enable some of the outbound Internet traffic to go through Switch 1 and the rest to go through
Switch 2.
Switch 1 is the master for VRID 1 (backup priority = 110) and Switch 2 is the backup for VRID 1
(backup priority = 100). Switch 1 and Switch 2 both track the uplinks to the Internet. If an uplink
failure occurs on Switch 1, its backup priority is decremented by 20 (track priority = 20), so that all
traffic destined to the Internet is sent through Switch 2 instead.
Similarly, Switch 2 is the master for VRID 2 (backup priority = 110) and Switch 1 is the backup for
VRID 2 (backup priority = 100). Switch 1 and Switch 2 are both tracking the uplinks to the Internet.
If an uplink failure occurs on Switch 1, its backup priority is decremented by 20 (track priority = 20),
so that all traffic destined to the internet is sent through Switch 2 instead.
Internet
Switch 1
Switch 2
e 2/4
e 1/6
192.53.5.2
192.53.5.3
e 5/1
e 3/2
Host1
Default Gateway
192.53.5.254
Host2
Default Gateway
192.53.5.254
Host3
Default Gateway
192.53.5.253
Host4
Default Gateway
192.53.5.253
VRID 1
Switch 1 = Master
Virtual IP address 192.53.5.254
Priority = 110
Track Port = e 2/4
Track Priority = 20
VRID 2
Switch 1 = Backup
Virtual IP address 192.53.5.253
Priority = 100 (Default)
Track Port = e 2/4
Track Priority = 20
VRID 1
Switch 2 = Backup
Virtual IP address 192.53.5.254
Priority = 100 (Default)
Track port = e 3/2
Track priority = 20
VRID 2
Switch 2 = Master
Virtual IP address 192.53.5.253
Priority = 110
Track Port = e 3/2
Track Priority = 20