Specifications

256 ExtremeWare XOS 11.0 Concepts Guide
Virtual Router Redundancy Protocol
Fully Redundant VRRP Network
You can use two or more VRRP-enabled switches to provide a fully redundant VRRP configuration on
your network. Figure 42 shows a fully redundant VRRP configuration.
Figure 42: Fully redundant VRRP configuration
In Figure 42, switch A is configured as follows:
• IP address 192.168.1.3
• Master router for VRID 1
• Backup router for VRID 2
• MAC address 00-00-5E-00-01-01
Switch B is configured as follows:
• IP address 192.168.1.5
• Master router for VRID 2
• Backup router for VRID 1
• MAC address 00-00-5E-00-01-02
Both virtual routers are simultaneously operational. The traffic load from the four hosts is split between
them. Host 1 and host 2 are configured to use VRID 1 on switch A as their default gateway. Host 3 and
host 4 are configured to use VRID 2 on switch B as their default gateway. In the event that either switch
fails, the backup router configured is standing by to resume normal operation.
EX_069
Default Route
Switch A
Master for virtual IP 192.168.1.3
Master VRID = 1
Backup for virtual IP 192.168.1.5
Backup VRID = 2
MAC address = 00-00-5E-00-01-01
Switch B
Master for virtual IP 192.168.1.5
Master VRID = 2
Backup for virtual IP 192.168.1.3
Backup VRID = 1
MAC address = 00-00-5E-00-01-02
Backup Route