Friday, July 2, 2010

Vyatta -- Grouping To VRRP Interfaces Together

If you're using Vyatta as a router and you want to group two vrrp interfaces together for redundancy, use the sync-group option to have the two interfaces fail over together.  This is useful if you have two Vyatta routers on two separate switches and you want to fail over if one of the switches fail or if only one interface on the server fails.

Here is an example with rtr01 being the master router.  If just eth0 or just eth1 fails, both vrrp groups fail and service is transfered to rtr02.

rtr01 network configuration
- eth0 real 10.0.0.2
- eth0 vrrp 10.0.0.1
- eth1 real 10.1.0.2
- eth1 vrrp 10.1.0.1

Vyatta interface config:

 interfaces {
     ethernet eth0 {
         address 10.0.0.2/16
         hw-id 00:13:72:65:b4:cf
         vrrp {
             vrrp-group 1 {
                 advertise-interval 1
                 priority 150
                 sync-group failover
                 virtual-address 10.0.0.1/16
             }
         }
     }
     ethernet eth1 {
         address 10.1.0.2/16
         hw-id 00:13:72:65:b4:d0
         vrrp {
             vrrp-group 2 {
                 advertise-interval 1
                 priority 150
                 sync-group failover
                 virtual-address 10.1.0.1/16
             }
         }
     }
 }


rtr02 network configuration
- eth0 real 10.0.0.3
- eth0 vrrp 10.0.0.1
- eth1 real 10.1.0.2
- eth1 vrrp 10.1.0.1

Vyatta interface config:

 interfaces {
     ethernet eth0 {
         address 10.0.0.3/16
         hw-id 00:13:72:65:69:a9
         vrrp {
             vrrp-group 1 {
                 advertise-interval 1
                 priority 20
                 sync-group failover
                 virtual-address 10.0.0.1/16
             }
         }
     }
     ethernet eth1 {
         address 10.1.0.3/16
         hw-id 00:13:72:65:69:aa
         vrrp {
             vrrp-group 2 {
                 advertise-interval 1
                 priority 20
                 sync-group failover
                 virtual-address 10.1.0.1/16
             }
         }
     }
 }

No comments:

Post a Comment