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Riverstone Networks RS Switch Router User Guide Release 8.0 12-5
VRRP Configuration Guide Configuring VRRP
Configuration of Router R2
The following is the configuration file for Router R2 in Figure 12-2.
On line 1, Router R2 is made owner of IP address 10.0.0.2/16. Line 5 associates this IP address with virtual router
VRID=2
, so Router R2 is the Master for virtual router
VRID=2
. Line 4 associates IP address 10.0.0.1/16 with virtual
router
VRID=1
, making Router R2 the Backup for virtual router
VRID=1
.
12.1.3 Multi-Backup Configuration
Figure 12-3 shows a VRRP configuration with three routers and three virtual routers. Each router serves as a Master
for one virtual router and as a Backup for each of the others. When a Master router goes down, one of the Backups
takes over the IP addresses of its virtual router.
In a VRRP configuration where more than one router is backing up a Master, you can specify which Backup router
takes over when the Master goes down by setting the priority for the Backup routers.
Figure 12-3 Multi-Backup VRRP configuration
1: interface create ip test address-netmask 10.0.0.2/16 port et.1.1
!
2: ip-redundancy create vrrp 1 interface test
3: ip-redundancy create vrrp 2 interface test
!
4: ip-redundancy associate vrrp 1 interface test address 10.0.0.1/16
5: ip-redundancy associate vrrp 2 interface test address 10.0.0.2/16
!
6: ip-redundancy start vrrp 1 interface test
7: ip-redundancy start vrrp 2 interface test
R1 R2
H1 H2 H3 H4
Default Route = 10.0.0.1/16
Master for VRID=1
Default Route = 10.0.0.2/16
1st Backup for VRID=2
R3
H5 H6
Default Route = 10.0.0.3/16
1st Backup for VRID=3
Master for VRID=2
1st Backup for VRID=1
2nd Backup for VRID=3
Master for VRID=3
2nd Backup for VRID=1
2nd Backup for VRID=2
VRID=1
10.0.0.1/16
VRID=2
10.0.0.2/16
VRID=3
10.0.0.3/16