Riverstone Networks WICT1-12 - Manual (Page 198)

12-2 Riverstone Networks RS Switch Router User Guide Release 8.0
Configuring VRRP VRRP Configuration Guide
12.1.1 Basic VRRP Configuration
Figure 12-1 shows a basic VRRP configuration with a single virtual router. Routers R1 and R2 are both configured
with one virtual router (
VRID=1
). Router R1 serves as the Master and Router R2 serves as the Backup. The four end
hosts are configured to use 10.0.0.1/16 as the default route. IP address 10.0.0.1/16 is associated with virtual router
VRID=1
.
Figure 12-1 Basic VRRP configuration
If Router R1 should become unavailable, Router R2 would take over virtual router
VRID=1
and its associated IP
addresses. Packets sent to 10.0.0.1/16 would go to Router R2. When Router R1 comes up again, it would take over as
Master, and Router R2 would revert to Backup.
Configuration of Router R1
The following is the configuration file for Router R1 in Figure 12-1 .
Line 1 adds IP address 10.0.0.1/16 to interface test, making Router R1 the owner of this IP address. Line 2 creates
virtual router
VRID=1
on interface test. Line 3 associates IP address 10.0.0.1/16 with virtual router
VRID=1
. Line 4
starts VRRP on interface test.
In VRRP, the router that owns the IP address associated with the virtual router is the Master. Any other routers that
participate in this virtual router are Backups. In this configuration, Router R1 is the Master for virtual router
VRID=1
because it owns 10.0.0.1/16, the IP address associated with virtual router
VRID=1
.
1: interface create ip test address-netmask 10.0.0.1/16 port et.1.1
2: ip-redundancy create vrrp 1 interface test
3: ip-redundancy associate vrrp 1 interface test address 10.0.0.1/16
4: ip-redundancy start vrrp 1 interface test
R1 R2
H1 H2 H3 H4
Default Route = 10.0.0.1/16
Master Backup
VRID=1
10.0.0.1/16
Interface Addr. = 10.0.0.1/16
VRID=1
Addr. = 10.0.0.1/16
Interface Addr. = 10.0.0.2/16
VRID=1
Addr. = 10.0.0.1/16