Cabletron Systems SmartSwitch manual Master for VRID=1 Master for VRID=2 Backup for VRID=2

Chapter 7: VRRP Configuration Guide

Master for VRID=1	Master for VRID=2
Backup for VRID=2	Backup for VRID=1

R1

R2

Interface Addr. = 10.0.0.1/16

VRID=1; Addr. = 10.0.0.1/16

VRID=2; Addr. = 10.0.0.2/16

VRID=1

10.0.0.1/16

VRID=2

10.0.0.2/16

Interface Addr. = 10.0.0.2/16

VRID=1; Addr. = 10.0.0.1/16

VRID=2; Addr. = 10.0.0.2/16

H1

H2

H3

H4

Default Route = 10.0.0.1/16 Default Route = 10.0.0.2/16

Figure 5. Symmetrical VRRP Configuration

In this configuration, half the hosts use 10.0.0.1/16 as their default route, and half use 10.0.0.2/16. IP address 10.0.0.1/16 is associated with virtual router VRID=1, and IP address 10.0.0.2/16 is associated with virtual router VRID=2.

If Router R1, the Master for virtual router VRID=1, goes down, Router R2 would take over the IP address 10.0.0.1/16. Similarly, if Router R2, the Master for virtual router VRID=2, goes down, Router R1 would take over the IP address 10.0.0.2/16.

Configuration of Router R1

The following is the configuration file for Router R1 in Figure 5.

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 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

Router R1 is the owner of IP address 10.0.0.1/16. Line 4 associates this IP address with virtual router VRID=1, so Router R1 is the Master for virtual router VRID=1.

98 SmartSwitch Router User Reference Manual