Chapter 14: VRRP Configuration Guide

Basic VRRP Configuration

Figure 17 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.

Master

R1

Interface Addr. = 10.0.0.1/16

VRID=1; Addr. = 10.0.0.1/16

Backup

 

 

 

 

 

 

 

 

 

 

R2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VRID=1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Interface Addr. = 10.0.0.2/16

 

 

 

 

 

 

 

 

 

 

 

VRID=1; Addr. = 10.0.0.1/16

 

 

 

 

 

 

 

 

 

 

 

 

10.0.0.1/16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H1

 

 

 

 

 

H2

 

H3

 

 

 

 

 

Default Route = 10.0.0.1/16

H4

Figure 17. 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 17.

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

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.

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Cabletron Systems 9032578-02 manual Basic Vrrp Configuration, Master, Backup, Configuration of Router R1

9032578-02 specifications

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