Chapter 14: VRRP Configuration Guide

On line 5, Router R1 associates IP address 10.0.0.2/16 with virtual router VRID=2. However, since Router R1 does not own IP address 10.0.0.2/16, it is not the default Master for virtual router VRID=2.

Configuration of Router R2

The following is the configuration file for Router R2 in Figure 18.

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

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.

Multi-Backup Configuration

Figure 19 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.

SmartSwitch Router User Reference Manual

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Cabletron Systems 9032578-02 manual Multi-Backup Configuration, Configuration of Router R2
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9032578-02 specifications

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