Avaya Configuring VRRP Services Bedienungsanleitung PDF herunterladen (Seite 15)

VRRP Concepts

304138-A Rev 00

1-3

Planning Your Network

You can use VRRP to target stub networks with hosts having default gateway

addresses to provide redundancy for IP addresses. To avoid a single point of

failure, you should configure the default gateway IP address as the virtual router

IP address on multiple IP interfaces on different physical routers. Refer to the

following sample configurations when determining how to configure VRRP in

your network.

Sample Configurations

The configuration in Figure 1-1 shows a simple VRRP scenario in which both

router A and router B are running VRRP. The end hosts install a default route to

the IP address of router A, which serves as the master virtual router for virtual

router 1. If router A fails, then router B becomes the master virtual router for

virtual router 1.

Figure 1-1. Using VRRP with One Master and One Backup Virtual Router

Virtual router 1

Master virtual

router for 1.1.1.1

Virtual router 1

Backup virtual

router for 1.1.1.1

Router A

(running VRRP)

Router B

(running VRRP)

IP Address

1.1.1.1

IP Address

2.2.2.2

Host

DG=1.1.1.1

DG=Default gateway

DG=1.1.1.1 DG=1.1.1.1 DG=1.1.1.1

Host

VR0001A

Key

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Avaya Configuring VRRP Services Bedienungsanleitung Seite 15