3Com 10014299 Vrrp Configuration, Procedure for each configuration, Vrrp Single Standby, Group

658CHAPTER 46: CONFIGURING VRRP

Table 710 Display and Debug VRRP

Operation	Command
Display VRRP State Information	display vrrp
Enable the debugging of VRRP	debugging vrrp { packet state }

VRRP Configuration	This section describes several different configurations of VRRP with a suggested
Examples	procedure for each configuration
VRRP Single Standby	Host A uses the VRRP standby group which combines router A and router B as its
Group	default gateway to visit host B on the Internet.
	A VRRP standby group consists of the following parts: standby group number1,
	virtual IP address 202.38.160.111, router A as the MASTER and router B as the
	backup with preemption aII. Networking diagram
	Figure 209 VRRP application illustration
		Host B
		10.2.3.1
		Internet
	Router A	Visual IP address	Router B
		202.38.160.111
	202.38.160.1		202.38.160.2
		Host A
		202.38.160.3
1	Configure router A:

[Router-Ethernet0]vrrp vrid 1 virtual-ip 202.38.160.111

[Router-Ethernet0]vrrp vrid 1 priority 120

2Configure router B:

[Router-Ethernet0]vrrp vrid 1 virtual-ip 202.38.160.111

The standby group can be used immediately after configuration. The default gateway of host A can be set as 202.38.160.111.

Under normal conditions, router A functions as the gateway, but when router A is turned off or malfunctioning, router B will function as the gateway instead.

The configuration of preemption mode is aimed for router A to resume its gateway function as the master when it recovers.