User's Manual

501
Chapter 70 VRRP Configuration
70.1 Overview
The Virtual Router Redundancy Protocol (VRRP) ensures the successful single-node service in the default
static routing condition. VRRP avoids the defects of the statically designated gateway. A group of SWITCHs
can work together as a virtual SWITCH through VRRP. The virtual SWITCH has a virtual IP address and a
virtual MAC address for the outside. VRRP chooses one SWITCH from the SWITCH group as the master
SWITCH, responsible for forwarding packet. When the master SWITCH has problems, the standby SWITCH
will promptly take over the tasks of the master SWITCH without changing the default gateway address. The
whole takeover process is transparent to the terminal system. This mechanism can provide fast and effective
resolution when trouble occurs.
70.2 VRRP Configuration Task List
 Enabling/Disabling VRRP on the Interface
 Configuring VRRP authentication mode
 Configuring VRRP priority preemption
 Configuring VRRP priority
 Configuring VRRP clock value
 Monitoring and maintaining VRRP
70.3 VRRP Configuration Task
70.3.1 Configuring VRRP Virtual IP Address
Run the following commands in vlan interface configuration mode.
Command Purpose
vrrp
vrid
associate
virtual-address
address-mask
Configures VRRP Virtual IP address on
the interface
no vrrp
vrid
associate [
virtual-address
address-mask
]
Deletes VRRP Virtual IP address on the
interface
The virtual SWITCH is enabled after the virtual address of VRRP is configured. The virtual address and the
primary IP address of the port must be in the same network segment. Otherwise, the virtual SWITCH remains
in the Init state. When the virtual IP address and the IP address of the port are consistent, the system
automatically promote the precedence of the routing SWITCH to 255.
70.3.2 Configuring VRRP Authentication Mode
Run the following commands in vlan interface configuration mode.
Command Purpose
vrrp
vrid
authentication
WORD Configures VRRP authentication mode to
simple-text.
no vrrp
vrid
authentication
Resumes the VRRP authentication mode