User's Manual

Table Of Contents
498
Users Manual of CS-6306R
standby 1 ip 171.16.6.100 255.255.255.0
standby 1 trackl Serial0
standby 2 preempt
standby 2 ip 171.16.6.200 255.255.255.0
standby 2 track Serial0
standby 2 priority 95
The following is the R2 configuration:
Configure two HSRP groups on interface Ethernet 0. The virtual IP of group 1 is 171.16.6.100 and the
privilege of group1 is 100, so R2 is the standby router of group1.
The virtual IP of group 2 is 171.16.6.200 and the default privilege of group2 is 100. Because the privilege of
group2 on R2 is 95, R2 is then the active router of group2.
R2 HSRP Configuration
Interface Ethernet0
ip address 171.16.6.6 255.255.255.0
standby 1 preempt
standby 1 ip 171.16.6.100 255.255.255.0
standby 1 trackl Serial0
standby 1 priority 95
standby 2 preempt
standby 2 ip 171.16.6.200 255.255.255.0
standby 2 track Serial0
Then set the gateways of the host in network segment 172.16.6.0/24 to 172.16.6.100 and 172.16.6.200
respectively. In this case, the load balance then functions.
Configuring VRRP 49.3
49.3.1 VRRP Overview
The Virtual Router Redundant Protocol (VRRP) can take several routers as a router backup group, providing
network users a virtual-gateway router. It is useful to users when the router detection protocol is not supported.
This is because it cannot automatically switch to a new NMS router when the selected router is reinstalled or
breaks down.
VRRP provides a virtual MAC address and a virtual IP which is shared by a group of VRRP-running routers.
VRRP will select a router from this router group to server as a main router. The main router receives and
forwards the packets whose destination address is the virtual MAC address of the backup group. When VRRP
detects the invalidity of the main router, the VRRP routers will select one as a new main router to obtain the
MAC and the IP of the backup group.
The VRRP-running main router transmits the Advertise packets based on the Sock Raw multicast, while the
standby routers receive these packets. The standby routers can serve as the main router through their Timer