User's Manual

Table Of Contents
497
Users Manual of CS-6306R
standby [group-number] preempt
[delaydelay]
Configure hsrp preempt. If local router's
priority is larger than active router, local
router should try to replace the active
router.
Configure hsrp preempt delay timer.Local
router should replace active router after
preempt delay timer.
standby [group-number] tracktype
number [interface-priority]
Configure hsrp group tracking interface
list.If the tracking interface is
failed ,HSRP priority value decreased.
standby [group-number]
authenticationstring
Configure the HSRP group authentication
string to authenticate hsrp packet
validation.
49.2.4 Example of Hot Standby Configuration
The following is a typical HSRP configuration example. The host in network segment 171.16.6.0/24 access
server 1 and server 2 through R1/R2/R3. R1 and R2 backups each other in network segment 172.16.2.0/24.
Both R1 and R2 realize the load-share function.
Figure 2-1 HSRP configuration
The following is R1 configuration:
First configure two HSRP groups on port Ethernet0, of which the virtual IP of group 1 is 171.16.6.100. The
value of the default privilege level is 100, while the value of the privilege of group1 on R2 is 95. Therefore, R1
is the active router of group1. If the s0 protocol is down, the privilege of group 1 decreases to 90 by 10. In this
case, the privilege of group1 on R2 is higher than that of group1 on R1. Because group1 on R2 has the
occupation mechanism, group 1 on R2 then automatically switches to the active state and group1 of R1
switches to the standby state.
The virtual IP of group2 is 171.16.6.200 and the privilege of group 2 is 95. Because the default value of the
privilege of group 2 on R2 is 100, group 2 of R2 is then the standby router.
R1 HSRP Configuration
Interface Ethernet0
ip address 171.16.6.5 255.255.255.0
standby 1 preempt