Cisco HSRP dual-Machine Hot backup configuration

Cisco's Hot Backup Routing protocol (HSRP) can provide a backup router when workstation A does have a provincial gateway failure, HSRP can create a virtual router with a virtual MAC address and virtual IP address.

Suppose there are two routers bluestudy A and Bluestudy B, two points to the router Bluestudy C:

For Bluestudy A, assume that e0/0 's IP address is 192.168.1.1/24 corresponding to the internal network is 192.168.1.0/24 s0/0 IP address for 192.168.2.1/24 the corresponding external network is 192.168.2.0/24.

For Bluestudy B, assume that e0/0 's IP address is 192.169.1.2/24 corresponding to the internal network is 192.168.1.0/24 s0/0 IP address 192.168.3.1/24 corresponding to the external network is 192.168.3.0/24.

Virtual IP address is 192.168.1.3/24

For Bluestudy C, because with this experiment is not too much contact, temporarily do not explain.

The following is a configuration of two routers, where Bluestudy A is used as the primary router and Bluestudy B as the backup router. The priority for Bluestudy A is 120, and Bluestudy B takes the default priority of 100, which makes Bluestudy a the primary router.

Bluestudy A:

Interface ethernet0/0

Ip Address 192.168.1.1 255.255.255.0

No IP redirects

Standby 1 Priority 120

Standby 1 preempt

Standby 1 IP 192.168.1.3

！

Interface serial0/0

IP address 192.168.2.1 255.255.255.0

No shut

!

Router IGRP 100

Network 192.168.1.0

Network 192.168.2.0

Bluestudy B:

Interface ethernet0/0

Ip Address 192.168.1.2 255.255.255.0

Standby 1 preempt

Standby 1 IP 192.168.1.3

！

Interface serial0/0

IP address 192.168.3.1 255.255.255.0

No shut

!

Router IGRP 100

Network 192.168.1.0

Network 192.168.3.0

As long as the corresponding next to the host gateway set to 192.168.1.3 on it.

such as Cisco's dual-Machine hot backup configuration, if you have questions you can contact the webmaster to discuss.