Configuring Mhsrp - Cisco 3845 - Security Bundle Router Software Manual

Chapter 30 Configuring HSRP
Command
Step 7
show running-config
Step 8
copy running-config
startup-config
Use the no standby [group-number] priority priority [preempt [delay delay]] and no standby
[group-number] [priority priority] preempt [delay delay] interface configuration commands to restore
default priority, preempt, and delay values.
Use the no standby [group-number] track type number [interface-priority] interface configuration
command to remove the tracking.
This example activates a port, sets an IP address and a priority of 120 (higher than the default value),
and waits for 300 seconds (5 minutes) before attempting to become the active router:
Switch# configure terminal
Switch(config)# interface gigabitethernet0/1
Switch(config-if)# no switchport
Switch(config-if)# standby ip 172.20.128.3
Switch(config-if)# standby priority 120 preempt delay 300
Switch(config-if)# end

Configuring MHSRP

To enable MHSRP and load balancing, you configure two routers as active routers for their groups, with
virtual routers as standby routers. This example shows how to enable the MHSRP configuration shown
in Figure
interface so that if a router fails and comes back up, the preemption occurs and restores load balancing.
Router A is configured as the active router for group 1, and Router B is configured as the active router
for group 2. The HSRP interface for Router A has an IP address of 10.0.0.1 with a group 1 standby
priority of 110 (the default is 100). The HSRP interface for Router B has an IP address of 10.0.0.2 with
a group 2 standby priority of 110.
Group 1 uses a virtual IP address of 10.0.0.3 and group 2 uses a virtual IP address of 10.0.0.4.
Router A Configuration
Switch# configure terminal
Switch(config)# interface gigabitethernet0/1
Switch(config-if)# no switchport
Switch(config-if)# ip address 10.0.0.1 255.255.255.0
Switch(config-if)# standby 1 ip 10.0.0.3
Switch(config-if)# standby 1 priority 110
Switch(config-if)# standby 1 preempt
Switch(config-if)# standby 2 ip 10.0.0.4
Switch(config-if)# standby 2 preempt
Switch(config-if)# end
Router B Configuration
Switch# configure terminal
Switch(config)# interface gigabitethernet0/1
Switch(config-if)# no switchport
Switch(config-if)# ip address 10.0.0.2 255.255.255.0
Switch(config-if)# standby 1 ip 10.0.0.3
Switch(config-if)# standby 1 preempt
Switch(config-if)# standby 2 ip 10.0.0.4
Switch(config-if)# standby 2 priority 110
OL-23400-01
Purpose
Verify the configuration of the standby groups.
(Optional) Save your entries in the configuration file.
30-2. You need to enter the standby preempt interface configuration command on each HSRP
Cisco ME 3800X and 3600X Switch Software Configuration Guide
Configuring HSRP
30-9