HSRP config

Unanswered Question
Jul 8th, 2007

i have tow cisco routers and iwant to configure hsrp on this router.But my problem is how to configure this?

topology is like below

Two cissco routers which connected to two differnet ISP

Internal Lan access internet through Fortigate firewall and fortigate firewall connected to two cisco routers.I configure Public address on two wan ports of fortigate firewall.

Is it possible to configure HSRP on differnt Ip subneting?

I have this problem too.
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a.shaik Mon, 07/09/2007 - 04:09


Could you please add network diagram for your problem for a better understanding.



You can setup multiple HSRP groups on the same interface in different subnets much the same way you can setup secondary ip addresses.

If you had two subnets and that you wanted to setup hsrp for on the same router interface you could do the following:

Router 1:

ip address

ip address secondary

standby 1 ip

standby 2 ip

Router 2:

ip address

ip address secondary

standby 1 ip

standby 2 ip

You can change the priority, timers and prempt settings of each group independently allowing Router 1 to be active in group 1 and router 2 to be active in group 2 at the same time. The following is a case study on HSRP: http://www.cisco.com/en/US/tech/tk1330/technologies_design_guide_chapter09186a008066670b.html

For more information I suggest the BCMSN self study guide from Cisco Press

vinay_verma80 Tue, 07/10/2007 - 04:59


yes u can configure HRSP with 2 diffrent ip subnet by 2 ways

1. make 2 sub interfaces and use hsrp on that , use also vlan if required

2. as define in this forom ,

but why do u require to diffrent ip to connect router give the ip given by the isp to serial interface and use private ip address on router lan interface as well as on firewall , so that is the way u can reduce the complexcity


amit_kulshrestha_2 Mon, 07/16/2007 - 20:05

Hi San,

I totally agree with vinay,actually why you need different ip ,you can configure in the way what vinay has told.


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