Question

CONFIGURING HSRP with four CISCO 2811 routers

Asked by: isltt

Hello to everyone,

I have the following configuration:
                                                                    _______
                                                                    |SWITCH|
                                                                    -----------
                                                                           |
                                                                           |
                                                    HSRP ADDRESS 172.16.3.4

            eth0/1   172.16.3.5/255.255.255.248            eth0/1     172.16.3.6/255.255.255.248
                      | CISCO2811_1 |                                                     | CISCO2811_2 |
            eth0/0   172.16.4.1/255.255.255.248            eth0/0     172.16.5.1/255.255.255.248
                                   |                                                                       |
                                   |                                                                       |
                                   |                                                                       |
                             ISP A                                                                 ISP B
                                   |                                                                       |
                                   |                                                                       |
                                   |                                                                       |
            eth0/0   172.16.4.2/255.255.255.248            eth0/0     172.16.5.2/255.255.255.248
                      | CISCO2811_3 |                                                     | CISCO2811_4 |
            eth0/1   172.16.6.2/255.255.255.248            eth0/1     172.16.6.3/255.255.255.248

                                                    HSRP ADDRESS 172.16.6.1
                                                                          |
                                                                    ___|____
                                                                    |SWITCH|
                                                                    -----------
CISCO2811_1
interface FastEthernet0/0
 description ISPA
 ip address 172.16.4.1 255.255.255.248
 duplex auto
 speed auto
!
interface FastEthernet0/1
 description WAN1
 ip address 172.16.3.5 255.255.255.248
 duplex auto
 speed auto
 standby priority 110
 standby 1 ip 172.16.3.4
 standby 1 preempt

CISCO2811_2
interface FastEthernet0/0
 description ISPB
 ip address 172.16.5.1 255.255.255.248
 duplex auto
 speed auto
!
interface FastEthernet0/1
 description WAN1
 ip address 172.16.3.6 255.255.255.248
 duplex auto
 speed auto
 standby 1 ip 172.16.3.4
 standby 1 priority 105
 standby 1 preempt

CISCO2811_3
interface FastEthernet0/0
 description ISPA
 ip address 172.16.4.2 255.255.255.248
 duplex auto
 speed auto
!
interface FastEthernet0/1
 description WAN2
 ip address 172.16.6.2 255.255.255.248
 duplex auto
 speed auto
 standby 1 ip 172.16.6.1
 standby 1 priority 110
 standby 1 preempt

CISCO2811_4
interface FastEthernet0/0
 description ISPB
 ip address 172.16.5.2 255.255.255.248
 duplex auto
 speed auto
!
interface FastEthernet0/1
 description WAN2
 ip address 172.16.6.3 255.255.255.248
 duplex auto
 speed auto
standby 1 ip 172.16.6.1
 standby 1 priority 105
 standby 1 preempt

All routers have the following configuration
router eigrp 1
      network 172.16.0.0

The issue here is that if I turn off CISCO2811_1 in first location the HSRP switches over properly to CISCO2811_2 but no communcation between WAN1 and WAN2 takes place. If I then switch off CISCO2811_3, CISCO2811_4 takes over HSRP address and everthing works fine.
Can anyone assist, am i missing something ?

This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.

Subscribe now for full access to Experts Exchange and get

Instant Access to this Solution

  • Plus...
  • 30 Day FREE access, no risk, no obligation
  • Collaborate with the world's top tech experts
  • Unlimited access to our exclusive solution database
  • Never be left without tech help again

Subscribe Now

Asked On
2007-11-06 at 20:08:53ID22943820
Tags

hsrp

,

2811

,

cisco

,

configuring

,

router

Topics

Network Routers

,

Miscellaneous Networking

,

Network Switches & Hubs

Participating Experts
2
Points
500
Comments
9

Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.

  • "The time we save is the biggest benefit of Experts Exchange to Warner Bros. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange." Mike Kapnisakis, Warner Bros.
  • "Our team likes having a resource that is more secure than just using Google and most experts using this service really know their stuff. It's nice to look here first versus using Google." Dayna Sellner, Lockheed Martin
  • "Anytime that I've been stumped with a problem, 9 out of 10 times Experts Exchange has either the accepted solution or an open discussion of the potential solution to the problem." Kenny Red, eBay Inc.

See what Experts Exchange can do for you.

Got a question?

We've got the answer.

Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.

Screenshot of Experts Exchange Knowledgebase

Need individual assistance?

Our experts are ready to help.

If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.

Screenshot of Experts Exchange Knowledgebase

Want to learn from the best?

Read articles from industry experts.

Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.

Screenshot of an Article

Working on a long term project?

Store your work and research.

Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.

Screenshot of Experts Exchange Knowledgebase

Access the answers to your technology questions today.

Subscribe Now

30-day free trial. Register in 60 seconds.

What Makes Experts Exchange Unique?

Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.

Trusted by the world's most respected brands.

image of each brand's logo

Faithfully serving IT professionals since 1996.

Experts Exchange Logo

Try it out and discover for yourself.

Subscribe Now

30-day free trial. Register in 60 seconds.

Related Solutions

  1. HSRP and EIGRP
    I have 2 routers, each with a T1 going to a remote office. The routers are running HSRP. One is active, and the bandwidth statement on its serial (T1) link is set to 512. The other router is standby, and its serial link (T1) is set to 768. If I ping the remote office, I w...
  2. hsrp
    can someone help with an explanation of hsrp and an example of how its configured? any info or good weblinks would be great thanks
  3. HSRP will not automatically failover to the standby router
    2 routers in Chicago, Illinois, 2 routers in Wood Dale, Illinois. both sites are setup for HSRP. When one of the T1 lines goes down fail over does not happen. We just have no traffic flowing inbound or outbound. I have to manually change the priority on both side for traf...
  4. HSRP
    I have two ISPs, 1 is the primary and 2 is the back up. I have two routers, one for each ISP, A connects to 1 and B connects to 2. Router C chooses which router (A or B) to send the traffic to. Right now, if ISP 1 goes down, i manually add a route to send traffic to router ...
  5. Re: HSRP and EIGRP configuration
    Hi Guys, Please I need to produce a config for the attached diagram. My requirements are as follow 1. To use the two routers as resiliency/redundancy 2. To use HSRP for redundancy 3. To use EIGRP as routing protocol Please your support will be highly appreciated. Thank...
  6. overview of HSRP
    Can somebody give me a tutorial for HSRP that is not a quick Google search (done that). I am looking for a What can it do and not do as well as best practices for running HSRP.

Free Tech Articles

  1. WARNING: 5 Reasons why you should NEVER fix a computer for free.
    It is in our nature to love the puzzle. We are obsessed. The lot of us. We love puzzles. We love the challenge. We thrive on finding the answer. We hate disarray. It bothers us deep in our soul. W...
  2. SCCM OSD Basic troubleshooting
    SCCM 2007 OSD is a fantastic way to deploy operating systems, however, like most things SCCM issues can sometimes be difficult to resolve due to the sheer volume of logs to sift through and the dispe...
  3. Migrate Small Business Server 2003 to Exchange 2010 and Windows 2008 R2
    This guide is intended to provide step by step instructions on how to migrate from Small Business Server 2003 to Windows 2008 R2 with Exchange 2010. For this migration to work you will need the fo...
  4. Create a Win7 Gadget
    This article shows you how to create a simple "Gadget" -- a sort of mini-application supported by Windows 7 and Vista. Gadgets can be dropped anywhere on the desktop to provide instant information, ...
  5. Outlook continually prompting for username and password
    There have been a lot of questions recently regarding Outlook prompting for a username and password whilst using Exchange 2007. There are a few reasons why this would happen and I will try to cover t...
  6. Backup Exchange 2010 Information Store using Windows Backup
    There seems to be quite a lot of confusion around the ability to backup Exchange 2010 using the built in Windows Backup feature. This stems from the omission of this feature prior to Exchange 2007 s...

Cloud Class Webinars

  1. Avoiding Bugs in Microsoft Access
    Alison Balter takes and in-depth look at avoiding bugs in Access. In this webinar you will learn about using the immediate window to debug your applications, invoking the debugger, using breakpoints to troubleshoot, stepping through code, setting the next statement to execute, ...
  2. Top 10 Best New Features in Visio 2010
    Scott Helmers gives live demonstrations of the top 10 new features in Visio 2010. This webinar will teach you how to create compelling diagrams by adding shapes to the page with a single click, linking the shapes in a diagram to data in Excel (or SQL Server, or SharePoint), ...
  3. IT Consultant Business Secrets Revealed
    Michael Munger, Experts Exchange tech pro and IT consultant, pulls back the curtain on his very successful businesses and answers question on every IT consultant and business owner should know about. He shares secrets on what he did to solve the 5 most common problems in IT, ...
  4. Disaster Recovery and Business Continuity
    Quest CTO, Mike Billon, gives an overview of the steps involved in building a dunamic disaster recovery plan. Through case studies and an examination of software/hardware tooles for monitoring and testing, you'll gain a better understandin of where you are, where you want ...
  5. Organize Your Visio Diagrams with Containers and Lists
    Scott Helmers uses cross functional flowcharts, wireframe diagrams, data graphic legends and seating charts to teach you: how to ustilize all three new structured diagram components in Visio 2010, the best practices for organizeing shapes in previous version of Visio, how to organize ...
  6. How to Us Objects, Properties, Events and Methods in Microsoft Access
    Alison Dalter gives an in-depbth look at objects, properties, events and methods in Microsoft Access. In this webinar you will learn about using the object browser, referring to objects, working with properties and methods, working with object variables, understanding the ...

Join the Community

Give a Little. Get a Lot.

Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.

Join the Community

Answers

 

by: lrmoorePosted on 2007-11-07 at 04:00:57ID: 20231278

I'm assuming that the ISP links are point-to-point.
What are you using for dynamic routing?
EIGRP? OSPF?

 

by: donjohnstonPosted on 2007-11-07 at 04:07:39ID: 20231301

It sounds like router 3 can't reach the 3.0 network and is not advertising that. When you turn off R1, is the 3.0 network in R1's routing table?

Also, you may want to configure object tracking.

http://www.cisco.com/en/US/products/hw/switches/ps5023/products_configuration_guide_chapter09186a00808c7369.html

That way when a path is lost, the active router will decrement it's priority letting the standby router take over.

 

by: islttPosted on 2007-11-07 at 04:13:41ID: 20231321

The connection is actually a Private Line link between sites. We are using static routes on the routers...

 

by: donjohnstonPosted on 2007-11-07 at 04:20:50ID: 20231364

Ah... That explains it. With a static route, R3 will send traffic to the 3.0 network to R1. With R1 dead, you've got no path.  I was under the impression you were running EIGRP.

 

by: islttPosted on 2007-11-07 at 04:55:21ID: 20231522

These are the routes on all of the routers

CISCO2811_1
ip classless
ip route 0.0.0.0 0.0.0.0 172.16.3.1
ip route 172.16.6.0 255.255.255.248 172.16.4.2
ip route 172.16.22.0 255.255.255.0 172.16.4.2
ip route 192.168.0.0 255.255.255.0 172.16.3.1
ip route 192.168.2.0 255.255.255.0 172.16.4.2
ip route 192.168.8.0 255.255.255.0 172.16.4.2
ip route 192.168.40.0 255.255.255.0 172.16.4.2
ip route 192.168.50.0 255.255.255.0 172.16.4.2
ip route 192.168.60.0 255.255.255.0 172.16.4.2
ip route 192.168.70.0 255.255.255.0 172.16.4.2
ip route 192.168.75.0 255.255.255.0 172.16.4.2

CISCO2811_2

ip classless
ip route 0.0.0.0 0.0.0.0 172.16.3.1
ip route 172.16.6.0 255.255.255.248 172.16.5.2
ip route 172.16.22.0 255.255.255.0 172.16.5.2
ip route 192.168.0.0 255.255.255.0 172.16.3.1
ip route 192.168.2.0 255.255.255.0 172.16.5.2
ip route 192.168.8.0 255.255.255.0 172.16.5.2
ip route 192.168.40.0 255.255.255.0 172.16.5.2
ip route 192.168.50.0 255.255.255.0 172.16.5.2
ip route 192.168.60.0 255.255.255.0 172.16.5.2
ip route 192.168.70.0 255.255.255.0 172.16.5.2
ip route 192.168.75.0 255.255.255.0 172.16.5.2
!

CISCO2811_3
ip classless
ip route 0.0.0.0 0.0.0.0 172.16.5.1
ip route 172.16.3.0 255.255.255.248 172.16.5.1
ip route 172.16.22.0 255.255.255.0 172.16.6.4
ip route 192.168.0.0 255.255.255.0 172.16.5.1
ip route 192.168.2.0 255.255.255.0 172.16.6.4
ip route 192.168.8.0 255.255.255.0 172.16.6.4
ip route 192.168.40.0 255.255.255.0 172.16.6.4
ip route 192.168.50.0 255.255.255.0 172.16.6.4
ip route 192.168.60.0 255.255.255.0 172.16.6.4
ip route 192.168.70.0 255.255.255.0 172.16.6.4
ip route 192.168.75.0 255.255.255.0 172.16.6.4
!

CISCO2811_4

ip classless
ip route 0.0.0.0 0.0.0.0 172.16.4.1
ip route 172.16.3.0 255.255.255.248 172.16.4.1
ip route 172.16.22.0 255.255.255.0 172.16.6.4
ip route 192.168.0.0 255.255.255.0 172.16.4.1
ip route 192.168.2.0 255.255.255.0 172.16.6.4
ip route 192.168.8.0 255.255.255.0 172.16.6.4
ip route 192.168.40.0 255.255.255.0 172.16.6.4
ip route 192.168.50.0 255.255.255.0 172.16.6.4
ip route 192.168.60.0 255.255.255.0 172.16.6.4
ip route 192.168.70.0 255.255.255.0 172.16.6.4
ip route 192.168.75.0 255.255.255.0 172.16.6.4

 

by: donjohnstonPosted on 2007-11-07 at 05:01:54ID: 20231566

The problem (in this case) with static routes is that when you lose R1, R3 has no way to get to the 3.0 network. This why we use routing protocols. They're able to fail over when a neighboring router (or link) fails.

 

by: lrmoorePosted on 2007-11-07 at 05:24:21ID: 20231731

Ditto. You need to run a dynamic routing protocol that is link aware, like OSPF or EIGRP and get rid of all of the static routes, and because these are Ethernet links, you may need to combine the dynamic routing with object tracking for true dynamic resiliency.


 

by: islttPosted on 2007-11-07 at 13:48:47ID: 20236773

I got it working somewhat by entering the command

standby 1 track fastethernet0/0 on Routers1 and 2 and on 3 and 4...

The problem is that this assumes that the link actually fails where this may not be the case because each service provider plugs the router directly into the a switch (no serial 0 CSU/DSU to go down).

Question.....can i track an ip address....?

 

by: donjohnstonPosted on 2007-11-07 at 13:57:44ID: 20236875

Yes. Like I said, do object tracking.

20120131-EE-VQP-002

3 Ways to Join

30-Day Free Trial

The Experts

98% positive feedback on 31,087 answers since March 2000. angeliii is a Microsoft Most Valuable Professional for his work with MS SQL Server & Develoment.

He has also proven his knowledge of Visual Basic Programming, PHP Scripting and Oracle Databases.

The Experts

97% positive feedback on 10,752 answers since July 2000. lrmoore has more than 18 years experience in the networking industry.

The six-time Mircosoft MVPs specialties include firewalls, virtual private networking, and network management.

Testimonials

"...and excellent source for support... Kind of like having your very own IT dept." Electriciansnet

Testimonials

"I was apprehensive at signing up at first. However... it has already made my life as an IT administrator much easier." JaCrews

Testimonials

"WOW! You guys have great, active, and knowledgeable people on here." moore50

Business Clients

Business Clients

In the Press

"If you’ve got a question... Experts Exchange can supply an answer.”

In the Press

"...an invaluable aid for both IT professionals and those who require tech support."

In the Press

"where IT professionals provide quick answers on just about any topic"

Business Account Plans

Loading Advertisement...