Question

Using HSRP/VRRP for redundant Cisco 2600 Routers

Asked by: ryanwhalen

We have 2 T1 lines currently connected to a Cisco 2620 router.  CEF is used to loadbalance between the two circuits.

What I would like to do is do HSRP/VRRP between the current 2620 and another 2620, so that if the primary went down, the secondary would take over.  However, I'm not sure how to physically connect that, as each WIC in the 2620 is connected via a cat5 cable to the Demarc point.

Would I need some special equipment to split the cat5 cables from the 2620's to the demarc point?

Thanks in advance!

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Asked On
2005-12-23 at 12:00:26ID21674560
Tags

vrrp

,

2600

,

hsrp

,

cisco

Topic

Network Routers

Participating Experts
1
Points
500
Comments
3

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Answers

 

by: lrmoorePosted on 2005-12-23 at 13:07:11ID: 15544540

The problems with doing this are twofold
1) no, you can't split the T1's. One T1 per router if you want two routers
2) HSRP will not load-balance, it is for failover only

Best bet may just be to have the 2nd router fully loaded, configured, ready to go for a manual swapover of the T1 cables in event of failure of the primary 2620 router. I must say that I've never seen one of these suffer from a total hardware failure that didn't give some warnings/indicators well enough in advance to conduct a manual swap out, then get the primary router replaced/checked out...


 

by: ryanwhalenPosted on 2005-12-23 at 13:19:03ID: 15544583

Thanks.

I'm not looking to loadbalance with HSRP (Thats why we are using CEF).

Basically i want the primary router configured as it is now (2-T1's loadbalanced with CEF) and then add a secondary backup router also configured with both T1's ready to go...it will not be doing anything other than sending the keepalive packets back and forth to the primary router.  If the primary goes down, then the backup takes over.

 

by: lrmoorePosted on 2005-12-23 at 13:21:16ID: 15544592

Then you would need 2 more T1 lines. I don't think that was part of your plan.
Again, you simply cannot "split" the T1 lines to work with both/either router.

20120131-EE-VQP-002

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