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HSRP Best Config for Enterprise With 5 Routers

Hi I want to know what is the best Design of HSRP when you have 5 Routers for All the Vlans that are distributes through the Entire Campus. And i Have EIGRP Running in the Routers.

The best is to create separate group of Routers?

Or group all the routers together ??

What is the best design for an Enterprise, thinking in Reliable, Rapid Convergence, ETC ??

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Re: HSRP Best Config for Enterprise With 5 Routers

Deciding how may groups you want and how may routers are part of a group will depend on the kind of resiliency you want. In any case, watch out for unicast flooding problems which might result in certain HSRP scenarios used in switched networks. These docs talk about the problem :

http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a00801d0808.shtml

http://www.cisco.com/en/US/tech/tk648/tk362/technologies_tech_note09186a0080094afd.shtml

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