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Need help with a major Decision.

need help choosing which class of router to use for a special network design I have to do. I need a some thing with a mixture of both Long and short reach fiber SFP interfaces and I need to have a few high Density Cards.

I Can't seem to come to a decent decision on my own. I may need a few 10G ethernet connections as well. (2 at max).

I have listed the requirements below for my required services and I believe that the cisco 4500 E series would fit well but I need help picking the proper Line cards.

Requirements,

Layer 3 external Routing / switching.

Layer 2/3 internal routing / Switching

Port Based VLAN and VLAN routing

NAT Both Dynamic (outgoing) and Static (incoming)

OSPF Networking (Multi Area)

BGP Routing (to be redistributed into the OSPF network)

I will have a number of Ethernet (5 100meg Fiber lines currently Scalable to 1g)connections coming in From Different POPs for External (internet) Access. Each with there own /30 range and a small number of Routable /26 subnets for each link.

I will have at least 7 Private subnets behind this that will be NAT'd and routed internally across to our other offices.

This will be a hybrid Core/Edge Switch And I need Redundancy built in.

Any help would be greatly appreciated.

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