We currently have a pair of internet links one is 100Mb and one 10mb using hsrp between a pair of 2821 routers and the same isp. We're moving to multiple ISP's and dropping the 10Mb link to have 2 x 100Mb and 1 x 1Gb link from 3 providers and using BGP.
We want to run multiple VPN sessions from customers and between our sites plus hosting some remote backup solutions which use circa 100Mb and may burst to 400Mb overnight for periods.
Having had discussions with various providers we've been recommended difering routers from each provider, starting with smaller 3845 going to 7206 and then ASR 1002.
Can someone quantify how we should look to size a router. We'd like limited routing information for UK based destinations and then defaults to elsewhere if thats possible.