We are an ISP and opening a new data centre soon. Our current data centre uses C4507's with SUPIV's and 7206VXR/NPE-G2's.
Based on the currently CPU and bandwidth usage (CPU averages 45% , with BW around 500Mbs) we know that the 7206/NPE-G'2 will not suffice for our new data centre which will be larger than our current. The NPE-G only supports up to 1Gbs throughput anyway.
We are looking for cost-effect options for BGP/Internet transit routers for our new DC. We need to support full internet routes (135,000 networks and 146,000 subnets based on info from our existing routers) and eBGP prefixes from two providers (around 275,000 prefixes from each) and four iBGP sessions (around 250,000 prefixes from each). We also need to support up to 4Gbs of routing performance for this transit traffic (ideally 5 or 6Gbs to allow for future growth).
The Cisco datasheets always state the max number of routes, they don't state anything about prefixes which I thought should be a consideration.
I know the SUP720-3BXL would fulfil our requirements easily but it's a massive cost. So would the SUP32 be sufficient for our requirements?
Any advice from anyone using the SUP32 in their network for the purpose above would be appreciated.