[c-nsp] 6500 w/sup32 as BGP edge router?

[Rutger Bevaart]

hello list,

i'm currently evaluating possibilities for an edge router with the
following requirements,

- able to handle at least three full BGP4 feeds (~160K routes);
- future proof to implement IPv6 in the coming two years, including full
feeds;
- relative low bandwidth requirements (10 - 40Mbps);
- two Gbit ethernet ports to local colo and server LAN(s);
- most connections will be ethernet, possibly one or two STM1 / OC3;
- resistent against DDoS attacks - able to handle a few hundred Mbits of
DDoS traffic until we can resolve it with upstream peers;
- low cost;

the options i've covered so far include,

- 7204VXR / 7206VXR using NPE400 or NPE-GE;
- 7301 or 7304-NSR;
- 6503 with Sup32;

right now i have the feeling that the 6500 route would cost-wise be a very
smart choice. the sup32 offers 15Mpps (cisco spec) that should cover the
DDos part. the embedded 8 gbit ethernet ports come in handy for the
upstreams and downstream connections. adding a flexwan slot will bring in
the STM1 connectivity.

on the other hand, it is no a pure routing platform such as a 7304 with
NSE (that does 3.5Mpps according to cisco).

this has probably been discussed to death (pardon my ignorance) but how
would the 6503 scenario stand against the general routing platforms such
as the 7304?

regards
Rutger Bevaart

URL:
http://www.cisco.com/en/US/products/hw/modules/ps2797/products_data_sheet0900aecd801c5cab.html