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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: CIsco 7206VXR w/NPE-G1 Question
> Keep in mind, 72xx is still flow-based, so you need to count *both* shared > fabric capacity (aka PCI buses) and capacity of NPE to establish flows > (aka pps rate). Why do you say it is flow-based? You *do* use CEF, don't you? In which case 7200 with NPE-G1 is a prefix-based architecture, with software forwarding. > NPE-G1 might probably route 3*GE, without any services and if all 3GE are > in a single flow, but will melt down at a face of one-packet-per-flow DDoS > (read: "Nachi" worm) at a far lower rate (I'd be surprised if it sustains > 200kpps DDoS traffic, which can be as low as 150Mbit bandwidth). It's the pps that counts, not whether it is one packet per flow or many. We actually tested NPE-G1 a bit today with small (64 byte) packets, and we reached considerably higher pps numbers. Steinar Haug, Nethelp consulting, [email protected]
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