nanog mailing list archives
RE: CIsco 7206VXR w/NPE-G1 Question
From: sthaug () nethelp no
Date: Fri, 30 Jan 2004 18:30:27 +0100
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, sthaug () nethelp no
Current thread:
- RE: CIsco 7206VXR w/NPE-G1 Question, (continued)
- RE: CIsco 7206VXR w/NPE-G1 Question Michel Py (Jan 30)
- RE: CIsco 7206VXR w/NPE-G1 Question David Luyer (Jan 30)
- Re: CIsco 7206VXR w/NPE-G1 Question Rubens Kuhl Jr. (Jan 30)
- Re: CIsco 7206VXR w/NPE-G1 Question David Luyer (Jan 30)
- RE: CIsco 7206VXR w/NPE-G1 Question Luke Starrett (Jan 31)
- RE: CIsco 7206VXR w/NPE-G1 Question sthaug (Jan 31)
- RE: CIsco 7206VXR w/NPE-G1 Question David Luyer (Jan 31)
- RE: CIsco 7206VXR w/NPE-G1 Question David Luyer (Jan 30)
- RE: CIsco 7206VXR w/NPE-G1 Question Michel Py (Jan 30)
- RE: CIsco 7206VXR w/NPE-G1 Question alex (Jan 30)
- RE: CIsco 7206VXR w/NPE-G1 Question sthaug (Jan 30)
- RE: CIsco 7206VXR w/NPE-G1 Question alex (Jan 30)
- Re: CIsco 7206VXR w/NPE-G1 Question matt (Jan 30)
- Re: CIsco 7206VXR w/NPE-G1 Question Rubens Kuhl Jr. (Jan 30)
- RE: CIsco 7206VXR w/NPE-G1 Question Lincoln Dale (Jan 30)
- RE: CIsco 7206VXR w/NPE-G1 Question alex (Jan 30)
- Re: CIsco 7206VXR w/NPE-G1 Question Petri Helenius (Jan 30)
- RE: CIsco 7206VXR w/NPE-G1 Question Alex Yuriev (Jan 30)
- Re: CIsco 7206VXR w/NPE-G1 Question Petri Helenius (Jan 30)