nanog mailing list archives
Re: Routers vs. PC's for routing - was list problems?
From: Richard A Steenbergen <ras () e-gerbil net>
Date: Thu, 23 May 2002 18:21:46 -0400
On Thu, May 23, 2002 at 05:47:40PM -0400, David Charlap wrote:
64/66 PCI has 4 times as much bandwidth - about 4Gbit/s. Much better than standard PCI, but hard to find on a PC-compatible motherboard, and expensive when you do find it. Enough bandwidth for 10 line-rate 100M Ethernet ports or six line-rate OC-3 ports (in theory, anyway). But not really enough for anything faster (OC-12 or GigE) if you want line-rate forwarding.
Why is this such a hard concept for people to grasp? If you just need to bat around a couple hundred Mbit, a PC based router could work beautifully for you. If you want to design a scalable but efficient system, you use dedicated hardware for the forwarding plane, cheap but powerful PC hardware for the control plane, and an ASIC to look at bytes in the header and come up with a destination interface. But Juniper has done this, so move on. I wish they would put a little more legitimacy on the Olive though, it could be a very useful product. Everything from very small guys who only need to move 100Mbit but who need more stability and policy power than a linsux box and zebra can provide, to the very big guys who could build a very beefy 2GHz box for computationally intensive tasks (like a route reflector). -- Richard A Steenbergen <ras () e-gerbil net> http://www.e-gerbil.net/ras PGP Key ID: 0x138EA177 (67 29 D7 BC E8 18 3E DA B2 46 B3 D8 14 36 FE B6)
Current thread:
- Re: Routers vs. PC's for routing - was list problems?, (continued)
- Re: Routers vs. PC's for routing - was list problems? E.B. Dreger (May 23)
- Re: Routers vs. PC's for routing - was list problems? Brian (May 23)
- Re: Routers vs. PC's for routing - was list problems? Scott Granados (May 23)
- Re: Routers vs. PC's for routing - was list problems? Peter van Dijk (May 24)
- Re: Routers vs. PC's for routing - was list problems? Christopher E. Brown (May 24)
- Re: Routers vs. PC's for routing - was list problems? Alexei Roudnev (May 23)
- Message not available
- Re: Routers vs. PC's for routing - was list problems? Vinny Abello (May 23)
- Re: Routers vs. PC's for routing - was list problems? Alex Rubenstein (May 23)
- Re[2]: Routers vs. PC's for routing - was list problems? E.B. Dreger (May 23)
- Re: Routers vs. PC's for routing - was list problems? David Charlap (May 23)
- Re: Routers vs. PC's for routing - was list problems? Richard A Steenbergen (May 23)
- Re: Routers vs. PC's for routing - was list problems? Alex Rubenstein (May 23)
- Re: list problems? Ralph Doncaster (May 22)
- Re: list problems? Richard A Steenbergen (May 22)
- Re: list problems? Scott Granados (May 22)
- Re: list problems? Andrew Dorsett (May 22)
- Certification or College degrees? Was: RE: list problems? Christopher J. Wolff (May 22)
- RE: Certification or College degrees? Was: RE: list problems? Paul A Flores (May 22)
- RE: Certification or College degrees? Was: RE: list problems? Patrick W. Gilmore (May 22)
- Re: Certification or College degrees? Was: RE: list problems? Paul Vixie (May 22)