nanog mailing list archives
Re: Software router state of the art
From: "William Herrin" <herrin-nanog () dirtside com>
Date: Wed, 23 Jul 2008 12:07:23 -0400
On Wed, Jul 23, 2008 at 11:24 AM, <Valdis.Kletnieks () vt edu> wrote:
On Wed, 23 Jul 2008 02:52:56 PDT, Zed Usser said:There's been some discussion on the list regarding software routersThe performance of "software routers" has always had a hardware component. Basically, for the vast majority of them, take your PCI bus bandwidth, count how many times a packet has to cross it, and do the math. You can't forward more than that much traffic no matter *what* software you run on that box. If that number falls short, stop right there and look for some box of different design that has the required backplane bandwidth.
The Endace DAG cards claim they can move 7 gbps over a PCI-X bus from the NIC to main DRAM. They claim a full 10gbps on a PCIE bus. Regards, Bill Herrin -- William D. Herrin ................ herrin () dirtside com bill () herrin us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004
Current thread:
- Re: Software router state of the art, (continued)
- Re: Software router state of the art Aaron Glenn (Jul 28)
- Re: Software router state of the art Eugeniu Patrascu (Jul 29)
- RE: Software router state of the art michael.dillon (Jul 28)
- Re: Software router state of the art Seth Mattinen (Jul 28)
- Re: Software router state of the art Rev. Jeffrey Paul (Jul 28)
- Re: Software router state of the art Andrew D Kirch (Jul 28)
- Re: Software router state of the art Seth Mattinen (Jul 28)
- Re: Software router state of the art Joe Greco (Jul 28)
- Re: Software router state of the art Bill Nash (Jul 28)
- Re: Software router state of the art Florian Weimer (Jul 28)
- Re: Software router state of the art Naveen Nathan (Jul 23)
- Re: Software router state of the art Christopher Morrow (Jul 23)
- Re: Software router state of the art Wes Young (Jul 23)