nanog mailing list archives
Re: scaling linux-based router hardware recommendations
From: Charles N Wyble <charles () thefnf org>
Date: Wed, 28 Jan 2015 08:35:07 -0600
There is no free lunch. If you want " tools that end users can just use" then buy Cisco. Otherwise you need to roll up your sleeves and take the pieces and put them together. Or hire people like me to do it for you. It isn't overly complicated in my opinion. Also you'll find plenty of reasonably priced Linux or BSD integration engineers out there across the globe who are used to doing this sort of thing. Now once you move beyond basic forwarding / high PPS processing (which seems mostly commodity now) and get into say 80gbps (40gbps full duplex) IPS , ip reputation, data loss prevention, SSL MITM, AV... well that requires some very beefy hardware. Can that be done on x86? I doubt it. Tilera seems the way to go here. Newer FPGA boards can implement various CPU architectures on the fly. You also have CUDA. I hadn't seen chelsio, I'm very excited about that. Ill have one in my grubby little hands soon enough. transceivers are still horribly expensive. This is a major portion of the bom cost on any build, no matter what software stack is putting packets onto them. It isn't so simple once you move beyond the 1gbps range and want full feature set. And not in one box I think. Look at https://www.bro.org/ for interesting multi box scaling. On January 28, 2015 7:02:34 AM CST, "Paul S." <contact () winterei se> wrote:
That's the problem though. Everyone has presentations for the most part, very few actual tools that end users can just use exist. On 1/28/2015 午後 08:02, Robert Bays wrote:On Jan 27, 2015, at 8:31 AM, Jim Shankland <nanog () shankland org>wrote:My expertise, such as it ever was, is a bit stale at this point, andmyfigures might be a little off. But I think the general principle applies: think about the minimum number of x86 instructions, and the minimum number of main memory accesses, to inspect a packet header,do arouting table lookup, and enqueue the packet on an outboundinterface. Ican't see that ever getting reduced to the point where a genericservercan handle 40-byte packets at line rate (for that matter, "linerate" isincreasing a lot faster than "speed of generic server" these days).Using DPDK it’s possible to do everything stated and achieve 10Gbpsline rate at 64byte packets on multiple interfaces simultaneously. Add ACLs to the test setup and you can reach significant portions of 10Gbps at 64byte packets and full line rate at 128bytes.Check out Venky Venkatesan’s presentation at the last DPDK Summit forinteresting information on pps/CPU cycles and some of the things that can be done to optimize forwarding in a generic processor environment.http://www.slideshare.net/jstleger/6-dpdk-summit-2014-intel-presentation-venky-venkatesan!DSPAM:54c8de34274511264773590!
-- Sent from my Android device with K-9 Mail. Please excuse my brevity.
Current thread:
- Re: scaling linux-based router hardware recommendations, (continued)
- Re: scaling linux-based router hardware recommendations Paul S. (Jan 27)
- Re: scaling linux-based router hardware recommendations Pavel Odintsov (Jan 27)
- Re: scaling linux-based router hardware recommendations Baldur Norddahl (Jan 27)
- Re: scaling linux-based router hardware recommendations Phil Bedard (Jan 27)
- Re: scaling linux-based router hardware recommendations Paul S. (Jan 27)
- Re: scaling linux-based router hardware recommendations Hugo Slabbert (Jan 27)
- Re: scaling linux-based router hardware recommendations Eduardo Schoedler (Jan 27)
- Re: scaling linux-based router hardware recommendations Jim Shankland (Jan 27)
- Re: scaling linux-based router hardware recommendations Robert Bays (Jan 28)
- Re: scaling linux-based router hardware recommendations Paul S. (Jan 28)
- Re: scaling linux-based router hardware recommendations Robert Bays (Jan 28)
- Re: scaling linux-based router hardware recommendations Charles N Wyble (Jan 28)
- Re: scaling linux-based router hardware recommendations Colin Johnston (Jan 28)
- Re: scaling linux-based router hardware recommendations Mark Tinka (Jan 28)
- Re: scaling linux-based router hardware recommendations Nick Hilliard (Jan 28)
- Re: scaling linux-based router hardware recommendations Baldur Norddahl (Jan 28)
- Re: scaling linux-based router hardware recommendations Eduardo Meyer (Jan 28)
- Re: scaling linux-based router hardware recommendations Adrian Chadd (Jan 28)
- Re: scaling linux-based router hardware recommendations Ray Soucy (Jan 29)