scaling linux-based router hardware recommendations

David bass davidbass570 at
Tue Jan 27 01:07:11 UTC 2015

I'm also in the research stage of building our own router.  I'm interested in reading more if you can post links to some of this research and/or testing. 


Sent from my iPad

> On Jan 26, 2015, at 6:45 PM, Phil Bedard <bedard.phil at> wrote:
> Kind of unsurprisingly, the traditional network vendors are somewhat at 
> the forefront of pushing what an x86 server can do as well.  Brocade 
> (Vyatta), Juniper, and Alcatel-Lucent all have virtualized routers using 
> Intel's DPDK pushing 5M+ PPS at this point.  They are all also tweaking 
> what Intel is providing, and they are the ones with lots of software 
> developers with a lot of hardware and network programming experience.  
> ALU claims to be able to get 160Gbps full duplex through a 2RU server with 
> 16x10G interfaces and two 10-core latest-gen Xeon processors.  Of course 
> that's probably at 9000 byte packet sizes, but at Imix type traffic it's 
> probably still pushing 60-70Gbps.  They have a demo of lots of them in a 
> single rack managed as a single router pushing Tbps.  
> A commerical offering you are going to pay for that kind of performance 
> and the control plane software.  Over time though you'll see the DPDK type 
> enhancements make it into standard OS stacks.   Other options include 
> servers with integrated network processors or NPs on a PCI card, there is 
> a whole rash of those type of devices out there now and coming out.  
> Phil 
>> On 1/26/15, 22:53, "micah anderson" <micah at> wrote:
>> Hi,
>> I know that specially programmed ASICs on dedicated hardware like Cisco,
>> Juniper, etc. are going to always outperform a general purpose server
>> running gnu/linux, *bsd... but I find the idea of trying to use
>> proprietary, NSA-backdoored devices difficult to accept, especially when
>> I don't have the budget for it.
>> I've noticed that even with a relatively modern system (supermicro with
>> a 4 core 1265LV2 CPU, with a 9MB cache, Intel E1G44HTBLK Server
>> adapters, and 16gig of ram, you still tend to get high percentage of
>> time working on softirqs on all the CPUs when pps reaches somewhere
>> around 60-70k, and the traffic approaching 600-900mbit/sec (during a
>> DDoS, such hardware cannot typically cope).
>> It seems like finding hardware more optimized for very high packet per
>> second counts would be a good thing to do. I just have no idea what is
>> out there that could meet these goals. I'm unsure if faster CPUs, or
>> more CPUs is really the problem, or networking cards, or just plain old
>> fashioned tuning.
>> Any ideas or suggestions would be welcome!
>> micah

More information about the NANOG mailing list