Gigabit Linux Routers

Jeroen Wunnink jeroen at
Thu Dec 18 09:13:03 UTC 2008

This might be of some use, it's a document written by one of the AMS-IX 
engineers, it's a little aged (almost 2 years old) so there should be 
some improvement in the numbers, but it might give you some insight in 
the bottlenecks when pushing a Linux server to it's max (10Gigabit in 
this case)

David Coulson wrote:
> The boxes (3650s) came with Broadcom BCM5708 on-board, but I push most 
> of my traffic over these:
> 1c:00.1 Ethernet controller: Intel Corporation 82571EB Gigabit 
> Ethernet Controller (rev 06)
>        Subsystem: Intel Corporation PRO/1000 PT Dual Port Server Adapter
>        Flags: bus master, fast devsel, latency 0, IRQ 58
>        Memory at c7ea0000 (32-bit, non-prefetchable) [size=128K]
>        Memory at c7e80000 (32-bit, non-prefetchable) [size=128K]
>        I/O ports at 6020 [size=32]
>        Capabilities: [c8] Power Management version 2
>        Capabilities: [d0] Message Signalled Interrupts: 64bit+ 
> Queue=0/0 Enable+
>        Capabilities: [e0] Express Endpoint IRQ 0
>        Capabilities: [100] Advanced Error Reporting
> There are four Intel ports in the boxes, so traffic may or may not 
> stay on the same PCI-X card depending how things are flowing.
> Chris wrote:
>> David: May I ask which NICs you use in the IBM boxes ? I see the Intels
>> recommended by Mike have dual ports on one board (the docs say "Two 
>> complete
>> Gigabit Ethernet connections in a single device • Lower latency due 
>> to one
>> electrical load on the bus").


Met vriendelijke groet,

Jeroen Wunnink,
EasyHosting B.V. Systeembeheerder
systeembeheer at

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