Gigabit Linux Routers

David Coulson david at
Wed Dec 17 15:14:55 UTC 2008

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").

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