FXP driver....

Ted Mittelstaedt tedm at toybox.placo.com
Sun Aug 21 12:15:59 GMT 2005

what about a ping from the 845G to the labbox, does that do
the same thing?


>-----Original Message-----
>From: owner-freebsd-questions at freebsd.org
>[mailto:owner-freebsd-questions at freebsd.org]On Behalf Of Daniel Gonzalez
>Sent: Friday, August 19, 2005 11:12 AM
>To: freebsd-questions at freebsd.org
>Subject: FXP driver....
>> Hi,
>> I've build a new P4 box (1.8Ghz, 512MB mem) based upon a ASUS P4B533VM
>> motherboard. This board has an Intel 845G chipset and onboard 10/100
>> mbit/s LAN (fxp driver).
>> When connected directly to a gateway (in my case an Extreme BD10k) I
>> observe the following behaviour: a ping to the gateway starts around
>> 1ms and slowly increases in steps of .1 or .2ms to around 10ms. Then
>> it suddenly drops back to 1ms and the process starts all over again.
>> I've tried a different NIC (3com, xl driver), new cabling, new
>> switchport and all gives me the same result. My other labbox (a AMD
>> 2000 XP+ with 3com PCI nic) connected to the same router is showing
>> normal latency. This gives me the feeling it's some sort of timing
>> issue on the P4's motherboard itself.
>> Has anyone seen this before? I've searched the archives and found
>> little on this topic. Any tips/hints where I can seach for further
>> clues?
>> Thanks,
>> Arjan
>I haven't used the fxp driver in a while but you can check out
>the man page
>for the driver (man 4 fxp) and it mentions that you can disable
>for media type and speed. I remember reading in an article (I
>can't locate
>the URL) that the autonegotiation between the NIC and
>switch/router can be a
>bottleneck. That would be the easiset thing to check/eliminate.
>Hope that
>Dan Gonzalez
>spammesilly at gmail.com
>IM: signulth
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