RE: FXP driver....

From: Ted Mittelstaedt (tedm_at_toybox.placo.com)
Date: 08/21/05

  • Next message: Arjan van der Oest: "RE: FXP driver...." 
    To: "Daniel Gonzalez" <spammesilly@gmail.com>, <freebsd-questions@freebsd.org>
Date: Sun, 21 Aug 2005 05:15:47 -0700

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

    Ted

    >-----Original Message-----
    >From: owner-freebsd-questions@freebsd.org
    >[mailto:owner-freebsd-questions@freebsd.org]On Behalf Of Daniel Gonzalez
    >Sent: Friday, August 19, 2005 11:12 AM
    >To: freebsd-questions@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
    >autoselect
    >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
    >helps.
    >--
    >Dan Gonzalez
    >spammesilly@gmail.com
    >IM: signulth
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  • Next message: Arjan van der Oest: "RE: FXP driver...."