if_bge with <Broadcom BCM5703 Gigabit Ethernet, ASIC rev. 0x1002>(was: Re: Strange things on GBit / 1000->100 /net.inet.tcp.inflight.* )

[Andre Oppermann]

"Raphael H. Becker" wrote:
> 
> On Sat, Sep 18, 2004 at 01:16:44AM +0200, Raphael H. Becker wrote:
> > On Sat, Sep 18, 2004 at 12:16:20AM +0200, Andre Oppermann wrote:
> > > Would you mind trying a 5.3 to 5.3 transfer but the target 5.3 box forced to
> > > only 100Mbit full-duplex?  Same statistics again.
> >
> > Sorry, ifconfig is not possible now. See PM.
> > I may retest with physical access (without ssh) next days, if needed.
> 
> Today I had some time for testing AND physical access ...
> 
> With bge0 bound to 100baseTX / full-duplex the transfer breaks down to
> <100kBytes/sec, with 1000byseTX its about 250-350kBytes/sec, should be
> ~10MBytes/sec
> 
> ifconfig bge0 down
> ifconfig bge0 media ...
> ifconfig bge0 up
> 
> I will do some more and detailed testing next time I'm in our data
> center, including the netstat-output etc.
> 
> Hmm. if_bge buggy?
> But, same machine on a FE-Switich worked perfectly (with 100MBit).
-snip-
> Any idea?

Could you do a transfer of about 5MB and capture the entire TCP session
with tcpdump on the source *and* target machine at the same time?  I'll
have a look at it to find out why TCP is unable to open the window.

 tcpdump -n -i bge0 -p -w dump_source "tcp host 1.2.3.4"

And then make the two files available somewhere I can download them.

-- 
Andre