Date: Mon, 09 Aug 2004 10:20:33 -0700 From: Eli Dart <dart@nersc.gov> To: sirola@fisica.unige.it Cc: "Nickolay A. Kritsky" <nkritsky@star-sw.com> Subject: Re: retransmissions with bge driver? Message-ID: <20040809172033.3B904F987@gemini.nersc.gov> In-Reply-To: Message from sirola@fisica.unige.it of "Mon, 09 Aug 2004 17:16:33 %2B0200." <87llgo1gvi.fsf@statpro.com>
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--==_Exmh_959901167P Content-Type: text/plain; charset=us-ascii In reply to sirola@fisica.unige.it : > > Hi Nickolay, > > >>>>> "Nickolay" == Nickolay A Kritsky <nkritsky@star-sw.com> writes: > > Nickolay> Hello sirola, Try to switch one of the NICs to > Nickolay> half-duplex mode. This should do the trick. > > thanks for the tip, it works now. What could be the reason for the NIC > working in half-duplex mode? This looks to me like a textbook duplex-mismatch situation. I expect that if you had configured the switch port for full-duplex mode it would have worked just as well if not better. Without knowing what switch you're using it's difficult to say. I have seen a huge number of problems with duplex mismatches over the years. Every vendor has problems, and they are all different problems. In short, if you want to be sure things will work, manually set both the switch and the host to the same speed and duplex settings. After you've done that, test it to make sure. When someone says they can only get 50k to 80k through a FastE, duplex mismatch is the first place I look. In my opinion, duplex negotiation should be taken out and shot.... --eli > Thanks again, > e. > > > -- > Enrico Sirola <sirola@fisica.unige.it> > > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > --==_Exmh_959901167P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (FreeBSD) Comment: Exmh version 2.5 07/13/2001 iD8DBQFBF7JhLTFEeF+CsrMRAvHVAJ43Mv0DO310zgN1qoOKcSWsYyxBegCfeYI8 KuqrN6kAEGWOnArtKC1jizA= =hVJF -----END PGP SIGNATURE----- --==_Exmh_959901167P--
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