Re: rtl8139 problem
Donald Becker <[email protected]>
| Newsgroups | gmane.linux.drivers.realtek.devel |
|---|---|
| Message-ID | <[email protected]> |
On Sat, 31 Aug 2002, Roberto De Leo wrote: > I have 2 Linux Boxes connected through a twisted class 5 cable. Home-made or commercially made? You likely have mis-paired the cable. The pairing is not the obvious 1+2,3+4,5+6,7+8, it should be 1+2,3+6,4+5,7+8 > Here is my problem: when the NE2k was connected I could tranfer files > from one PC to the other at the regular 10Mbps speed. > Now that the cards are both 10/100 and so they could reach the nice > speed of 100Mbps I get a much worse result: on the path 8129->8139 > I reach at most 1.4Kb/s [measured through a ncftp download], while > on the opposite trajectory the trasfer speed does not pass .4Kb/s!!! This sounds like corrupted packets. You would get much higher speeds even with a duplex mismatch. > How can it be possible that the cards negotiate a 100Mbps speed but then > behave so ridicolously bad? Negotiation takes place at 10baseT speed, and even mis-paired cables will work at that speed. -- Donald Becker [email protected] Scyld Computing Corporation http://www.scyld.com 410 Severn Ave. Suite 210 Second Generation Beowulf Clusters Annapolis MD 21403 410-990-9993