Re: correct setting for 100Mbps full-duplex on 3Com 905C
Donald Becker <[email protected]>
| Newsgroups | gmane.linux.drivers.vortex.devel |
|---|---|
| Message-ID | <[email protected]> |
On Wed, 15 Jan 2003, [iso-8859-15] Jürgen Sandner wrote: > We use 3COM 905B and 905C Network Adaptors at work, connected to CISCO > Catalyst 3500 Switches. > Autosensing doesn't work (data loss, errors), but not only under Linux, but > also under Windows NT. Autonegotiation, or speed autosensing? My guess is that the switch is set to forced-full-duplex, which is a flawed concept. Read http://www.cisco.com/warp/public/473/46.html > We have to configure the Cards to 100 Mbps full-duplex or 10 Mbps > full-duplex, and the switch port of course the same. If your switch has broken autonegotiation, set it to 100Mbps, half duplex. Non-autonegotiation Ethernet *is* half duplex. Setting forced-full duplex is non-standard. > What is the correct way to this under Linux? > I checked http://www.scyld.com/network/vortex.html, but the setting of the > option-field for 100 Mbps is not really clear to me. It depends on your driver version. If you are using the Scyld driver release you can use mii-diag eth0 -F 100baseTx-FDX If you are using another release, you should use the instruction with that driver. -- Donald Becker [email protected] Scyld Computing Corporation http://www.scyld.com 410 Severn Ave. Suite 210 Scyld Beowulf cluster system Annapolis MD 21403 410-990-9993 _______________________________________________ vortex mailing list [email protected] http://www.scyld.com/mailman/listinfo/vortex