On Sun, 2002-11-03 at 16:54, rotbau wrote: > Hello All, > > I am usually in the habit of forcing my network servers to > 100 Mbps Full Duplex instead of rolling the dice with auto > negotiation (Netware and NT/W2K boxes). We have had some > problems in the past and forcing them leaves nothing to > question. I have done some googling and looked for how to > do this on Linux. I have seen some refernces to a options > 0x16 or 0x32 and also some stuff like 100FD added to the > config. I have a couple of questions for the group. > > 1. Is it a good or bad idea to force duplex on Linux? There's nothing intrinsically dangerous about it, if that's what your concern is. It's never caused a kernel panic or anything like that for me. > > 2. If good, does anyone know the correct syntax and where > to add it or at least a good source to find the answer? Is > this specific to the NIC you have in the box? (as root:) /sbin/mii-tool -F 100baseTx-FD eth0 I added it as a S99forceFD script in my /etc/rc3.d. Some cards lack the mii (media-independent interface) so this won't work for them, but most have it. Basically, if mii-tool can read your card, it'll be able to set it. > > 3. When I do an ifconfig I don't see it listed as to the > mode 100 full or half, is there anyway to determine this? /sbin/mii-tool by itself will give you the setting of each interface. > > I am running RH 7.1, 2.4 kernel with a Intel Pro 100 nic. Should work. Let us know. -- Carl Patten