John R Pierce wrote: > mcclnx mcc wrote: > >> I have two DELL servers with two Ethernet ports in it. >> Bith servers have CENTOS 4.5 installed. First >> Ethernet port connect to public Ethernet line and work >> correctly. Second Ethernet port I connect >> point-to-point as private Ethernet (cable direct >> connect without router or switch). Private Ethernet >> use IP asddress 1.1.1.1 and 1.1.1.2. >> >> > > > are you using a 'crossover' cable for this? you can't patch two NIC' > directly together with a regular patch cable, it has to be a crossover > cable that has Tx wired to Rx and visa versa. Also, I've had mixed > results using crossover cabling with 1000baseT gig ethernet A large number of NICs are autosensing. They do not need a crossover cable. I can hook any of my three notebooks together point to point with a regular cable. They figure it out. Many of my switches do not have the MTI/MTO switch; they autosense if they are 'down stream'. I forget which standard. For some reason I am thinking IEEE 802.1ab, but it is probably a different one. >