> I don't think that so many collisions are normal! I think there is a > problem, because at work we nearly only use 3COM 100 Mbit cards and > don't have much collisions. Even under high load!
Collisions on half-duplex Ethernet are *normal*. Get used to it. Collisions is the standard flow control mechanism for half-duplex Ethernet. The amount of collisions you get depend on the cards used, the amount of traffic, and several other things. The amount of collisions is also not very interesting - the amount of *traffic* is. If you connect two hosts to a hub and run ttcp, to push a lot of traffic between them, you're very likely to get a 50% collision rate - with only two hosts. This is because *every* ack collides with a normal full sized packet. This is also perfectly fine and healthy. What you want to watch out for, is: - Late collisions (these are *not* normal) - Collisions when you think that the link is in full duplex mode. Steinar Haug, Nethelp consulting, sth...@nethelp.no To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-hackers" in the body of the message
