[OLUG] Network Collisions

bbrush at unlnotes.unl.edu bbrush at unlnotes.unl.edu
Fri Jan 28 15:43:30 UTC 2000


True, but to put it simply, ethernet was designed knowing there would be
collisions and allowances were made for them.  There's really no way to
eliminate them totally on any of the broadcast network types, like
ethernet.  Token passing networks like token ring, and FDDI don't have
collisions, but token passing topologies have their own problems.

With a 3 node network, the amount of latency that's going to be introduced
by collisions is going to be negligible, unless you have a bad card which
is flooding the network.  Judging from your dump info, I'd say this isn't
the case or you would have lost packets.

Bill



                                                                                                    
                    brian at cbiowa.                                                                   
                    com                  To:     olug at bstc.net                                      
                                         cc:     (bcc: Bill Brush/NET/UNL/UNEBR)                    
                    01/28/2000           Subject:     Re: [OLUG] Network Collisions                 
                    09:22 AM                                                                        
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                    olug                                                                            
                                                                                                    
                                                                                                    





     If there is a collision wouldn't that mean the packet has to be resent
by the network cards?

John Williams wrote:
>
> Actually when you look at your ifconfig it shows that no packets were
> dropped.  As far as collisions go, it is normal for this to happen.  Your
> network card is designed to deal with collisions and back off from
sending
> packets for a random period of time before trying again.  Collisions do
> effect network performance when the network gets large enough.  A switch
> would be a better alternative to a hub as far as that goes.
>





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