Re: TCP vs UDP

["Carl Edman" <cedman@cedman.remote.Princeton.EDU>]

Philip Brown <philb@soda.berkeley.edu> writes:
> Anyone got some figures as to exactly how much gets "compressed", in
> a tcp packet with 40 bytes of header, and 40 bytes of user
> information?! (compared to UDP. does UDP get compressed at all?)

Yes, according to the original paper (available as RFC something or  
other) VJ TCP header compression (which is the only thing widely used)  
compresses TCP headers down to an average of about 6 bytes.  UDP  
headers are different and not compressed at all.  Eric is right.  If  
you have CSLIP, UDP may not be a win bandwidth-wise and may very well  
be a loss.

	Carl Edman