pcap log analysis

["Joe Hickory" <J.Hickory () gmx net>]

hi list, 
 
anybody knows or has some shell scripts or the like with which i can analyse
network 
traffic saved in pcap format in a file. didn't wanted to reinvent the wheel,
 
as i think there are others who faced the same problem before, but couldn't
find 
anything. 
 
some nice created diagrams out of the data would be great, but not
neccessary. 
 
any suggestion would be great 
 
joe