I am reading Doug Comer's excellent book Internetworking with TCP/IP vol 1.
Highly recommended, and I wish I had followed the good advice of several
other people on this list, and read the book a year ago.
I have a question on sliding windows as Comer describes it: "The TCP sliding
window mechanism operates at the octet level, not at the segment or packet
level" Comer goes on to describe the operation of the mechanism, and
indicates that acknowledgements occur octet for octet.
This strikes me as highly inefficient, and something that would render TCP
unusable in networks of any size. Because acknowledgements are based on
sequence numbers, there would have to be a TCP header for every octet. Not
good at all.
I am no doubt missing something fundamental here. Perhaps TCP stack
implementations are written in such a way that the "octets" being sent and
acknowledge via the sliding window mechanism are really segments / packets?
I.e. hundreds of octets at a time?
Can someone enlighten me?
Chuck
One IOS to forward them all.
One IOS to find them.
One IOS to summarize them all
And in the routing table bind them.
-JRR Chambers-
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=6899&t=6899
--------------------------------------------------
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
