I just used TCP/IP Illustrated, Volume 1 today!  It's a bit dated, of  
course. For example, it talks about TOS and Precedence instead of DSCP  
and ECN. I would still recommend it though.
Sometimes I actually go to my book case when I don't trust the various  
websites. In this case, I was listening to an audio class that I'm  
supposed to teach soon, and the instructor claimed that the IP  
checksum doesn't cover the TTL field since that field changes a lot. I  
googled and checked various websites and none of them gave me the  
feeling that the author really knew and wasn't just copying and  
pasting from other sites. So I reached for my TCP/IP Illustrated. (By  
the way, the entire IP header is covered by the checksum, including  
the TTL. This does mean routers have to re-calculate it, but I'm  
pretty sure that they do that. At least that's what I got from a quick  
check of TCP/IP Illustrated.)
Other good books include:
Comer, Internetworking with TCP/IP
Forouzan, TCP/IP Protocol Suite
Kurose, Computer Networking
Hope that helps...
_________________
Priscilla Oppenheimer
http://www.priscilla.com
Will work for 0xC0FFEE
On Apr 14, 2009, at 4:18 PM, Boaz Galil wrote:
What is the best TCP/IP reference book out there? is it still TCP/IP  
illustrated? any recommendation?
--
Boaz.
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