Look here when Chapter 1 of the book mentions something extra to be found on the web site.
Depictions of real backbone segemnts:
bad boy (UUNet)
Go to network-tools.com
for several cool internet utilities, including a packet tracer.
has a concise Ethernet and LAN overview.
a look at how packet headers are "nested" as packets bounce up and down the Internet protocol stack.
Web Server Statistics:
The statistics mentioned in the book came from Netcraft.com
. Have they changed much since we wrote the book?