From: Howard C. Berkowitz (hcb@xxxxxxxxxxxx)
Date: Fri Feb 15 2002 - 00:49:00 GMT-3
I hate to follow up my own posts, but let me offer some suggested
general reading.
Look at RFC1812, which will give some broad specifications.
John Moy's OSPF books will give you an example of how a protocol
implementation is designed -- the second book has the code of an
actual implementation.
You can also download the free Zebra code and examine it. Zebra's
command language is closer to Cisco's than is GateD. Old versions of
GateD are downloadable, but the more recent versions are commercial.
Indeed, there's a commercial version of Zebra called IPinfusion.
At some point, you're going to need to understand a fair bit about
data structures and searching them. Donald Knuth's _The Art of
Computer Programming_, Volume 3, has a good deal about it. You also
may want to do web searches for radix and Patricia trees (also
spelled tries). The IOS internals book has some material on this sort
of table.
Agreeing with some other posters, this is interesting material, but
frankly I'd call it at a level beyond CCIE.
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