On Oct 27, 2012, at 11:00 PM, Pete Lumbis <alumbis@gmail.com> wrote:
You might want to take a look at the CEF book, which expands on this http://www.amazon.com/Cisco-Express-Forwarding-ebook/dp/B0015V9DQU/
both of these are still very accurate on how IOS operates today. The only major changes with IOS-XE is that IOS is now a process and packet forwarding is handled in hardware instead of software.
On the IOS-XE it's no longer single process, when you're running in the modular version. It's getting complicated.
For NX-OS and IOS-XR the software/operating system is wildly different and I think there is a definite gap in literature out there.
For now, there's Cisco Live and techtorials about architecture and inner works. There will be a book, or two :) -- "There's no sense in being precise when | Łukasz Bromirski you don't know what you're talking | jid:lbromirski@jabber.org about." John von Neumann | http://lukasz.bromirski.net