nanog mailing list archives

Re: IOS architecture

From: Lukasz Bromirski <lukasz () bromirski net>
Date: Sun, 28 Oct 2012 14:41:46 +0100


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

Current thread:

IOS architecture Andrey Khomyakov (Oct 26)
- Re: IOS architecture David Swafford (Oct 26)
  - RE: IOS architecture Darren O'Connor (Oct 27)
    - Re: IOS architecture Valdis . Kletnieks (Oct 29)
    - Re: IOS architecture Aled Morris (Oct 29)
- Re: IOS architecture Pete Lumbis (Oct 27)
  - Re: IOS architecture Lukasz Bromirski (Oct 28)
- Re: IOS architecture Rupert Goodwins (Oct 28)