IOS architecture

Lukasz Bromirski lukasz at
Sun Oct 28 13:41:46 UTC 2012

On Oct 27, 2012, at 11:00 PM, Pete Lumbis <alumbis at> wrote:

> You might want to take a look at the CEF book, which expands on this
> 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 at
 about."               John von Neumann |

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