IOS XE is the same IOS running virtualized in underlying Linux kernel on ASR1k. From a user perspective, it looks and feels just like a regular IOS. IOS XR on the other hand is significantly different than IOS from the user perspective. Syntax is different, concepts are different (commit and rollback, for example) and virtualization is done differently.
-- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: [email protected] Telephone: +1.810.326.1444 Web: http://www.ipexpert.com/ On Wed, Oct 20, 2010 at 13:10, Ryan West <[email protected]> wrote: > Marko, > >>-----Original Message----- >>From: [email protected] [mailto:[email protected]] On Behalf Of Marko >>Milivojevic >>Sent: Wednesday, October 20, 2010 8:59 AM >> >>- There will be significant troubleshooting portion, but I don't expect a >>dedicated section on it. The reason why is that IOS XR can't, to the best of >>my knowledge, be virtualized. Dedicated TS section would require >two >>hardware pods per student and that's unrealistic. If they focus >>troubleshooting only on IOS virtualized in IOU, half of the blueprint is off >>the troubleshooting section, as it cannot be properly emulated. > > I don't pretend to know all the differences between IOS XE and IOS XR, but XE > can run multiple stacks of the same IOS and do ISSU / failover between. If > the underlying OS is a *nix variant, what would stop them from virtualizing > the hardware further creating an IOU environment for that? > > -ryan > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
