Re: [OSL | CCIE_SP] New CCIE Service Provider Blueprint

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: markom_at_ipexpert.com
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On Wed, Oct 20, 2010 at 13:10, Ryan West <rwest_at_zyedge.com> wrote:
> Marko,
>
>>-----Original Message-----
>>From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] 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. B If the underlying OS is a *nix variant, what would stop them from virtualizing the hardware further creating an IOU environment for that?
>
> -ryan
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