[c-nsp] ASR 9000 Upgrade Expectations

James Bensley jwbensley at gmail.com
Thu Jul 14 05:30:43 EDT 2016

On 14 July 2016 at 10:26, James Bensley <jwbensley at gmail.com> wrote:
> assuming there are no problems, 2 hours actual time

Sorry that wasn't clear.

That isn't specifically all down time. If you are upgrading IOS-XR
over-the-top of the existing version, downtime might be 45 minutes to
1 hour (you will have to reboot to boot from the new code version at
some point, and either reboot again to do FPD upgrades or at least
reboot certain line cards, so it's typically two seperate outages that
we just communicate out as 1 hour of consant downtime).

Or if you are erasing and installing from fresh on the new version,
then the box is down for pretty much the whole 2 hours.


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