[c-nsp] When do you upgrade IOS?

[Mark Tinka]

On Sunday, February 19, 2012 11:36:54 PM Nick Hilliard 
wrote:

> A lot less painful on asr9k than on crs*.  The 9k just
> take ages but don't tend to end being the marathon
> sessions that seem to be the norm for the CRS platform.

We do both also. The biggest issue is those SMU's that, 
contrary to the documentation, always seem to be service-
affecting.

Loading those updates and restarting the affected components 
is where all the time is lost. And the SMU's are numerous.

> Another important point on IOS-XE is that Cisco are
> planning to create much shorter software support cycles
> than previously which means that you really need to keep
> up to date with software releases if you want to avail
> of TAC support for problem tickets.  Conversely, the
> support costs for XE devices is substantially lower.

Aye.

Mark.
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