[c-nsp] How to see interface configuration after card failure on ASR9K

[Koch, Andrew]

On Wednesday, December 28, 2011 07:33 PM Mark Tinka wrote
> We've used that before - what I know is that 'preconfigure'
> will only display configurations of a previously removed
> line card if the interfaces were initially configured with
> the 'preconfigure' command.
> 
> We haven't tested this by taking out a line card, but I
> recall that this was one of the restrictions.

That is not my experience with preconfigure.  If I have a MSC go missing, all of the interfaces associated with the line card become "interface preconfigure xxx" and will restore when the MSC does.  I have also seen the interfaces show a preconfigure state during a boot-up process where the MSC has not completed loading yet.  None of the interfaces seen in either of these cases were initially pre-configured before the MSC & PLIM were installed.

I am not sure if this is the same on the ASR9k, my only experience with IOS-XR is on the CRS.  I also am not certain what the state would be if only the PLIM is reported as missing.

One thing to note, the names of the interfaces may be re-ordered by the additional word preconfigure.  You may need to look farther down the configuration than where the interfaces were previously listed (this can really make a mess of Rancid).


Andy Koch
TDS Telecom - IP Network Operations
andrew.koch at tdstelecom.com