Cisco Cisco IOS XR Software Release 3.9

In some very rare cases inconsistencies in the content of the internal configuration files can 
appear. In such situations, to avoid configuration loss during upgrade, the following steps can be 
optionally done before activating packages:

Clear the NVGEN cache:

RP/0/RSP0/CPU0:PE44_ASR-9010# run nvgen –F 1

Create a dummy config commit:

RP/0/RSP0/CPU0:PE44_ASR-9010# config

RP/0/RSP0/CPU0:PE44_ASR-9010(config)# hostname <hostname>

RP/0/RSP0/CPU0:PE44_ASR-9010(config)# commit

RP/0/RSP0/CPU0:PE44_ASR-9010(config)# end

Force a commit update by using the reload command. Press “n” when the confirmation prompt 
appears:

RP/0/RSP0/CPU0:PE44_ASR-9010# reload

Updating Commit Database. Please wait...[OK]

Proceed with reload? [confirm] 

Press “n”.

In some cases other activity may preclude a reload. The following message may display:

RP/0/RSP0/CPU0:PE44_ASR-9010# reload

Preparing system for backup. This may take a few minutes ............System 

configuration backup in progress [Retry later]

If you receive this message wait and then retry the command after some time.

For information on obtaining documentation, submitting a service request, and gathering additional 
information, see What’s New in Cisco Product Documentation at: 

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