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Cisco Bug: CSCun23849 - Preserving SVD default enable setting upgrading 4.2.1 to 5.1.x

Last Modified

Sep 13, 2018

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases

4.2.1.BASE

Description (partial)

Symptom:
For 4.2.1 the SVD (selective vrf download) default configuration setting is "Enabled" or "ON".

For 5.1.x (since 4.3.1) there is a knob introduced to Enable SVD 
(CLI is "svd platform enable" under admin config mode) while making
the Default config setting to "OFF" or "Not enabled".

"svd platform enable" needs a reboot after CLI is configured.

This means after upgrade to 5.1.x it will need 2 reboots,
one for upgrade and other after "svd platform enable" is configured.
To avoid the extra reboot, When upgrading from 4.2.1 to 5.1.x in such situation,
this SMU will provide a fake "svd platform enable" command which can be
configured on 4.2.1 itself. 
So that only one reboot is required during upgrade to 5.1.x

Conditions:
- ASR9000 routers should be running release 4.2.1 release.
- Upgrading to 4.3.x or later version such as 5.1.x
- SVD is set to default "ON" for 4.2.1
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