Symptom:
StanbyPTF is continuosly going for reboot after upgrade from Aristotle_build_231 to Aristotle_build_248

Conditions:
Problem Statement / SYMPTOM : 
**************************
StanbyPTF is continuosly going for reboot after upgrade from Aristotle_build_231 to Aristotle_build_248

Build-number: 
*************
/auto/otsrc-swvxw-ind/aristotle/ARISTOTLE_BUILD_248

Topology :
********* 
Attached in enclosure(MDS topology)


Reproducibility : 1 out of 1
***************

Steps to Recreate: 
*****************

1) have a topology as mentioned in enclosure
2) upgrade clean Node from build_231 to build_248
3) created FOGs and Rings in CTC mode as mentioned in the topology
4) moved node from CTC to IOS with Save DB option
5) pasted the configurations taken from all the nodes in IOS mode
6) Standby went for continuos reboot with Error traces as below

**Failed to get RF lock, Rebooting peer Fabric**** **Failed to get RF lock, Rebooting peer Fabric****

7) PB connected to Active PTF was also not coming UP
8) PTM was also going for continuos reboot

Expected behaviour :
******************
All cards sould come UP after upgrade and moving from CTC to IOS 

Actual Behaviour :
****************
Stanby PTF was not coming UP 

Workaround : 
***********
HardReset of both the Active and Stanby PTF cards simultaneously

DE-Contacted:
*************
rangopal

Traffic Impact:
***********
Yes