Issue observed on SyncE and PTP communication with hybrid mode

Ineligibility reason: PTP master x.x.x.x untraceable

user@device> show chassis synchronization extensive 
Current clock status  : Locked
Clock locked to       : Primary
SNMP trap status      : Disabled

Configured sources: 

Interface           : xe-0/0/0     
Status              : n/a           Index       : 221    
Clock source state  : n/a           Priority    : Default(8)    
Configured QL       : SEC           ESMC QL     : SEC       
Clock source type   : ifd           Clock Event : n/a      
Wait-to-restore     : 5  min        Hold-off    : 1000 ms
Interface State     : Up,ESMC Rx(SSM 0xb),ESMC TX(QL SEC/SSM 0xb), 
Ineligibility reason: PTP master 0.0.0.0 untraceable  <================

For the MX platforms, in hybrid mode of operation, both PTP and SyncE sources must fall on the same line card.

This is not applicable to MX10008/16 and MX10003/MX204, here PTP and SyncE can be from two different line cards.

SyncE source across multiple linecards cannot be used in PTP-Hybrid source as fallback clock as we have a product limitation of PTP lanes used for SyncE clock as well in SCBE2 and MPC1-9 types.

Workaround:

Use SyncE source with in same line card for PTP-Hybrid mode of operation.

This is updated in below PR:

https://prsearch.juniper.net/problemreport/PR1536013