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Cisco Bug: CSCvu12973 - 128K HHE bringup RPFO: >70K sessions go down due to "RIB Route Add callback failure"

Last Modified

May 14, 2020

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases

7.3.1.CE

Description (partial)

Symptom:
>70K HHE subscriber sessions go down on RPFO, because of IP subscriber session create failure

RP/0/RSP0/CPU0:SanDiego#sh subscriber manager disconnect-history unique summary
Sat May  2 19:14:20.766 UTC

[ IEDGE DISCONNECT HISTORY UNIQUE EVENTS ]

 Location: 0/RSP0/CPU0

Count  Last Interface          Last Time Disconnected  Disconnect reason             
=====  ==============          ======================  =================             

22     BE4.10.ip25182          2020:05:02 18:30:22     Client lease out of 
                                                       synchronization, DC: 1 
                                                       AC: 114 TC: 9
76837  BE4.10.ip25175          2020:05:02 18:39:32     IP Subscriber session 
                                                       create failure ( Rib 
                                                       Route Add Callback 
                                                       Failure ) , DC: 0 AC: 0 
                                                       TC: 9

Conditions:
1. Bring up 128K HHE sessions.
2. While bring up towards the end, RPFO
3. On new active, more than 70K sessions go down due to "RIB Route Add callback failure"
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