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Cisco Bug: CSCuq11068 - spurious message and pulse handling in timer wheel

Last Modified

Aug 28, 2020

Products (7)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco IOS XR Software
  • Cisco ASR 9922 Router
  • Cisco ASR 9010 Router
  • Cisco ASR 9006 Router
  • Cisco ASR 9001 Router
  • Cisco ASR 9912 Router

Known Affected Releases

5.1.2.BASE

Description (partial)

Symptom:
1) OSPF neighbors will not have routes in their OSPF database redistributed in by the affected router.

2) On the affected Router, we will have the affected routes on our database but with an age timer above the max value (3600)

3) The OSPF process will have a Dead Thread

Conditions:
Lwm API usage in timer wheel is in correct as it cannot take care of spurious message and pulse which can be received during some system activity. 
 
All the LWM  path are created  with  (_FTYPE_ANY flag) which means it can received spurious message and pulse during system acrivity such as  df' or 'mount'  / df' or 'unmount' command

Related Community Discussions

IOS-XR: OSPF/OSPFv3 にて一部の LSA の経路が広報されない
2015年7月23日(初版)   TAC SR Collection 主な問題 IOS-XR シリーズルータにおいて OSPF/OSPFv3 の経路にて、一部の LSA の経路が広報されない場合があります。 <確認方法> show ospf/ospfv3 database コマンドにて 一部の LSA の Age が MaxAge( 3600) を超えた 状態となります。また、同事象が発生した場合に、show process ospf/ospfv3 にて state が Dead になった Thread が確認出来ます。 ※以下は、ospfv3 で発生した場合の一例となります。 RP/0/RSP0/CPU0:ASR9K# show ospfv3 database <snip>             Router Link States (Area 0.0.0.0) ADV Router      Age         Seq#       Fragment ID  Link count  Bits <snip> 10.10.10.10     1290         0x80012a3b ...
Latest activity: Jul 22, 2015
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