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Cisco Bug: CSCvv23832 - 731-17I: IDs allocated not in sync across RPs leading to npu_drv crash after RPFO with LDPoTE scale

Last Modified

Sep 17, 2020

Products (1)

  • Cisco 8000 Series Routers

Known Affected Releases

7.3.1.BASE

Description (partial)

Release-note

Symptom:
Encapid count mismatch in GRID between active-RP and standby-RP for LSD.

Example:
2000 encap entries in GRID on active RP for LSD

RP/0/0/CPU0:one#show grid pool 2 client lsd location 0/0/CPU0 
Fri Sep  4 13:56:10.313 EDT

Table Ptr                     : 0x4cc3f208
Pool ID                       : 2
Client Name                   : lsd
Node Bitmap                   : 0x0
Ready time                    : not set
Creation time                 : Sep  4 13:40:55 2020
EOD time                      : not set
Current num of table entries  : 2000

Only 14 encap entries in GRID on standby RP for LSD
RP/0/0/CPU0:one#show grid pool 2 client lsd location 0/1/CPU0 
Fri Sep  4 13:56:13.727 EDT

Table Ptr                     : 0x4cc3f208
Pool ID                       : 2
Client Name                   : lsd
Node Bitmap                   : 0x0
Ready time                    : not set
Creation time                 : Sep  4 13:43:57 2020
EOD time                      : not set
Current num of table entries  : 14

Conditions:
Platforms that support encapids are affected (such as NCS5500 and Spitfire)

In a scaled setup, this defect can lead to some of the encapids not being IDT'd (Initial-Data-Transfer) from active-LSD to standby-LSD.

IDT from active-LSD to standby-LSD happens after RPFO, standby-LSD process restart or AIPC link-flap between active and standby-LSD
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