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Cisco Bug: CSCvs36064 - Packet drop PARSE_DROP_IN_UIDB_TCAM_MISS, np drvlog EZprmCAMC_TCAM_CONTROL_INTERFACE_OR_DEVICE_ERR

Last Modified

Oct 23, 2020

Products (9)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco ASR 9910 Router
  • Cisco IOS XR Software
  • Cisco ASR 9922 Router
  • Cisco ASR 9010 Router
  • Cisco ASR 9904 Router
  • Cisco ASR 9006 Router
  • Cisco ASR 9001 Router
  • Cisco ASR 9912 Router

Known Affected Releases

6.5.3.BASE

Description (partial)

Symptom:
Ingress packets being dropped on NP counter PARSE_DROP_IN_UIDB_TCAM_MISS .

Also in np drvlog file there is:
    Nov  1 02:02:49.485                                                                ERROR! 0x80001755 EZprmCAMC_ExtTCAMCommand: command fails due to EZprmCAMC_TCAM_CONTROL_INTERFACE_OR_DEVICE_ERR in file 'drivers/chips/np/ezchip-5c/src/host/driver/src/prm/chn/EZprmCAMC.c' line 2493
    Nov  1 02:02:49.485                                                                ERROR! 0x80001755 EZprmCAMC_ExtTCAMCommand: command fails due to TCAM error in file 'drivers/chips/np/ezchip-5c/src/host/driver/src/prm/chn/EZprmCAMC.c' line 2499
    Nov  1 02:02:49.485                                                                ERROR! 0x80001755 EZprmCAMC_ExtTCAMCommand: Stored error. in file 'drivers/chips/np/ezchip-5c/src/host/driver/src/prm/chn/EZprmCAMC.c' line 2581
    Nov  1 02:02:49.486                                                                ERROR! 0x80001755 EZapiPrm_ExtTCAMCommand: EZprmCAMC_ExtTCAMCommand failed, channel Id 0. in file 'drivers/chips/np/ezchip-5c/src/host/driver/src/api/EZapiPrm.c' line 1016

drvlog file can be copied/seen on disk0:np for affected card or displayed with 'show controllers np drvlog location {}'

Conditions:
Normal operation.
Issue is very rarely seen.

The above described TCAM errors are present in the NPdrvlog file, but there are no TCAM interrupts seen:

RP/0/RSP0/CPU0:PRM5#show controllers np interrupts all all loc 0/3/cpu0 | include TCAM
Fri May 15 09:27:19.693 EDT
 0                           TCAM   30       0      0  N   Y 0x561e35784861   <---- this shows 0 interrupts seen

Here is an example with 4 interrupts seen:

RP/0/RSP0/CPU0:PRM5#show controllers np interrupts all all loc 0/2/cpu0 | include TCAM
Fri May 15 09:26:59.021 EDT
 0                           TCAM   30       4      0  Y   Y 0x556f48417861    <---- this shows 4 interrupts seen
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