Guest

Preview Tool

Cisco Bug: CSCur45126 - Correctable ECC errs in NP instruction mem IDs 42,44,47,52 not repaired

Last Modified

Sep 28, 2020

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases

4.3.2.BASE

Description (partial)

Symptom:
A single-bit ECC error in NP instruction memory was not repaired properly and thus continues to be detected and reported repeatedly.     Here is an example:

LC/0/7/CPU0:Dec  1 01:54:23.793 MYT: prm_server_ty[303]: %PLATFORM-NP-3-ECC : prm_ser_check: Single-bit ECC error detected: NP 3, block 0x17 (MDF), offset 14, memid 47, name INSTRUCTION_MEM14, addr 0x0000003e, bit 16, ext info 0x00000007 0xffffffff 0xffffffff 0xffffffff, action 0 (Fix)  
LC/0/7/CPU0:Dec  1 05:00:39.830 MYT: prm_server_ty[303]: %PLATFORM-NP-3-ECC : prm_ser_check: Single-bit ECC error detected: NP 3, block 0x17 (MDF), offset 10, memid 47, name INSTRUCTION_MEM10, addr 0x0000003e, bit 16, ext info 0x00000007 0xffffffff 0xffffffff 0xffffffff, action 0 (Fix)  
LC/0/7/CPU0:Dec  1 07:45:28.777 MYT: prm_server_ty[303]: %PLATFORM-NP-3-ECC : prm_ser_check: Single-bit ECC error detected: NP 3, block 0x17 (MDF), offset 8, memid 47, name INSTRUCTION_MEM8, addr 0x0000003e, bit 16, ext info 0x00000007 0xffffffff 0xffffffff 0xffffffff, action 0 (Fix)  
LC/0/7/CPU0:Dec  1 12:19:51.357 MYT: prm_server_ty[303]: %PLATFORM-NP-3-ECC : prm_ser_check: Single-bit ECC error detected: NP 3, block 0x17 (MDF), offset 10, memid 47, name INSTRUCTION_MEM10, addr 0x0000003e, bit 16, ext info 0x00000007 0xffffffff 0xffffffff 0xffffffff, action 0 (Fix)  

There are no functional side effects, but the error will continue to be detected and reported over and over.

Conditions:
This problem is specific to Typhoon linecards and to the following NP blocks and memid's:

block 0x14 (RSV), memid 42
block 0x15 (RSV), memid 44
block 0x17 (MDF), memid 47
block 0x18 (MDF), memid 52

Any repeating error which has a different block or memid than the ones listed above is not covered by this fix.

Note that this fix only addresses the issue where the underlying bit error is not repaired properly.    There is no specific trigger for the underlying error as it is a rare and random hardware occurrence.

Related Community Discussions

ASR9K: Typhoon LC で NP の Instruction Memory(ID:42,44,47,52) の SBE が修正されない
2015年7月25日(初版) TAC SR Collection 主な問題 Typhoon LC 上の NP(Network Processor) | で使用されている特定の Instruction Memory (ID:42,44,47,52)  で発生した Single Bit Error(SBE) が正しく修正されません。 <問題の確認方法> 同一 NP 上の同一メモリにて、下記例のようなログが 定期的に 出力されることを確認。 prm_server_ty[xxx]: % PLATFORM-NP-3-ECC : prm_ser_check: Single-bit ECC error detected : NP 3, block 0x17 (MDF) , offset 14, memid 47 , name INSTRUCTION_MEM 14, addr 0x0000003e, bit 16, ext info 0x00000007 0xffffffff 0xffffffff 0xffffffff, action 0 (Fix)    ※メッセージ中の name が INSTRUCTION_MEM ...
Latest activity: Jul 26, 2015
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.