Imprecise Data Parity Error
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Catalyst 6500 Series SwitchesTroubleshoot and AlertsTroubleshooting TechNotes Parity Errors Troubleshooting Guide Download Print Available Languages what is parity error Download Options PDF (259.4 KB) View with Adobe Reader on
Parity Error Cisco
a variety of devices Updated:Jul 15, 2013 Document ID:116135 Document ID: 116135 Updated: Jul 15, 2013 parity error fix Contributed by Shawn Wargo, Cisco Engineering. Download PDF Print Feedback Related ProductsCisco Catalyst 6500 Series Switches ContentsIntroductionBackgroundSoft ErrorsHard ErrorsCommon Error MessagesProcessorRAMASICLatest AdvancementsProcessorRAMASICSoftwareMSFC IBC
System Returned To Rom By Processor Memory Parity Error At Pc
Reset6700 Series 'Single-Bit Parity Error' ResetRecommendationsSoft Errors (SEU)Environmental AuditLatest Firmware (Rommon)Thumb ScrewsHard Errors (Malfunction)Hardware (MTBF and EOL) AuditHardware DiagnosticsRelated Cisco Support Community DiscussionsIntroductionThis document describes soft and hard parity errors, explains common error messages, and recommends methods that help you avoid or minimize parity errors. Recent improvements in hardware and software design parity error detected in vram reduce parity problems as well. BackgroundWhat is a processor or memory parity error?Parity checking is the storage of an extra binary digit (bit) in order to represent the parity (odd or even) of a small amount of computer data (typically one byte) while that data is stored in memory. The parity value calculated from the stored data is then compared to the final parity value. If these two values differ, this indicates a data error, and at least one bit must have been changed due to data corruption.Within a computer system, electrical or magnetic interference from internal or external causes can cause a single bit of memory to spontaneously flip to the opposite state. This event makes the original data bits invalid and is known as a parity error.Such memory errors, if undetected, may have undetectable and inconsequential results or may cause permanent corruption of stored data or a machine crash.There are many c
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Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta http://networkengineering.stackexchange.com/questions/3475/cat6k-parity-failure-and-long-sso-failover Discuss the workings and policies of this site About Us Learn http://www.gossamer-threads.com/lists/cisco/nsp/108171 more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Network Engineering Questions Tags Users Badges Unanswered Ask Question _ Network Engineering Stack Exchange is a question and answer site for network engineers. Join them; it only takes parity error a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Cat6K parity failure and long SSO failover up vote 3 down vote favorite From a Cat6K, RP crashinfo indicates parity error. Guidance seems to be to not do anything unless imprecise data parity this happens more than once in 12-month period. At what point do you push Cisco for hardware or RAM replacement? Cache error detected! CPO_ECC (reg 26/0): 0x00000064 CPO_CACHERI (reg 27/0): 0x20000000 CP0_CAUSE (reg 13/0): 0x00000400 Real cache error detected. System will be halted. Error: Primary instr cache, fields: data, Actual physical addr 0x00000000, virtual address is imprecise. Imprecise Data Parity Error Imprecise Data Parity Error Interrupt exception, CPU signal 20, PC = 0x41AAE2DC Also took exceedingly long to failover from active SUP720-PFC3B to hot standby -- 18 minutes -- w/SSO. **From my research, it appears long failover time could be due to crashdumps, but I don't see coredumps configured. And without crashdumps, wouldn't root-cause be difficult if not impossible. Cisco's states the following for failover time. Without coredumps configured -- no exception type commands -- why would SSO take so long (18 min)? I was completely down during this period; even my HSRP VIPs that were active seemed to have stay alive on a dead SUP instead o
Post #1 of 5 (5916 views) Permalink 6500 sup720-3bxl crash Has anyone seen this reload cause before? Sounds like bad memory but the memory addresses are pretty non machine sounding some I am wondering if it is a software bug. Cache error detected! CPO_ECC (reg 26/0): 0x000000F3 CPO_CACHERI (reg 27/0): 0x84000000 CP0_CAUSE (reg 13/0): 0x00004400 Real cache error detected. System will be halted. Error: Primary data cache, fields: , 1st dword Actual physical addr 0x00000000, virtual address is imprecise. Imprecise Data Parity Error Software version is: s72033_sp-ADVIPSERVICESK9_WAN-M), Version 12.2(33)SXI, RELEASE SOFTWARE (fc2) Thanks, John _______________________________________________ cisco-nsp mailing list cisco-nsp [at] puck https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ oles at ovh Apr26,2009,2:23PM Post #2 of 5 (5784 views) Permalink Re: 6500 sup720-3bxl crash [In reply to] Hmmm ... same today morning !? Cache error detected! CPO_ECC (reg 26/0): 0x0000009F CPO_CACHERI (reg 27/0): 0xA0000000 CP0_CAUSE (reg 13/0): 0x00000800 Real cache error detected. System will be halted. Error: Primary data cache, fields: data, Actual physical addr 0x00000000, virtual address is imprecise. Imprecise Data Parity Error Imprecise Data Parity Error Interrupt exception, CPU signal 20, PC = 0x40E7BE6C ========= Start of Crashinfo Collection (07:05:17 GMT Sun Apr 26 2009) ========= IOS (tm) s72033_sp Software (s72033_sp-IPSERVICESK9-M), Version 12.2(18)SXF14, RELEASE SOFTWARE (fc1) On Sun, Apr 26, 2009 at 01:13:05PM -0700, John van Oppen wrote: > Has anyone seen this reload cause before? Sounds like bad memory but > the memory addresses are pretty non machine sounding some I am wondering > if it is a software bug. > > > Cache error detected! > CPO_ECC (reg 26/0): 0x000000F3 > CPO_CACHERI (reg 27/0): 0x84000000 > CP0_CAUSE (reg 13/0): 0x00004400 > > Real cache error detected. System will be halted. > > Error: Primary data cache, fields: , 1st dword > Actual physical addr 0x00000000, > virtual address is imprecise. > > Imprecise Data Parity Error > > > Software version is: s72033_sp-ADVIPSERVICESK9_WAN-M), Version > 12.2(33)SXI, RELEASE SOFTWARE (fc2) > > > Thanks, > John > _______________________________________________ > cisco-nsp mailing list cisco-nsp [at] puck > https://puck.nether.net/m