Cache Error Detected 6500
Contents |
Catalyst 6500 Series SwitchesTroubleshoot and AlertsTroubleshooting TechNotes Parity Errors Troubleshooting Guide Download Print Available Languages Download Options PDF (259.4 KB) View with Adobe Reader on a variety of devices Updated:Jul what is parity error 15, 2013 Document ID:116135 Document ID: 116135 Updated: Jul 15, 2013 Contributed by parity error cisco Shawn Wargo, Cisco Engineering. Download PDF Print Feedback Related ProductsCisco Catalyst 6500 Series Switches ContentsIntroductionBackgroundSoft ErrorsHard ErrorsCommon Error parity error fix MessagesProcessorRAMASICLatest AdvancementsProcessorRAMASICSoftwareMSFC IBC 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, parity error detected in vram explains common error messages, and recommends methods that help you avoid or minimize parity errors. Recent improvements in hardware and software design 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
System Returned To Rom By Processor Memory Parity Error At Pc
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 causes of memory parity errors, which are classified as either soft parity errors or hard parity errors.Soft ErrorsMost parity errors are caused by electrostatic or magnetic-related environmental conditions.The majority of single-event errors in memory chips are caused by background radiation (such as neutrons from cosmic rays), electromagnetic interference (EMI), or electrostatic discharge (ESD). These events may randomly change the electrical state of one or more memory cells or may interfere with the circuitry used to read and write memory cells.Known as soft parity errors, these events are typically transient or rando
Catalyst 6500 Series SwitchesTroubleshoot and AlertsTroubleshooting TechNotes Catalyst 6000/6500 System Crashes Troubleshooting Download Print Available Languages Download Options PDF
High Correctable Ecc Error Rate Detected Cisco
(159.2 KB) View with Adobe Reader on a variety of devices parity error checking ePub (82.3 KB) View in various apps on iPhone, iPad, Android, Sony Reader, or Windows Phone Mobi ltl 2 ltl_parity_check (Kindle) (89.2 KB) View on Kindle device or Kindle app on multiple devices Updated:Jun 13, 2016 Document ID:71095 ContentsIntroductionPrerequisitesRequirementsComponents UsedConventionsSupervisor Module Related CrashesSystem Returned to ROM by Power-on http://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/116135-trouble-6500-parity-00.html (SP by Abort)System Receives a Software Forced CrashSystem Returns to ROM by Unknown Reload Cause%PM_SCP-1-LCP_FW_ERR%SYSTEM_CONTROLLER-3-FATALFaulty Fan Causes the Supervisor to CrashSwitch Has Reset/Rebooted on Its OwnDFC-Equipped Module Has Reset on Its OwnBooting from the Wrong Device Causes a CrashCONST_DIAG-2-HM_SUP_CRSHEARL Driver: lyra_purge_search:process_push_event_list failedSNMP Query in ROMMon Upgrade Crashes the Switch%Error Opening Bootflash:Crashinfo (File Not Found)MSFC Module Related http://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/71095-6500-system-crash-ts.html CrashesSystem Receives a Bus Error ExceptionSystem Receives a Cache Parity ExceptionOther Parity Related Errors%MISTRAL-3-ERRORGeneric Diagnostic Procedures for Switches that run CatOSSanity Check for CatOSRecover Catalyst Switches that run CatOS from Booting FailuresRetrieve Information from the Crashinfo FileTroubleshoot Based on Error MessagesRelated Information Introduction This document discusses how to troubleshoot Cisco Catalyst 6000/6500 Series Switch Supervisor Engine switch processor (SP) and Multilayer Switch Feature Card (MSFC) route processor (RP) crashes. Prerequisites Requirements There are no specific requirements for this document. Components Used The information in this document is based on the Cisco Catalyst 6000/6500 Series Switch Supervisors and MSFC modules. The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command. Conventions Refer to Cisco Technical Tips Conventions for more information on document con
Post #1 of 5 (5900 views) Permalink 6500 sup720-3bxl crash Has anyone seen this reload cause before? Sounds like bad memory but the memory addresses http://www.gossamer-threads.com/lists/cisco/nsp/108171 are pretty non machine sounding some I am wondering if it is a http://infocenter.arm.com/help/topic/com.arm.doc.ddi0363d/Chdgfjac.html 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 parity error 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 (5769 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. cache error detected 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/mailman/listinfo/cisco-nsp > archive
detects, handles, reports, and corrects cache memory errors. Memory errors have Fault Status Register (FSR) values to distinguish them from other abort causes.This section describes:Error build optionsAddress decoder faultsHandling cache parity errorsHandling cache ECC errorsErrors on instruction cache readErrors on data cache readErrors on data cache writeErrors on evictionsErrors on cache maintenance operations.Error build optionsThe caches can detect and correct errors depending on the build options used in the implementation. The build options for the instruction cache can be different to the data cache.If the parity build option is enabled, the cache is protected by parity bits. For both the instruction and data cache, the data RAMs include one parity bit per byte of data. The tag RAM contains one parity bit to cover the tag and valid bit.If the ECC build option is enabled:The instruction cache is protected by a 64-bit ECC scheme. The data RAMs include eight bits of ECC code for every 64 bits of data. The tag RAMs include seven bits of ECC code to cover the tag and valid bit.The data cache is protected by a 32-bit ECC scheme. The data RAMs include seven bits of ECC code for every 32 bits of data. The tag RAMs include seven bits of ECC code to cover the tag and valid bit. The dirty RAM includes four bits of ECC to cover the dirty bit and the two outer attributes bits.Address decoder faultsThe error detection schemes described in this section provide protection against errors that occur in the data stored in the cache RAMs. Each RAM normally includes a decoder which enables access to that data and, if an error occurs in this logic, it is not normally detected by these error detection schemes. The processor includes features that enable it to detect some address decoder faults. If you are implementing the processor and require these features, contact ARM to discuss the features and your requirements.Handling cache parity errorsTable 8.2 shows the behavior of the processor on a cache parity error, depending on bits [5:3] of the Auxiliary Control Register, see Auxiliary Control Registers. Table 8.2. Cache parity error behaviorValueBehaviorb000Abort on all parity errors, force write through, enable hardware recoveryb001b010b011Reservedb100Disable parity checkingb101Force write-through, enable