Processor Memory Parity Error
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7200 Series RoutersTroubleshoot and AlertsTroubleshooting TechNotes Processor Memory Parity Errors (PMPEs) Download Print Available Languages Download Options PDF (85.5 KB) View with Adobe Reader on what is parity error a variety of devices ePub (74.4 KB) View in various apps on parity error cisco iPhone, iPad, Android, Sony Reader, or Windows Phone Mobi (Kindle) (72.7 KB) View on Kindle device or Kindle parity error fix app on multiple devices Updated:May 25, 2016 Document ID:6345 ContentsIntroductionPrerequisitesRequirementsComponents UsedConventionsIdentify a Parity ErrorSoft Versus Hard Parity ErrorsIsolate the ProblemCisco 4500 and 4700 PlatformsRoute/Switch Processor (RSP), Network Processing Engine (NPE), and real cache error detected. system will be halted Route Processor (RP) PlatformsParity Error in DRAM or SRAM (MEMD)Parity Error Pulled from SRAMVersatile Interface ProcessorRecommended ActionsInformation to Collect if You Open a TAC Service RequestRelated Information Introduction This document explains what causes parity errors on Cisco routers, and how to troubleshoot them. Prerequisites Requirements Cisco recommends that you have knowledge of how to troubleshoot router crashes. Refer to Troubleshooting Router Crashes
Bcm-4-cor_ecc_high
for more information. Components Used This document is not restricted to specific software and hardware versions. 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 conventions. Identify a Parity Error Memory parity errors occur in MultiChannel Interface Processor (MIPS)-based processor products such as: Cisco 4500/4700 Series Routers Cisco 7500 Series Routers (RSP1, RSP2, RSP4, RSP8, VIP2-10, VIP2-15, VIP2-20, VIP2-40, VIP2-50) Cisco 7000 Series Routers (RSP 7000) Cisco 7200 Series Routers (NPE-100, NPE-150, NPE-175, NPE-200, NPE-225, NPE-300) Cisco 12000 Series Internet Router Here are some messages, which are all related to the detection of bad parity somewhere in the system (the list is not exhaustive, but contains the most common messages): In the show version command output: System restarted by processor memory parity error at PC 0x6014F7C0, address 0x0 or System restarted by shared memory pari
Catalyst 6500 Series SwitchesTroubleshoot and AlertsTroubleshooting TechNotes Parity Errors Troubleshooting Guide Download Print Available Languages Download Options PDF (259.4 KB) View with
Parity Error Detection
Adobe Reader on a variety of devices Updated:Jul 15, 2013 Document parity error definition ID:116135 Document ID: 116135 Updated: Jul 15, 2013 Contributed by Shawn Wargo, Cisco Engineering. Download PDF Print parity bit Feedback Related ProductsCisco Catalyst 6500 Series Switches ContentsIntroductionBackgroundSoft ErrorsHard ErrorsCommon Error MessagesProcessorRAMASICLatest AdvancementsProcessorRAMASICSoftwareMSFC IBC Reset6700 Series 'Single-Bit Parity Error' ResetRecommendationsSoft Errors (SEU)Environmental AuditLatest Firmware (Rommon)Thumb ScrewsHard Errors (Malfunction)Hardware http://www.cisco.com/c/en/us/support/docs/routers/7200-series-routers/6345-crashes-pmpe.html (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 reduce parity problems as well. BackgroundWhat is a processor or memory parity error?Parity checking is the storage of an extra binary http://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/116135-trouble-6500-parity-00.html 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 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 ne
Loadbalancing → Spontanious reboot of Cisco 6509Eswitch 12/12/2013 Leave a comment Lately one of our customers Cisco 6509E switches rebooted spontanious. At first sight it looked like https://heggel4.wordpress.com/2013/12/12/spontanious-reboot-of-cisco-6509e-switch/ there was no obvious reason for this problem. After investigation, the reason of the spontanious reboot became clear. The first clue was found when the "show version" command was http://acronyms.thefreedictionary.com/Processor+Memory+Parity+Error run. This was the output (the output is omitted): ! switch#show version System returned to ROM by s/w reset at 07:43:59 gmt Sun Dec 8 2013 (SP by parity error processor memory parity error at PC 0x419EEB88, address 0x0) switch# ! The fat part of the output triggered me, to download the crashinfo from the sup-bootflash. ! show sup-bootflash ! -#- -length- ---date/time---- path -#- ED ---type--- -crc-- -seek- nlen -length- ------date/time------ name 1 .. config 4F161C23 9D14C 21 118988 Apr 13 2012 00:26:20 +02:00 BackupSXH513apr12.bak 2 .. processor memory parity crashinfo 1A1C516D 104FF0 32 425506 Dec 8 2013 07:43:55 +01:00 crashinfo_RP_20131208-074355-gmt ! copy bootflash:/crashinfo_RP_20131208-074355-gmt tftp: ! After investigating the crashinfo I found the following lines: ! 674670: Dec 8 07:43:55: %C6K_PLATFORM-2-PEER_RESET: RP is being reset by the SP %Software-forced reload 07:43:55 gmt Sun Dec 8 2013: Breakpoint exception, CPU signal 23, PC = 0x428A667C --------------------------------------------- Possible software fault. Upon reccurence, please collect crashinfo, "show tech" and contact Cisco Technical Support. --------------------------------------------- After reading this meassage it became clear that the RP is rebooted by the SP, so for further information the logging from the SP has to be investigated. The SP crashinfo can be found: ! show sup-bootflash: ! -#- -length- ---date/time---- path 1 74788836 Sep 24 2009 09:48:00 +02:00 s72033-ipservicesk9_wan-mz.122-33.SXH5.bin 2 33554432 Sep 24 2009 11:57:50 +02:00 sea_log.dat 3 119027 Apr 12 2012 02:09:34 +02:00 BackupSXH513apr12.bak 4 33554432 Apr 13 2012 01:08:52 +02:00 sea_console.dat 5 139998532 Mar 9 2012 11:40:28 +01:00 s72033-ipservicesk9_wan-mz.122-33.SXJ2.bin 6 439014 Dec 8 2013 07:43:58 +01:00 crashinfo_SP_20131208-074355-gmt ! copy sup-bootflash:/crashinfo_SP_20131208-074355-gmt tftp: ! In the SP crashinfo the followi
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