Bpduguard Error Detected On Gi0/3 Putting Gi0/3 In Err-disable State
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SwitchingSpanning Tree ProtocolTroubleshoot and AlertsConfiguration Example and TechNotes Errdisable Port State pm-4-err_disable link-flap error detected Recovery on the Cisco IOS Platforms Download Print Available err disabled reason loopback Languages Download Options PDF (143.8 KB) View with Adobe Reader on a variety of devices pm-4-err_disable bpduguard error detected ePub (82.1 KB) View in various apps on iPhone, iPad, Android, Sony Reader, or Windows Phone Mobi (Kindle) (87.6 KB) View on Kindle device err-disabled cisco or Kindle app on multiple devices Updated:Mar 23, 2016 Document ID:69980 ContentsIntroductionPrerequisitesRequirementsComponents UsedBackground InformationPlatforms That Use ErrdisableErrdisableFunction of ErrdisableCauses of ErrdisableDetermine If Ports Are in the Errdisabled StateDetermine the Reason for the Errdisabled State (Console Messages, Syslog, and the show errdisable recovery Command)Recover a Port from Errdisabled StateCorrect
%ethcntr-3-loop_back_detected: Loop-back Detected
the Root ProblemReenable the Errdisabled PortsVerifyTroubleshootRelated Information Introduction This document defines the errdisabled state, describes how to recover from it, and provides examples of errdisable recovery. This document uses the terms errdisable and error disable interchangeably. Customers often contact Cisco Technical Support when they notice that one or more of their switch ports have become error disabled, which means that the ports have a status of errdisabled. These customers want to know why the error disablement happened and how they can restore the ports to normal. Note: The port status of err-disabled displays in the output of the show interfaces interface_number status command. Prerequisites Requirements There are no specific requirements for this document. Components Used In order to create the examples in this document, you need two Cisco Catalyst 4500/6500 Series Switches (or the equivalent) in a lab environment with cleared conf
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Pm-4-err_disable Channel-misconfig (stp) Error Detected
Vista, 7Windows 8 & Windows 8.1Windows 2000 ServerWindows 2003 ServerWindows 2012 line protocol is down (err-disabled) ServerLinuxIntroduction To LinuxLinux AdministrationSystem and Network ServicesOpenMosix- Linux SupercomputerMore ContentHot Product ReviewsSecurity ArticlesGFI Network SecurityGFI LanGuard: Network errdisable recovery cause psecure-violation Security ScannerGFI WebMonitor: Web Security & MonitoringE-mail Security White PapersCloud-Based SolutionsFree Security ServicesNetsparker Web Application Security ScannerManageEngineOpManager - Network Monitoring & ManagementOther ArticlesWhitepapersIT Books - Certification Guide ReviewsFCX http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/69980-errdisable-recovery.html RelatedFree Cisco LabCisco Password DecoderNetwork ToolsDownloadsForum Friday, 07 October 2016 HomeCiscoCisco SwitchesErr-disabled Port State, Enable & Disable Autorecovery Feature Hot Downloads Network Security Scanner Free Download Free Hyper-V & VMware Backup Get 2 VMs for FREE, forever! Free Bandwidth Monitoring Free Download Free Bandwidth Monitoring Free Download Web Monitoring & Security Free Download Free Network Monitoring Manage http://www.firewall.cx/cisco-technical-knowledgebase/cisco-switches/883-cisco-switches-errdisable-autorecovery.html your Network! Free Bandwidth Monitoring Free Download Network Patch Scanner Free Download Network Security Scanner Free Download Err-disabled Port State, Enable & Disable Autorecovery Feature Written by Administrator. Posted in Cisco Switches - Catalyst Switch Configuration 4.34482758621 1 1 1 1 1 Rating 4.34 (29 Votes) TweetErrdisable is a feature that automatically disables a port on a Cisco Catalyst switch.When a port is error disabled, it is effectively shut down and no traffic is sent or received on that port. The error disabled feature is supported on most Catalyst switches running the Cisco IOS software. Including all the following models: Catalyst 2940 / 2950 / 2960 / 2960S Catalyst 3550 / 3560 / 3560-E / 3750 / 3750-E Catalyst 4000 / 4500 / 4507R Catalyst 6000 / 6500 The Errdisable error disable feature was designed to inform the administrator when there is a port problem or error. The reasons a catalyst switch can go into Errdisable mode and shutdown a port are many and include: Duplex
IP isWhoisCalculatorTool PointsNewsNews tip?ForumsAll ForumsHot TopicsGalleryInfoHardwareAll FAQsSite FAQDSL FAQCable TechAboutcontactabout uscommunityISP FAQAdd ISPISP Ind. ForumsJoin Search similar:Cisco SAP-1602i connected to 2960 trunk port[HELP] Transit VRF Question[Config] Performance due to VLAN, incomplete STP, or loop backs?[Config] Cisco Switches Trying to Carry a VLAN's trafficCisco 887VA-M-K9 can't ping local LAN or the http://www.dslreports.com/forum/r30125337-HELP-Figuring-out-the-reason-behind-err-disabled-loopback other way around Forums → Equipment Support → Hardware By Brand → Cisco → [HELP] Figuring out the reason behind err-disabled loopback. uniqs1518 Share « VLAN question • A little update on daily fun » techsup1983join:2013-03-23 techsup1983 Member 2015-Jun-20 4:47 am [HELP] Figuring out the reason behind err-disabled loopback.Hello all.We have a core switch (WS-C3650-48PD) and there are ports which keep showingPort Name Status Reason Err-disabled error detected VlanGi2/0/19 err-disabled loopbackis it a good idea to do the no keepalives command on the ports or would there be a way to get more information.What would be the best way to troubleshoot this?Please ask me for anything i've not mentioned. Thanks. · actions · 2015-Jun-20 4:47 am · Network GuyPremium Memberjoin:2000-08-25New Yorkkudos:3 Network Guy Premium Member 2015-Jun-20 9:49 am Please draw up a quick and bpduguard error detected dirty MS Paint diagram of your topology, particularly where your 3650 connects to other switches. · actions · 2015-Jun-20 9:49 am · markysharkeyPremium Memberjoin:2012-12-20united kingdkudos:3 markysharkey to techsup1983 Premium Member 2015-Jun-21 11:52 am to techsup1983err-disable loopback could be because storm control is enabled on the port and it keeps seeing BPDU's and/or traffic from a loop.As well as the diagram Network Guy has asked for lets have see the output for the following:show run int gi 2/0/19 sho int gig 2/0/19 sho int trunk shp spanning-tree vlan x (where x is the native VLAN) The only time I see a port with the spanning-tree port-state listed as loopback is where every switch in a topology has had spanning tree disabled except for one. I used to demo this in a lab environment when I taught CCNA and was showing switching loops and how to deal with them. · actions · 2015-Jun-21 11:52 am · HELLFIREMVMjoin:2009-11-25kudos:31 HELLFIRE to techsup1983 MVM 2015-Jun-21 1:51 pm to techsup1983My immediate thoughts, we need the following :- Config of said 3650- syslogs from said 3650, especially at the time of the errdisable- is the err-disabling interface RJ45/copper or fiber/spf?and as stated, a