Link-flap Error Detected On Fa0/12
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SwitchingSpanning Tree ProtocolTroubleshoot and AlertsConfiguration Example and TechNotes Errdisable Port State errdisable detect cause link-flap Recovery on the Cisco IOS Platforms Download Print Available bpduguard error detected Languages Download Options PDF (143.8 KB) View with Adobe Reader on a variety of devices cisco link flap detection 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 pagp-flap device 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
Dtp-flap
StateCorrect 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 clea
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Gbic-invalid Error Detected
discuss today's topics with top experts Blogs Read the latest channel-misconfig (stp) error detected tech blogs written by experienced community members >>VIEW ALL POSTS Network technologies and trends « err-disabled loopback How to change an IP address in a HP Procurve Switch What is Service timestamps logging, and how it can be configured Cisco Switch http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/69980-errdisable-recovery.html or a Router? » Aug 17 2008 5:55AM GMT What is the Link-flap error in Cisco Switches? Yasir Irfan Profile: Yasir Irfan Link flap means that the interface continually goes up and down in a Cisco Switch. The interface is put into the errdisabled state if it flaps http://itknowledgeexchange.techtarget.com/network-technologies/what-is-the-link-flap-error-in-cisco-switches/ more than five times in 10 seconds. The common cause of link flap is a Layer 1 issue such as a bad cable, duplex mismatch, or bad Gigabit Interface Converter (GBIC) card. Look at the console messages or the messages that were sent to the syslog server that state the reason for the port shutdown. 13w0d: %PM-4-ERR_DISABLE: link-flap error detected on Fa0/28, putting Fa0/28 in err-disable state Issue this command in order to view the flap values: SRCL-ONC-3550-AS01# sho errdisable flap-values  ErrDisable Reason   Flaps    Time (sec) -----------       ----  -------
pagp-flap                       3      30 dtp-flap                          3      30 link-flap                          5      10 SRCL-ONC-3550-AS01# The interface can be recovered from errdisable state by reenabling the port using the errdisable recovery cause link-flap. This command is used to configure the recovery mechanism so that the interface can be brought out of the disabled state and allowed to try again. You can al» Print Pages: [1] Author Topic: err-disable à¡Ô´¨Ò¡ÍÐäÃä´éºéÒ§¤ÃѺ (Read 5886 times) 0 Members áÅÐ 2 ºØ¤¤Å·ÑèÇä» ¡ÓÅѧ´ÙËÑÇ¢é͹Õé naipoom Layer 4 Posts: 368 ¨Ôµ¾ÔÊÑ +0/-0 err-disable à¡Ô´¨Ò¡ÍÐäÃä´éºéÒ§¤ÃѺ « on: 29 ÁԶعÒ¹ , 2009, 12:54:18 pm » ÊÒà˵شѧµèÍ仹Õé à¡Ô´¨Ò¡ÍÐäÃä´éºéÒ§¤ÃѺC3750#sh errdisable recovery ErrDisable Reason Timer Status----------------- --------------udld Disabledbpduguard Disabledsecurity-violatio Disabledchannel-misconfig Disabledvmps Disabledpagp-flap Disableddtp-flap Disabledlink-flap Disabledl2ptguard Disabledpsecure-violation Disabledgbic-invalid Disableddhcp-rate-limit Disabledunicast-flood Disabledstorm-control Disabledarp-inspection Disabledloopback Disabled¤×ͺҧ·Õè¡è͹˹éÒàËç¹ãªé§Ò¹ä´é»¡µÔ áÅéÇÍÂÙèæ ¡ç err-disable ¤ÃѺ Logged fairy Head Master Layer 7 Posts: 2176 ¨Ôµ¾ÔÊÑ +34/-1 Re: err-disable à¡Ô´¨Ò¡ÍÐäÃä´éºéÒ§¤ÃѺ « Reply #1 on: 29 ÁԶعÒ¹ , 2009, 03:27:36 pm » »¡µÔ ¶éÒâªÇì Recovery Áѹ¡ç¨Ð¢Öé¹ disabled ÍÂÙèáéÅéǹÔÅͧãªé show errdisable detect ´Ù¨Ô Logged á¹Ð¹Ó˹ѧÊ×Í´Õæ ¨Ò¡ UCBOOKhttp://www.ebooks.in.th/ucbookCCNA Labs Walkthrough book one (¤ÙèÁ×͵ÑÇÍÂèÒ§ CCNA ¾ÃéÍÁà©Å àÅèÁ˹Öè§)http://www.ebooks.in.th/ebook/3670/CCNA Labs Walkthrough book twohttp://www.ebooks.in.th/ebook/5137/--- CISCO CCNA LAB SOLUTION CCNP --- naipoom Layer 4 Posts: 368 ¨Ôµ¾ÔÊÑ +0/-0 Re: err-disable à¡Ô´¨Ò¡ÍÐäÃä´éºéÒ§¤ÃѺ « Reply #2 on: 29 ÁԶعÒ¹ , 2009, 06:49:07 pm » Quote from: fairy on 29 ÁԶعÒ¹ , 2009, 03:27:36 pm»¡µÔ ¶éÒâªÇì Recovery Áѹ¡ç¨Ð¢Öé¹ disabled ÍÂÙèáéÅéǹÔÅͧãªé show errdisable detect ´Ù¨Ô¤ÃѺ ¾Í´Õ copy ÊÒà赯 error ÁÒ·Ñé§ËÁ´ ¹èФÃѺ ·Õèà¨ÍºèÍ àÇÅÒ show int status err-dislink-flaploopback¹èÒ¨Ðà¡Ô´¨Ò¡ÍÐääÃѺ Logged mrpao Layer 2 Posts: 99 ¨Ôµ¾ÔÊÑ +1/-0 Re: err-disable à¡Ô´¨Ò¡ÍÐäÃä´éºéÒ§¤ÃѺ « Reply #3 on: 29 ÁԶعÒ¹ , 2009, 08:06:24 pm » Åͧ´ÙµÒÁ link ´éÒ¹ÅèÒ§¹Ð¤ÃѺ http://supportwiki.cisco.com/ViewWiki/index.php/Errdisable_Port_State_Recovery_on_the_Cisco_IOS_Platforms Logged [K]a[Z]e[K]i[M] The End DEV Team Layer 6 Posts: 1296 ¨Ôµ¾ÔÊÑ +8/-0 CCNP Reader Re: err-disable à¡Ô´¨Ò¡ÍÐäÃä´éºéÒ§¤ÃѺ « Reply #4 on: 29 ÁԶعÒ¹ , 2009, 09:28:57 pm » ■ all--Detects every possible cause■ arp-inspection--Detects errors with dynamic ARP inspection■ bpduguard