Pm-4-err_disable Pagp-flap Error Detected
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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 cisco link flap detection Languages Download Options PDF (143.8 KB) View with Adobe Reader on a variety of devices
Dtp-flap
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 gbic-invalid error detected 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 channel-misconfig (stp) error 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 configurations.
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Linkflaperrdisabled
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How To Clear Err Disabled Port
it can be configured Cisco Switch 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 http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/69980-errdisable-recovery.html means that the interface continually goes up and down in a Cisco Switch. The interface is put into the errdisabled state if it flaps 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 http://itknowledgeexchange.techtarget.com/network-technologies/what-is-the-link-flap-error-in-cisco-switches/ 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 also set the time interval. Errdisable recovery is disabled by default in Cisco Switches; when enabled, the default time interval is 300 seconds. Once you enable the errdisable state you can see the following log in the Cisco switch which is trying to recover the error disable interface (link-flap error) 13w0d: %PM-4-ERR_RECOVER: Attempting to recover from link-flap err-disable state on Fa0/28 Comment RSS Feed Email a friend  Comment on this Post TheFORUMSFOR COMPUTER PROFESSIONALS Log In Come Join Us! Are you aComputer / IT professional?Join Tek-Tips Forums! Talk With http://www.tek-tips.com/viewthread.cfm?qid=1691944 Other Members Be Notified Of ResponsesTo Your Posts Keyword Search One-Click http://www.firewall.cx/cisco-technical-knowledgebase/cisco-switches/883-cisco-switches-errdisable-autorecovery.html Access To YourFavorite Forums Automated SignaturesOn Your Posts Best Of All, It's Free! Join Us! *Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden.Tek-Tips Posting error detected Policies Jobs Jobs from Indeed What: Where: jobs by Link To This Forum! Add Stickiness To Your Site By Linking To This Professionally Managed Technical Forum.Just copy and paste the BBCode HTML Markdown MediaWiki reStructuredText code below into your site. Cisco: Switches Forum at Tek-Tips HomeForumsCommunications RackNetworkingCisco: Switches Forum link-flap err-disabled thread558-1691944 pm-4-err_disable pagp-flap error Forum Search FAQs Links MVPs link-flap err-disabled link-flap err-disabled Carpua (ISP) (OP) 29 Aug 12 04:20 hi all i have a port that keeps going into err-disabled mode and shutdown. i configured err-disabled recovery on the switch but the port still doesn't get back up. below is a log results and err-disabled configuration Aug 29 07:09:20.628: %PM-4-ERR_DISABLE: link-flap error detected on Gi0/42, putting Gi0/42 in err-disable state Aug 29 07:09:45.517: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/35, changed state to down Aug 29 07:09:50.626: %PM-4-ERR_RECOVER: Attempting to recover from link-flap err-disable state on Gi0/42 Aug 29 07:10:19.835: %PM-4-ERR_DISABLE: link-flap error detected on Gi0/42, putting Gi0/42 in err-disable state Aug 29 07:10:49.833: %PM-4-ERR_RECOVER: Attempting to recover from link-flap err-disable state on Gi0/42 Aug 29 07:13:59.122: %PM-4-ERR_DISABLE: link-flap error detected on Gi0/42, putting Gi0/42 in err-disable state Aug 29 07:14:29.120: %PM-4-ERR_RECOVER: Attempting to recover from link-flap err-disable state on Gi0/42 ErrDisable Reason Timer Status ----------------- -------------- bpduguard Enabled channel-misconfig Enabled dhcp-rate-limit
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