Pm-4-err_disable Psecure-violation Error Detected On
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SwitchingSpanning Tree ProtocolTroubleshoot and AlertsConfiguration Example and TechNotes Errdisable Port State Recovery on the Cisco IOS Platforms Download Print Available Languages Download Options PDF (143.8 KB) View with Adobe Reader on show port security violations a variety of devices ePub (82.1 KB) View in various apps on iPhone, iPad,
Errdisable Recovery Cause Psecure-violation
Android, Sony Reader, or Windows Phone Mobi (Kindle) (87.6 KB) View on Kindle device or Kindle app on multiple devices Updated:Mar cisco clear port security violation 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
%pm-4-err_disable: Link-flap Error Detected
recovery Command)Recover a Port from Errdisabled 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 debug port security 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. The switches should run Cisco IOSĀ® Software and each switch should have two Fast Ethernet ports that are capable of EtherChannel and PortFast. 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. Background Information Platforms That Use Errdisable The errdisable feature is supported on these Catalyst switches: Catalyst switches that run Cisco IOS Software: 2900XL / 3500XL 2940 / 2950 / 2960 / 2970 3550 / 3560 / 3560-E / 3750 / 3750-E 4000 / 4500 6000 / 6500 Catalyst switches that run Catalyst OS (CatOS)
| View Threaded m4rtntns at gmail Oct31,2014,7:27AM Post #1 of 3 (2452 views) Permalink Under which conditions does port-security consider MAC flap as a security violation?
P Secure
Hi, I have a following very simple setup: http://s30.postimg.org/d0t320dsh/port_sec.png As seen above, PC
Err-disabled Bpduguard
with two NIC's is connected to Cisco Catalyst WS-C4506 switch and both NIC's on PC have the same MAC address security violation error detected 00:00:00:00:00:11. Switch port configuration is identical: interface GigabitEthernet6/41 switchport access vlan 881 switchport mode access switchport port-security maximum 100 switchport port-security switchport port-security aging time 10 switchport port-security aging type inactivity end http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/69980-errdisable-recovery.html interface GigabitEthernet6/42 switchport access vlan 881 switchport mode access switchport port-security maximum 100 switchport port-security switchport port-security aging time 10 switchport port-security aging type inactivity end As seen above, port-security on switch ports is enabled. If I send an unicast frame from PC port eth0 to switch port Gi6/42, then the switch will learn the MAC address in its MAC address table and "Total MAC Addresses" http://www.gossamer-threads.com/lists/cisco/nsp/182260 counter in "sh port-security interface Gi6/42" output will increase from 0 to 1. Now when I send unicast frame from PC port eth1 to switch port Gi6/41, then the switch will not learn the MAC address and "Total MAC Addresses" counter in "sh port-security interface Gi6/41" output will stay 0. In addition, "Last Source Address:Vlan" field stays "0000.0000.0000:0". IMHO this is all expected behavior and this is how the port-security with configuration above should work. However, on a live switch with the very same configuration and HW/SF(WS-X4515 SUP with cat4500-ipbasek9-mz.122-54.SG.bin) as the lab one, I saw a behavior where duplicate MAC address on two ports with the same port-security configuration as above, caused a port-security violation: Oct 30 11:33:06.458 UTC: PSECURE: Violation/duplicate detected upon receiving 0000.5e00.0103 on vlan 123: port_num_addrs 0 port_max_addrs 100 vlan_addr_ct 0: vlan_addr_max 100 total_addrs 853: max_total_addrs 3072 Oct 30 11:33:06.458 UTC: PSECURE: psecure_add_addr_check: Found duplicate mac-address 0000.5e00.0103, It is already secured on Gi4/7 Oct 30 11:33:06.458 UTC: PSECURE: psecure_add_addr_check: Security violation occurred, bring down the interface Oct 30 11:33:06.458 UTC: %PM-4-ERR_DISABLE: psecure-violation error detected on Fa5/2, putting Fa5/2 in err-disable state As I understand this "debug port-security" log, port-security o
MAC! View View unanswered posts View active topics View new posts http://www.networking-forum.com/viewtopic.php?t=33968 View your posts RIP, EIGRP, OSPF, IS-IS, BGP, MPLS, VTP, STP. Post a reply 4 posts Page 1 of 1 seabro Junior https://www.coursehero.com/file/p3t1fi5/011112-PM-4-ERRDISABLE-psecure-violation-error-detected-on-Fa08-putting-Fa08-in/ Member Posts: 88 Joined: Sat Mar 12, 2011 2:19 pm Certs: DCAP, CLP, MCP Port Security Problem / Rogue MAC! Tue error detected Oct 16, 2012 4:23 am Hi all, I had a port going to err-disable because of a port security violation. Strangely, the only host connected is a Dell laptop.Oct 16 08:59:24: %PM-4-ERR_RECOVER: Attempting to recover from psecure-violation err-disable state on Fa0/45Oct 16 08:59:33: %PM-4-ERR_DISABLE: port security violation psecure-violation error detected on Fa0/45, putting Fa0/45 in err-disable stateOct 16 08:59:33: %PORT_SECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC address 0020.4ad7.0608 on port FastEthernet0/45.Oct 16 09:00:32: %PM-4-ERR_RECOVER: Attempting to recover from psecure-violation err-disable state on Fa0/45Oct 16 09:00:40: %PM-4-ERR_DISABLE: psecure-violation error detected on Fa0/45, putting Fa0/45 in err-disable stateOct 16 09:00:40: %PORT_SECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC address 0020.4ad7.0608 on port FastEthernet0/45.Oct 16 09:01:40: %PM-4-ERR_RECOVER: Attempting to recover from psecure-violation err-disable state on Fa0/45Oct 16 09:01:51: %PM-4-ERR_DISABLE: psecure-violation error detected on Fa0/45, putting Fa0/45 in err-disable stateOct 16 09:01:51: %PORT_SECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC address 0020.4ad7.0608 on port FastEthernet0/45.Oct 16 09:02:50: %PM-4-ERR_RECOVER: Attempting to recover from psecure-violation err-disable state on Fa0/45Oct 16 09:02:58: %PM-4-ERR_DISABLE: psecure-violation error detected on Fa0/45, putting Fa0/45 in err-disable stateOct 16 09:02:58: %PORT_SECURITY-2-PS
Upload Documents Write Course Advice Refer your Friends Earn Money Upload Documents Apply for Scholarship Create Q&A pairs Become a Tutor Find Study Resources by School by Literature Guides by Subject Get Instant Tutoring Help Ask a Tutor a Question Use Flashcards View Flashcards Create Flashcards Earn by Contributing Earn Free AccessLearn More > Upload Documents Write Course Advice Refer your Friends Earn MoneyLearn More > Upload Documents Apply for Scholarship Create Q&A pairs Become a Tutor Are you an educator? Log in Sign up Home Oxford University COMPUTER COMPUTER computer CCENT-PC-1 011112 pm 4 errdisable psecure violation error SCHOOL Oxford University COURSE TITLE COMPUTER computer TYPE Notes UPLOADED BY AgentStarRook8776 PAGES 11 Click to edit the document details This preview shows pages 5–8. Sign up to view the full content. View Full Document 01:11:12: %PM-4-ERR_DISABLE: psecure-violation error detected on Fa0/8, putting Fa0/8 in err- disable state 01:11:12: %PORT_SECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC address 0011.a0d4.12a0 on port FastEthernet0/8. 01:11:13: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/8, changed state to down 01:11:14: %LINK-3-UPDOWN: Interface FastEthernet0/8, changed state to down Another switch was connected to this switch port with the wrong cable. An unauthorized user tried to telnet to the switch through switch port Fa0/8. NAT was enabled on a router, and a private IP address arrived on switch port Fa0/8. A host with an invalid IP address was connected to a switch port that was previously unused. Port security was enabled on the switch port, and an unauthorized connection was made on switch port Fa0/8. 16. When configuring a switch to use SSH for virtual terminal connections, what is the purpose of the crypto key generate rsa command? show SSH connected hosts disconnect SSH connected hosts create a public and private key pair show active SSH ports on the switch access the SSH database configuration 17. Which three statements are true about full-duplex operation on an Ethernet network? (Choose three.) There are no collisions in full-duplex mode. A dedicated switch port is required for each node. Hub ports are preconfigured for full-duplex mode. The host network card must detect the availability of the media before transmitting. The host network card and the switch port must both be in full-duplex mode. 18. Refer to the exhibit. If all the switches have a default configuration, how many broadcast doma