UDLD Detection & Error Disable On Cat 6513

Hi
We have a problem with an etherchannel trunk between 2 Cat 6513's. The etherchannel is 8Gb split across 2 Copper 10/100/1000Mb 16 port cards in each chassis. The trunk uses ports 13 - 16 on slot 5 in one chassis to 13 - 16 on slot 5 in the other chassis and 13 - 16 on slot 6 in one chassis to 13 - 16 in slot 6 on the other chassis.
We appear to have had a UDLD Detection which error disabled all 4 of the links from slot 6 to slot 6 at the same time. IE ports 13 - 16 on slot 6 of both chassis went into error disabled state.
Could this be a ASIC hardware problem on one of the cards? If so, how do we establish which end of the trunk the problem exists? All other connections on these slot 6 cards are working fine.

UDLD is a protocol that discovers if communication over a link is one-way only, and therefore partially broken. A damaged fiber cable or other cabling/port issue could cause this one-way only communication. Spanning tree loops can occur with this problem. UDLD allows the port to detect a unidirectional link, and can be configured to put a port in errDisable state when it detects this condition.

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Error disabled ports

I have a 3550 switch that gets a error-disabled copper ports. There is no errors ont the port. What else would cause it to be disabled?

Although there is no error on the port , there should be an error message in the log that should tell you the reason why the port got error disabled like port security violation , loopback detection , etherchannel misconfig etc.
You can enable errordisable recovery for all different causes by setting a timer. What happens is once this timer expires , the port is brough out of error dsiabled state.
Here are some of the useful commands.
D-C3550-2A(config)#errdisable ?
detect Error disable detection
recovery Error disable recovery
D-C3550-2A(config)#errdisable recovery ?
cause Enable error disable recovery for application
interval Error disable recovery timer value
Hope this helps.
Salman Z.

EEM on port error-disable due to UDLD

I would like to ask from the EEM community for some assistance in regards to crafting an EEM script for an ME-3800X. We have one or two appliances whereby the only uplink (TenGigabitEthernet0/1 and/or TenGigabitEthernet0/2) goes into error-disable and caused by UDLD. What I am looking for is a script to do the following:
1. If the ports TenGigabitEthernet0/1 and/or TenGigabitEthernet0/2 goes into error-disable caused by UDLD or link-flap then disable the port, wait for 5 seconds, enable the port;
2. Wait for 15 seconds and send an email.
I only want this EEM to work on the TenGigabitEthernet interfaces and I do not want the EEM script to do this on the access ports.
Error-disable recovery is a global option and there's no option to limit on a per-interface level.
Thank you in advance.

Thanks for responding, Joe.
We were not able to take down the error messages but I believe they error messages could be:
%UDLD-4-UDLD_PORT_DISABLED: UDLD disabled interface Te0/2, unidirectional link detected
%PM-4-ERR_DISABLE: udld error detected on Te0/2, putting Te0/2 in err-disable state
Could an EEM script be created when an error message or an event of "unidirectional link detected" occurs, do the following:
1. In privilege mode, issue the command "udld reset".
2. Wait for 30 seconds and then send an email.
Thanks for your assistance and support, Joe.

Cisco Prime Infrastructure 2.1 error-disable alert

We have a cisco PI 2.1 managing switches and a lot of switchports have BPDUGuard enabled. When occur error-disable , request send email notification to administrator .
By default, when a port of a switch goes down, the Prime generates alarm for that. (this is a problem, because every laptop disconnection will generate alarm for administrator)
Can i change the alert just for error-disable and how to ?
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Causes of Errdisable
This feature was first implemented to handle special collision situations in which the switch detected excessive or late collisions on a port. Excessive collisions occur when a frame is dropped because the switch encounters 16 collisions in a row. Late collisions occur after every device on the wire should have recognized that the wire was in use. Possible causes of these types of errors include:
A cable that is out of specification (either too long, the wrong type, or defective)
A bad network interface card (NIC) card (with physical problems or driver problems)
A port duplex misconfiguration
A port duplex misconfiguration is a common cause of the errors because of failures to negotiate the speed and duplex properly between two directly connected devices (for example, a NIC that connects to a switch). Only half-duplex connections should ever have collisions in a LAN. Because of the carrier sense multiple access (CSMA) nature of Ethernet, collisions are normal for half duplex, as long as the collisions do not exceed a small percentage of traffic.
There are various reasons for the interface to go into errdisable. The reason can be:
Duplex mismatch
Port channel misconfiguration
BPDU guard violation
UniDirectional Link Detection (UDLD) condition
Late-collision detection
Link-flap detection
Security violation
Port Aggregation Protocol (PAgP) flap
Layer 2 Tunneling Protocol (L2TP) guard
DHCP snooping rate-limit
Incorrect GBIC / Small Form-Factor Pluggable (SFP) module or cable
Address Resolution Protocol (ARP) inspection
Inline power
Note: Error-disable detection is enabled for all of these reasons by default. In order to disable error-disable detection, use the no errdisable detect cause command. The show errdisable detect command displays the error-disable detection status.

ISE error disable interface

Dears
After configuring DOT1x on access ports , some ports show error disabled without enabling the port-security , is their any way to increase the number of MAC addresses allowed on the port ? , is it possible to disable this feature
Sent from Cisco Technical Support iPhone App

Hi Eng.malak,
The port config provided by you the interface GigabitEthernet1/0/2 is configured for MDA that means an IP phone and a single host behind the IP phone are authenticated independently, even though both the IP phone and host machine are connected to a single switch port on the switch. If more than once device is detected in either domain, a security violation will be triggered. This can be a problem when a phone fails to authenticate properly. If a phone fails authentication, then the switch does not receive the "device-traffic-class=voice" VSA from the radius server and the switch will assume that the failed device was in the data domain. However if there is already a data device behind the phone, there will be now 2 devices in the data domain, and a security violation is triggered. On this port only 2 MAC addresses are allowed. The switch place the client machine in a data vlan and the IP phone in a voice vlan.
Configure the violation mode. The keywords have these meanings:
authentication violation shutdown | restrict | protect | replace}
•shutdown-Error disable the port.
•restrict-Generate a syslog error.
•protect-Drop packets from any new device that sends traffic to the port.
•replace-Removes the current session and authenticates with the new host.
Configuring 802.1x Violation Modes
http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_55_se/configuration/guide/sw8021x.html#wp1324086
~BR
Jatin Katyal
**Do rate helpful posts**

IPS on the stick - ECLB - UDLD doesn't disable the port during IPS reload

Subject said it all.
I have ECLB configured on Catalyst 3850:
udld enable
udld message time 2
interface TenGigabitEthernet1/1/1
switchport trunk native vlan 4094
switchport trunk allowed vlan 1,1500,4094
switchport mode trunk
udld port aggressive
channel-group 1 mode on
interface TenGigabitEthernet2/1/1
switchport trunk native vlan 4094
switchport trunk allowed vlan 1,1500,4094
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channel-group 1 mode on
interface Port-channel1
description PORTCHANNELS TO IPS
switchport trunk native vlan 4094
switchport trunk allowed vlan 1,1500,4094
switchport mode trunk
IPS interfaces are hardcoded to 10Gb.
Whenever I reload or power cycle IPS, interface stays up entire time and doesn't get error disabled, which pretty much ends up with black holing almost entire traffic. Can anyone help me with this?

Hello Praveer,
Did you find out the issue with it? I
Cheers,
Victor

Detection Error 2100 - M500 SSD in Lenovo X240 laptop

I have a new Lenovo X240 out of the box. I immediately upgraded with a Crucial M500 SSD 240mb drive. The computer is running a fresh install of Windows 7 64-bit. The BIOS on the laptop is the most current. The firmware on the M500 is the most current. It seems that every several times I start or reboot the system I receive "DETECTION ERROR 2100". After powering off the machine and powering it on again the computer will boot to Winddows. I have seen numerous posts about this issue between Crucial vs. Lenovo. I've tried every suggested fix to no avail. I have tried the configuration using an identical, brand new M500 SSD with the same results. Am I missing something?
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HP LaserJet P2015DN and HP 2550 Error: MSG 0x0073c35f [CAT 7/3 STD 50015 ]

Hello,
We've installed printer 2015DN in our network with drivers 2015 PCL or 2015 PS.
all works fine except when printing from Peregrine Service Center V5. then we get the errormessage
Error: MSG 0x0073c35f [CAT 7/3 STD 50015 ]
Category: Underlying system generated error [Toolkit error]
Function:
Xvt_dm_post_page_setup
Xvt_dlg_create_def_xbt_app_create
File:WPRN.C Line 763
Printing to other HP models like laserjet 4015 & 4050 do not give this issue.
We find a workaround to print on HP2015 with drivers of HP LaserJet 1320 PS but with
this all the PDF printing are very very slow.
What can be done to fix and print from Peregrine on HP 2015 (Without to use Universal drivers)?
Someone can help us about this issue?
Thank's,
T0FF

don't install the software. unpack, go to device manager, rightclick printer, update driver, select driver from extracted files

Fix for ORA-00060: Deadlock detected errors

Hello APEX community,
in the last days we are hitting more and more frequent the ORA-00060: Deadlock detected error in one of our applications. Logged an SR with Oracle Support but so far not too much help, except pointing to some older bugs:
Bug 6618662: APEX APPEARS TO BE CAUSING DEADLOCK - CASE COLLECTION or Bug 7587013: INSERTING AND DELETING WWV_FLOW_DATA CAUSES DEADLOCK, which do not look at all appealing as the first bug was logged in Nov 2007 and the resolution was delayed from version 3.1, to 4.0 and even to 4.1, while de second was logged in Nov 2008 and not much happened with it.
I am curious how many other users are hitting the same issue and which workarounds found for the problem. For example yesterday I could see 12 such errors in my log, today already 3.
Florin

Hi John,
here it is: http://www.moyersoen.be/auction/1442/ or http://www.moyersoen.be/pls/apex/f?p=2008:11:0::::P11_AUCTION_ID:1442. Normally the page response time is < 0.20, but from time to time it goes up to more than 20 seconds and at those times I can see also the ORA-00060: Deadlock detected errors.
Looks like the users are clicking twice refresh for that page. I am trying now to build a testcase that reproduce the issue easily.
Florin

Campus Manager report - Ports in error Disabled state

Hi,
I have LMS 3.2 and I wonder how Campus Manager collects information from the switch to generate a report of discrepancies, namely a report of "Ports in Error Disabled state"??
I find that I have ports in errDisabled state but Campus Manger doesn´t show this information in "Ports in Error Dissabled state" report. What could be the problem?
Thanks.

Hi,
Campus Manager do snmpwalk on the ciscoErrDisableMIB to get the status of the error disabled ports.
Thanks,
Gaganjeet Singh

Nexus 5500 - Fabricpath Core Port - Error disabled. Reason:DCX-No ACK in 100 PDUs

Has anyone seen Fabricpath Core Interfaces between two Nexus 5596UP switches error-disabled because of missing DCBX Acks after 50mins?
I do not see interface errors and the peer is another 5500.
Both switches are running 5.1(3)N2(1) with this port config:
int e1/3
switchport mode fabricpath
! Cisco 5m Twinax cables
Log messages
2012 May 25 17:40:59 nexus1 %L3VM-5-FP_TPG_INTF_DOWN: Interface Ethernet1/3 down in fabricpath topology 0 - Interface down
2012 May 25 17:40:59 nexus1 %ETHPORT-5-IF_DOWN_NONE: Interface Ethernet1/3 is down (None)
2012 May 25 17:40:59 nexus1 %ISIS_FABRICPATH-5-ADJCHANGE: isis_fabricpath-default [3365] P2P adj L1 nexus5 over Ethernet1/3 - DOWN (Delete All) on MT-0
2012 May 25 17:40:59 nexus1 %CDP-5-NEIGHBOR_REMOVED: CDP Neighbor nexus5(FOX1550GDH1) on port Ethernet1/3 has been removed
2012 May 25 17:40:59 nexus1 %LLDP-5-SERVER_REMOVED: Server with Chassis ID 547f.ee63.fa88 Port ID Eth1/1 on local port Eth1/3 has been removed
2012 May 25 17:40:59 nexus1 %ETHPORT-2-IF_DOWN_ERROR_DISABLED: Interface Ethernet1/3 is down (Error disabled. Reason:DCX-No ACK in 100 PDUs)
Robert

Can you send the output of
show lldp interface ethernet 1/3
show lldp dcbx interface ethernet 1/3
a workaround may be to disable lldp on both sides on these physical interfaces

Preflight detected errors - overset text (1)

Hi
I have copied / pasted text from a Word document and tried 2 ways to place it in my InDesign CS6 document
(1) putting copied text into a prepared text box
(2) using the 'text box' that 'came with' the copied text (enlarged to fit area)
each time the dreaded 'red box with a + ' sign inside appears on the rt. side of the 'finalised' text
and 1 error shows at the bottom which is the Preflight detected error - overset text
I have loads of other text in my document but none copied/pasted
Writing the text manually into the document is not an option in this case
Do I have to format it somehow? I would really appreciate a really simple A-Z step answer for this old gal
cheers - any help will really stop my hair from greying any further Lou

Does the text contain special glyphs that require a font with Maori support? Id not then you can edit the styles to change the font (or, on the strong probability that the Word file doen't really use styles, you can use Find Font to replace it). if you do need Maori support, you should install a font that supports it, like Arial Maori, on the computer. ID uses any fonts installed normally for the OS (presuming they are not really badly made) or that are located in the private Adobe or InDesign fonts folders.

[svn:bz-trunk] 21394: bug fix for watson 2887837 Not getting duplicate session detected error when same flex client id is used from two different HTTP sessions in CRX .

Revision: 21394
Revision: 21394
Author:   [email protected]
Date:     2011-06-16 12:34:13 -0700 (Thu, 16 Jun 2011)
Log Message:
bug fix for watson 2887837 Not getting duplicate session detected error when same flex client id is used from two different HTTP sessions in CRX.
get the sessions id before we invalidate the duplicate session.
Checkintests pass
Modified Paths:
    blazeds/trunk/modules/core/src/flex/messaging/endpoints/BaseHTTPEndpoint.java

For our profect I think this issue was caused as follows:
Believing that remoting was full asynchronous we fired a 2 or 3 remote calls to the server at the same time ( within the same function ) - usually when the users goes to a new section of the app.
This seemed to trigger the duplicate http session error since according to http://blogs.adobe.com/lin/2011/05/duplication-session-error.html two remote calls arriving before a session is created will cause 2 sessions to be created.
Our current solution ( too early to say it works ) is to daisy chain the multiple calls together .
Also there seemed to be an issue where mobile apps that never quit ( thanks Apple! ) caused the error when activated after a few hours.
I guess the session expires on the server and the error above occurs on activation.
So the mobile apps now ping the server with a remote call when activated after sleeping for more than one hour.
All duplicate http errors are silently caught and reported.
Fingers crossed we won't get any more!

Detect error message on the screen

How do I detect error message on the windows 2000 screen? I need to detect any error message appearing on the screen
Thank you,
Jeff

You mean any kind of message generated by any kind of program, whether Java or not?

[svn:fx-trunk] 21141: Bug: 2780176 - Logging and logging out multiple times in LCDS can cause duplicate session detected errors .

Revision: 21141
Revision: 21141
Author:   [email protected]
Date:     2011-04-26 06:40:39 -0700 (Tue, 26 Apr 2011)
Log Message:
Bug: 2780176 - Logging and logging out multiple times in LCDS can cause duplicate session detected errors.
QA: Yes
Doc: No
Checkintests: Pass
Details: When a logout was followed by an immediate login, sometimes the server would throw duplicate session detected errors. This was because when logout happened, a fire-and-forget disconnect message was sent to the server that established a new session, and if the subsequent login happened before disconnect ACK returned from the server, that would establish another session and hence the error. The fix is to insert a slight delay between disconnect and ResultEvent dispatching. This way, disconnect has a chance to return before a login is performed.
Modified Paths:
    flex/sdk/trunk/frameworks/projects/rpc/src/mx/messaging/ChannelSet.as

You've got an incompatible Logitech driver and java was incompletely uninstalled.
You may have a problem with the Wacom driver.
I don't know if fixing those things will help.
There also a few window server errors, but I don't know if they are causal.
If you can note the time of the hangs, that might help narrow it down in the logs.

UDLD Detection & Error Disable On Cat 6513

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