Troubleshoot strange OSPF instability

This one's got me stumped. some of our core L3 routers will just up lose their neighbors. I'm logging adjaceny changes and they just go to a DOWN state and then quickly (sometimes 2 seconds, sometimes a minutes) going through the neighbor stages (init, 2-way, etc)
I've checked layer2 counters and spanning-tree and they look OK. It's happening on all 5 of our core campus routers (6500s with L3 engines).
what is even stranger is sometimes the 6500s will lose their 7200 WAN router neighbor as well. There isn't really a pattern.
Can this be processor? OSPF has too many DB entires for an area?
Thanks in advanced. I was tempted to turn on SPF debugging.
Logg messages from one ospf router. Notice going directly from FULL to INIT.
May 25 18:17:35.588: %OSPF-5-ADJCHG: Process 1, Nbr 172.21.191.2 on Port-channel
1.99 from [b]FULL to INIT, 1-Way[/b]
May 25 18:18:29.877: %OSPF-5-ADJCHG: Process 1, Nbr 172.21.191.2 on Port-channel
1.99 from INIT to 2WAY, 2-Way Received
May 25 18:18:29.877: %OSPF-5-ADJCHG: Process 1, Nbr 172.21.191.2 on Port-channel
1.99 from 2WAY to EXSTART, AdjOK?
May 25 18:18:29.877: %OSPF-5-ADJCHG: Process 1, Nbr 172.21.191.2 on Port-channel
1.99 from EXSTART to EXCHANGE, Negotiation Done
May 25 18:18:29.897: %OSPF-5-ADJCHG: Process 1, Nbr 172.21.191.2 on Port-channel
1.99 from EXCHANGE to LOADING, Exchange Done
May 25 18:18:29.897: %OSPF-5-ADJCHG: Process 1, Nbr 172.21.191.2 on Port-channel
1.99 from LOADING to FULL, Loading Done
May 25 18:21:16.749: %OSPF-5-ADJCHG: Process 1, Nbr 172.21.191.2 on Port-channel
1.99 from FULL to INIT, 1-Way
May 25 18:21:19.937: %OSPF-5-ADJCHG: Process 1, Nbr 172.21.191.2 on Port-channel
1.99 from INIT to 2WAY, 2-Way Received
May 25 18:21:26.749: %OSPF-5-ADJCHG: Process 1, Nbr 172.21.191.2 on Port-channel
1.99 from 2WAY to EXSTART, AdjOK?
May 25 18:21:29.937: %OSPF-5-ADJCHG: Process 1, Nbr 172.21.191.2 on Port-channel
1.99 from EXSTART to EXCHANGE, Negotiation Done
May 25 18:21:29.965: %OSPF-5-ADJCHG: Process 1, Nbr 172.21.191.2 on Port-channel
1.99 from EXCHANGE to LOADING, Exchange Done
May 25 18:21:29.965: %OSPF-5-ADJCHG: Process 1, Nbr 172.21.191.2 on Port-channel
1.99 from LOADING to FULL, Loading Done

Well its still happening. This time I've captured the problem with "debup ip ospf adjacency".
What is concerning is some of these messages. Bad sequence number and neighbor going from full to exchstart. I still can't see any underlying layer1/2 problems.
Jun 4 09:16:21.178: OSPF: Rcv DBD from 172.21.190.5 on Port-channel1.3 seq 0x16
7A opt 0x2 flag 0x7 len 32 state FULL
Jun 4 09:16:21.178: OSPF: Bad seq received from 172.21.190.5 on Port-channel1.3
Jun 4 09:16:21.178: %OSPF-5-ADJCHG: Process 1, Nbr 172.21.190.5 on Port-channel
1.3 from FULL to EXSTART, SeqNumberMismatch
Jun 4 09:16:21.178: OSPF: Send DBD to 172.21.190.5 on Port-channel1.3 seq 0x6ED
opt 0x2 flag 0x7 len 32
Jun 4 09:16:21.182: OSPF: Rcv DBD from 172.21.190.5 on Port-channel1.3 seq 0x6E
D opt 0x2 flag 0x2 len 1472 state EXSTART
Jun 4 09:16:21.182: OSPF: NBR Negotiation Done. We are the MASTER
Jun 4 09:16:21.182: %OSPF-5-ADJCHG: Process 1, Nbr 172.21.190.5 on Port-channel
1.3 from EXSTART to EXCHANGE, Negotiation Done
Jun 4 09:16:21.182: OSPF: Send DBD to 172.21.190.5 on Port-channel1.3 seq 0x6EE
opt 0x2 flag 0x3 len 1472
Jun 4 09:16:21.186: OSPF: Rcv DBD from 172.21.190.5 on Port-channel1.3 seq 0x6E
E opt 0x2 flag 0x2 len 632 state EXCHANGE
Jun 4 09:16:21.186: OSPF: Send DBD to 172.21.190.5 on Port-channel1.3 seq 0x6EF
opt 0x2 flag 0x3 len 632
Jun 4 09:16:21.186: OSPF: Rcv DBD from 172.21.190.5 on Port-channel1.3 seq 0x6E
F opt 0x2 flag 0x0 len 32 state EXCHANGE
Jun 4 09:16:21.186: OSPF: Send DBD to 172.21.190.5 on Port-channel1.3 seq 0x6F0
opt 0x2 flag 0x1 len 32
Jun 4 09:16:21.190: OSPF: Rcv DBD from 172.21.190.5 on Port-channel1.3 seq 0x6F
0 opt 0x2 flag 0x0 len 32 state EXCHANGE
Jun 4 09:16:21.190: OSPF: Exchange Done with 172.21.190.5 on Port-channel1.3
Jun 4 09:16:21.190: %OSPF-5-ADJCHG: Process 1, Nbr 172.21.190.5 on Port-channel
1.3 from EXCHANGE to LOADING, Exchange Done
Jun 4 09:16:21.190: OSPF: Synchronized with 172.21.190.5 on Port-channel1.3, st
ate FULL
Jun 4 09:16:21.190: %OSPF-5-ADJCHG: Process 1, Nbr 172.21.190.5 on Port-channel
1.3 from LOADING to FULL, Loading Done

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    The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
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    I called him to get more clarification, but all I really got out of it was that, if you don’t use exchange which is secure via port 443, then your other option is to use smtp.  And then he said something about how relay, iron ports, and authenticated accounts work together to make it secure.  I know it makes me sound a lot more inept than I am, but all that made little sense to me.  What I gather, is… that by selecting SSL when configuring your client, it makes it so that your login info and mail content is safe.  Sorry, I can’t provide a more cohesive and comprehensive explanation, but I think the bottom line is that they have combined a non-secure protocol with other stuff to make it secure.
    So, I'm hoping that checking SSL and using port 25 somehow solves the problem to the satisfaction of our IT professionals at the University ...
    Again, thanks for taking the time to educate the rest of us!

  • IOS 8.1 installed yesterday has spoilt my iPad 2! There are no keyboard, message or app sounds, performance is now sluggish, juddery and strange, battery is draining fast and it no longer security locks when put to sleep.

    I am so cross because iOS 8.1 installed yesterday has ruined my iPad 2! There are now no keyboard, message or app sounds, performance is slow, juddery and strange, the battery is draining fast and the iPad no longer security locks when put to sleep.  I have checked all the settings, done a number of resets and really wish I hadn't bothered and stayed with iOS 7 when it all worked like a dream.  I thought that by waiting until 8.1, teething problems would have been fixed and I am just horrified that there is no going back!  I am not the only iPad owner that has this set of problems so why didn't you warn us Apple!  What are you going to do to help us?  I do not want to be forced into buying a newer version of iPad because you broke this one!

    In spite of the fact that you said you checked the settings, I still believe that you have system sounds muted.
    System sounds can be muted and controlled two different ways. The screen lock rotation can be controlled in the same manner as well.
    Settings>General>Use Side Switch to: Mute System sounds. If this option is selected, the switch on the side of the iPad above the volume rocker will mute system sounds.
    If you choose Lock Screen Rotation, then the switch locks the screen. If the screen is locked, you will see a lock icon in the upper right corner next to the battery indicator gauge.
    If you have the side switch set to lock screen rotation then the system sound control is in the control center if you are running iOS 7. Swipe up from the bottom of the screen to get to control center . Tap on the bell icon and system sounds will return.
    If you have the side switch set to mute system sounds, then the screen lock can be accessed in the same manner as described above.
    This support article from Apple explains how the side switch works.
    http://support.apple.com/kb/HT4085
    AS for your other issues, have you done any other troubleshooting like resetting your iPad, resetting all settings or doing a complete factory reset?

  • AnyConnecy VPN and Split-tunnel ACL - Strange...

    Hi,
    I have ACL as follows and applied on AnyConnect VPN group as split-tunel value ACL.
    access-list SPLIT-ACL extended permit tcp host 192.168.200.63 172.16.1.0 255.255.255.0 eq www
    access-list SPLIT-ACL extended permit tcp host 192.168.200.63 172.16.1.0 255.255.255.0 eq https
    When I connected with AnyConnect client, I can ping to 192.168.200.63 and also telnet to port 80. However I can not telnet to port 443. Strange thing is I do not see any hits on above ACL, morever I'm wondering how cam the ICMP is working and why it does not stop on this ACL..?
    Phase: 4
    Type: ACCESS-LIST
    Subtype:
    Result: DROP
    Config:
    Implicit Rule
    Additional Information:
    Forward Flow based lookup yields rule:
    in  id=0x78e03140, priority=11, domain=permit, deny=true
            hits=113713, user_data=0x5, cs_id=0x0, use_real_addr, flags=0x0, protocol=0
            src ip/id=0.0.0.0, mask=0.0.0.0, port=0, tag=0
            dst ip/id=0.0.0.0, mask=0.0.0.0, port=0, tag=0 dscp=0x0
            input_ifc=outside, output_ifc=any
    When I did the packet-tracer both ICMP and http it just drop on Phase 4..as bellow, I just want to know what this ACL and where its been applied to..?
    What is the correct syntax for packet-tracer command when troubleshooting AnyConnect VPN to check access inside/dmz server..?
    I have used as follows:
    packet-tracer input outside icmp 172.16.1.1 0 8 192.168.200.63 details
    Appreciate if someone can help me out on this..
    thanks

    To start with it is not ideal to configure a port based split tunnel. It is not support and will give you weird results like one you are experiencing. You should use standard access-list for the split tunnel and to restrict the users to the following port use vpn filter.
    As far as packet tracer is concerned for the VPN client if you use the outside interface as source it will never work the reason is the connection between the ASA and the client is of real IP address (Public) and the traffic that you are testing with is a VPN encrypted traffic your ASA's outside interface doesn't know what is 172.16.1.1, he will check it against the outside access-list and will drop it.
    So in your case i would strongly recommed that use standard access-list for the split tunnel and to restrict the user to specific port use vpn filter. Following are the links to configure the same:
    Allow Split Tunnel for Anyconnect:
    http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a0080975e83.shtml
    Configure VPN filter (Its for site to site and remote access but it works the same for Anyconnect):
    http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a00808c9a87.shtml
    Thanks
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  • I've been using firefox for my macbook pro for the last three years but lately when it starts up, I hear a strange piano chord play. Have others experienced it?

    Only recently has Firefox for my macbook pro been acting strange when starting up. I will hear a piano chord play only once when the tabs are loading. Over the past two-three weeks on daily usage, this has happened three times. I'm just concerned my macbook has a virus/bug or if this can be resolved with changing a preference/setting in Firefox. I don't believe this is a problem with my computer itself and I have checked the notification alert sounds and none are the piano chords I'm hearing. I am currently using two add-ons: Tabs-mix plus and FVD Speed Dial if that helps.

    Does it happen when you start up in Safe Mode?
    '''Try Firefox Safe Mode''' to see if the problem goes away. [[Troubleshoot Firefox issues using Safe Mode|Firefox Safe Mode]] is a troubleshooting mode that temporarily turns off hardware acceleration, resets some settings, and disables add-ons (extensions and themes).
    '''If Firefox is open,''' you can restart in Firefox Safe Mode from the Help menu:
    * Click the menu button [[Image:New Fx Menu]], click Help [[Image:Help-29]] and select ''Restart with Add-ons Disabled''.
    '''If Firefox is not running,''' you can start Firefox in Safe Mode as follows:
    * On Windows: Hold the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
    * On Mac: Hold the '''option''' key while starting Firefox.
    * On Linux: Quit Firefox, go to your Terminal and run ''firefox -safe-mode'' <br>(you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
    When the Firefox Safe Mode window appears, select "Start in Safe Mode".
    ;[[Image:SafeMode-Fx35]]
    '''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, theme, or hardware acceleration. Please follow the steps in the [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]] article to find the cause.
    ''To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
    When you figure out what's causing your issues, please let us know. It might help others with the same problem.

  • Performance (slow) and (maybe) problems doing the troubleshooting steps

    I had noticed Time Machine backups taking longer and having more of a performance hit when they were happening, so I decided to check things out.
    Based on some forum postings, I decided to try some of the steps outlined in the main "troubleshooting" thread.
    Bottom line: I ended up at the Repair/Verify Disk step (A5) in the troubleshooting steps and since I'm using a Time Capsule, proceeded with (trying) to run a repair on the sparse bundle. Opened things up, but when I tried to " . . . mount the sparse bundle by opening the TC in the Finder and double-clicking on the sparse bundle" things seemed to hang.
    I have a window indicating it is opening the sparse bundle (name seems correct), but it has been doing this for over half an hour without any visible progress. All I have is a process bar and "Checking Volumes..." (I do have cancel & skip as options.)
    I'm loath to cancel or skip as it is possible that taking this long is normal.
    Can anyone give me an idea how long to expect this to take and/or if it won't open properly, suggest a next step to try?
    Thanks in advance,

    Here's the logs (I confess, I forgot to check that when it wasn't in the visible window).
    2010-03-03 15:34:22 -0500: Disk Utility started.
    2010-03-03 15:34:31 -0500: Verify and Repair volume “Backup of Chris Huntington’s Computer”
    Starting repair tool: 2010-03-03 15:34:31 -0500
    2010-03-03 15:34:31 -0500: Checking Journaled HFS Plus volume.
    2010-03-03 15:34:31 -0500: Detected a case-sensitive catalog.
    2010-03-03 15:34:32 -0500: Checking Extents Overflow file.
    2010-03-03 15:34:32 -0500: Checking Catalog file.
    2010-03-03 15:52:44 -0500: Checking multi-linked files.
    2010-03-03 21:12:52 -0500: Checking Catalog hierarchy.
    2010-03-03 21:51:24 -0500: Checking Extended Attributes file.
    2010-03-03 21:53:06 -0500: Checking multi-linked directories.
    2010-03-03 23:22:27 -0500: Checking volume bitmap.
    2010-03-03 23:22:29 -0500: Checking volume information.
    2010-03-03 23:22:29 -0500: 2010-03-03 23:22:29 -0500: The volume Backup of Chris Huntington’s Computer appears to be OK.
    Repair tool completed: 2010-03-03 23:22:31 -0500
    2010-03-03 23:22:31 -0500:
    2010-03-03 23:22:31 -0500:
    2010-03-04 08:24:55 -0500: Attach Image “Chris Huntington’s Computer_001b63a90f4c.sparsebundle”
    2010-03-04 08:24:55 -0500: Initializing…
    2010-03-04 08:24:59 -0500: Operation canceled by user.
    2010-03-04 08:25:10 -0500: Attaching…
    2010-03-04 08:25:11 -0500: Checking volumes…
    2010-03-04 08:25:11 -0500: Volume check completed…
    2010-03-04 08:25:11 -0500: Attaching…
    2010-03-04 08:25:11 -0500: Finishing…
    2010-03-04 08:46:59 -0500: Verify and Repair volume “Backup of Chris Huntington’s Computer”
    Starting repair tool: 2010-03-04 08:46:59 -0500
    2010-03-04 08:46:59 -0500: Checking Journaled HFS Plus volume.
    2010-03-04 08:46:59 -0500: Detected a case-sensitive catalog.
    2010-03-04 08:46:59 -0500: Checking Extents Overflow file.
    2010-03-04 08:46:59 -0500: Checking Catalog file.
    2010-03-04 09:05:12 -0500: Checking multi-linked files.
    2010-03-04 11:35:50 -0500: Stopped by user
    Repair tool completed: 2010-03-04 11:35:56 -0500
    2010-03-04 11:35:56 -0500:
    2010-03-04 11:35:56 -0500:
    As you can see, I ended up aborting the second one after ~3 hours (99.9% of which was spent ~1/2 way done with 21 minutes as the estimated remaining time).
    Also, the first attempt took almost 8 hours(!) and didn't detect any errors.
    I see, re: reset. I'm pretty much in agreement that it's beginning to look like deleting the sparse bundle and just letting time machine take over (i.e. starting from scratch) is looking like the main option.
    I guess on one level, I'm back to the strangeness of my "problem." Everything, other than being really slow (including the disk utility check), seems to be working. On one level, I am paranoid that there is indeed a problem and worry that if I just ignore it, it will come back to bite me if I ever actually need to restore from the backup.
    Thanks again,

  • My iPhone is frozen. Troubleshooting doesn't work

    My shiny new iPhone that I waited in line for on SF on Friday is iFrozen.
    I have about 30 threaded text conversations, 30 contacts, 3 email accounts, 20 photo's, 600 songs, 2 TV shows and 1 movie.
    I understand photo's, songs, video and contacts will synch back to my phone if reset.
    The device is not an iPod, it's a Phone, which means I would HATE to lose my threaded text conversations and have to setup up my email accounts AGAIN (after 3 days of use).
    iPod hard reset? No big deal, less is lost (sometimes).
    Phone hard reset? Not good at all.
    On top of these issues, Safari has crashed on me at least 7 times and while I was playing music on the ipod app i decided to hop over to my text messages to send a message. Once I got in the text message app the ipod app crashed (i.e. the music in my car stopped playing).
    Crashes and now it's frozen.
    Restarting (doesn't work):
    Try restarting iPhone. To turn it off, press and hold the Sleep/Wake button until the red slider appears. Slide your finger across the slider to turn off iPhone. To turn iPhone on, press and hold the Sleep/Wake button until the Apple logo appears.
    Unfreeze (doesn't work):
    Does iPhone appear frozen or stuck? Try pressing and holding the Home button for 6 seconds to close a frozen application. Then try restarting iPhone again.
    Is the "reset" option in troubleshooting a hard reset?
    On my Windows Mobile phone I can pop out the battery and it will recover through the safe mode boot without having to hard reset the device.
    Is there another way to unfreeze this thing?
    Current iPhone state: Displaying Home screen, touch unresponsive, on/off switch unresponsive, home button unresponsive.
    Strangely iTunes still recognizes the phone when i connect it to my Mac and goes through the entire synch process fine.
    Why isn't there a soft reset in iTunes to send to the phone?
    Phone calls go straight to voicemail.
    Best,
    Rob
    (good thing I bought 2 8GB's on Friday in SF)

    No, get the screen fixed.

  • IPad 2 restore problem with strange text

    Hi,
           I got a brand new iPad 2 CDMA, after unpacking and turning on the device did not work and I get iTune logo. So I decided to restore it but failed. Get strange output text on the screen as shown down:
    switched to DFU mode but didnt work also at the end of all my tryes to restore I get errors like 1604, 1601 and so on.
    PS: i am using iOS 4.3.3
    Hope some can help me

    iPad: Unable to update or restore
    http://support.apple.com/kb/ht4097
    iTunes: Specific update-and-restore error messages and advanced troubleshooting
    http://support.apple.com/kb/TS3694
    If you can’t update or restore your iOS device
    http://support.apple.com/kb/ht1808
     Cheers, Tom

  • HT4436 When ever I try to log into I Cloud it rejects my Apple ID I have changed it several times but all to no avail. Strangely I can use my ID to buy Itunes music. Can any one help please?

    Can anyone help? I am unable to log into ICloud. When I type in my ID and password it comes back with 'incorrect password' I have changed the password several times but it doesn't help. strangely i can use my paswod to buy buy Itunes music but not for Icloud. Any suggestions would be gratefully recieved.

    Hello CarenzaRielle,
    I know not being able to access your Apple ID can be frustrating. I have located an article that will walk you through a series of troubleshooting steps to resolve this:
    Apple ID: If you forget your password
    http://support.apple.com/kb/ht5787
    Refer to the Apple ID Support page if you are unable to reset your password using the steps in this article. If you know your Apple ID password, you can also choose to change your Apple ID or change your password.
    Thank you for contributing to Apple Support Communities.
    Cheers,
    BobbyD

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