Deploying Cisco Overlay Transport Virtualization (OTV) in Data Center Networks

Welcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to learn and ask questions about how to plan, design, and implement Cisco Overlay Transport Virtualization (OTV) in your Data Center Network with Cisco experts Anees Mohamed Abdulla and Pranav Doshi.
Anees Mohamed Abdulla is a network consulting engineer for Cisco Advanced Services, where he has been delivering plan, design, and implementation services for enterprise-class data center networks with leading technologies such as vPC, FabricPath, and OTV. He has 10 years of experience in the enterprise data center networking area and has carried various roles within Cisco such as LAN switching content engineer and LAN switching TAC engineer. He holds a bachelor's degree in electronics and communications and has a CCIE certification 18764 in routing and switching. 
Pranav Doshi is a network consulting engineer for Cisco Advanced Services, where he has been delivering plan, design, and implementation services for enterprise-class data center networks with leading technologies such as vPC, FabricPath, and OTV. Pranav has experience in the enterprise data center networking area and has carried various roles within Cisco such as LAN switching TAC engineer and now network consulting engineer. He holds a bachelor's degree in electronics and communications and a master's degree in electrical engineering from the University of Southern California.
Remember to use the rating system to let Anees and Pranav know if you have received an adequate response.  
Because of the volume expected during this event, Anees and Pranav might not be able to answer each question. Remember that you can continue the conversation on the Data Center, sub-community forum shortly after the event. This event lasts through August 23, 2013. Visit this forum often to view responses to your questions and the questions of other Cisco Support Community members.

Hi Dennis,
    All those Layer 2 extension technologies require STP to be extended between Data Centers if you need to have multiple paths between Data Centers. OTV does not extend STP rather it has its own mechanism (AED election) to avoid loop when multiple paths are enabled. It means any STP control plane issue, we don't carry to the other Data Center.
    OTV natively suppresses Unknown Unicast Flooding across the OTV overlay. Unknown unicast flooding is a painful problem in layer 2 network and difficult to troubleshoot to identify the root cause if you don't have proper network monitoring tool.
   It has ARP optimization which eliminates flooding ARP packets across Data Center by responding locally with cached ARP messages. One of the common issues I have seen in Data Center is some server or device in the network sends continuous ARP packets which hits Control plane in the Aggregation layer which in turn causes network connectivity issue.
The above three points proves the Layer 2 domain isolation between data centers. If you have redundant Data Centers with Layer 2 extended without OTV, the above explained layer 2 issue which happens in one Data Center carries the same failure to the second data center which creates the question of what is the point of having two different Data Centers if we can not isolate the failure domain.
  OTV natively supports HSRP localization with few command lines. This is a very important requirement in building Active/Active Data Center.
Even though your question is related to L2TP, OTV deserves the comparison with VPLS and those comparison will also be applicable for L2TP. The below link explains in detail...
http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9402/white_paper_c11-574984.html
Thanks,
Anees.

Similar Messages

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    Hi Sarah,
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  • Why data center begin to build large layer 2 domain?

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    Duplicate post #2. 

  • WAN Router Connection to Data Center

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    The vPC between N5K and N7K is the catch here. Layer-3 routing over vPC member ports is currently not supported so I will advise you to stay away from this approach.
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  • Deployment Error when transporting to TEST server

    Hi experts,
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    =============================================
    Check causing exception for details (trace file). Hint: Are all referenced components deployed and available on the engine ?
    =============================================
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    td/ddic/metamodel/content (default)
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    tc/wdp/metamodel/content (default)
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    Thanks in advance.
    Rgds,
    Daniel

    A dump of the exception i m getting.
    Anyone has a clue or advice of how to overcome this problem ?
    20081107165952 Info   :Nov 7, 2008 4:46:03 PM   Info: Starting: Update: Selected development component 'appl/main'/'com.diagonal'/'dev_devcias_C'/'823'/'0' updates currently deployed development component 'appl/main'/'com.diagonal'/'LOKAL'/'0.2006.01.12.14.18.23'/'0'.
    20081107165952 Info   :Nov 7, 2008 4:46:03 PM   Info: SDA to be deployed: /usr/sap/WS5/JC00/SDM/root/origin/com.diagonal/appl/main/dev_devcias_C/0/823/appl~main.sda
    20081107165952 Info   :Nov 7, 2008 4:46:03 PM   Info: Software type of SDA: J2EE
    20081107165952 Info   :Nov 7, 2008 4:46:03 PM   Info: ***** Begin of SAP J2EE Engine Deployment (J2EE Application) *****
    20081107165952 Info   :Nov 7, 2008 4:46:07 PM   Info: Begin of log messages of the target system:
    20081107165952 Info   :08/11/07 16:46:03 -  ***********************************************************
    20081107165952 Info   :08/11/07 16:46:04 -  Start updating EAR file...
    20081107165952 Info   :08/11/07 16:46:04 -  start-up mode is lazy
    20081107165952 Info   :08/11/07 16:46:04 -  EAR file updated successfully for 70ms.
    20081107165952 Info   :08/11/07 16:46:04 -  Start updating...
    20081107165952 Info   :08/11/07 16:46:06 -  EAR file uploaded to server for 861ms.
    20081107165952 Info   :08/11/07 16:46:07 -  ERROR: Not updated. Deploy Service returned ERROR:
    20081107165952 Info   :                     java.rmi.RemoteException: Cannot deploy application com.diagonal/appl~main..
    20081107165952 Info   :                     Reason: Clusterwide exception: Failed to deploy application com.diagonal/appl~main. Check causing exception for details (trace file). Hint: Are all referenced components deployed and available on the engine?; nested exception is:
    20081107165952 Info   :                          com.sap.engine.services.deploy.container.DeploymentException: Clusterwide exception: Failed to deploy application com.diagonal/appl~main. Check causing exception for details (trace file). Hint: Are all referenced components deployed and available on the engine?
    20081107165952 Info   :                          at com.sap.engine.services.deploy.server.DeployServiceImpl.update(DeployServiceImpl.java:681)
    20081107165952 Info   :                          at com.sap.engine.services.deploy.server.DeployServiceImplp4_Skel.dispatch(DeployServiceImplp4_Skel.java:1278)
    20081107165952 Info   :                          at com.sap.engine.services.rmi_p4.DispatchImpl._runInternal(DispatchImpl.java:313)
    20081107165952 Info   :                          at com.sap.engine.services.rmi_p4.DispatchImpl._run(DispatchImpl.java:199)
    20081107165952 Info   :                          at com.sap.engine.services.rmi_p4.server.P4SessionProcessor.request(P4SessionProcessor.java:136)
    20081107165952 Info   :                          at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
    20081107165952 Info   :                          at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
    20081107165952 Info   :                          at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
    20081107165952 Info   :                          at java.security.AccessController.doPrivileged(AccessController.java:215)
    20081107165952 Info   :                          at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:100)
    20081107165952 Info   :                          at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170)
    20081107165952 Info   :                     Caused by: com.sap.engine.services.deploy.container.DeploymentException: Clusterwide exception: Failed to deploy application com.diagonal/appl~main. Check causing exception for details (trace file). Hint: Are all referenced components deployed and available on the engine?
    20081107165952 Info   :                          at com.sap.engine.services.webdynpro.WebDynproContainer.deploy(WebDynproContainer.java:1050)
    20081107165952 Info   :                          at com.sap.engine.services.webdynpro.WebDynproContainer.makeUpdate(WebDynproContainer.java:1281)
    20081107165952 Info   :                          at com.sap.engine.services.deploy.server.application.UpdateTransaction.makeComponents(UpdateTransaction.java:400)
    20081107165952 Info   :                          at com.sap.engine.services.deploy.server.application.DeployUtilTransaction.commonBegin(DeployUtilTransaction.java:321)
    20081107165952 Info   :                          at com.sap.engine.services.deploy.server.application.UpdateTransaction.begin(UpdateTransaction.java:164)
    20081107165952 Info   :                          at com.sap.engine.services.deploy.server.application.ApplicationTransaction.makeAllPhasesOnOneServer(ApplicationTransaction.java:292)
    20081107165952 Info   :                          at com.sap.engine.services.deploy.server.application.ApplicationTransaction.makeAllPhases(ApplicationTransaction.java:326)
    20081107165952 Info   :                          at com.sap.engine.services.deploy.server.DeployServiceImpl.makeGlobalTransaction(DeployServiceImpl.java:3184)
    20081107165952 Info   :                          at com.sap.engine.services.deploy.server.DeployServiceImpl.update(DeployServiceImpl.java:669)
    20081107165952 Info   :                          ... 10 more
    20081107165952 Info   :                     For detailed information see the log file of the Deploy Service.
    20081107165952 Info   :08/11/07 16:46:07 -  ***********************************************************
    20081107165952 Info   :Nov 7, 2008 4:46:07 PM   Info: End of log messages of the target system.
    20081107165952 Info   :Nov 7, 2008 4:46:07 PM   Info: ***** End of SAP J2EE Engine Deployment (J2EE Application) *****
    20081107165952 Info   :Nov 7, 2008 4:46:07 PM   Error: Aborted: development component 'appl/main'/'com.diagonal'/'dev_devcias_C'/'823'/'0', grouped by :
    20081107165952 Info   :Caught exception during application deployment from SAP J2EE Engine's deploy service:
    20081107165952 Info   :java.rmi.RemoteException: Cannot deploy application com.diagonal/appl~main..
    20081107165952 Info   :Reason: Clusterwide exception: Failed to deploy application com.diagonal/appl~main. Check causing exception for details (trace file). Hint: Are all referenced components deployed and available on the engine?; nested exception is:
    20081107165952 Info   :     com.sap.engine.services.deploy.container.DeploymentException: Clusterwide exception: Failed to deploy application com.diagonal/appl~main. Check causing exception for details (trace file). Hint: Are all referenced components deployed and available on the engine?
    20081107165952 Info   : (message ID: com.sap.sdm.serverext.servertype.inqmy.extern.EngineApplOnlineDeployerImpl.performAction(DeploymentActionTypes).REMEXC)
    20081107165952 Info   :Nov 7, 2008 4:46:07 PM   Info: Starting to save the repository
    20081107165952 Info   :Nov 7, 2008 4:46:07 PM   Info: Finished saving the repository
    20081107165952 Info   :Nov 7, 2008 4:46:07 PM   Info: Starting: Update: Selected software component 'CIAS_WD_APPLICATIONS'/'diagonal.com'/'dev_devcias_C'/'1000.1.0.6.0.20081107075633''/'0' updates currently deployed software component 'CIAS_WD_APPLICATIONS'/'diagonal.com'/'dev_devcias_C'/'1000.1.0.0.0.20061122075934''/'1'.
    20081107165952 Info   :Nov 7, 2008 4:46:07 PM   Error: Aborted: software component 'CIAS_WD_APPLICATIONS'/'diagonal.com'/'dev_devcias_C'/'1000.1.0.6.0.20081107075633''/'0':
    20081107165952 Info   :Failed deployment of SDAs:
    20081107165952 Info   :development component 'appl/main'/'com.diagonal'/'dev_devcias_C'/'823'/'0' : aborted
    20081107165952 Info   :Please, look at error logs above for more information!
    20081107165952 Info   :Nov 7, 2008 4:46:07 PM   Info: Starting to save the repository
    20081107165952 Info   :Nov 7, 2008 4:46:08 PM   Info: Finished saving the repository
    20081107165952 Info   :Nov 7, 2008 4:46:08 PM   Info: J2EE Engine is in same state (online/offline) as it has been before this deployment process.
    20081107165952 Info   :Nov 7, 2008 4:46:08 PM   Error: -
    At least one of the Deployments failed -
    20081107165952 Info   :end of log
    20081107165952 Info   :RC of deployment: 12
    20081107165952 Info   :Step SDM-deploy ended with result 'fatal error' ,stopping execution at 2008-11-07 16:59:52.0155 +9:00

  • Transport of application table & data

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    Hi....
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  • How to deploy Cisco ISE agents through SCCM 2012 R2

    Hi,
    We are deploying Cisco ISE in our setup. we need to deploy following 3 .msi & 1 .xml files to 3000 PCs through System Center 2012 R2 Configuration Manager.
    The configuration.xml file must be deployed in specified (%ProgramData%\Cisco\Cisco AnyConnect Secure Mobility Client\NetworkAccessManager\newConfigFiles) location.
    anyconnect-nam-win-4.0.02052-k9.msi
    anyconnect-win-4.0.02052-pre-deploy-k9.msi
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    The above 3 .msi files should be installed silently and configuration.xml file to be copied to said location.
    I want to create  one package to deploy 3.msi files at once and another package for .xml file.
    or
    Is there anyway to create in one package to install the .msi files first and copy the .xml file as well.
    Any idea please.
    Regards,Ali

    Hi,
    Have you tried to create a script.
    You can easily test this by running your script manually with psexec -s
    to emulate running as SYSTEM account. 
    Reference:
    Robocopy
    https://technet.microsoft.com/en-us/library/cc733145.aspx
    Windows Installer : MSIEXEC Silent Install End to END
    http://sccm2o12.blogspot.com/2010/04/windows-installer-msiexec-silent.html
    Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact [email protected]

  • Data Center Hall Temperature for Cisco Nexus 7010

    Hi,
    I Have a Nexus 7010 that sometimes raise an alarm about temperature thresholds that are being exceeded.... I was wondering if Cisco has a recommendation (or best practice) about the correct temperature that the Nexus need in the cold and hot hall of the data room. I know that the operative temperature of nexus is 0 - 40°C but i´m not sure if my halls are in the best temperature.

    Hi Salvador,
    As long as you keep your Data Center environment in this operative range your N7K will be fine.
    The usual is around 18°C and 24°C.
    Richard

  • Asking for transport request whie table data updation

    Hi All,
    I am trying to update a table TCJ04 using transaction OPS6. When ever I am adding a new entry or edit the existing entry and click SAVE, the table is asking for Transport request number.
    This table carries a master data and should not be asking for transport request. Rather its access has to be controlled by user authorisation.
    Please tell me as to what is the reason of asking for transport request.
    regards,
    Gaurav.

    Hi Gourav,
    If you go table maintanance generater of the table TCJ04 in SE11, you will find that Standard recording routine radio button is selected. That is the reason you are asked to provide transport request while updating data.

  • Can we deploy a instance to AWS China data center?

    Can we deploy a instance to AWS China data center？  So far looks like AWS china data center is not in drop down list box.

    Hi Charles,
    Please select Windows Azure operated by 21Vianet.
    Best regards,
    Stanimir

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