CSM SLB for SAP portal 5.0

Dear All!
Is there somebody who have experineces with SLB for SAP portal? The main question is : Which sticknies to use: SSL or IP based? How to configure IP based, because I did not find good explanation of "netmask" parameter in sticky,sticky-group command. What happen to sticky connection, when real server fail. Is it rebalanced?
Thanx!
Gabriel

Hi Gabriel,
I do not have experiences with SAP-Portal Loadbalancing but from my experience with loadbalancing I would say that this decision should be done regarding the surrounding environment. If there are proxies around which are used to connected to the loadbalanced VIP I would suggest SSL-Session balancing/stickieness. If clients are directly connecting towards the VIP a client-IP-stickieness might be easiser to troubleshoot.
Regarding the netmask issue:
Unfortunately there is no real documentation (I did not find any so far). I can only tell you the result out of my experience:
A netmask 255.255.255.255 is kind of host stickiness and 255.255.255.0 a stickieness of a /24 network. In other words I think that all Clients with a network of 10.1.1.0/24 are sticked to the decission once taken for one of the hosts in this segment while the sticky timeout did not take place. Maybe one can confirm or correct this.
Regarding the thing with the failure of a real server:
With the corresponding failaction defined in the serverfarm you decide what to do in case of an error of a real server. The stickiness should be corrected correspondig to the results you define with the failaction command.
This is how I dealt with those sticky issue when doing firewall loadbalancing with client-IP-Stickiness.
Hope that helped.
Kind Regards,
Joerg

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Info: Begin of log messages of the target system:
10/10/21 19:52:31 - ***********************************************************
10/10/21 19:52:32 - Start updating EAR file...
10/10/21 19:52:32 - start-up mode is lazy
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                          com.sap.engine.services.deploy.exceptions.ServerDeploymentException: Exception during generation of components of application sap.com/com.sapportals.dqe.beans in container EJBContainer.
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                          at com.sap.engine.services.deploy.server.DeployServiceImpl.deploy(DeployServiceImpl.java:462)
                          ... 10 more
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                          at java.lang.Class.getDeclaredConstructors0(Native Method)
                          at java.lang.Class.privateGetDeclaredConstructors(Class.java:1618)
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                          at com.sap.engine.services.ejb.deploy.verifier.Verifier.check(Verifier.java:46)
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                          at com.sap.engine.services.ejb.EJBAdmin.deploy(EJBAdmin.java:2057)
                          at com.sap.engine.services.deploy.server.application.DeploymentTransaction.makeComponents(DeploymentTransaction.java:594)
                          ... 16 more
                     For detailed information see the log file of the Deploy Service.
10/10/21 19:52:32 - ***********************************************************
Info: End of log messages of the target system.
Info: ***** End of SAP J2EE Engine Deployment (J2EE Application) *****
Error: Aborted: development component 'com.sapportals.dqe.beans'/'sap.com'/'SAP AG'/'609.20041012204607.0000':
Caught exception during application deployment from SAP J2EE Engine's deploy service:
java.rmi.RemoteException: Cannot deploy application sap.com/com.sapportals.dqe.beans..
Reason: Exception during generation of components of application sap.com/com.sapportals.dqe.beans in container EJBContainer.; nested exception is:
     com.sap.engine.services.deploy.exceptions.ServerDeploymentException: Exception during generation of components of application sap.com/com.sapportals.dqe.beans in container EJBContainer.
(message ID: com.sap.sdm.serverext.servertype.inqmy.extern.EngineApplOnlineDeployerImpl.performAction(DeploymentActionTypes).REMEXC)
Info: SDM configuration: Do not automatically start/stop J2EE Engine. Do not restore state of J2EE Engine now.
Error: -
At least one of the Deployments failed -
Info: Summarizing the deployment results:
Error: Aborted: G:\SoftWare\netweaver\Identified\SAPNETWEAVER041DVD_ADDON\EP-KMC\DQE\SDA\J2EE\com.sapportals.dqe.beans.ear
Processing error. Return code: 4
Error: Processing error. Return code: 4
ERROR 2010-10-21 19:52:33
MUT-02041 SDM call of deploySdaList ends with returncode 4. See output of logfile C:\Program Files\sapinst_instdir\NW04SR1\EP\EP\callSdmViaSapinst.log.

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Edited by: Ravi Joseph on Dec 12, 2008 11:51 AM

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