Weblog 6 Clustering basic question

I am trying to setup Weblogic ver 6.0 Clustering on my Windows NT machine.
          From the weblogic console i created a Cluster, which has the IP address of
          my machine, and given it some name MyCluster.
          I have not given any Multicast IP address to it.
          On the left hand pane : For my servers under Servers/exampleServer
          On the right hand pane :
          I go to Configuration/Cluster window and choose MyCluster for the cluster
          field for my Server exampleServer.
          And click Apply.
          This results in error messages in my Weblogic command line window with lots
          of NullPointerExceptions etc...
          Have i missed any step here ?
          Can any one please give me a step by step guide to creating a Cluster, and
          then adding server (instances ?) to it.
          Do i need more than one IP address (i guess...) ?
          

          A cluster needs at least TWO IPs (2 IPs in 1 PC or 2 PCs).
          Your IP for cluster should be like 1.1.1.1,1.1.1.2 or cluster.domain
          with two IPs assigned to it.
          That should be why you got NullPoint for the missing 2nd IP.
          You might follow my attached ReadMe.doc and modify my sample config.xml
          for both machines/locations (use same config.xml on the two), modify
          my startExamplesCluster.cmd (for master), startExamplesSlave.cmd
          (for slave) and setExamplesEnv.cmd (for both) to fit yours, and
          try.
          config.xml has all the result you can make in console.
          Cluster feature in WL6 is far from perfect, don't guess the ideal
          possibilities all the time.
          Good luck!
          Steven
          "JSB" <[email protected]> wrote:
          >I am trying to setup Weblogic ver 6.0 Clustering on my
          >Windows NT machine.
          >
          >From the weblogic console i created a Cluster, which has
          >the IP address of
          >my machine, and given it some name MyCluster.
          >I have not given any Multicast IP address to it.
          >
          >On the left hand pane : For my servers under Servers/exampleServer
          >On the right hand pane :
          >I go to Configuration/Cluster window and choose MyCluster
          >for the cluster
          >field for my Server exampleServer.
          >And click Apply.
          >
          >This results in error messages in my Weblogic command
          >line window with lots
          >of NullPointerExceptions etc...
          >
          >Have i missed any step here ?
          >Can any one please give me a step by step guide to creating
          >a Cluster, and
          >then adding server (instances ?) to it.
          >Do i need more than one IP address (i guess...) ?
          >
          >
          >
          [startExamplesSlave.cmd]
          

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