Sessionmanagement with NES and Network Addresstranslation

Hi guys,
          I have a strange problem. I use NES with NSAPI Bridge as proxy for a
          Weblogic cluster. This cluster consists of two machines with Solaris 2.7 and
          Weblogic Server 4.5.1 SP7. The cluster works and the sessions are replicated
          between the primary and the secondary server. There is a CookieName
          configured in the properties and in the bridge too. I use the bridge from
          the WLS 5.1 distribution (along with recommendations). Between the bridge
          and the cluster there is a gateway which translates the used ip addresses.
          Along with recommendations I have configured the property
          weblogic.system.DNSName with the ip addresses used within the bridge
          configuration.
          But if I issue a request to the SessionServlet of the distribution the
          bridge doesnt routes the request to the primary server, but the bridge make
          a round robin between the cluster members. If I shut down a member of the
          cluster, the session management works.
          Does anyone has an idea? Each help is welcome.
          Thanks Lutz Strobel
          

May be I did say it right. Let me try this again.
          Say there are two servers in the cluster, Servers A and B. If the proxy thinks
          that Server B is the primary, after NAT, if the request doesn't go to Server B,
          then you are breaking the replication mechanism.
          Hope this helps.
          - Prasad
          Bob Kiep wrote:
          > Are you sure you cannot do NAT between the bridge and the cluster? I would
          > imagine that many many sites perform address translation between their DMZ
          > where the bridge is located, and the "inside" where the cluster is.
          >
          > If NAT is a no-no, then firms will be revealing to hackers a lot about their
          > internal addressing schemes by putting the "inside" IP addresses in config.
          > files on the web server
          > .
          >
          > "Prasad Peddada" <[email protected]> wrote in message
          > news:[email protected]...
          > > You shouldn't be doing any address translation between the bridge and the
          > WLS.
          > > Essentially you are breaking the whole mechanism on which the replication
          > works.
          > > Any way what kind of address translation are you talking about here?
          > >
          > > - Prasad
          > >
          > >
          > > Lutz Strobel wrote:
          > >
          > > > Hi guys,
          > > >
          > > > I have a strange problem. I use NES with NSAPI Bridge as proxy for a
          > > > Weblogic cluster. This cluster consists of two machines with Solaris 2.7
          > and
          > > > Weblogic Server 4.5.1 SP7. The cluster works and the sessions are
          > replicated
          > > > between the primary and the secondary server. There is a CookieName
          > > > configured in the properties and in the bridge too. I use the bridge
          > from
          > > > the WLS 5.1 distribution (along with recommendations). Between the
          > bridge
          > > > and the cluster there is a gateway which translates the used ip
          > addresses.
          > > > Along with recommendations I have configured the property
          > > > weblogic.system.DNSName with the ip addresses used within the bridge
          > > > configuration.
          > > > But if I issue a request to the SessionServlet of the distribution the
          > > > bridge doesnt routes the request to the primary server, but the bridge
          > make
          > > > a round robin between the cluster members. If I shut down a member of
          > the
          > > > cluster, the session management works.
          > > > Does anyone has an idea? Each help is welcome.
          > > > Thanks Lutz Strobel
          > >
          

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