Using the Cisco Local Director

Hello All-
We are attempting to set up a server farm that is load balanced with the Cisco Local Director and are experiencing difficulties with some clients whose networks have multiple proxy servers. We have used both the generic sticky command as well as the cookie-insert sticky without total success. Our next option looks like we should put our own proxy server in front of the LD and use SSL. Has anyone experienced these problems and come up with a solution. Unfortunately we don't have weblogic clustering licenses so our state is lost whe a client gets redirected to a new server. Thanks for your time!
-Adam
[email protected]
415.887.9106

In directed mode, the client browsers are configured to point to a proxy to a virtual IP address on the Local Director. I know the Local Director does not support a real server that does not have a virtual address defined so it can't transparently forward like the CSS.

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Hi!, I have a question: Is there any way using CISCO Local Director instead of WebLogic Clustering feature ? because that our production folks insist on using "hardware" solution. We us iPlanet Web server + WebLogic Application Server in our application. Very appreciate if anyone can answer my question.


Not yet. First, I do not believe that there is a hardware load balancer
          that "understands" WL stickiness, especially WRT failover. Only WL's
          plug-ins understand that, so right now you must use them.
          I expect that WL will eventually be able to route a request to the "right"
          server if it shows up at the "wrong" server, meaning that eventually each WL
          instance in a cluster could be used as the front-end of the cluster, so a
          hardware solution could work very well for non-session requests (where it
          doesn't matter which WL instance gets the requests) and for session requests
          (where it must go to the "right" server) it will re-route automatically.
          Right now I suggest using NAS to front the cluster; it appears to be the
          best solution. If you use a hardware load balancer, then a group of Apache
          servers on Linux would be as good or better of a solution to front the
          cluster (i.e. load balancer distributes to a set of Apache servers that are
          working independently of each other).
          Cameron Purdy
          [email protected]
          http://www.tangosol.com
          WebLogic Consulting Available
          "Bernie Wong" <[email protected]> wrote in message
          news:[email protected]...
          > Cameron,
          >
          > Can I use a hardware load balancer that respects stickiness and therefore
          > not use WL-based HTTP balancing.
          >
          > "Cameron Purdy" <[email protected]> wrote in message
          > news:[email protected]...
          > > From what I have heard, you can use CISCO local director to spread out
          > > incoming HTTP requests across a number of Apache or IIS or NAS servers,
          > each
          > > of which has the WL cluster feature. That really only makes sense
          though
          > if
          > > you have too large an amount of web server requests (typically static
          > files
          > > like HTML, GIF, etc.). There is no way currently to remove the WL
          cluster
          > > feature that plugs into the web server. If the request goes to the
          wrong
          > WL
          > > server, it won't get re-routed to the right WL server. There IS such a
          > > thing as a "wrong" server because HTTP sessions are sticky. Following
          the
          > > must-use-hardware line of thought, though, you could theoretically have
          10
          > > identically configured boxes running Apache with the WL mod and also
          have
          > WL
          > > on each box, then local director could hardware distribute to the 10
          boxes
          > > that would then software distribute to the same 10 boxes. In other
          words,
          > > each host in a 10-host WL cluster is also running Apache with the WL mod
          > (or
          > > one of the others).
          > >
          > > --
          > >
          > > Cameron Purdy
          > > [email protected]
          > > http://www.tangosol.com
          > > WebLogic Consulting Available
          > >
          > >
          > > "Think Lee" <[email protected]> wrote in message
          > > news:[email protected]...
          > > Hi!, I have a question: Is there any way using CISCO Local Director
          > instead
          > > of WebLogic Clustering feature ? because that our production folks
          insist
          > on
          > > using "hardware" solution. We us iPlanet Web server + WebLogic
          > Application
          > > Server in our application. Very appreciate if anyone can answer my
          > question.
          > >
          > >
          >
          >

Using the Cisco Local Director

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