6 Replies Latest reply on Apr 29, 2002 3:55 PM by kamran

    Network Required?

    objectwizatlycos
    objectwizatlycos Mar 21, 2002 7:06 AM

      Hi all,

      I posted to jboss-user a while back regarding using clustering with no IP address on my machine. I was told to run JBoss on a machine with an IP.

      I set up an IP for my machine (a laptop) but had no network connection. Clustering service still hangs forever... :-(

      My laptop JBoss works when connected to the network but why not when I'm at home with a valid IP?

      Thanks,

      Peter.

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        • 1. Re: Network Required?
          toddoc
          toddoc Apr 2, 2002 9:51 AM (in response to objectwizatlycos)

          Just a guess but I suspect that your laptop is trying to do a DNS lookup on some host name. Since your laptop network does not have a DNS server it just hangs. You could try adding the host name to the lmhosts file.

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          • 2. Re: Network Required?
            user57
            user57 Apr 4, 2002 12:31 AM (in response to objectwizatlycos)

            I am not 100% sure, but you might need an interface that supports multicast for a system with clustering enabled to come up.

            --jason

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            • 3. Re: Network Required?
              ajitsingh
              ajitsingh Apr 11, 2002 6:49 AM (in response to objectwizatlycos)

              execute
              route add -net 224.0.0.0 netmask 240.0.0.0 dev eth0
              and it works

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              • 4. Re: Network Required?
                belaban
                belaban Apr 11, 2002 10:42 AM (in response to objectwizatlycos)

                I have successfully tried the following on my Linux box:

                route add -net 224.0.0.0 netmask 224.0.0.0 lo

                This adds a route for ALL multicast traffic to the loopback device. This way you don't need to be connected to any network. Also, you will not even need a NIC.

                Note that 224.0.0.0 denotes ALL mcast class D addresses, which is an undocumented feature of route (probably just on UNIX boxes).

                I wonder whether it will work on Windows machines. Can someone try it out and report the result here ?

                Bela

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                • 5. Re: Network Required?
                  aroraprince
                  aroraprince Apr 12, 2002 2:59 AM (in response to objectwizatlycos)

                  netmask for class D addresses is 240.0.0.0

                  route add -net 224.0.0.0 netmask 240.0.0.0 lo

                  Prince Arora

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                  • 6. Re: Network Required?
                    kamran
                    kamran Apr 29, 2002 3:55 PM (in response to objectwizatlycos)

                    I am using Windows box ,
                    Any body Let me know its windows equivalent command of
                    the following unix route cmds :

                    route add -net 224.0.0.0 netmask 240.0.0.0 dev eth0
                    route add -net 224.0.0.0 netmask 240.0.0.0 lo

                    rgds,
                    kamran

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