Clustering Without IP Multicasting Support

Is it possible to Cluster WebLogic Server 5.1 with out using IP Multicast? The current network does not support IP Multicasting, is there a way to cluster WebLogic without using IP Multicast?ThanksSean

          You may turn on multicast protocol on switch or router for certain ports if there
          has security concern.
          Brian
          Prasad Peddada <[email protected]> wrote:
          >No we won't work without multicast.
          >
          >-- Prasad
          >
          >Sean Baseman wrote:
          >
          >> The systems are UNIX systems, the boxes themselves are not having any
          >problems
          >> with the multicast. The client's security group has disabled Multicast
          >support
          >> above us, and seem to have a problem with it, why I have no idea.
          >Just looking
          >> for ways to get around this.
          >>
          >> Thanks
          >>
          >> Sean
          >>
          >> "Brian Lin" <[email protected]> wrote:
          >> >
          >> >Sean,
          >> >
          >> >WL uses multicasting ip address to communicate clustered nodes. Most
          >> >network equipment
          >> >supports multicasting, could you verify your network interface? (In
          >UNIX,
          >> >use
          >> >ifconfig lanx to see multicast is enabled)
          >> >
          >> >Brian
          >> >Sean Baseman <[email protected]> wrote:
          >> >>Is it possible to Cluster WebLogic Server 5.1 with out using IP Multicast?
          >> >> The current network does not support IP Multicasting, is there a
          >way
          >> >>to cluster WebLogic without using IP Multicast?ThanksSean
          >> >
          >

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Hope I am not hijacking your excellent post.
Some details to add for findings on AWS EC2 environment.
From CMD prompt CF11 instance that is clusted starting:
Aug 26, 2014 11:23:44 PM org.apache.catalina.ha.session.DeltaManager startIntern
al
INFO: Register manager / to cluster element Host with name localhost
Aug 26, 2014 11:23:44 PM org.apache.catalina.ha.session.DeltaManager startIntern
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ership.StaticMember[tcp://172.31.21.168:4001,172.31.21.168,4001, alive=0, secure
Port=-1, UDP Port=-1, id={1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 }, payload={}, c
ommand={}, domain={100 101 108 116 97 45 115 116 97 ...(12)}, ]. This operation
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Aug 26, 2014 11:23:45 PM org.apache.catalina.ha.session.DeltaManager waitForSend
AllSessions
INFO: Manager [/]; session state send at 8/26/14 11:23 PM received in 125 ms.
Aug 26, 2014 11:23:45 PM org.apache.catalina.ha.session.JvmRouteBinderValve star
tInternal
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peared
INFO: Received member disappeared:org.apache.catalina.tribes.membership.StaticMe
mber[tcp://172.31.25.175:4002,172.31.25.175,4002, alive=0, securePort=-1, UDP Po
rt=-1, id={0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 }, payload={}, command={}, doma
in={100 101 108 116 97 45 115 116 97 ...(12)}, ]
Aug 26, 2014 11:23:06 PM org.apache.catalina.ha.tcp.SimpleTcpCluster memberAdded
INFO: Replication member added:org.apache.catalina.tribes.membership.StaticMembe
r[tcp://172.31.25.175:4002,172.31.25.175,4002, alive=0, securePort=-1, UDP Port=
-1, id={0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 }, payload={}, command={}, domain=
{100 101 108 116 97 45 115 116 97 ...(12)}, ]
Aug 26, 2014 11:23:06 PM org.apache.catalina.tribes.group.interceptors.TcpFailur
eDetector performBasicCheck
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ticMember[tcp://172.31.25.175:4002,172.31.25.175,4002, alive=0, securePort=-1, U
DP Port=-1, id={0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 }, payload={}, command={},
domain={100 101 108 116 97 45 115 116 97 ...(12)}, ]]
Running CF11 via services.msc (as you normally would) these similar details are recorded in ColdFusion11\clustered_instance\logs\coldfusion-error.log. The latter part of log showing when other clustered instance has been stopped and started.
Aug 26, 2014 11:40:31 PM org.apache.catalina.ha.session.DeltaManager startInternal
INFO: Register manager / to cluster element Host with name localhost
Aug 26, 2014 11:40:31 PM org.apache.catalina.ha.session.DeltaManager startInternal
INFO: Starting clustering manager at /
Aug 26, 2014 11:40:31 PM org.apache.catalina.ha.session.DeltaManager getAllClusterSessions
INFO: Manager [/], requesting session state from org.apache.catalina.tribes.membership.StaticMember[tcp://172.31.21.168:4001,172.31.21.168 ,4001, alive=0, securePort=-1, UDP Port=-1, id={1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 }, payload={}, command={}, domain={100 101 108 116 97 45 115 116 97 ...(12)}, ]. This operation will timeout if no session state has been received within 60 seconds.
Aug 26, 2014 11:40:31 PM org.apache.catalina.ha.session.DeltaManager waitForSendAllSessions
INFO: Manager [/]; session state send at 8/26/14 11:40 PM received in 141 ms.
Aug 26, 2014 11:40:31 PM org.apache.catalina.ha.session.JvmRouteBinderValve startInternal
INFO: JvmRouteBinderValve started
Aug 26, 2014 11:40:31 PM org.apache.coyote.AbstractProtocol start
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Aug 26, 2014 11:40:31 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-8012"]
Aug 26, 2014 11:40:31 PM com.adobe.coldfusion.launcher.Launcher run
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Aug 26, 2014 11:42:04 PM org.apache.catalina.ha.tcp.SimpleTcpCluster memberDisappeared
INFO: Received member disappeared:org.apache.catalina.tribes.membership.StaticMember[tcp://172.31.21.168:4001,1 72.31.21.168,4001, alive=0, securePort=-1, UDP Port=-1, id={1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 }, payload={}, command={}, domain={100 101 108 116 97 45 115 116 97 ...(12)}, ]
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Aug 26, 2014 11:42:23 PM org.apache.catalina.tribes.group.interceptors.TcpFailureDetector performBasicCheck
INFO: Suspect member, confirmed alive.[org.apache.catalina.tribes.membership.StaticMember[tcp://172.31.21.168:4001,172.31 .21.168,4001, alive=0, securePort=-1, UDP Port=-1, id={1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 }, payload={}, command={}, domain={100 101 108 116 97 45 115 116 97 ...(12)}, ]]
Hope that adds to the usefulness of this thread.
Regards, Carl.

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>
What I have to work with:
+ WebLogic Server 5.1 cluster
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What I want to do:
+ Be able to know list of available servers in the cluster
and use this list to broadcast same information to all EJBs
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+ Othwerwise, I would then need to implement my own server
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Why I want to do the above:
+ I would like to implement a EJB sendAll() method that will
send the same request to all EJBs of the same JNDI name in the cluster.
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Plus, I believe that RMI does not support multicasting.--
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Hi Leo,
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Clustering Without IP Multicasting Support

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