Setting IP addresses for high availability manager communications in V6.0.0 or V6.0.1

Situations exist where you must select a preferred IP address, or a range of IP addresses that you want the high availability manager to use for communication within a core group.

Before you begin

If you are running WebSphere Application Server V6.0.2 or higher, see Setting up IP addresses for high availability manager communications.

About this task

If the core group is configured to use a point-to-point protocol for its communications, for example, channel framework or unicast, you should only set a preferred IP address if you want to restrict high availability manager communications to a specific IP address.

If the core group is configured to use a multicast transport for its communications, you must set a preferred IP address and specify a range of multicast group IP addresses.

Procedure

  1. If the core group transport is configured as either channel framework (the default) or unicast, specify the preferred IP address for the DCS_UNICAST_ADRESS port. To specify the preferred IP address for the DCS_UNICAST_ADRESS port., go to the configuration for each process that is running on the node in question, and change the Host field associated with the DCS_UNICAST_ADRESS port. For a given physical machine this action probably involves the node agent process as well as the application server processes. If the machine is running the deployment manager process that also needs to be updated. Basically all processes running on the physical machine need to be told which IP address to use for communication.

    To specify a preferred IP address for a node agent process:

    1. In the administrative console, click System administration > Node agents
    2. Select the desired node.
    3. Under Additional properties , click Ports to bring up the list of ports that node agent process uses.
    4. Click DCS_UNICAST_ADDRESS.
    5. Enter the preferred IP address in the Host field and then click Apply to save your changes.
    Repeat these steps for the application server processes and the deployment manager process, if one is running on this machine:
    • For the application server processes, in the administrative console, click Servers > Application Servers > server_name to bring up the configuration page for the desired server process.
    • For a deployment manager process, in the administrative console, click System administration > Deployment manager.
  2. If the core group transport is configured as multicast, use core group properties to specify the range of multicast IP addresses the high availability manager can use. If the core group transport is configured as multicast, you must associate a range of IP address for high availability manager communications, and you must use core group properties to specify this range of IP addresses. Do not specify them on a per process basis.
    1. In the administrative console, click Servers > Core groups > Core group settings
    2. Select the core group.
    3. In the Multicast group IP start field, specify the first IP address in the range of IP addresses that the high availability manager can use.
    4. In the Multicast group IP end field, specify the last IP address in the range associated with that NIC .
    5. Click Apply to save your changes.

Results

The high availability manager uses the specified IP address or range of IP addresses for communications within the core group.



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Last updated: Aug 29, 2010 8:25:23 PM CDT
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