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.
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
- 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:
- In the administrative console, click System administration
> Node agents
- Select the desired node.
- Under Additional properties , click Ports to bring
up the list of ports that node agent process uses.
- Click DCS_UNICAST_ADDRESS.
- 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.
- 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.
- In the administrative console, click Servers > Core groups
> Core group settings
- Select the core group.
- 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.
- In the Multicast group IP end field, specify the last IP address
in the range associated with that NIC .
- 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.