There are two major categories or groups of high availability
manager protocols. Both of these protocol groups can be independently
configured to use newer versions of the protocols.
Before you begin
Before you change the version of a core group protocol
for a particular core group member, make sure that:
- You are familiar with the content of the Core group protocol
versions topic. This topic contains information that is helpful
in identifying:
- Which protocol category you want to configure.
- The custom property that you must use to configure this protocol
category.
- You use the tables that are included in the Core group protocol
versions topic to determine in which releases or service packs
each protocol version was added to the product.
- You verify that each member of the core group is running at a
product code level (VRM) that supports the new protocol version. The
code level must be equal to or greater than the code level in which
this protocol version was added to the product. All core group members
with which the new protocol version is associated must support that
protocol version.
About this task
The high availability manager can use any supported core
group protocol versions. However, to ensure that proper communication
continues between all core group members, you must make sure that
all member of a particular core group use the same version of a core
group protocol.
To change the version of a core group protocol
complete the following steps.
Procedure
- In the administrative console, click and select
an existing core group.
- Under Additional Properties, click .
- Change the value of either the IBM_CS_WIRE_FORMAT_VERSION
or IBM_CS_HAM_PROTOCOL_VERSION custom property.
If you
are updating the lower level protocols, which are also referred to
as the lower level wire format protocols, change the value of the
IBM_CS_WIRE_FORMAT_VERSION custom property.
If you are updating
the higher level protocols, which are also referred to as the high
availability manager protocols, change the value of the IBM_CS_HAM_PROTOCOL_VERSION
custom property.
To update either of these custom properties,
complete one of the following substeps:
- If the property that you want to update does not already
exist, click New and then specify either IBM_CS_WIRE_FORMAT_VERSION or IBM_CS_HAM_PROTOCOL_VERSION in
the Name field and the appropriate version
ID in the Value field.
- If the property that you need to update already exists,
click on the property name, and specify the appropriate version ID
in the field.
- Click OK, and then click Review.
- Select Synchronize changes with nodes,
and then click Save.
Results
After synchronization completes, the high availability manager
automatically detects the configuration changes and starts to use
the new core group protocol version with these core group members.