User's Manual

88 Configuration

Nortel Networks Confidential

group consisting of four servers has provisioning for three public static

heartbeat addresses and three private static heartbeat addresses.

The only time when this condition may not hold is when a new server is

being introduced into an existing group that is currently providing

service. In this case, the new server is provisioned with the information

for all the other servers while the other servers are not yet updated with

provisioning for the new server.

The reliability manager is configured by provisioning of engineering-

and network-related parameters. The engineering parameters

determine the timeout intervals and failure detection thresholds. The

NSD parameters define the visible network interfaces used by the

reliable services. The reliability manager service defines all the NSD

data for the set of servers.

Note that checkboxes exist within several of the configuration data

areas to enable or disable use of the data. In some cases, not all items

are provisioned. For these cases, do not select those checkboxes.

The provisioning also allows for the use of label/value pairs. Where

noted, you can use an address label in place of an explict address. This

capability simplifies the configuration process where the same data are

provisioned multiple times. For the Transport Manager configuration,

the Module Parameter label/value pairs are values associated with the

entire component (the SIP Application Module). The Service

Parameters apply only to the service instance.

The default configuration includes, in the Server Parameter fields,

Public_Static_Address and Private_Static_Address labels. These refer

to the fixed IP addresses of the server. In the Network Service

Descriptor area, the Service Parameter label/value pairs define the

Public_Service_Address and the Private_Service_Address. These

labels refer to the service addresses for a particular service instance

that could be enabled on any one of many servers in the service NSD

group.

Active-standby server group configuration

Configuration of an active-standby server group occurs as part of the

normal deployment process. When servers are deployed, the

administrator is prompted for configuration data specific to that

component. During deployment, the administrator will see a

configuration tab called Transport Manager. There is one set of fields

for the engineering parameter data, one set of fields for the Heartbeat

Parameters, and multiple sets of fields for the NSD data.