When SIP traffic and WebSphere High Availability Manager traffic
are not on the same networks, failures that affect SIP traffic might not be
detected by the HA Manager, resulting in loss of SIP traffic. You can configure
network outage detection on the same network as the SIP traffic to ensure
that failures which affect SIP traffic can be detected by the HA manager.
About this task
Define these SIP proxy custom properties to set the network outage
detection feature to ensure that SIP network failures are detected by the
HA Manager.
Procedure
- Specify the serverUDPPort custom property.
This custom property provides a free port number, such as 5080, that the proxy
can use to communicate with the servers and is used to configure the proxy's
network connection to the container.
- Specify the serverUDPInterface custom
property. This custom property specifies the IP address or hostname for the
SIP proxy traffic on the network and is used to configure the proxy's network
connection to the container.
- Specify the localOutboundTCPAddress custom
property. This custom property specifies the IP address or hostname for the
SIP proxy traffic on the network. This address defines the interface to use
to create proxy connections to the containers for the TCP and TLS.
- Specify the keepAliveInterval custom property.
This custom property specifies the interval, in milliseconds, at which keep
alives are sent
- Specify the keepAliveFailures custom property.
This custom property specifies the number of keep alive responses that must
be missed before the proxy determines that the connection with the SIP container
is lost.
Results
The proxy will send keep alive messages to the server at the configured
keep alive interval using the configured port and interface, which should
be the same port and interface as those used for other SIP traffic between
the proxy and the server.
If the proxy misses the number of responses
configured as keepAliveFailures, or the server misses that number of keep
alive requests, it will determine that SIP traffic should no longer be sent
between the proxy and the server. The proxy will stop sending SIP messages
to that server, and the server will restart and wait for connectivity to be
restored before resuming operation.