SIP IP sprayer
SIP in WebSphere provides an IP sprayer. Use the attributes set in the IP sprayer configuration panel to embed the IP sprayer host name and port in outgoing SIP messages:
- TCP, SSL, UDP host -- the host of the IP sprayer device that is fronting the proxy.
- TCP, SSL, UDP port -- the port of the IP sprayer device that is fronting the proxy.
When configuring for MAC forwarding, also configure the proxy channel chains to listen on the local loopback address.
SIP enabled Edge services
- A SIP Advisor runs on the WAS load balancer:
- OPTIONS message sent over TCP to monitor SIP proxies
- Message interval is configurable. Default is 7 seconds
- The SIP Advisor application runs on the SIP Container and responds to OPTIONS messages sent from the SIP Advisor.
- If an error response occurs, or there is no response, or the TCP connection fails, the proxy is removed from the active list.
- The SIP Advisor continues to look for the SIP proxy after a failure.
SIP proxy information published to the containers
SIP proxies publish client facing host interface information to the containers it is fronting via WLM. When fronted by an IP sprayer, the proxy will publish the IP sprayer information instead of its own host information. This information is inserted into Record-Route headers by the container for proxy applications running on the container. The SIP proxy also inserts this information into its via headers for outbound requests.
Related concepts
SIP high availability
Related tasks
Browse all SIP topics