Sin gl e - N I C C o n fi gu ra t i o n s wi th T C P a nd U D P C h an ne l s
Single-NIC Configurations with TCP and UDP Channels
In a simple network configuration for a server having a single NIC, one or more network channels
may be created to support SIP messages over UDP and TCP, or SIPS over TLS. It is helpful to
understand how this simple configuration affects information in the OSI model, so that you can
understand how more complex configurations involving multihomed hardware and load
balancers affect the same information.
Figure 2-2 Single-NIC Network Channel Configuration
Figure 2-2 shows a single engine tier server instance with a single NIC. The server is configured
with one network channel supporting SIP over UDP and TCP. (SIP channels always support both
UDP and TCP transports; you cannot support only one of the two.) Figure 2-2 also shows two
clients communicating with the server, one over UDP and one over TCP.
For the TCP transport, the outgoing datagram (delivered from WebLogic SIP Server to the UA)
contains the following information:
z Layer 3 includes the source IP address specified by the network channel (10.1.1.10 in the
example above).
z Layer 4 includes the source port number allocated by the underlying operating system.
Incoming TCP datagrams (delivered from the UA to WebLogic SIP Server) contain the following
information:
Configuring Network Resources
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