Creating a Virtual Home Network

A virtual home network is a home network that resides entirely within the Oracle® Enterprise Session Border Controller, as does a real home network. The difference between the two is the real home network also has a physical connection to the Oracle® Enterprise Session Border Controller.

The internal home realm/network is usually configured with addresses within the special loopback range (127.0.0.0/8) as described in RFC 3330. This applies to the SIP port addresses for the home realm's SIP interface, and all home addresses for SIP NATs. The address 127.0.0.1 should not be used because it conflicts with the default loopback interface setup by the system for inter-process communication.

To create a virtual home network:

1. Set the name and subport ID of the network interface associated with the home realm element to lo0:0.
2. To enable the SIP proxy to listen for messages on the virtual home realm, configure the home realm ID. It must correspond to the realm’s identifier, in which you set the network interface subelement to point to the appropriate network interface element.

   The following table lists the field values you need to set when you are using SIP NAT bridge functionality and you do not have a real home network.

   Configuration Element		Sample Values
   realm configuration	identifier	home
   	network interfaces	lo0:0
   	address prefix	127.0.0.0/8
   SIP configuration	home realm ID	home
   	SIP ports address	127.0.0.100