Publishers send multicast messages to subscribers from class D IP addresses which must range from 224.0.2.0 – 224.0.255.0.
224.0.2.0 is the default multicast IP address assigned by the installer for all publishers.
If you plan to perform a custom or express installation, review the
default multicast channel assignment with your network administrator.
The installer assigns 224.0.2.0 as
the default multicast IP address for all publishers. If this channel
is in use or not appropriate for your site, ask your administrator
to assign an appropriate multicast IP address for RAP message
traffic.
If you intend to perform a demo install, you can skip this
step. The installer automatically assigns 224.0.2.0 as
the multicast IP address for all publishers and subscribers.