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Gemini G3 - User Manual
44
In the E-DBA environment, an outside sender-host might be interested in sending multicast packets to
any one of the following groups:
•
“All Base” group (not currently supported)
•
“All Mobile” group (DMP-IP only)
•
Various “Mobile Host” groups.
The Base (P3 in the illustration) units are directly connected to the outside network. ALL multicast
groups MUST be identified in the Base because the Base unit uses IGMP to register the memberships
to the multicast groups on behalf of the other units (Mobile units, Mobile Host units).
Figure 39 - Typical E-DBA Multicast Groups
Sender
Network
“All Base”
group
“All Mobile”
group
Base (P3)
Base (P3)
RF Air-
Mobile
Mobile
Mobile
Mobile
Mobile
“Mobile Host”
group 1
“Mobile Host”
group 2
Mobile Mobile
Mobile Mobile Mobile