Comtech EF Data SLM-5650A - Manual (Page 405)

E–1
Appendix E. VIPERSAT
NETWORK APPLICATION
EXAMPLES
E.1 Overview
The SLM-5650A Satellite Modem’s optional Network Processor (NP) Interface Module (also
referred to as the “NP Interface” or the “card”), when installed and operating in Router Mode
OSPFv2 or BPM (Bridge Point-to-Multipoint) Mode, makes point-to-multipoint topologies
possible. This appendix provides the following Vipersat Network Application Examples:
• OSPFv2
• BPM (Bridge Point-to-Multipoint) Mode
E.2 OSPFv2 in a Shared Outbound Satellite Network
This section examines the challenges and solutions for using the SLM-5650A Satellite Modem
and Open Shortest Path First (OSPF) in a shared outbound/split path satellite network such as
Vipersat.
E.2.1 Shared Outbound Satellite Network Overview
A shared outbound network saves satellite bandwidth and reduces operating expenses by allowing
multiple remote terminals to share the same channel from a hub ground station.
Figure E-1 illustrates a satellite shared outbound network. Notably, the outbound interface at the
hub is not the same interface at which return traffic received. This is referred to as “split path.”