The HP MediaStream Server is a product
designed to provide Video-On-Demand (VOD) features for broadband
distribution of video content. The scope of the project was to provide SNMP support for
the server complex.The Video Server complex comprises of a
network of HP-UX and HP-RT (real time Unix) systems. All the real-time critical code
executes on HP-RT while administrative processes execute on the HP-UX system. Only the
HP-UX system is visible to the external world as the other systems are protected by a
firewall. Hence, any management requests are targeted at the HP-UX system. The software
architecture was based on the master-agent/sub-agent paradigm. The master agent executes
on the HP-UX system while the subagents execute on the other systems. They communicate
between themselves using a lightweight protocol. A unique and effective method was arrived
at to enable management stations to query the master agent for MIB variables maintained by
the various other systems.
The SNMP modules underwent successful acceptance and factory tests
and were included in the official market release of the MediaStream Server
