Streaming Media Applications; Remote Site Originated Multicast; Hx Gateway Multicast Management; Satellite Router Multicast Support - Hughes HX System System Overview

Streaming media
Remote Site Originated
HX gateway multicast
management
Satellite router multicast
support
Chapter 7 • Multicast features
60
1037852-0001 Revision A
Streaming media applications can be served by systems on the
enterprise network and reliably received by systems on remote
applications
LANS by simply configuring the IP gateway to provide the
required constant bandwidth, and the satellite routers to recognize
and pass IGMP traffic. No special equipment or software is
required to use the HX system as a pipe for video conferences,
video and audio streams, and so on.
The HX System Remote Site Originated Multicast (RSOM)
feature adds the capability to carry IP multicast traffic, which
Multicast
originates at a remote site, across an inroute to the NOC. At the
NOC, the traffic can be forwarded to a customer's data center
and/or back to the outroute to the customer's other remote sites.
The HX gateway can support up to 10 simultaneous multicast
streams. Each IP gateway can be configured with minimum and
maximum committed information rate (CIR) thresholds for each
application, as well as CIR for the entire gateway (based on the
contracted grade of service).
Vision UEM provides a number of features for managing the
multicast capability. These include a multicast gateway statistics
screen in Vision UEM and SNMP MIBs that provide multicast
statistics, including:
• Received multicast bytes
• Transmitted multicast bytes
• Multicast frame collisions
Satellite routers can be configured, through their profiles, with a
variety of multicast-related parameters, including:
• IGMP enabled
• IGMP broadcast advertisement enabled
• LAN interfaces that can route multicasts
The Vision UEM interface also has screens for viewing
per-satellite router multicast statistics collected from the satellite
routers.
The HX multicast capability works transparently with
multicast-enabled PC applications like NetMeeting and others,
while minimizing latency and bandwidth required to transmit
multicast content.
Multicasts from the HX gateway are also used to prepopulate
DNS and web caches in satellite routers.