Multicast routing between remote networks

Rob Colman
June 24, 2013
Written by
Barix introduces a solution to help media companies, businesses and other multi-site network users route multicast traffic over remote network links, enabling bandwidth-efficient, multicast delivery over the public internet.
Multicast uses special destination addresses to target groups of subscribed devices, and deliver data and streams such as voice (general paging) and audio (background music). In contrast to standard connections where each device needs its own stream, multicast data distribution requires only a single stream to send the same content to any number of receivers on the same network segment, minimizing bandwidth and network usage. Multicast delivery is traditionally limited to private, in-house networks as Internet Service Providers block multicast traffic on normal Internet connections.
 
Barix has developed a multicast routing and tunneling firmware that turns its Barionet IP control devices into flexible, multisite multicast routers — effectively enabling delivery of multicast traffic over the public internet to remote locations. The solution forwards multicast IP blocks to remote receiving devices, re-packed as unicast streams. The receiving devices then re-issue the packets as multicast on the destination network.
 
The multicast routing and tunneling solution can be deployed across a large number of scenarios as functionality is independent of actual protocols. This enables the firmware to be used alongside automation, IP audio, video, VoIP, SIP or RTP streams, for example. Furthermore, the entire operation can be monitored over SNMP to enable a complete bird’s eye view of system efficiency.

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