StreamCaster MIMO Radio User Manual 3/17/15
10017C000 Silvus Technologies Confidential Page
6. Wired Backbone
Wired Backbone extends the StreamCaster mesh functionality over LAN (Ethernet) and WAN
(Internet) links. This feature is transparent to end-users - they do not have to re-configure their
devices in any manner to use this feature.
The StreamCaster routing protocol will automatically detect and route data on wired links to
preserve air bandwidth.
6.1 LAN Backbone
The LAN backbone feature allows more than one radio to be connected to a LAN.
6.1.1 Implementation
One of these radios must be configured as a “gateway” radio. This radio then begins listening
promiscuously on its ethernet interface to “register” all devices on the LAN as being connected
to the gateway radio. At the same time it auto-detects other non-gateway radios connected to the
LAN and establishes “wired” links to them. StreamScape Web GUI will show LAN links with
SNR of 150 dB to differentiate from wireless links.
The non-gateway radios do not register any devices, they merely act as relays. The gateway radio
will forward traffic originating from the LAN, destined for a device attached to a wireless radio,
to the non-gateway radio that is closest to the destination. Similarly, any traffic originating from
a device attached to a remote wireless radio, destined to a device on the LAN will be forwarded
by non-gateway radios to the gateway radio. The gateway radio will then send it to the device.
Currently we support data rates of up to 65 Mbps on the LAN without encryption. Since all LAN
traffic goes via the gateway radio, this is the upper limit of all traffic that can enter or go out of
the LAN from/to devices connected to wireless radios. Of course, this limit does not affect the
throughput between two devices connected directly to the LAN backbone.
6.1.2 Use Case
Consider the following scenario. A business wants to do video monitoring of its grounds. High
speed LAN hookups are available only in the HQ building. They want to use the StreamCaster
radios on towers to provide complete coverage of the grounds. All video feeds are sent back and
displayed at the HQ. To conserve air bandwidth and possible interference to other users, we want
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