RADIUSdesk

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user_guide:md_plan_high_speed [2016/06/12 14:31] (current)
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 +====== Creating a high speed mesh by using dual radio nodes ======
 +  * During an early demonstration of MESHdesk the first question that was asked: **Does it supports dual radio nodes?**.
 +  * The answer at that time was //not yet, perhaps in the future//​....
 +  * Fast forward to today and we are proud to say that <wrap em>​MESHdesk does indeed also support dual radio nodes</​wrap>​.
  
 +------------------------
 +
 +===== The limitations of single radio nodes =====
 +
 +  * Unfortunately with a mesh there is a performance knock with each hop away from the gateway node. 
 +  * This performance knock is unavoidable even with dual radio nodes.
 +  * With single radio nodes there are however also the following to consider.
 +  * When you use single radio mesh nodes each node has two functions:
 +    * It has an ad-hoc connection with neighbor nodes. (This can be seen as the connecting wire between the nodes)
 +    * It typically also has one or more SSIDs to which clients can connect.
 +  * This means that each radio has to **time share** between these two functions.
 +  * Add to the mix that the mesh and SSID's are all on the same channel and it does not take a genius to see why people will ask //Does this system supports dual radio nodes//
 +
 +------
 +
 +===== Dual radio node alternative =====
 +  * When we have dual radio nodes we can create a mesh in the following way.
 +  * Use the 5G radio for the ad-hoc connection with the neighbor nodes.
 +  * Use the 2.4G radio for the SSIDs to which clients will connect.
 +  * Make sure each node's 2.4G radio is on a non-overlapping channel (1,6,11) to reduce interference.
 +  * Test shown that this configuration results in an <wrap em>​increase</​wrap>​ of the throughput of <wrap em>​nearly 3 times</​wrap>​ when compared to a mesh that consist of single radio nodes.
 +  * See the following diagram for an overview.
 +
 +{{ :​user_guide:​md:​highspeedmesh.png |}}