Wireless Mesh Networks That Scale Like Switch Stacks
Wired Switch Stacks are Scalable and Stable.
Fig. 1. Wired switches "split" up the wired network into manageable sections

Large wired networks are split up into smaller, more manageable sub-networks (domains or "channels"), each of which operate independently. Layer 2 Switches manage these domains and also pass data to and from other domains - line colors above.

Each switch has one Uplink port and one or more downlink ports operating on different domains/"channels" .

Switches naturally self organize themselves to form a scalable tree structure, called a network switch stack. The switch -- with one uplink "port" and one or more downlink "ports" -- is the basis for the Internet Age as we know it today.  Its predecessor, the wired hub networks, used a single link. Second generation mesh resemble a wireless version of the hub architecture.

Structured MeshTM  Radios Emulate Wired Switch Ports.

Fig. 2. Meshdynamics uplink and down link radios "split" channel domains..

Meshdynamics'  uplink and downlink radios communicate on different RF domains, represented by RF channel colors, above.

Our wireless network is "split up" into distinct sub domains, selected dynamically to ensure minimal contention (interference). Each node is responsible for a sub network and sharing information to and from other domains, through "heart beats".

Meshdynamics Structured MeshTM  -- a wireless equivalent of Switch Stacks -- has proven tree-like scalable performance.

Structured MeshTM Self Forms and Self Heals Automatically.

Fig. 3. "Wireless" Switch Stack self forms and heals autonomously.

Like wired switches, The MeshControlTM software intelligence runs in each node permits it to function exactly as Layer 2 switches do. For example: a failure of any node prompts immediate coordinated reconnections around the network to bypass the failed switch/node, see animation above. When the node is return to service, its neighbors recognize its presence and recalculate the best connections once again. This capability also makes additions and expansions to the network very straightforward, as new nodes may be simply configured with the proper security information, then powered-up. New nodes automatically are added to the network based on an exchange of information between the existing nodes, that are continually monitoring the environment.

Our nodes connect as branches of a tree. As in wired switches, a tree based routing is scalable, efficient and deterministic.
Additionally, the loss of one branch of the tree, does not cripple the entire network, Fig, 3. Tree based networks are inherently scalable and self healing. Our nodes manage branches of the "tree", with added features to support mobility, new radios etc.

Meshdynamics Structured MeshTM  -- a wireless equivalent of Switch Stacks -- has proven rapid self forming and self healing.

Switch Stacks have faster routing updates. [Mobility Mesh Nodes]

Enterprise class network switches use an efficient tree structure for routing. The switch stack tree like structure uses simpler routing mechanisms - trees have no loops and complications of looping are thus eliminated. The routing table is O(n) in size.

As the network scales up, the wired networks scale accordingly - more switches are added to continue to split up the domain.
Routing updates continue to be  fast,- even with many mobile mesh nodes, with rapidly changing network topology

In contrast, a single radio hub like structure has routing table size O(n2) .Update times grow exponentially with n. As n increases (e.g. the network grows), hub based architectures perform poorly and eventually run out of steam.

See Also:

1.   Third Generation Mesh Networks
2.   Scalable Mesh Network Architectures
3.   Radio And Protocol Agnostic Approach
4.   Competitive Performance Analysis