In this setup guide, a wireless network topology using the Mesh feature of the EnGenius® Neutron system. The example presented here will have three EWS1205CAMs linked together via mesh, as shown in the figure below. Note, in order for mesh to be available, the Neutron controller switch firmware must be version c1.8.57 or later, or version 0.12.8 or later on ezMasterTM.
In this topology of the mesh domain, the two Remote Nodes are each one hop away from the Root Node. The bandwidth requirment per EWS1025CAM camera (using H.264, 1080P, 30 fps) is approximately 5-6 Mbps. EnGenius® does not recommend having a Remote Node farther than three hops from the RootNode. In the above example, we have the Root Node labeled as, “root” , and the two Remote Nodes labeled as “nonroot1” and “nonroot2”.
Prior to adding APs and defining AP Groups, designate the band to enable mesh on, and establish the key parameters such as the numerical mesh domain (Mesh ID) and password to join the mesh domain. Set an appropriate threshold, so that a mesh link to a Remote Node will not be established if the RSSI reading is below the threshold. These settings are found under Controller>Mesh>Mesh Profile. This setting is global to the Neutron Controller Switch, and will be common amongst all AP Groups that have mesh enabled.
Best Practice: The network design should cluster the APs into groups consisting of up to four Remote Nodes that are only one hop away from a Root Node. Thus, at least 20% of your APs, distributed roughly evenly throughout the property, should be Root Nodes. Each Remote Node is therefore nominally only one hop away from a Root Node. In the event of a failure of a Root Node, the nearby Remote Nodes will then only be 2-3 hops away from another Root Node. This approach generally requires creating additional Root Nodes, which can be done either by running Ethernet or fiber-optic cable to the remote locations, or by establishing dedicated point-to-(multi)point WDS Bridge links to create “wireless wires” from the root AP back to the wired network.
In mesh environments with multiple Root Nodes, mesh clusters can be established by creating a unique AP Group per mesh cluster. Thus, each AP Group shall contain one Root Node and the desired Remote Nodes that should nominally be connecting to it. The settings of each AP Group are identical, except for the channel. Each AP Group needs to be on an independent channel to ensure that neighboring mesh clusters do not self-interfere.
Creating an AP Group / Mesh ClusterConnect the Root Node to the Neutron Controller Switch, and then add the Root Node in the same manner as any wired Neutron access point. In order for the mesh feature to be enabled, the Root Node must be in a dedicated AP Group with the mesh feature enabled. All APs that are part of the same mesh cluster need to be placed in the same AP Group.
Add the Root Node to the Neutron Controller Switch (e.g EWS1025CAM), to be managed by the controller, just as is done with any wired Neutron access point.
Add the detected Rood Node, and then assign the unit a static IP address or let the unit get an IP address via DHCP.
After adding the AP to the Neutron Controller Switch, EnGenius® recommends that the device be named by its location with a “root” or similar at the end, to aid in the identification of the AP once all mesh APs are managed by the Neutron Controller Switch. This is done by clicking the current device name under the column device name.
The AP name change should now be reflected under the “Device Name” column.
Once the Root Node is online, create an AP Group to add all the devices that are going to be in the mesh cluster. This will enable all of the mesh APs to be easily managed from the controller.
The AP Group setting is found under Controller→Device Management→AP Groups. Click the “Add” button to create a new group for all the mesh APs that shall be in the mesh cluster.
Name the newly created group and add the Root Node to the group.
Once added to the AP Group, verify the appropriate Radio Settings. Make sure the Country is appropriate for the regulatory domain the wireless system is deployed in.
In order for mesh to be enabled without any errors, especially on the 5GHz band, the following items much match:
Channel HT Mode