Siemens SCALANCE W1750D UI, Руководство по настройке

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SCALANCE W1750D UI
Configuration Manual, 02/2018, C79000-G8976-C451-02
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Mesh AP Configuration
28
28.1 Mesh Network Overview
The SCALANCE W secure enterprise mesh solution is an effective way to expand network
coverage for outdoor and indoor enterprise environments without any wires. As traffic
traverses across mesh APs, the mesh network automatically reconfigures around broken or
blocked paths. This self-healing feature provides increased reliability and redundancy and
allows the network to continue operation even when an AP stops functioning or if a
connection fails.
Mesh APs
Mesh network requires at least one valid uplink (wired or 3G) connection. Any provisioned
AP that has a valid uplink (wired or 3G) functions as a mesh portal, and the AP without an
Ethernet link functions as a mesh point. The mesh portal can also act as a VC. Mesh portals
and mesh points are also known as mesh nodes, a generic term used to describe APs
configured for mesh.
If two APs have valid uplink connections, there is redundancy in the mesh network, and most
mesh points try to mesh directly with one of the two portals. However, depending on the
actual deployment and RF environment, some mesh points may mesh through other
intermediate mesh points.
In an SCALANCE W mesh network, the maximum hop count is two nodes (point > point >
portal) and the maximum number of mesh points per mesh portal is eight.
Mesh APs detect the environment when they boot up, locate and associate with their nearest
neighbor, to determine the best path to the mesh portal.
The 2.4 GHz radio is always used for client traffic, while the 5 GHz radio is always used for
both mesh-backhaul and client traffic.
Note
Mesh service is automatically enabled on 802.11a band, and this is not configurable.
For AP-RW variants, the mesh network must be provisioned for the first time by plugging into
the wired network. After that, mesh works on AP-RWs like any other regulatory domain.
Mesh Portals
A mesh portal (MPP) is a gateway between the wireless mesh network and the enterprise
wired LAN. The mesh roles are automatically assigned based on the AP configuration. A
mesh network could have multiple mesh portals to support redundant mesh paths (mesh
links between neighboring mesh points that establish the best path to the mesh portal) from
the wireless mesh network to the wired LAN.
The mesh portal broadcasts a mesh services set identifier (MSSID/ mesh cluster name) to
advertise the mesh network service to other mesh points in that SCALANCE W network.
This is not configurable and is transparent to the user. The mesh points authenticate to the