Local Mesh; Key Concepts; Simultaneous Ap And Local Mesh Support - HP MSM7xx Management And Configuration Manual

Local mesh

Key concepts

Key concepts

The local mesh feature enables you to create wireless links between two or more APs. These
links provide a wireless bridge that interconnects the networks connected to the Ethernet
port on each AP.
The local mesh feature replaces the need for Ethernet cabling between APs, making it easy to
extend your network in hard-to-wire locations or in outdoor areas.
Key local mesh features include:
 Automatic link establishment: Nodes automatically establish wireless links to create a
full-connected network. A dynamic network identifier (local mesh group ID) restricts
connectivity to groups of nodes, enabling distinct groups to be created with nodes in the
same physical area.
 Provides fall-back operation to recover from node failure. In a properly designed
implementation, redundant paths can be provided. If a node fails, the mesh will
automatically reconfigure itself to maintain connectivity.
 Maintains network integrity when using DFS channels. In accordance with the
802.11h standard, dynamic frequency selection (DFS) detects the presence of certain
radar devices on a channel and automatically switches the network node to another
channel if such signals are detected. 802.11h is intended to resolve interference issues
with military radar systems and medical devices.
Note
Depending on the radio regulations of some countries, DFS channels are only available on the
802.11a/n bands, which are the preferred band for local mesh backhaul. If more than one
node detects radar simultaneously and must switch channels, each node does not necessarily
switch to the same channel, and the network might never reconverge. To avoid this problem,
local mesh detects a change in channel and provides a means to reconnect on other channels
by scanning on multiple channels. See

Simultaneous AP and local mesh support

APs can be configured to support both access point and local mesh functionality whether
they have a single radio, or multiple radios.
Single radio APs
A single radio can be configured to simultaneously support wireless users and one or more
local mesh links. Although this offers flexibility it does have the following limitations:
 The total available bandwidth on the radio is shared between all local mesh links and
wireless users. This can result in reduced throughput if lots of traffic is being sent by both
wireless users and the local mesh links. You can use the QoS feature to prioritize traffic.
 It limits you to using the same radio options for both wireless clients and local meshes.
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Operating channel on page 13-6.