User Manual

Version 3.03 SPEEDLAN 9000 Series Installation and Operation User Guide
1-10 Introduction
SPEEDLAN’s Mesh Cloud Architecture
Separate multi-user and residential models (SPEEDLAN 9101 for business and
residential use, as well as the SPEEDLAN 9104 for residential use) are specifically
designed to meet the connectivity demands for everyone from single users to large
corporations. These models will communicate with every other mesh router within an
unobstructed 1/4 mile radius to a 1/2 mile radius.
Figure 1-5: An example of a mesh network
SPEEDLAN 9000 Mesh Core Components
SPEEDLAN 9000 Mesh protocol includes three central components which are neighbor
discovery, topology updates, and routing.
Neighbor Discovery
Neighbor discovery occurs when each router sends a broadcast "hello" message to
detect those routers to which it has line-of-sight. The "hello" sender acknowledges those
replies, whereupon the sender and the neighboring router add each other to their
respective active neighbor lists. Neighbor discovery protocol messages are sent by each
router on startup and periodically thereafter. The periodic messages are required to
determine when a former neighbor can no longer be reached, whereupon it is removed
from the active neighbor list. Neighbor discovery messages are relatively short and are
sent infrequently enough that they don't constitute significant overhead.