Datum Systems M7 Series, Инструкция по установке и эксплуатации

Страница: 13 / 190

M7/M7L/M7LT Modular Satellite Modem Operation
M7/M7L/M7LT - Rev. 0.05 1-7
Figure 1-3
– Four (4) Site Point-to-Multipoint Network
A Mesh network is used when all sites in a network need to be connected to all other sites within that
same network with a single satellite link. This could be done by installing multiple PtP networks
between each network site, but as the number of network nodes increases, there is a dramatic
increase in the number of carriers that would be added and also an increase in the number of
modems required at each site. At some point, this becomes unmanageable and the alternative is to
use a Mesh network topology instead of multiple PtP networks. At each site in a Mesh network there
is a single carrier that contains all the information destined for all the nodes within the network. In an
IP based network there is considerable statistical satellite bandwidth savings by using the shared
outbound carrier from each site because of the typical traffic patterns consistent with IP networks. A
typical PtMP network is shown in Figure 1-4
Figure 1-4
– Four (4) Site Mesh Network