Apple AirPort Networks Anleitung zur Fehlerbehebung PDF herunterladen (Seite 35)

Connect Multiple

Base Stations

Wi-Fi was once described as reaching “only” about 150 feet, which

is a rough estimate of the radius of older 802.11b and g devices; with

802.11n and ac, the distance is sometimes cited as longer, or just as

“farther,” because it’s impossible to characterize with any precision

how Wi-Fi signals will pass through any arbitrary house, office, café,

airport, or store. Also, range measured as a linear dimension misstates

the problem of volume, the three-dimensional space to fill.

But you can extend the covered volume by adding more base stations

with overlapping signals. As a Wi-Fi adapter in a device moves across

overlapping regions, it can automatically switch base stations while

maintaining a network connection.

Know the Basics

When you extend a network, the additional base stations tend to be

dumb; that is, they don’t assign addresses or handle other features

you think of as belonging to a base station. Rather, one base station

remains smart, offering DHCP and NAT (if needed), among other

network choices. The rest pass through traffic from that main unit.

Dumb base stations are often called access points to distinguish them

from gateways.

Because dumb base stations (access points) just pass traffic through,

an adapter retains the same

IP address as it switches from one base

station to another, thus maintaining its connection in most cases.

There are two mix-and-match methods of extending your network:

• Add base stations via Ethernet. Ethernet requires wires, of course,

but has a huge speed benefit over wireless extensions.

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Apple AirPort Networks Anleitung zur Fehlerbehebung Seite 35