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5 beacon interval, 6 multicasting, Beacon interval multicasting – Fortress Technologies ecure Wireless Access Bridge User Manual

Page 38

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Fortress Bridge: Configuration

28

3.3.2.5

Beacon Interval
The Bridge’s radios transmit beacons at regular intervals to
announce their presence on the network. You can configure
the number of milliseconds between beacons in whole
numbers between

25

and

1000

. You cannot disable the

beacon.

The default beacon interval is

100

milliseconds.

3.3.2.6

Multicasting
Wireless is an inherently broadcast medium. A multicast
packet, like any other, is broadcast (by the root Bridge) to all
nodes (non-root Bridges) on the wireless network. Each non-
root Bridge then examines the packet and:

‹

If the Bridge is an intended receiver, it accepts the packet.

and/or

‹

If the Bridge is serving as a repeater for an outlying Bridge
that is an intended receiver, it passes the packet along this
route.

or

‹

If the Bridge is neither an intended receiver nor the
repeater for an intended receiver, it drops the packet.

Non-root Bridges on which

Multicast

is disabled will drop all

multicast packets.

The

Multicast

function applies exclusively to non-root Bridges,

and so can only be

Enabled

on Bridges with a

Radio Mode

setting of

Bridge

and a

Bridge Mode

setting of

Non-Root

.

The

Multicast

field is grayed out for Bridges with a

Radio Mode

of

AP

or with a

Bridge Mode

of

Root

.

The

Multicast

field is also grayed out for Bridge’s with

STP

Enabled

on the

LAN

SETTINGS

screen. Because STP requires

multicasting capability,

Multicast

is automatically

Enabled

(and

the field that configures the setting is grayed out) when

STP

is

detail: