Configuring Beacons; Configuring Burst And Fragment Size - Juniper NETWORK AND SECURITY MANAGER 2010.4 - CONFIGURING SCREENOS DEVICES GUIDE REV 01 Manual

Configuring ScreenOS Devices Guide

Configuring Beacons

Configuring Burst and Fragment Size

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In the NSM navigation tree, select Device Manager > Devices. Double-click the device
1.
object to open the device configuration.
In the device navigation tree, select Wireless Settings > Advanced, and then edit the
2.
default aging value.
The default is 300 seconds; acceptable range is 60 to 1,000,000 seconds. To disable
aging, set the value to 0 (zero).
A WAP broadcasts beacon packets to keep the wireless network synchronized and to
inform wireless clients of waiting data. A beacon packet includes data such as the wireless
LAN service area, the WAP address, and delivery traffic indicator maps (DTIMs).
To configure the beacon settings:
In the NSM navigation tree, select Device Manager > Devices. Double-click the device
1.
object to open the device configuration.
In the device navigation tree, select Wireless Settings > Advanced, and then edit the
2.
default values for the following settings:
Beacon Interval—The beacon interval is the amount of time between beacons sent by
the NetScreen-5GT Wireless to wireless clients. A beacon transmission includes the
beacon interval; the interval informs receiving devices how long they can wait in
low-power mode before waking up to handle beacons. Increasing the beacon interval
lessens the number of beacon responses required by a wireless client, enabling clients
to reduce battery power. The default value is 100 time units; acceptable range is 20
to 1,000 time units (1 time unit equals 1024 µs).
Beacon Interval Between DTIMs—This interval is the amount of beacon intervals
between DTIM messages, which inform wireless clients of waiting data. A lower value
enables wireless clients to download waiting data more often; a higher value enables
wireless clients to wait in low-power mode longer between DTIMs. When using a high
DTIM value, however, the client must stay active longer to collect waiting data, and
clients might miss broadcast and multicast traffic messages. The default value is 1
beacon interval; acceptable range is 1 to 255.
Use the burst and fragment setting to configure how the device transmits wireless packets
over the network. To configure the burst and fragment settings:
In the NSM navigation tree, select Device Manager > Devices. Double-click the device
1.
object to open the device configuration.
In the device navigation tree, select Wireless Settings > Advanced, and then edit the
2.
default values for the following settings:
Maximum Number of Frames in a Burst—The burst threshold defines the average
maximum number of frames a WAP can use to handle wireless traffic before the device
begins sending traffic in bursts. When wireless traffic exceeds the specified threshold,
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