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Chapter 7 Wireless LAN
NBG-416N User’s Guide
78
Fragmentation
Threshold
The threshold (number of bytes) for the fragmentation boundary for
directed messages. It is the maximum data fragment size that can be
sent. Enter an even number between 256 and 2346.
This field is not available when Super Mode is selected.
Beacon
Interval
When a wirelessly networked device sends a beacon, it includes with it a
beacon interval. This specifies the time period before the device sends
the beacon again. The interval tells receiving devices on the network
how long they can wait in low-power mode before waking up to handle
the beacon. This value can be set from 20 to 1024 ms. A high value
helps save current consumption of the access point.
DTIM Period Delivery Traffic Indication Message (DTIM) is the time period after which
broadcast and multicast packets are transmitted to mobile clients in the
Active Power Management mode. A high DTIM value can cause clients to
lose connectivity with the network. This value can be set from 1 to 10.
Preamble Type A preamble affects the timing in your wireless network. There are two
preamble modes: long and short. If a device uses a different preamble
mode than the NBG-416N does, it cannot communicate with the NBG-
416N.
CTS Protection When set to None, the NBG-416N protects wireless communication
against interference.
Select Auto to let the NBG-416N determine whether to turn this feature
on or off in the current environment.
Tx Power This field controls the transmission power of the NBG-416N. When using
the NBG-416N with a notebook computer, select a lower transmission
power level when you are close to the AP in order to conserve battery
power.
Extension
Channel
If you select Auto 20/40MHz as your Channel Bandwidth in the
Wireless LAN > General screen, the extension channel enables the
NBG-419N to get higher data throughput. This also lowers radio
interference and traffic.
Aggregation Select Enable to allow the grouping of several A-MSDUs (Aggregate
MAC Service Data Units) into one large A-MPDU (Aggregate MAC Protocol
Data Unit). This function allows faster data transfer rates.
Short GI Select Enable to use Short GI (Guard Interval). The guard interval is the
gap introduced between data transmission from users in order to reduce
interference. Reducing the GI increases data transfer rates but also
increases interference. Increasing the GI reduces data transfer rates but
also reduces interference.
Enable Intra-
BSS Traffic
A Basic Service Set (BSS) exists when all communications between
wireless clients or between a wireless client and a wired network client
go through one access point (AP).
Intra-BSS traffic is traffic between wireless clients in the BSS. When
Intra-BSS is enabled, wireless client A and B can access the wired
network and communicate with each other. When Intra-BSS is disabled,
wireless client A and B can still access the wired network but cannot
communicate with each other.
Apply Click Apply to save your changes to the NBG-416N.
Reset Click Reset to reload the previous configuration for this screen.
Table 28 Network > Wireless LAN > Advanced (continued)
LABEL DESCRIPTION
78


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