Draytek Vigor2912 Series User Manual

Vigor2912 Series User’s Guide
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This page allows users to set advanced settings such as operation mode, channel bandwidth,
guard interval, and aggregation MSDU for wireless data transmission.
Available settings are explained as follows:
Item Description
Operation Mode
Mixed Mode – the router can transmit data with the ways
supported in both 802.11a/b/g and 802.11n standards.
However, the entire wireless transmission will be slowed
down if 802.11g or 802.11b wireless client is connected.
Green Field – to get the highest throughput, please choose
such mode. Such mode can make the data transmission
happening between 11n systems only. In addition, it does
not have protection mechanism to avoid the conflict with
neighboring devices of 802.11a/b/g.
Channel Bandwidth
20- the router will use 20MHz for data transmission and
receiving between the AP and the stations.
20/40 – the router will use 20MHz or 40MHz for data
transmission and receiving according to the station
capability. Such channel can increase the performance for
data transmission.
Guard Interval
It is to assure the safety of propagation delays and
reflections for the sensitive digital data. If you choose auto
as guard interval, the AP router will choose short guard
interval (increasing the wireless performance) or long guard
interval for data transmit based on the station capability.
Aggregation MSDU
Aggregation MSDU can
combine frames with different
sizes. It is used for improving MAC layer’s performance
for some brand’s clients. The default setting is Enable.
Long Preamble
This option is to define the length of the sync field in an
802.11 packet. Most modern wireless network uses short
preamble with 56 bit sync field instead of long preamble
with 128 bit sync field. However, some original 11b
wireless network devices only support long preamble. Click
Enable to use Long Preamble if needed to communicate
with this kind of devices.
Packet-OVERDRIVE
This feature can enhance the performance in data
transmission about 40%* more (by checking Tx Burst). It
is active only when both sides of Access Point and Station

Draytek Vigor2912 Series Specifications

General

Brand	Draytek
Model	Vigor2912 Series
Category	Network Router
Language	English