DIR-825/AC Wireless AC1200 Dual Band Gigabit Router with
3G/LTE Support and USB Port
User Manual
Configuring via Web-based Interface
Parameter Description
Frag Threshold
The maximum size (in bytes) of a non-fragmented packet. Larger
packets are fragmented (divided).
DTIM Period
The time period (in seconds) between sending a DTIM (a message
notifying on broadcast or multicast transmission) and data
transmission.
TX Power
The transmit power (in percentage terms) of the router.
Drop multicast
Select the checkbox to disable multicasting for the router's WLAN.
Deselect the checkbox to enable multicasting from WAN
connections for which the Enable IGMP Multicast checkbox is
selected.
Bandwidth
The channel bandwidth for 802.11n devices in 2.4GHz band (the
Wi-Fi / Additional settings / 2.4 GHz page).
20MHz: 802.11n clients operate at 20MHz channels.
40MHz: 802.11n clients operate at 40MHz channels.
20/40MHz -: 802.11n clients operate at 20MHz or 40MHz channels
(the channel is combined with the previous adjacent channel).
20/40MHz +: 802.11n clients operate at 20MHz or 40MHz channels
(the channel is combined with the next adjacent channel).
The channel bandwidth for 802.11n and 802.11ac devices in 5GHz
band (the Wi-Fi / Additional settings / 5 GHz page).
20MHz: 802.11n and 802.11ac clients operate at 20MHz channels.
40MHz: 802.11n and 802.11ac clients operate at 40MHz channels.
20/40MHz -: 802.11n and 802.11ac clients operate at 20MHz or
40MHz channels (the channel is combined with the previous
adjacent channel).
20/40MHz +: 802.11n and 802.11ac clients operate at 20MHz or
40MHz channels (the channel is combined with the next adjacent
channel).
80MHz: 802.11ac clients operate at 80MHz channels.
20/40/80MHz -: 802.11ac clients operate at 20MHz, 40MHz, or
80MHz channels (the channel is combined with the previous
adjacent channels).
20/40/80MHz +: 802.11ac clients operate at 20MHz, 40MHz, or
80MHz channels (the channel is combined with the next adjacent
channels).
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