User's Manual
44
• Roaming Assistant: In network congurations that involve
multiple Access, Points or wireless repeater, wireless clients
sometimes cannot connect automatically to thefts available
AP because they are still connected to the main wireless
router. Enable this setting so that the client will disconnect
from the main wireless router if the signal strength is under a
specic threshold and connect to a stronger signal.
• Enable IGMP Snooping: Enable this function allows
the IGMP ( Internet Group Management Protocol ) to be
monitored among devices and optimizes wireless multicast
trac.
• Multicast rate (Mbps): Select the multicast transmission
rate or click Disable to switch o simultaneous single
transmission.
• Preamble Type: Preamble Type denes the length of time
that the router spent for CRC (Cyclic Redundancy Check). CRC
is a method of detecting errors during data transmission.
Select Short for a busy wireless network with high network
trac. Select Long if your wireless network is composed of
older or legacy wireless devices.
• AMPDU RTS: Enable this function allows to build a group
of frames before they are transmitted and use RTS for every
AMPDU for communication among 802.11g and 802.11b
devices.
• RTS Threshold: Select a lower value for RTS (Request to
Send) Threshold to improve wireless communication in a
busy or noisy wireless network with high network trac and
numerous wireless devices.
• DTIM Interval: DTIM (Delivery Trac Indication Message)
Interval or Data Beacon Rate is the time interval before a
signal is sent to a wireless device in sleep mode indicating
that a data packet is awaiting delivery. The default value is
three milliseconds.
• Beacon Interval: Beacon Interval is the time between one
DTIM and the next. The default value is 100 milliseconds.
Lower the Beacon Interval value for an unstable wireless
connection or for roaming devices.