Chapter 7 Wireless
VMG8825-B Series User’s Guide
108
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 50ms to 1000ms. A high
value helps save current consumption of the access point.
DTIM Interval
Delivery Traffic Indication Message (DTIM) is the time period after which broadcast and
multicast packets are transmitted to mobile clients in the Power Saving mode. A high DTIM
value can cause clients to lose connectivity with the network. This value can be set from 1 to
255.
802.11 Mode
For 2.4GHz frequency WLAN devices:
• Select
802.11b Only
to allow only IEEE 802.11b compliant WLAN devices to associate with
the VMG.
• Select
802.11g Only
to allow only IEEE 802.11g compliant WLAN devices to associate with
the VMG.
• Select
802.11n
Only
to allow only IEEE 802.11n compliant WLAN devices to associate with
the VMG.
• Select
802.11b/g Mixed
to allow either IEEE 802.11b or IEEE 802.11g compliant WLAN
devices to associate with the VMG. The transmission rate of your VMG might be reduced.
• Select
802.11b/g/n Mixed
to allow IEEE 802.11b, IEEE 802.11g or IEEE802.11n compliant
WLAN devices to associate with the VMG. The transmission rate of your VMG might be
reduced.
For 5GHz frequency WLAN devices:
• Select
802.11a Only
to allow only IEEE 802.11a compliant WLAN devices to associate with
the VMG.
• Select
802.11n Only
to allow only IEEE 802.11n compliant WLAN devices to associate with
the VMG.
• Select
802.11ac Only
to allow only IEEE 802.11ac compliant WLAN devices to associate with
the VMG.
• Select
802.11a/n Mixed
to allow either IEEE 802.11a or IEEE 802.11n compliant WLAN devices
to associate with the VMG. The transmission rate of your VMG might be reduced.
• Select
802.11n/ac Mixed
to allow either IEEE 802.11n or IEEE 802.11ac compliant WLAN
devices to associate with the VMG. The transmission rate of your VMG might be reduced.
• Select
802.11a/n/ac Mixed
to allow IEEE 802.11a, IEEE 802.11n or IEEE802.11ac compliant
WLAN devices to associate with the VMG. The transmission rate of your VMG might be
reduced.
802.11 Protection Enabling this feature can help prevent collisions in mixed-mode networks (networks with both
IEEE 802.11b and IEEE 802.11g traffic).
Select
Auto
to have the wireless devices transmit data after a RTS/CTS handshake. This helps
improve IEEE 802.11g performance.
Select
Off
to disable 802.11 protection. The transmission rate of your VMG might be reduced in
a mixed-mode network.
This field displays
Off
and is not configurable when you set
802.11 Mode
to
802.11b Only
.
Preamble
Select a preamble type from the drop-down list box. Choices are
Long
or
Short
for more information.
This field is configurable only when you set 802.11 Mode to
802.11b
.
Protected
Management
Frames
Protected Management Frames (PMF) protects some types of management frames, such as
action frames.
Select
Capable
to enable the VMG to support client devices using PMF. Select
Required
to
make PMF mandatory for all client devices. Select
Disabled
to disable the feature.
Apply
Click
Apply
to save your changes.
Cancel
Click
Cancel
to restore your previously saved settings.
Table 25 Network Setting > Wireless > Others (continued)
LABEL
DESCRIPTION