User's Guide

Table Of Contents
hwc_apstartup.fm
Configuring the Wireless AP
Configuring VLAN tags for Wireless APs
9034530-02,
March 2010
HiPath Wireless Controller, Access Points and Convergence Software V7.11, User Guide 209
•DTIM – Type the desired DTIM (Delivery Traffic Indication Message)
period — the number of beacon intervals between two DTIM beacons. To
ensure the best client power savings, use a large number. For example,
5. Use a small number to minimize broadcast and multicast delay. The
default value is 5.
Beacon Period – Type the desired time, in milliseconds, between
beacon transmissions. The default value is 100 milliseconds.
RTS/CTS – Type the packet size threshold, in bytes, above which the
packet will be preceded by an RTS/CTS (Request to Send/Clear to Send)
handshake. The default value is 2346, which means all packets are sent
without RTS/CTS. Reduce this value only if necessary.
Frag. Threshold – Type the fragment size threshold, in bytes, above
which the packets will be fragmented by the AP prior to transmission. The
default value is 2346, which means all packets are sent unfragmented.
Reduce this value only if necessary.
Max % of non-unicast traffic per Beacon period – Enter the maximum
percentage of time that the AP will transmit non-unicast packets
(broadcast and multicast traffic) for each configured Beacon Period. For
each non-unicast packet transmitted, the system calculates the airtime
used by eack packet and drops all packets that exceed the configured
maximum percentage. By restricting non-unicast traffic, you limit the
impact of broadcasts and multicasts on overall system performance.
Maximum Distance – Enter a value from 100 to 15,000 meters that
identifies the maximum link distance between APs that participate in a
WDS. This value ensures that the acknowledgement of communication
between APs does not exceed the timeout value predefined by the 802.11
standard.
The default value is 100 meters. If the link distance between
APs is greater than 100 meters, configure the maximum distance up to
15,000 meters so that the software increases the timeout value
proportionally with the distance between APs.
Do not change the default setting for the radio that provides service to
802.11 clients only.
Dynamic Channel Selection – Click one of the following:
•Off – Disables DCS.
Monitor Mode – If traffic or noise levels exceed the configured DCS
thresholds, an alarm is triggered and an information log is generated.
Active Mode – If traffic or noise levels exceed the configured DCS
thresholds, an alarm is triggered and an information log is generated.
In addition, the Wireless AP will cease operating on the current
channel and ACS is employed to automatically select an alternate
channel for the Wireless AP to operate on.