Modifying Wireless Parameters
5-22
Modifying Wireless Parameters
The following AP wireless parameters can be modified as necessary:
•AP Density: Should only be changed when APs are moved closer or further apart from
each other. This parameter is only available when the AP is in Workgroup bridge
mode. See AP Density and Roaming on page 2-8 for more information.
•Transmit Rate: The transmit rate can be changed between the auto rate and fixed rate
options to accommodate a changing wireless network, such as a larger coverage area
or all clients were upgraded to a faster PC card. The transmit rate can also be changed
to accommodate the addition or reduction of noise in the coverage area. For more
information, see “Transmit Rate” on page 2-5.
•RTS Threshold: Should only be used to address frame collisions and lost messages in
the wireless network. If necessary, set the RTS Threshold to 500 to reduce or eliminate
collisions at the AP. See “RTS/CTS Protocol” on page 2-9.
At a RoamAbout client, use the RoamAbout Client Utility Link Test to determine if
the lowered RTS Threshold reduced collisions. You can also use the AP Manager, by
selecting Integrity from the menu bar, then selecting Link Test.
•Remote RTS Threshold: Should only be enabled to address a hidden station problem,
as described in “RTS/CTS Protocol” on page 2-9. This parameter is only available
on a RoamAbout R2 in Workgroup bridge mode.
•DTIM: This is the only configurable AP Power Management parameter. It is only
available when the AP is in Workgroup bridge mode. In nearly all environments, you
should not change the default DTIM of 1. See “802.11 Power Management” on page
2-11.
•Secure Access: When enabled, this prevents clients without the correct wireless
network name from connecting to this AP. It is only available when the AP is in
Workgroup bridge mode.
•Multicast Transmit Rate: Identifies the desired transmission speed for the broadcast
and multicast traffic as forwarded by the AP to the wireless LAN. You should use the
lowest speed that you want to support. If using applications that use multicast traffic
(for example, IGMP), you can increase this rate from the default of 2 Mbit/s Fixed.
NOTE: Enterasys Networks recommends that you use an xx Mbit/s Auto rate
setting.
If using a fixed rate of 11 or 5.5 Mbit/s on the AP, any clients with 2 Mbit/s
PC Cards will not be able to communicate with the AP.
NOTES