Users Guide

Dell PowerConnect W-AirWave 7.4 | Configuration Guide Configuration Reference | 133
3. Select Add or Save. The added or edited profile appears on the Profiles > SSID > HT SSID page.
Profiles > SSID > 802.11K
The 802.11k protocol provides mechanisms to APs and clients to dynamically measure the available radio
resources. In a 802.11k enabled network, APs and clients can send neighbor reports, beacon reports, and link
measurement reports to each other. This allows the APs and clients to take appropriate connection actions. This
profile is disabled by default.
Perform these steps to configure an 802.11K profile.
1. Select Profiles > SSID > 802.11K in the navigation pane.
2. Select the Add button to create a new 802.11K profile, or click the pencil icon next to an existing profile to
edit. Complete the settings as described in Table 64:
Short Guard Interval in
40 MHz Mode
Yes Enable or disable use of short (400ns) guard interval in 40 MHz mode.
A guard interval is a period of time between transmissions that allows reflections from
the previous data transmission to settle before an AP transmits data again. An AP
identifies any signal content received inside this interval as unwanted inter-symbol
interference, and rejects that data.
The 802.11n standard specifies two guard intervals: 400ns (short) and 800ns (long).
Enabling a short guard interval can decrease network overhead by reducing
unnecessary idle time on each AP. Some outdoor deployments, may, however require a
longer guard interval. If the short guard interval does not allow enough time for
reflections to settle in your mesh deployment, inter-symbol interference values may
increase and degrade throughput.
This parameter is enabled by default.
Legacy Stations Yes Allow or disallow associations from legacy (non-HT) stations. By default, this parameter
is enabled (legacy stations are allowed).
Allow Weak Encryption No Use this setting to define TKIP or WEP encryption for unicast traffic, which forces legacy
transmission rates on high-throughput APs. This option is disabled by default, preventing
clients using TKIP or WEP for unicast traffic from associating with the mesh node.
Requires a version earlier than 6.1.0.0.
Table 64 Profiles > SSID > 802.11K Profile Settings
Field Default Description
General Settings
Folder Top Set the folder with which the profile is associated. The drop-down menu
displays all folders available for association with the profile.
Name Blank Enter the name of the profile.
Table 63 Profiles > SSID > HT SSID Profile Settings (Continued)
Field Default Description