Users Guide

212 | Secure Enterprise Mesh Dell PowerConnect ArubaOS 5.0 | [User Guide
Assigning a Profile to an AP Group
1. Navigate to the Configuration > Wireless > AP Configuration window. Select either the AP Group or AP
Specific tab.
 If you selected AP Group, click the Edit button by the AP group name to which you want to assign a new
high-throughput SSID profile.
 If you selected AP Specific, click the Edit button by the AP to which you want to assign a new high-
throughput SSID profile
2. Under the Profiles list, expand the Mesh menu, then select Mesh High-throughput SSID profile.
3. In the Profile Details window pane, click the Mesh High-throughput SSID profile drop-down list and select
the desired profile from the list.
4. Click Apply. The profile name appears in the Mesh High-throughput SSID Profile list with your configured
settings. If you configure this for the AP group, this profile also becomes the selected high-throughput SSID
profile used by the mesh portal for your mesh network.
Editing a Profile
1. Navigate to the Configuration > Wireless > AP Configuration window. Select either the AP Group or AP
Specific tab.
 If you selected the AP Group tab, click the Edit button by the AP group name with the profile you want to
edit.
 If you selected the AP Specific tab, click the Edit button by the AP with the profile you want to edit.
2. In the Profiles list, expand the Mesh menu, then select Mesh High-throughput SSID profile.
Min MPDU start spacing Minimum time between the start of adjacent MPDUs within an aggregate MPDU, in
microseconds. Allowed values: 0 (No restriction on MDPU start spacing), .25 μsec, .5 μsec, 1
μsec, 2 μsec, 4 μsec.
Supported MCS set A list of Modulation Coding Scheme (MCS) values or ranges of values to be supported on this
SSID. The MCS you choose determines the channel width (20MHz vs. 40MHz) and the
number of spatial streams used by the mesh node.
The default value is 1–15; the complete set of supported values. To specify a smaller range of
values, enter a hyphen between the lower and upper values. To specify a series of different
values, separate each value with a comma.
Examples:
2–10
1,3,6,9,12
Range: 0–15.
Legacy stations Allow or disallow associations from legacy (non-HT) stations. By default, this parameter is
enabled (legacy stations are allowed).
40 MHz channel usage Enable or disable the use of 40 MHz channels. This parameter is enabled by default.
Short guard interval in 40 MHz
mode
Enable or disable use of short (400ns) guard interval in 40 MHz mode. This parameter is
enabled by default.
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.
Table 41 Mesh High-Throughput SSID Profile Configuration Parameters (Continued)
Parameter Description