Dell 6.2 - page 457

Parameter Description
microseconds. Allowed values: 0 (No restriction on MDPU start spacing), .25 µsec, .5 µsec,
1µsec, 2 µsec, 4µsec.
Shortguard i ntervali n 20MHz
mode
Enable or disable use ofshort (400ns) guard interval in 20MHz m ode. This parameter is
enabled by default.
Aguard interval is a period of time between transmissions that allows reflections from the
previousdata transmission to settle before an AP transmitsdata again. AnAP i dentifies
anysignal contentreceived inside thisinterval as unw anted inter-symbol interference,
andrej ectsthat data. The 802.11n standardspecifies two guard intervals: 400ns (short)and
800ns(long). Enabling a short guard interval can decrease network overhead by reducing
unnecessaryidle time on each AP. Some outdoor deployments, may, however require a
longer guard interval. Ifthe short guard interval does not allow enough time for reflections
tosettle in your mesh deployment, inter-symbol interference values may increase and
degradethroughput.
Shortguard i ntervali n 40MHz
mode
Enable or disable use ofshort (400ns) guard interval in 40MHz m ode. This parameter is
enabled by default.
Aguard interval is a period of time between transmissions that allows reflections from the
previousdata transmission to settle before an AP transmitsdata again. AnAP i dentifies
anysignal contentreceived inside thisinterval as unw anted inter-symbol interference,
andrej ectsthat data. The 802.11n standardspecifies two guard intervals: 400ns (short)and
800ns(long). Enabling a short guard interval can decrease network overhead by reducing
unnecessaryidle time on each AP. Some outdoor deployments, may, however require a
longer guard interval. Ifthe short guard interval does not allow enough time for reflections
tosettle in your mesh deployment, inter-symbol interference values may increase and
degradethroughput.
SupportedMCS set Ali stof Modulation Codi ng Scheme (MCS) values or ranges ofvalues to be supported on
thisSSID. The MCS youchoose determines the channel wi dth(20MHz vs. 40MHz) and the
number ofspatial streams used by the mesh node.
Thedefault value is 1–23; the complete set of supported values. To specifya small er range
ofvalues, enter a hyphen between the lower and upper values. To specify a series of
differentvalues, separate each value with a comma.
Examples:
2–10
1,3,6,9,12
Range: 0–23.
Assigning a Profile to an AP Group
1. Navigate to the Configuration > Wireless > AP Conf iguration window. Select either the AP Group or AP
Specific tab.
lIf you selected AP Group, click the Edit button by the AP group name to which yo u want to assign a new
high-throughputSSID profile.
lIf you selected AP Specific, click the Edit button by the AP to which y ou want to assign a new high-
throughputSSID profile
2. Underthe Profiles list, expand the Mesh menu, then select Mesh High-throughputSSID profile.
3. In the Profile Details window pane, click the Mesh High-throughput SSID profile drop-down list and select the
desired profilefrom the list.
4. Click Apply.The profile name appears in the Mesh High-throughput SSID Profile list with y ourc onfigured
settings. If you configure this for the AP group,t his profilealso becomes the selected high-throughput SSID
profileused by t he meshpo rtalfor yo urmesh network.
DellPowerConnect W- Series ArubaOS 6.2 | UserGuide SecureEnterprise Mesh | 457