User guide

Radio and Antenna Configuration
Enterasys Wireless Standalone 802.11n AP User Guide 4-27
3. Changethe11bSettings:
• (Optional)ChangethePr
eamble.
4. Changeth
e11gSettings:
• (Optional)ChangethePr
otectionMode,ProtectionRate,and/orProtectiontype.
Note: The overall throughput is reduced when Protection Mode is enabled, due to the additional
overhead caused by the RTS/CTS. The overhead is minimized by setting Protection Type to CTS-
to-Self and Protection Rate to 11 Mbps. The overhead causes the overall throughput to be
sometimes lower than if just 11b mode is used. If there are many 11b clients, it is recommended to
disable 11g support (11g clients are backward compatible with 11b APs).
An alternate approach, although potentially a more expensive method, is to dedicate all APs on a
channel for 11b (for example, disable 11g on these APs) and disable 11b on all other APs. The
difficulty with this method is that the number of APs must be increased to ensure coverage
separately for 11b and 11g clients.
5. Changethe11nSettings:
• (Optional)ChangethePr
otectionMode.
• (Optional)IfAut
oor40MHzisselectedastheChannelWidth,configurethe40MHz
settings:
(1) Changeth
e40MHzProtectionMode.The40MHzChannelOffsetand40MHz
ChannelBusyThresholdfieldsdisplay.
(2) Changeth
e40MhzChannelOffsetand40MHzProtectionChannelOffset.
• (Optional)ConfigureAg
gregateMSDUs:
(1) SelecttheEnableA
ggregateMSDUscheckbox.TheAggregateMSDUMaxLength
fielddisplays.
(2) Changeth
eAggregateMSDUMaxLength.
• (Optional)ConfigureAg
gregateMPDUs:
(1) SelecttheEnableA
ggregateMPDUscheckbox.TheAg gregateMPDUMaxLength
andAggregateMPDUMaxPacketsfieldsdisplay.
(2) Changeth
eAggregateMPDUMaxLengthandtheAggregateMPDUMaxPackets.
• (Optional)SelecttheEnableADDBASup
portcheckbox.
6. ClickClosetoclosetheadv
ancedsettingsdialog.ClickSaveontheselectedradiotabtosave
yourchanges.
Note: Changes to the advanced radio configuration are not saved until you close the Advanced
dialog and click Save on the selected radio configuration tab.