Force 802.11a?

Hi all,
I have a MacBook Pro that claims to support 802.11a. I'm on a college campus with 802.11b/a/g WAP's in most classrooms. The problem is, everyone uses 802.11g, so that frequency range tends to be relatively saturated with activity, and so is fairly slow. Is there a way to force this Mac to connect via 802.11a, to take advantage of the lighter crowding and much faster speeds?
Thanks,
Adam

Sounds plausible... Don't suppose you know how to alter a Preferred Network setup to use 802.11a, instead of 802.11g?
I can't find any UI setting that allows for this. Here's the relevant section of com.apple.airport.preferences.plist:
<dict>
<key>SCAN_CHANNELS</key>
<array>
<integer>6</integer>
<integer>64</integer>
<integer>52</integer>
<integer>60</integer>
<integer>56</integer>
<integer>1</integer>
<integer>11</integer>
</array>
<key>SSID</key>
<data>
TUlU
</data>
<key>SecurityType</key>
<string>None</string>
<key>WEPKeyLen</key>
<integer>1</integer>
<key>_timeStamp</key>
<date>2007-01-08T18:46:44Z</date>
<key>authMode</key>
<integer>3</integer>
<key>capability</key>
<integer>0</integer>
<key>channel</key>
<integer>6</integer>
<key>cipherMode</key>
<integer>0</integer>
<key>isIBSS</key>
<integer>0</integer>
<key>isWPA</key>
<integer>0</integer>
<key>multiCipher</key>
<integer>0</integer>
<key>name</key>
<string>[My Network Name]</string>
</dict>

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Force MacBook Air 10.5.8 to connect to 802.11a

Hi,
Is there a way to force my MBA to connect to an 802.11a AP?
I am troubleshooting an MBA wireless connection problem. As such I would like to try & force it to connect via an 802.11a AP, since 802.11a is less susceptible to interference. While troubleshooting I have located & begun using “Airport Radar” and “AirGrab WiFi Radar”, which provide more useful information than the Airport icon.
Yesterday, my MBA connected to an AP which was about 100 feet away. And it connected to it via 802.11b/g. The connection was poor, in that it would periodically drop the connection. I turned off Airport & turned it back on. Then it connected to an AP located by myself, which was about 15 feet away. And, it connected via 802.11a. This stayed connected without problems for at least two hours. I verified this via my Cisco WCS "AP Association History".
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Thank you for the reply.
I do not want to change the configuration of my Cisco Access Point to exclusively use 802.11.a. I have a mixed environment of Windows & MAC client laptops. I have a few MBA's that seem to have a problem with wireless connection. They have reported weak signal, slow response, etc. I've set up an MBA at my desk, & monitored its connection. I have monitored it using "Airport Radar" and "AirGrab WiFi Radar" on the MBA. And, I have monitored my MBA connection from the standpoint of my Cisco wireless network using Cisco's Wireless LAN Controller (WLC) and Cisco's Wireless Control System "WCS". It was from the perspective of my WCS that I discovered my MBA had connected via 2.4GHZ to an AP that is 100 feet from my desk. I turned off my Airport & cycled it back on. It then connected to an AP that is 15 feet from my desk at 5.0GHZ. This connection stayed up for at least two hours without any problem. I know that 2.4Ghz is more susceptible to interference than 5.0Ghz. So, I would like to try & force my MBA to connect at 5.0Ghz & perhaps to the specific AP located closest to my desk.
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Unstable Wireless Bridge Connection via 802.11a(Radio 1) of Aironet 1242

Hi,
I'm going to setup up an AP 1242 in a remote area to support b/g client via a 802.11a bridge link (all using AP 1242).
Before the deployment, I tested the configuration in a lab environment. However, I found the bridge link will come up a while and suddenly gone. Resetting the root AP or the non-root AP cannot bring the connection up again. Sometimes, when I shutdown the b/g radio (radio 0) of the remote AP, the bridge link will be established again. Following is the log from the root AP.
Thanks!
*Apr 4 12:24:05.013: %LINK-5-CHANGED: Interface Dot11Radio0, changed state to r
eset
*Apr 4 12:24:05.054: %LINK-3-UPDOWN: Interface Dot11Radio1, changed state to up
*Apr 4 12:24:05.665: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthern
et0, changed state to down
*Apr 4 12:24:06.009: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio
1, changed state to up
*Apr 4 12:24:06.013: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio
0, changed state to down
*Apr 4 12:24:07.054: %LINK-3-UPDOWN: Interface BVI1, changed state to down
*Apr 4 12:24:16.091: %DOT11-4-CANT_ASSOC: Interface Dot11Radio0, cannot associa
te: No Response
*Apr 4 12:24:16.811: %LINK-3-UPDOWN: Interface BVI1, changed state to up
*Apr 4 12:24:17.811: %LINEPROTO-5-UPDOWN: Line protocol on Interface BVI1, chan
ged state to upInternal error: command failed                                                             <<<< Internal error: command failed ??????
                                                                                                                               <<<<don't know the meaning of this message
*Apr 4 12:27:22.206: %LINK-5-CHANGED: Interface Dot11Radio1, changed state to r
eset
*Apr 4 12:27:22.233: %LINK-3-UPDOWN: Interface Dot11Radio1, changed state to up
*Apr 4 12:27:22.233: dot11_mgmt: bad cookie returned from driver for mac 003a.9         <<<<<003a.928.dad0 is radio 1 / non root bridge of remote AP
928.dad0(expected 0x00000000, got 0x010ADAB0) - force driver to delete client             <<<<<don't know the meaning of this message
*Apr 4 12:27:22.235: %LINK-5-CHANGED: Interface Dot11Radio1, changed state to r
eset
*Apr 4 12:27:22.262: %LINK-3-UPDOWN: Interface Dot11Radio1, changed state to up
*Apr 4 12:27:23.513: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthern
et0, changed state to up
*Apr 4 12:27:26.993: %DOT11-6-ASSOC: Interface Dot11Radio1, Station T9_QC168_Ca
ntil 003a.9928.dad0 Reassociated KEY_MGMT[NONE]
*Apr 4 12:27:28.465: %DOT11-4-MAXRETRIES: Packet to client 003a.9928.dad0 reach
ed max retries, removing the client
*Apr 4 12:27:28.465: %DOT11-6-DISASSOC: Interface Dot11Radio1, Deauthenticating
Station 003a.9928.dad0 Reason: Previous authentication no longer valid
*Apr 4 12:27:28.467: %DOT11-4-MAXRETRIES: Packet to client 003a.9928.dad0 reach
ed max retries, removing the client
*Apr 4 12:27:31.673: %DOT11-6-ASSOC: Interface Dot11Radio1, Station T9_QC168_Ca
ntil 003a.9928.dad0 Reassociated KEY_MGMT[NONE]
*Apr 4 12:27:32.687: %DOT11-6-ADD: Interface Dot11Radio1, Station 003a.9926.e76
0 Associated to Parent 003a.9928.dad0
*Apr 4 12:28:46.178: %DOT11-6-DISASSOC: Interface Dot11Radio1, Deauthenticating
Station 003a.9928.dad0 Reason: Sending station has left the BSS
*Apr 4 12:28:46.179: %DOT11-6-DISASSOC: Interface Dot11Radio1, Deauthenticating
Station 003a.9926.e760
*Apr 4 12:28:46.181: %DOT11-6-ASSOC: Interface Dot11Radio1, Station T9_QC168_Ca
ntil 003a.9928.dad0 Reassociated KEY_MGMT[NONE]
*Apr 4 12:28:47.196: %DOT11-6-ADD: Interface Dot11Radio1, Station 003a.9926.e76
0 Associated to Parent 003a.9928.dad0
*Apr 4 12:29:15.132: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthern
et0, changed state to down
*Apr 4 12:29:32.442: %DOT11-4-MAXRETRIES: Packet to client 003a.9928.dad0 reach
ed max retries, removing the client
*Apr 4 12:29:32.442: %DOT11-6-DISASSOC: Interface Dot11Radio1, Deauthenticating
Station 003a.9928.dad0 Reason: Previous authentication no longer valid
*Apr 4 12:29:32.443: %DOT11-6-DISASSOC: Interface Dot11Radio1, Deauthenticating
Station 003a.9926.e760
*Apr 4 12:29:32.444: %DOT11-4-MAXRETRIES: Packet to client 003a.9928.dad0 reach
ed max retries, removing the client
*Apr 4 12:31:10.285: %DOT11-4-CANT_ASSOC: Interface Dot11Radio0, cannot associa
te: Rcvd response from 003a.9928.2660 channel 6 2560
*Apr 4 12:31:18.286: %DOT11-4-CANT_ASSOC: Interface Dot11Radio0, cannot associa
te: AssociatingInternal error: command failed
*Apr 4 12:31:27.021: dot11_mgmt: bad cookie returned from driver for mac 003a.9
928.2660(expected 0x00000000, got 0x010ADAB0) - force driver to delete client
*Apr 4 12:31:29.107: %DOT11-4-UPLINK_ESTABLISHED: Interface Dot11Radio0, Associ
ated To AP T9_SML_LT2_AP2 003a.9928.2660 [None]
*Apr 4 12:31:29.108: %LINK-3-UPDOWN: Interface Dot11Radio0, changed state to up
*Apr 4 12:31:30.108: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio
0, changed state to up

Thanks dmantill for reminding me to revisit the antenna and related stuff.
As the setup is in a lab environment, the APs are put on a work bench next to each other, therefore, the radio output power was lowered.
After adjusting the output powers, it works as expected.
Thanks Surendra and dmantill.

Connecting to 802.11a AP using WPA security - no go

I have an AP that is set to 802.11a (5GHz) using WPA security and is set to hide its SSID. My iMac is connecting to this AP without any problems whatever frequency i set on AP, hide/show SSID. The problem is - Macbook does not show this AP in AP list when requested, if i select other and enter correct settings (ssid and WPA passkey) it says - connection timed out, AP does not show any signs that something even tried to connect to AP.
the only resort is to use 802.11g when i can connect to AP without any problems.
in Network utilities it shoes that it supports 802.11a/b/g/n
hope i gave enough details.
later today i will try to set WPA2 instead of WPA, also will try to set no security settings at all.
any thoughts how to force it to connect to 5GHz AP?
edit:
forgot to say why i want to switch to 5GHz - the problem is - lately many 2.4GHz b/g APs popped up in neighborhood and started to cause latency/interference as some manage to follow me over frequencies i set up.
Message was edited by: janiskr

ok, setting to WPA2 solved the issue, because still, with WPA configuration i was not able to connect. allowing TKIP and WPA2 allowed macbook to connect. Also iMac changed the settings to WPA2 and it didn't matter that it had correct settings fot WPA.
weird.
maybe someone could point out how to set these things explicitly, so i can choose what settings are in use.

Prefer 802.11a over 802.11g

Hello,
Is there a way in an autonomous AP to set 802.11a/5ghz as the prefered connection frequency if the client is 802.11a capable? We have a number of notebooks that have draft N cards and we have AP's with A and G radios and I wanted to force the A capable clients to connect via A instead of G.
Thanks,
Dan.

Unrelated to the band-select CLI command, I am using a GPO with 2 x SSIDs - SSID2.4 & SSID5. The SSID5 has higher priority and from my limited testing, N clients seem to connect to to the SSID5 and obviously G clients only see SSID2.4 and connect to that. It seems to be working so far.
Obviously you need to be running the WZC supplicant for this to work.
Modifying the driver band-select option isn't a great option as not all clients support it and it is not scalable in any enterprise deployment. Scripting those drivers modifications would probably be a nightmare. I guess it may work in a small environment.
We'll see how well the band-select CLI option works.

17" mbp no longer sees a 802.11a Linksys router...

I have one of the early 17" MBP. It used to work with a old 802.11a (Linksys) router. Lately it doesn't see the router at all. I've reset the router and another Windows machine can see it fine. I didn't do anything funny other than apply patches and firmware upgrades. Any help is appreciated.
Thanks
Macbook Pro 17" Mac OS X (10.4.7)

Maybe its helpful you to know that the 802.11a standard wasn't totally supported by Apple at the begining (read http://www.appleinsider.com/article.php?id=1465) so probably those patches did change something.
Have you tried different frequencies on the router?
Chris

Cisco Systems vs "CSIRO" 802.11a and 802.11g infringed upon the '069 patent

Hi,
any news about Cisco Systems and the "CSIRO" 802.11a and 802.11g infringed upon the '069 patent ?
http://www.buffalotech.com/products/wireless/
Dear Customer
As you may be aware, Commonwealth Scientific and Industrial Research Organisation ("CSIRO") sued Buffalo, Inc. and Buffalo Technology (USA), Inc. ("Buffalo"), for alleged infringement of United States Patent No. 5,487,069 ("the '069 patent"). Subsequently, CSIRO also asserted its patent against the entire wireless LAN industry, including, Microsoft, Intel, Accton, SMC and Netgear.
In it's lawsuit against Buffalo, CSIRO claimed certain Buffalo wireless networking products compliant with IEEE standards 802.11a and 802.11g infringed upon the '069 patent. Buffalo believed at that time and continues to believe that there are no grounds for CSIRO's allegations of infringement. The United States district court, however, found Buffalo to infringe the '069 patent and enjoined the importation and sale of Buffalo's IEEE 802.11a and 802.11g compliant products.
CSIRO's lawsuits are against the entire wireless LAN industry and could affect the supply of wireless LAN products by any manufacturer, not just Buffalo. The entire industry is resisting CSIRO's attempts to enjoin the sale of wireless LAN products. Recently, Microsoft, 3COM Corporation, SMC Networks, Accton Technology Corporation, Intel, Atheros Communications, Belkin International, Dell, Hewlett-Packard, Nortel Networks, Nvidia Corporation, Oracle Corporation, SAP AG, Yahoo, Nokia, and the Consumer Electronics Association filed briefs in support of Buffalo's position that injunctive relief is inappropriate in this case.
During the period of time that the injunction is in effect (10/1/2007), Buffalo cannot offer for sale, sell, import, or use its IEEE 802.11a and 802.11g compliant products in the United States. A list of the products covered by the injunction is attached here . The injunction does not prohibit sales of pre-existing inventories of products by Buffalo's customers. In addition, Buffalo has secured CSIRO's agreement to permit the replacement of defective products under warranty. None of Buffalo's other products are currently affected by this injunction.
While Buffalo believes that it will be successful in reversing the district court's decision and will obtain a stay of the injunction pending a decision on the merits, the Court of Appeals has not yet issued a decision. Should the Court of Appeals issue a decision staying the injunction, you will be promptly notified. After the stay is issued or a favorable decision on the merits is obtained, Buffalo will be able to resume the supply of IEEE 802.11a and 802.11g products
Please rest assured that Buffalo continues to stand behind their products and will continue to support all of our loyal customers as it relates to product warranties, technical support and the like without interruption.

I suspect after reading the patent and the litigation that you mentioned above, that the US District Court decision will be reversed as the patent appears to be very vague in its contsruction and verbage. Furthermore, the intent to hold the IEEE hostage on the ratification of 802.11n will not bode well in the court's eyes. If in fact the case is reversed, I believe that the members of CSIRO will be in danger of lost profits litigation from Buffalo. Stay tuned to this bat channel.

What's the difference between using and 802.11a and 5GHz only?

What's the difference between using "802.11n (802.11a compatible)" and "802.11n only (5GHz)" modes on the Airport Extreme?

802.11a gives you 802.11g speeds but using 5GHz (54mbps
802.11n gives you 144Mbps (600 peak) at 2.4GHz or 5GHz

Does the 27" iMac wireless card support 802.11a and n

does the iMac support the 5 GHz wifi format? How about the N spec?

I'm sorry but I don't understand this:
the unit supports 802.11a channels but it doesn't pick up anything.
Are you saying the iMac cannot connect wirelessly? And why would you be concerned that the very old 'a' standard may not be picked up? The latest standard is 802.11n, not a.
http://en.wikipedia.org/wiki/IEEE_802.11
So, is the iMac working wirelessly or not?

Does photosmart d110a have 802.11a? If not, does it have 802.11n?

Had it connected via b/g WiFi but it doesnt seem to connect with my new router even though ive checked all settings. The manual and cd are useless, and hp site's specs for this photosmart are useless. Appreciate your help if you can find out if it's 802.11a or n compatible.

Hi,
Did you ask this question yesterday ? Your printer is NOT networkable without buying more hardware:
The following table lists connectivity options.
Series                                                               USBWireless    NetworkWired Network (Ethernet)
HP Photosmart e-All-in-One D110a Printer
Yes
       No
     No
HP Photosmart e-All-in-One D110b Printer
Yes
            No
             No
In short, it does NOT have wired and wireless adapter.
Regards.
BH
**Click the KUDOS thumb up on the left to say 'Thanks'**
Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

WLAN showing up as 802.11a/g but not 11n

Using a wifi scanner like Metageek inssider or chanalyser, I'm seeing one of our WLANs as only 802.11a or g but not 802.11n like it should be.
All the other SSIDs on that AP/controller are showing as 802.11n. I can't for the life of me think how this could be, but the scanner is showing the top data rate as 54Mbps. Connect to another SSID and it shows the upper data rates as well.
Any ideas why this would be? Typically this just happens to be our main SSID. Is it just the scanner interpreting things wrong? I've looked at the controller and the upper data rates are enabled for 802.11n as well as 40MHz for the 5GHz radio.

It's WPA2/AES but WMM is not allowed (Cisco TAC had me remove that option to resolve a bug).

WiSM2 WLC 7.2 Maximum Allowed Clients under Global Parameters 802.11a/n b/g/n

Hello everyone,
Just loaded the 7.2.103.0 software onto the brand new WiSM2. Going throught the options and have found that under the global parameters for 802.11a/n, 802.11b/g/n radios is now the "Maximum Allowed Clients" option. The allowed setting is from 1 - 200 clients.
Does that mean only 200 clients will be allowed to associate to the WLC on that radio at a maximum?
Doesn't seems to make sense... I have the 500 AP license on this WiSM2... I know this option used to be an optional setting under a WLAN in previous releases.
Any ideas?
Regards,
Sasha.

Does that mean only 200 clients will be allowed to associate to the WLC on that radio at a maximum?
As what Scott has responded, this means 200 clients per WAP.
If you do exceed 200 clients per WAP (or whatever value you put in there) the clients will just get a nag and the system will let you in eventually.

802.11a/g/n optimizing for compatibility

How to ensure maximum client compatibility and stability in 802.11a/b/g/n networks?
I am running a Wireless network based on the WLC 5508 6 SW version, (with WCS mgmt) and 1142 APs. I would like a broad variety of clients, old G clients and new N clients to experience a stable connection to the network. I see Apple Macbooks, Lenovo-, Dell- and HP laptops in addition to HTC smartphones and iPhones on this network.
I am having issues with some types of clients experiencing "unstable" connections. They are able to get a link for a variable ammount of time, then suddenly loose connection for a short period of time before reconnecting. These clients mostly use a third party SSL-VPN link over my wireless, therefore the loss of connection can be quite annoying. From time to time some of these clients seem to be flapping between access points but not seamless like roaming should be, rather with a short stop in connectivity before reconnecting.
Previously we had a 802.11g Aruba wireless network in the same location. It had no such difficulties. This points me toward the config parametres in the controller.
Which 802.11 b/g/n and WLAN parameters can affect this? I am looking for a document describing a best practice for setting up these parameters, or if someone here has input to a successful stable setup as the configuration guide only says e.g. "Enable if you want Aironet Information Elements" does not help in deciding if I want this
My WLAN is set up with WPA2/AES PSK
and a guest network with web auth
Examples of parameters:
which Radio policy (bgn or gn)
Aironet IE?
MFP (disabled or enabled)
QoS profile?
can CCX location measurement affect performance?
Which Data rates should be set mandatory/enabled/disabled?
MCS (data rate) settings for 802.11n
anything I have forgotten?
The goal is:
A simple, no hassle network providing maximum compatibility with different clients with a plus of 802.11n speeds for compatible clients
wbr
-LA

Hey! I implemented your suggested improvements and the first impression is good!
on 802.11a and b/g I disabled lower datarates, set 12Mbps to mandatory and the higher ones to supported. The instant improvement was the RTT measurements I made (previously they averaged at about 13ms (to an internet site) after the change they dropped to about 3-4 ms on average! I would say this is a very significant improvement!
I have not been able to get any feedback from the user community yet :), but it sounds promising...
I am still looking for some more insight into these issues, so if someone still has some ideas, please let us know!
-LA

AP1042 802.11a/n/ac Radios down in the controller

802.11b/g/n Radios is up but 8021.11a/n/ac radio is down.   802.11a netowrk status is already enabled. Not too sure what may most likely be causing it to down?
Below is the output of "show sysinfo" from the controller and "show version" from the AP
Any input is appreciated.
Thanks Cathy
Manufacturer's Name.............................. Cisco Systems Inc.
Product Name..................................... Cisco Controller
Product Version.................................. 8.0.100.0
RTOS Version..................................... 8.0.100.0
Bootloader Version............................... 8.0.100.0
Emergency Image Version.......................... 8.0.100.0
Build Type....................................... DATA + WPS
System Name...................................... wlc01
System Location..................................
System Contact...................................
System ObjectID.................................. 1.3.6.1.4.1.9.1.1631
IP Address....................................... 172.20.0.102
IPv6 Address..................................... ::
System Up Time................................... 3 days 1 hrs 57 mins 9 secs
System Timezone Location......................... (GMT+10:00) Sydney, Melbourne, Canberra
System Stats Realtime Interval................... 5
System Stats Normal Interval..................... 180
Configured Country............................... AU - Australia
--More-- or (q)uit
State of 802.11b Network......................... Enabled
State of 802.11a Network......................... Enabled
Number of WLANs.................................. 2
Number of Active Clients......................... 1
Burned-in MAC Address............................ 00:0C:29:ED:49:8A
Maximum number of APs supported.................. 200
System Nas-Id.................................... Cisco_ed:49:8a
TestAP#show ver
Cisco IOS Software, C1040 Software (C1140-K9W8-M), Version 15.3(3)JA, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2014 by Cisco Systems, Inc.
Compiled Fri 15-Aug-14 13:14 by prod_rel_team
ROM: Bootstrap program is C1040 boot loader
BOOTLDR: C1040 Boot Loader (C1140-BOOT-M) Version 12.4(23c)JA6, RELEASE SOFTWARE (fc1)
TestAP uptime is 40 minutes
System returned to ROM by power-on
System image file is "flash:/c1140-k9w8-mx.153-3.JA/c1140-k9w8-xx.153-3.JA"
Last reload reason:
cisco AIR-LAP1042N-A-K9 (PowerPC405ex) processor (revision A0) with 98294K/32768K bytes of memory.
Processor board ID FGL1707S3P4
PowerPC405ex CPU at 333Mhz, revision number 0x147E
Last reset from power-on
LWAPP image version 8.0.100.0
1 Gigabit Ethernet interface
2 802.11 Radios
32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 00:06:F6:3B:A9:F7
Part Number                          : 73-14034-06
PCA Assembly Number                  : 800-34273-07
PCA Revision Number                  : A0
PCB Serial Number                    : FOC17015X6X
Top Assembly Part Number             : 800-34285-05
Top Assembly Serial Number           : FGL1707S3P4
Top Revision Number                  : A0
Product/Model Number                 : AIR-AP1042N-A-K9

Configured Country............................... AU - Australia
WLC is configured for Australia (-N for AP1042).
Product/Model Number : AIR-AP1042N-A-K9
AP Regulatory Domain is for USA (-A).
This is the reason why your AP's 802.11a radio is permanently disabled. Unfortunately, the Wireless LAN Compliance Status (06 October 2014) doesn't list old-model APs. And this doesn't help anyone.
You may need to contact your vendor and ask them politely if it's possible for you to replace your AP with the ones with the correct Regulatory Domain.

802.11b vs 802.11a & g

Hi there, any one can give me some idea on the best practise about the choosing the WLAN 802.11 protocols.
I know that the in WLAN network, all device shares the same access point in half duplex, so using 11g, it would give us 45mbps to share than 11mbps (11b). therefore, I would think it is good practitice to turn off 11b on all APs, but is there any disavantage by doing so?
also on the cisco Wireless Lan Controlller web interfarce, Wireless --> 802.11a/n --> network, how to setup the DATA RATES. by default the 1 to 5.5 mbps has been disalbed. 6 to 9 mbps are mandatory, then 12 to 54 mbps supported what is the difference and impact by changing those premeter.
thanks. roy

I would think it is good practitice to turn off 11b on all APs, but is there any disavantage by doing so?
You should know what your clients before you embark in this activities. There are still some clients, such as old laptops or USB adaptors to medical equipments to brand new hand-held bar code scanners, that will read nothing but 802.11b and on 1, 2 or 5.5 Mbps data rates.
The reason why these clients are still prevalent is because of the cost to purchase these wireless cards from storage houses.

Force 802.11a?

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