Aironet, Access Points, Client Adapters and software, Mobile and Outdoor Wireless, Antennas.
benkvi
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Cisco AP 1140 .11n 300 mbps

Fri Aug 26, 2011 2:55 pm

Hi,

It seems my Cisco 1140 AP only runs at 54 mbps.. Anybody know how I can configure to get higher speeds..?

I have both radios turned on, and the client has .11n nic, but i only log traffic on the 2.4GHz band.

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stamour547
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Re: Cisco AP 1140 .11n 300 mbps

Fri Aug 26, 2011 9:57 pm

Is it possible that you client adapter is .11N but only operates on the 2.4ghz freq. range?

1KrazyFool
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Re: Cisco AP 1140 .11n 300 mbps

Sat Aug 27, 2011 8:03 pm

You either have to have an open SSID or configure WPA2/AES to ensure you can connect at .11n speeds. So check those settings.

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ibarrere
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Re: Cisco AP 1140 .11n 300 mbps

Sun Aug 28, 2011 2:29 am

Post the output of show dot11 associations all-client.

benkvi
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Re: Cisco AP 1140 .11n 300 mbps

Mon Aug 29, 2011 12:44 pm

ibarrere wrote:Post the output of show dot11 associations all-client.


kvap#sh dot11 associations all-client
Address : 0016.ce22.208c Name : NONE
IP Address : 10.15.11.236 Interface : Dot11Radio 0
Device : ccx-client Software Version : NONE
CCX Version : 2 Client MFP : Off

State : Assoc Parent : self
SSID : kvap
VLAN : 0
Hops to Infra : 1 Association Id : 2
Clients Associated: 0 Repeaters associated: 0
Tunnel Address : 0.0.0.0
Key Mgmt type : WPAv2 PSK Encryption : TKIP
Current Rate : 54.0 Capability : ShortHdr ShortSlot
Supported Rates : 1.0 2.0 5.5 11.0 6.0 9.0 12.0 18.0 24.0 36.0 48.0 54.0
Voice Rates : disabled Bandwidth : 20 MHz
Signal Strength : -43 dBm Connected for : 11314 seconds
Signal to Noise : 45 dB Activity Timeout : 32 seconds
Power-save : Off Last Activity : 28 seconds ago
Apsd DE AC(s) : NONE

Packets Input : 5475 Packets Output : 2459
Bytes Input : 645693 Bytes Output : 2698942
Duplicates Rcvd : 0 Data Retries : 76
Decrypt Failed : 0 RTS Retries : 0
MIC Failed : 0 MIC Missing : 0
Packets Redirected: 0 Redirect Filtered: 0
Session timeout : 0 seconds
Reauthenticate in : never

Address : 9021.55b5.e6e4 Name : NONE
IP Address : 10.15.11.207 Interface : Dot11Radio 0
Device : unknown Software Version : NONE
CCX Version : NONE Client MFP : Off

State : Assoc Parent : self
SSID : kvap
VLAN : 0
Hops to Infra : 1 Association Id : 1
Clients Associated: 0 Repeaters associated: 0
Tunnel Address : 0.0.0.0
Key Mgmt type : WPAv2 PSK Encryption : TKIP
Current Rate : 48.0 Capability : WMM ShortHdr ShortSlot
Supported Rates : 1.0 2.0 5.5 11.0 6.0 9.0 12.0 18.0 24.0 36.0 48.0 54.0
Voice Rates : disabled Bandwidth : 20 MHz
Signal Strength : -61 dBm Connected for : 375 seconds
Signal to Noise : 30 dB Activity Timeout : 59 seconds
Power-save : Off Last Activity : 1 seconds ago
Apsd DE AC(s) : NONE

Packets Input : 5717 Packets Output : 236
Bytes Input : 155154 Bytes Output : 39974
Duplicates Rcvd : 287 Data Retries : 25
Decrypt Failed : 0 RTS Retries : 0
MIC Failed : 0 MIC Missing : 0
Packets Redirected: 0 Redirect Filtered: 0
Session timeout : 0 seconds
Reauthenticate in : never

Address : e0b9.a501.0158 Name : NONE
IP Address : 10.15.11.213 Interface : Dot11Radio 0
Device : unknown Software Version : NONE
CCX Version : NONE Client MFP : Off

State : Assoc Parent : self
SSID : kvap
VLAN : 0
Hops to Infra : 1 Association Id : 3
Clients Associated: 0 Repeaters associated: 0
Tunnel Address : 0.0.0.0
Key Mgmt type : WPAv2 PSK Encryption : TKIP
Current Rate : 54.0 Capability : WMM ShortHdr ShortSlot
Supported Rates : 1.0 2.0 5.5 11.0 6.0 9.0 12.0 18.0 24.0 36.0 48.0 54.0
Voice Rates : disabled Bandwidth : 20 MHz
Signal Strength : -50 dBm Connected for : 14133 seconds
Signal to Noise : 30 dB Activity Timeout : 60 seconds
Power-save : Off Last Activity : 0 seconds ago
Apsd DE AC(s) : NONE

Packets Input : 11083027 Packets Output : 11138071
Bytes Input : 832299053 Bytes Output : 44470490
Duplicates Rcvd : 0 Data Retries : 894154
Decrypt Failed : 0 RTS Retries : 0
MIC Failed : 0 MIC Missing : 0
Packets Redirected: 0 Redirect Filtered: 0
Session timeout : 0 seconds
Reauthenticate in : never

kvap#

benkvi
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Re: Cisco AP 1140 .11n 300 mbps

Mon Aug 29, 2011 12:56 pm

@1KrazyFool

Ok, so encrypt method makes a difference. How can I set AES..?

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Re: Cisco AP 1140 .11n 300 mbps

Wed Sep 07, 2011 9:11 pm

int dot11radio 0
encryption mode ciphers aes-ccm

Assuming your key is compatible, you shoukd be able to connect above 54Mbs

WarrenSullivan
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Re: Cisco AP 1140 .11n 300 mbps

Thu Sep 08, 2011 11:56 pm

Did this work?

Regards

Warren

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Re: Cisco AP 1140 .11n 300 mbps

Wed Sep 28, 2011 9:33 am

Hi,

1140 do have two radio,
one is int dot11radio0
another one is int dot11radio1

put the same configuration for your interface dot11radio1, as dot11radio1 is for 5ghz, that is N

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ibarrere
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Re: Cisco AP 1140 .11n 300 mbps

Sun Oct 09, 2011 5:58 am

n3wbi3s wrote:1140 do have two radio,
one is int dot11radio0
another one is int dot11radio1


Not always. The 1140 can have two radios, but that's only the 1142 model. 1141s only have a single 2.4GHz radio.

OP: I know this is an old thread, but it's worth mentioning that the 300Mbps throughput mentioned in docs and stuff is really only possible with 40MHz channels, which you probably don't have configured. 40MHz channels aren't compatible with legacy equipment, so the only way you can use them is if all your clients are 802.11n. However, even without 40MHz channels, you should theoretically be able to achieve 144Mbps (M15 with a 400ns GI), but it looks like that's not being negotiated properly from your client. Post a config of the access point if you can.

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Re: Cisco AP 1140 .11n 300 mbps

Sun Oct 09, 2011 8:10 am

Pet hate number 1, UNresolved threads!

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dieselboy
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Re: Cisco AP 1140 .11n 300 mbps

Fri Nov 18, 2011 10:49 am

Well I just wanted to say I found this thread useful.
Meanwhile, back in the city...

markysharkey
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Re: Cisco AP 1140 .11n 300 mbps

Thu Jun 21, 2012 10:43 am

I'd like to resurrect this if I may to see if we can arrive at a solution as I have a similar issue with 802.11N on 1142 autonomous AP's. It goes like this:-
I am running several autonomous 1142 AP's. No LAN Controller (I know, I know...) and I'd like to improve throughput by using 802.11N.
In the lab, I have already tried adding the identical config from Radio0 to Radio1 as suggested above, but this caused both Radio interfaces to reset and stay admin down as well as causing BVI1 to go to admin down. I tried to shut / no shut the interfaces but to no avail. Returning the AP to it's original state allowed me to contact the AP in all the usual ways but only using 802.11B/G. Any ideas?

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Re: Cisco AP 1140 .11n 300 mbps

Thu Jun 21, 2012 10:25 pm

Post the following output:

sh run ssid <ssid_name>
sh run int dot0
sh run int dot111

markysharkey
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Re: Cisco AP 1140 .11n 300 mbps

Fri Jun 22, 2012 9:06 am

Cracked it.
It was exactly as posted above by n3wbi3s. Copy the dot11rado0 config to the dot11rad1 interface, including all sub-ifs. Then swap the encrption from TKIP to aes-ccm. Tell the users the encryption used is WPA2-Personal and for me at least, it's all good. I can connect, ping, telnet etc. Noow to move it from the lab to site :0
Attachments
80211n connection.jpg
80211n connection.jpg (511.41 KiB) Viewed 3286 times

killabee
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Re: Cisco AP 1140 .11n 300 mbps

Sat Jun 23, 2012 4:25 am

Cool. When I ran into this, it was quite surprising to me that you have to use WPA2 to enable N.

markysharkey
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Re: Cisco AP 1140 .11n 300 mbps

Mon Jun 25, 2012 3:04 am

Especially when the CLI lists it as WPA with no actual WPA2 config option, rather they use the difference between TKIP and AES-CCM for reasons that escape me. Maybe someone else can shed some light?
Personally, I accept that there will be something that doesn't seem to make sense and resign myself to trawling the various boards for hours to find the answer :0

LS21
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Re: Cisco AP 1140 .11n 300 mbps

Fri Jun 29, 2012 6:18 am

markysharkey wrote:Especially when the CLI lists it as WPA with no actual WPA2 config option, rather they use the difference between TKIP and AES-CCM for reasons that escape me. Maybe someone else can shed some light?
Personally, I accept that there will be something that doesn't seem to make sense and resign myself to trawling the various boards for hours to find the answer :0


I dont understand?

This is the command you use to tell it WPA2:

authentication key-management wpa version 2

'

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