topic Re: Aironet 1252g slow performance in Wireless

Aironet 1252g slow performance

j_Pearcy00 — Sat, 03 Jul 2021 22:50:52 GMT

I have a Cisco Aironet 1252g setup and I have 2 PCs using linksys N adapters connecting to it. Speed is comparable to G. Is there something special I should be doing to improve the speed. I setup the AP within line of site and only about 50 feet away and the speed is still poor.

Re: Aironet 1252g slow performance

Scott Fella — Mon, 12 May 2008 00:30:15 GMT

What is your Linksys speed showing? If it shows 54 Mbps or less, then yes you will have comparable speeds since you are not running 'N'.

You might have to verify that you have 40Mhz channel width and the other necessary configurations.

Re: Aironet 1252g slow performance

j_Pearcy00 — Mon, 12 May 2008 00:40:19 GMT

Yeah its 54 and lower.

Re: Aironet 1252g slow performance

Scott Fella — Mon, 12 May 2008 18:37:36 GMT

Then you have to configure the ap to use the 40mhz channel width and you will be good to go.

Re: Aironet 1252g slow performance

j_Pearcy00 — Wed, 14 May 2008 21:51:55 GMT

ok I have got the speed issue taken care of but I cannot get the AP to run at the N data rates unless its not encrypted. I see these messages from the AP: Interface Dot11Radio0, Mcs rates disabled on vlan 0 due to not using AES encryption or encryption is not disabled . The only way I can see to use AES is to use AES CCMP. Is there a way around this?

Re: Aironet 1252g slow performance

Scott Fella — Wed, 14 May 2008 22:57:02 GMT

WPA is not supported.... Use WPA2 with AES and you will be good to go.

Re: Aironet 1252g slow performance

j_Pearcy00 — Wed, 14 May 2008 23:22:13 GMT

The only options for ciphers are:

wep 128

wep 40

TKIP

CKIP

CMIC

CKIP-CMIC

TKIP+WEP 128

TKIP+WEP 40

AES CCMP

AES CCMP + TKIP

AES CCMP + TKIP + WEP 128

AES CCMP + TKIP + WEP 40

There is no plain old AES

Re: Aironet 1252g slow performance

Scott Fella — Wed, 14 May 2008 23:24:58 GMT

Try AES CCMP.... I guess this is autonomous AP?

Re: Aironet 1252g slow performance

j_Pearcy00 — Thu, 15 May 2008 00:07:31 GMT

this is autonomous ap yes. AES CCMP requires Radius?

Re: Aironet 1252g slow performance

Scott Fella — Thu, 15 May 2008 00:28:17 GMT

Can't find the info on autonomous but you might try this:

ap# configure terminal

ap(config-if)# ssid

ap(config-ssid)# wpa2-psk ascii

ap(config)# interface dot11radio 0

ap(config-ssid)# ssid batman

ap(config-if)# exit

http://www.cisco.com/en/US/docs/wireless/access_point/ios/release/notes/12_4_10b_JA3rn.html#wp291685

Re: Aironet 1252g slow performance

j_Pearcy00 — Thu, 15 May 2008 13:00:47 GMT

Yeah that dosent work. Everything that I read says that AES CCMP requires radius. There is no option for just AES only AES CCMP

Re: Aironet 1252g slow performance

Scott Fella — Thu, 15 May 2008 16:27:17 GMT

I guess the code doesn't yet support WPA2-PSK. I know for sure that it works in an lwapp environment. Weird that you can't configure that. All other options will require a radius server though.

Re: Aironet 1252g slow performance

j_Pearcy00 — Thu, 15 May 2008 17:14:24 GMT

yeah and I tried configuring the AP itself as a radius server. When I try to connect I am never prompted for username and password. I am doing something wrong I just do not know what. I followed the directions below.

http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a008054339e.shtml#ent

Re: Aironet 1252g slow performance

cuevas — Tue, 10 Feb 2009 22:09:05 GMT

I did this as well, and my PCs seem to be better, but the MACs are still having issues. I'm using my 1252G Access Points as LWAPP with a WLC 4402.

Re: Aironet 1252g slow performance

ericgarnel — Wed, 11 Feb 2009 15:09:03 GMT

Have you enabled wwm allowed or required under the wlan QOS tab?

Re: Aironet 1252g slow performance

cuevas — Wed, 11 Feb 2009 17:15:42 GMT

I have the wmm set to allowed on the Data SSIDs, and its set to Required on my SSID for Voice