WPA2-PSK AES on 1231G

Unanswered Question
Apr 14th, 2010
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I was hoping to get some assistance on getting the 1231g to work with WPA2-PSK (AES).  My laptops cannot authenticate using this config but connect fine to the 1242AG.  Below are some of the specifics:


Radio Type: AIR-MP31G

IOS Ver: 12.3(8) JED

Multiple SSID

Encryption: AES

Key Management: Mandatory WPA

*Laptops can connect to SSID with WEP

Any help would be greatly appreciated.

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Surendra BG Tue, 05/11/2010 - 07:05
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I am sorry to say this, but in order to do AES with the AP you are using, you MUST have
either an AIR-RM21A or AIR-RM22A...this ap does not have either one of these radios. 

...the following excerpt is from the 12.3(2)JA release notes:


This feature supports Advanced Encryption Standard-Counter Mode with Cipher Block Chaining
Message Authentication Code Protocol (AES-CCMP). AES-CCMP is required for Wi-Fi Protected
Access 2 (WPA2) and IEEE 802.11i wireless LAN security. This feature is not supported on
350 series access points.

This feature is supported on these devices:

•1100 series access points (802.11g radio only)

•1130AG series access points

•1200 series access points (IEEE 802.11g and 802.11a radios only with the part numbers

•1230AG series access points (IEEE 802.11g and 802.11a radios only with the part numbers


Surendra BG Tue, 05/11/2010 - 07:17
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Rating the resolution is really appreciated.

Version dependent perhaps? This museum piece supports it

System image file is "flash:/c1200-k9w7-mx.123-8.JEE/c1200-k9w7-mx.123-8.JEE"

cisco AIR-AP1220-IOS-UPGRD (PowerPC405GP) processor with 15138K/1236K bytes of memory.

Product/Model Number                 : AIR-AP1220-IOS-UPGRD

Radio AIR-MP31G, Base Address 0013.c40x.xxxx, BBlock version 0.00, Software version 6.11.8

#encryption mode ciphers ?

  aes-ccm    WPA AES CCMP

  ckip       Cisco Per packet key hashing

  ckip-cmic  Cisco Per packet key hashing and MIC (MMH)

  cmic       Cisco MIC (MMH)

  tkip       WPA Temporal Key encryption

  wep128     128 bit key

  wep40      40 bit key


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