About Web Authentication with Automatic MAC Check issues

Unanswered Question
Oct 8th, 2008
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I try to set the ACS4.2 to be able to use Web Authentication with Automatic MAC Check feature on 2960,I set user account and password(PC MAC Address)in ACS internal Dataase,but it doesn't work.

I view ACS log,it appears the ACS password invalid message,then I tried to modify password format is as follows, but did not succeed.Please help me solve this problem,thank you!


ACS password example:

1. 0011.2233.aabb

2. 00112233aabb

3. 0011.2233.AABB

4. 00112233AABB

5. 00-11-22-33-aa-bb

6. 00-11-22-33-AA-BB


LAB equipment:

1. 2960-24TT-L Switch with IOS 12.2(46SE)

2. ACS 4.2 Trail version for windoows 2003




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jafrazie Thu, 10/09/2008 - 12:13
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  • Cisco Employee,

Would recommend using web-authentication as a fallback method to 802.1X.


See here:

http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_46_se/configuration/guide/sw8021x.html#wp1274792


There's no MAC-check at all in this case, and if you want to check MAC-addresses, then you can enabled MAC-Auth separately as well.


Hope this helps,



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