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802.1x and Mac Auth with NPS some ports blocked by AAA

Occasional Contributor

802.1x and Mac Auth with NPS some ports blocked by AAA

Hi,

 

I have 7 5406zl Switches. I used 802.1x and mac auth on the same port.

The problem is that on some ports I get a "blocked by AAA" message in the Log of the Switch.

And then all devices on this port be blocked.

My conf is working on 300 other ports with the same config.

 

Firmware version : K.15.08.0013

 

Here is my conf.

 

on Switch:

 

aaa authentication port-access eap-radius

aaa port-access authenticator A1

aaa port-access authenticator A1 client-limit 3

aaa port-access authenticator active

aaa port-access mac-based A1

aaa port-access mac-based A1 addr-limit 5
aaa port-access mac-based A1 addr-moves
aaa port-access mac-based A1 unauth-vid 26

aaa port-access A1 mixed

 

On the Switch I get

A1   Domain\User         643150-xxxxxx n/a             Authenticated

 

In the NPS I get an "full-access" log entry

 

But in the switch log I get

 

I 01/30/13 13:55:26 00435 ports: port A1 is Blocked by AAA

 

I look in the debug output of the switch

debug security radius &

debug security port-access authenicator

there I get only access messages.

 

So please help me.

 

Thanks

2 REPLIES
Occasional Visitor

Re: 802.1x and Mac Auth with NPS some ports blocked by AAA

HI,

 

I have the same problem

Firmware K.15.09.0012

but I have only MAC-Auth.

 

Does anyone have a solution for this problem?

 

br

Andreas

Highlighted
Occasional Visitor

Re: 802.1x and Mac Auth with NPS some ports blocked by AAA

This may be a silly question, but I'll throw it out there- is the device being connected (that's generating the AAA auth failure) an 802.1X-capable device? If the switch gets EAP packets (signaling 802.1X) it may not try the MAC-auth, even if it's set as an allowed second method.

 

Because that configuration is (technically) off-spec, not detailed in the IEEE 802.1X (pre-2010) standard, each manufacturer and each firmware code, may handle it a little differnet.