Port based authentication randomly stops working

[rogierg]

Hi all,

We have big problems with 2 swithces that have been set up for mixed (mac-based and 802.x) authentication. PC's suddenly refuse to work on one port and the only way we have found that solves this is to plug it in a different port on the same switch. These ports do not have different configurations so it is a really odd problem.

1 PC stays on identifying. (PC does not even get an unauth IP adress.)

PC was connected to D16 log showed this: (Reverse logging)

I 01/16/14 09:24:23 00435 ports: port D16 is Blocked by AAA

I 01/16/14 09:24:16 00077 ports: port D16 is now off-line

Connected the same PC to D18, no other changes and it works:

I 01/16/14 09:25:45 00076 ports: port D18 is now on-line

I 01/16/14 09:25:43 00435 ports: port D18 is Blocked by STP

I 01/16/14 09:25:43 00435 ports: port D18 is Blocked by AAA

I 01/16/14 09:25:43 00435 ports: port D18 is Blocked by STP

I 01/16/14 09:25:43 00435 ports: port D18 is Blocked by AAA

I 01/16/14 09:25:40 00077 ports: port D16 is now off-line

No configuration differences between the ports:

interface D16

   tagged vlan 126

   untagged vlan 1

   aaa port-access authenticator

   aaa port-access authenticator client-limit 8

   aaa port-access mac-based

   aaa port-access mac-based addr-limit 8

   aaa port-access mac-based reauth-period 10800

   aaa port-access mac-based unauth-vid 119

   loop-protect

   exit

interface D18

   tagged vlan 126

   untagged vlan 1

   aaa port-access authenticator

   aaa port-access authenticator client-limit 8

   aaa port-access mac-based

   aaa port-access mac-based addr-limit 8

   aaa port-access mac-based reauth-period 10800

   aaa port-access mac-based unauth-vid 119

   loop-protect

   exit

[Carlos_Fandango]

I know its 6 years but did you ever get a solution to this as I appear to have a site suffering the same issue
regards

I 08/18/20 15:27:06 00076 ports: port 18 is now on-line
I 08/18/20 15:31:48 00077 ports: port 18 is now off-line
I 08/18/20 15:31:52 00435 ports: port 18 is Blocked by AAA
I 08/18/20 15:31:52 00435 ports: port 18 is Blocked by STP
I 08/18/20 15:31:52 00435 ports: port 18 is Blocked by AAA
I 08/18/20 15:31:53 00435 ports: port 18 is Blocked by STP
I 08/18/20 15:31:55 00076 ports: port 18 is now on-line
I 08/18/20 15:37:53 00077 ports: port 16 is now off-line
I 08/18/20 15:37:57 00435 ports: port 16 is Blocked by AAA
I 08/18/20 15:37:57 00435 ports: port 16 is Blocked by STP
I 08/18/20 15:37:57 00435 ports: port 16 is Blocked by AAA
I 08/18/20 15:37:58 00435 ports: port 16 is Blocked by STP
I 08/18/20 15:38:00 00076 ports: port 16 is now on-line