Catalyst 3550 and IAS authorization

Is VLAN 6 a mgmt VLAN for swithes ?

Assuming you are using trunking between 3350 and layer 3 switch ?

So IAS authnetication problem only ocurs when you telnet to the mgmt IP address assigned to the 3350 ( - is that right?

Does the authentication problem occur everytime when you telnet to this switch?

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I found and resolve my problem. On L3 switch which is my router to VLANs communicate with I set UDP helper for RADIUS packets. And this makes so kind of troubles. So, when you have to configure UDP helper (or ip helper-address in Cisco nomenclature) you shouldn't set ports other than BOOTP/DHCP 67 regarding to

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Regards Slawek

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