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Dynamic VLAN assignement works randomly on 2960-X after upgrading in 15.2(7)E1

AURELIEN MERE
Level 1
Level 1

Hello

 

After upgrading our 2960-X stacks from 15.2(6)E3 to 15.2(7)E1, dynamic vlan assignment through MAB works randomly.

We sometimes encounter this kind of errors :

%PM-3-INTERNALERROR: Port Manager Internal Software Error (vlan > 0 && vlan < PM_MAX_VLANS: ../switch/pm/pm_vlan.c: 878: pm_vlan_test_portlist)

the port stays in VLAN 1 and MAC address on the port is in "Drop" state in the MFT.

We have the problem only with 2960-X stacks in 15.2(7)E1, all others are working fine.

RADIUS Debug show that the Tunnel-Private-Group-Id is correctly received on the switch, but somehow is discarded.

Have you encountered the same issue ?

Thanks for your help

 

Aurélien

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