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Cisco Bug: CSCup00390 - NEAT with open auth is not supported and may cause err-disabled

Last Modified

Nov 27, 2020

Products (180)

  • Cisco Catalyst 2960-C Series Switches
  • Cisco Catalyst 3560E-48PD-E Switch
  • Cisco Catalyst 3560X-48T-E Switch
  • Cisco Catalyst 2960S-24PD-L Switch
  • Cisco Catalyst 3560CG-8TC-S Compact Switch
  • Cisco Catalyst 3560E-24TD-S Switch
  • Cisco Catalyst 2960-48TT-S Switch
  • Cisco Catalyst 2960-24TC-L Switch
  • Cisco Catalyst 2960G-24TC-L Switch
  • Cisco Catalyst 3750V2-24FS Switch
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Known Affected Releases

15.0(2)SE5 15.2(1)E

Description (partial)

BPDU guard with NEAT on WS-C2960CG-8TC-L triggers err-disabled even that "dot1x supplicant controlled transient" is present in the configuration.

The root cause is Open Auth mode being used which is not supported and documented with CSCuq58344.

The purpose of this enhancement is to track if there is a need for Open Auth for NEAT.

-- NEAT using WS-C2960CG-8TC-L
-- bpdu guard enabled on authenticator
-- Open Auth

Related Community Discussions

We are testing NEAT to provide network to some meeting rooms. BPDUGuard is globally enabled on authenticator switches. When supplicant switch is connected to a port, before the authentication completes, port is put in err-disable. If bpduguard is disabled on port everything works fine.   Authenticator is a 2960X running 15.0-2a.EX5.   Is this the expected behavior? Is there a way to get the port not being disabled without removing manually bpduguard?    
Latest activity: Nov 30, 2017
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