BPDU on Switchport

Unanswered Question
Mar 9th, 2009
User Badges:

Hi,

Host is generating BPDU on the Switch port. Please help when host can generate BPDU and what is the Standard Solution??


%SPANTREE-2-BLOCK_BPDUGUARD: Received BPDU on port FastEthernet2/0/18 with BPDU Guard enabled

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Loading.
Leo Laohoo Mon, 03/09/2009 - 22:17
User Badges:
  • Super Gold, 25000 points or more
  • Hall of Fame,

    The Hall of Fame designation is a lifetime achievement award based on significant overall achievements in the community. 

  • Cisco Designated VIP,

    2017 LAN, Wireless

Are you sure port FastEthernet2/0/18 does not have a switch on the far end?


You can disable (at your own peril) BPDU Guard by doing the following commands:


interface FastEthernet2/0/18

no spanning-tree bpduguard enable

Giuseppe Larosa Tue, 03/10/2009 - 00:56
User Badges:
  • Super Silver, 17500 points or more
  • Hall of Fame,

    Founding Member

Hello Rupesh,

if the host is bridging between two NICs your switch can listen to the BPDUs received on the other host NIC port.


So be careful and investigate on what is the host doing


Hope to help

Giuseppe


Actions

This Discussion