https://community.extremenetworks.com/t5/extremeswitching-eos/ap-causing-spanguard-alerts/m-p/59772#M1714 I'm having one AP starting to trigger spanguard alerts. Any ideas on what to look into? Not sure of the AP model (but it's the same model of 100s we have across campus) The switch is a B5g. Fri, 26 Aug 2016 01:57:00 GMT Jeremy_Bullock 2016-08-26T01:57:00Z https://community.extremenetworks.com/t5/extremeswitching-eos/ap-causing-spanguard-alerts/m-p/59772#M1714 I'm having one AP starting to trigger spanguard alerts. Any ideas on what to look into? Not sure of the AP model (but it's the same model of 100s we have across campus) The switch is a B5g. Fri, 26 Aug 2016 01:57:00 GMT https://community.extremenetworks.com/t5/extremeswitching-eos/ap-causing-spanguard-alerts/m-p/59772#M1714 Jeremy_Bullock 2016-08-26T01:57:00Z https://community.extremenetworks.com/t5/extremeswitching-eos/ap-causing-spanguard-alerts/m-p/59773#M1715 Hi. I saw that with cisco switch also. It was user attack => user was generating BPDU. I believe you can create L2 rule to block the BPDU based on destination MAC. Fri, 26 Aug 2016 11:30:00 GMT https://community.extremenetworks.com/t5/extremeswitching-eos/ap-causing-spanguard-alerts/m-p/59773#M1715 Zdeněk_Pala 2016-08-26T11:30:00Z