Switchport configured as access port received BPDU ---connected device is a router on other end?

[vasanth77]

Hi,

I have a switch port configured as Access port and this port is connected to a router interface (Voice gateway).From that router interface the switchport received BPDU and the port was flapping.?

Can anybody tell why I'm receiving BPDU on the port which is configured for access port?

What might be wrong on router side ?

please can anybody let me know?

Thanks in advance.,thanks for your time

Regards,

Vasanth

[Kasun Bandara]

Hi there,

did you enabled portfast in port? or bpdu guard?

if so this document may help you.

https://supportforums.cisco.com/document/15446/port-status-errdisable-due-bpdu-guard

regards

kasun

[Richard Burts]

Vasanth

Is it possible that the router is one that has a switch module and that your switch is connected to one of those switch ports on the router?

HTH

Rick