HIFs go down with the BPDUGuard errDisable message(STP)

HIFs go down accompanied with the message, BPDUGuard errDisable.

Possible Cause

By default, the HIFs are in STP edge mode with the BPDU guard enabled. This means that the HIFs are supposed to be connected to hosts or non-switching devices. If they are connected to a non-host device/switch that is sending BPDUs, the HIFs become error-disabled upon receiving a BPDU.

Solution

Enable the BPDU filter on the HIF and on the peer connecting device. With the filter enabled, the HIFs do not send or receive any BPDUs. Use the following commands to confirm the details of the STP port state for the port:

•show spanning-tree interface <id> detail

•show spanning-tree interface <id>