19.1.7 Notes common to Spanning Tree Protocols
(1) CPU overloading
If the CPU is overloaded, the BPDUs sent and received by the Switch are discarded, a
timeout message might be output, the topology might change, and communication might
be temporarily cut off.
(2) Specifying configuration commands that disable VLANs
When the
Spanning Tree functionality for the Switch, all VLANs temporarily go down.
no spanning-tree disable
configuration command is used to enable the
19 Spanning Tree Protocol
303