This is the blog of Ronald Bartels that wanders on and off the subject of problem management (that is how it started), but it is best described by Ray who says this is Daddy's thoughts! Like the best music is from the Eighties and a wee dram helps in solving most inconveniences.
9 Common Spanning Tree Mistakes - Frequent spanning tree protocol misconfigurations cause network problems
Ethernet devices running the Spanning Tree Protocol (STP) have been
implemented in networks since the early 1990s. Many organizations take
STP for granted and do not configure it per industry best practices. STP
errors are very common and during the past 15 years we have witnessed
the same errors being made over-and-over again. For such a well
established protocol, it is surprising that we have not progressed
beyond these types of STP configuration mistakes. This article covers
the most frequent STP errors and how to correct them.