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Nails Spanning Tree protocols (particularly in Oracle switching networks pluralsight ccna 200 301 ) more thoroughly than any other text except possibly Perlman. Unfortunately this book was published in 1999! I think it's about time to drop the MPoA and token-ring information, and cut this book down to 400 pages or dramatically expand the coverage of all permutations of Ethernet switching. pluralsight ccna 200 301