
Radia Perlman
publishedRadia designed the spanning tree algorithm that transformed Ethernet from the original limited-scalability, single-wire CSMA/CD, into a protocol that can handle large clouds. Later, she improved on spanning tree-based Ethernet by designing TRILL (TRansparent Interconnection of Lots of Links), which allows Ethernet to make optimal use of bandwidth. Her textbook Interconnections made a science out of the murky field of network protocols.