The IEEE at a meeting in Tokyo has approved the Provider Backbone Bridging - Traffic Engineering standard, based on provider backbone transport technology. PBT has had its ups and downs over the last couple of years, but the standard's ratification as PBB-TE should give the connection-oriented Ethernet technology a boost against Layer 3-based solution multi-protocol layer switch-transport profile (MPLS-TP). That technology is being standardized by the International Telecommunications Union.
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IEEE said in April it was putting finishing touches on the standard