Resiliency and No Single Point-of-Failure The standard RPR MAC guarantees that
all traffic provisioned over the shared packet ring, including point-to-point, broadcast
and multicast traffic, is restored within less than 50 ms after a link or node failure.
Unlike SONET/SDH five-nines availability can be guaranteed for all classes-of-service,
including best-effort traffic. In addition services can be partially protected so that no
user ever has to go unprotected or buy more protection bandwidth than is required.
Technology Description
Beginning in 2001 the Metro Ethernet Forum (MEF) began work on defining a common
set of specifications for Ethernet services. These service definitions were intended to
give service providers a common language and set of performance criteria that would
allow them to offer Ethernet Service Level Agreements (SLAs) and provide common
performance parameters for network-to-network interfaces between carriers. While
the Technical committee received proposals and drafted specifications the Marketing
committee developed a common framework to discuss these specifications for Ethernet
services that could be used by service providers around the globe.
Pages:
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761