Carrier Ethernet Industry Voices

New Peer Reviewed Paper:  Ethernet Service Protection

by Zehavit Alon 

Over the last few years, packet switching technologies, such as Ethernet and MPLS, have been widely adopted by the industry as the technologies of choice to replace existing networks based on circuit-switching technologies, such as SONET/SDH and ATM. 

Circuit-switched network technologies provide mechanisms that guarantee sub-50ms service protection for their subscribers.  A similar protection level should be provided by the different packet technologies when the identical set of capabilities formerly granted to the subscriber is required, in order for packet technologies to seamlessly replace circuit technologies.

The various packet technologies define different ways of protecting a service within the network. However, all the currently defined local protection methods are intra-network only and there is no standard method for protecting services against node failures over external interfaces, i.e. for protecting connectivity between attached networks.

Click here to read this new Ethernet Academy Peer Reviewed paper by Zehavit Alon on Ethernet Service Protection.