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Features 2008 P1
Packet optical transport and the evolution of Ethernet
By Fred Ellefson, ADVA Optical Networking -- In the next stage of its evolutionary development, Ethernet becomes the protocol for transport across an optical infrastructure in access, metro, regional, and core networks.
An overview of VPLS
By Daniel Joseph Barry, TPACK -- This companion article to "Multipoint PBB-TE and T-MPLS" covers the basics of virtual private LAN service as well as an overview of Hierarchical VPLS, which has been proposed as a way to address scalability concerns.
An overview of PBB and PLSB
By Daniel Joseph Barry, TPACK -- This companion article to "Multipoint PBB-TE and T-MPLS" provides an overview of Provider Backbone Bridging and introduces Provider Link State Bridging, a link-state protocol alternative to Spanning Tree Protocol.
Multipoint PBB-TE and T-MPLS
By Daniel Joseph Barry, TPACK -- One of the criticisms of PBB-TE and T-MPLS is their focus on point-to-point connections. There are demands for PBB-TE and T-MPLS to extend this functionality with multipoint support. The following provides an overview of what has been achieved, but also shows that true any-to-any multipoint requires more.
Is GPON the access technology for the next decade?
By David Cleary, Calix -- GPON dwarfs most other access technologies in terms of bandwidth deliverable to the subscriber. And GPON economics, both capital and operational, are superior to those of other access technologies. In fact, within the cable industry it is conceivable that GPON will be a successor to DOCSIS 3.0.
Advances in WDM and ROADMs: The key to your success
By Ronen Mikdashi, ECI Telecom -- The latest advances in multidegree ROADM and packet optical networking technologies enable independent service providers to remain competitive.
Measuring jitter accurately
By Jim Anuskiewicz, Spirent Communications -- With an accurate and clear picture of jitter performance, the test engineer can better understand jitter characteristics in the network or network device.
IMS testing more than just protocols
By Stephen Hardy, editorial director and associate publisher -- IP networking may provide the foundation of IMS, but vendors and carriers alike will discover that traditional IP test tools won't be sufficient to meet their IMS requirements, says at least one test equipment insider.
Goodbye SONET/SDH, hello next-gen ROADM
By Vinay Rathore, Ciena Corp. -- What is the best way to migrate my existing network infrastructure toward a next-generation solution without throwing away my existing assets?
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