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EVC structure for a Protected E-Line service Maarten Vissers 2010-11-23.

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Presentation on theme: "EVC structure for a Protected E-Line service Maarten Vissers 2010-11-23."— Presentation transcript:

1 EVC structure for a Protected E-Line service Maarten Vissers

2 Introduction The following slides illustrate the structure of an EVC which is set up to support a protected E-Line service in One Carrier network (X) Two Carrier networks (X,Y) Each Carrier network includes access, metro and core domains EVC is set up with Dual Node Interconnections between domains and between Carrier Networks Between access/metro and metro/core domains two nodes are used to interconnect Between carrier X/carrier Y networks four nodes are used to interconnect EVC is not loop free and it is required to block forwarding of VLAN frames on the alternative paths This is normal behavior within protected P2P connections

3 B A 2 1 UNI Access Metro (partial mesh of virtual links) Core (full mesh of virtual links)Metro (EVC ring) B A 2 1 Carrier X Network UNI Dual-node-interconnect protected P2P EVC in Carrier X network block forwarding of frames in EVC EVC Terminating or Bridging Node Ethernet physical linkEthernet virtual link DNI Protected P2P EVC VLAN frame in EVC EVC set up in Carrier X Network

4 Access Core (full mesh) Metro (EVC ring) A 2 1 Access Metro (partial mesh) Core (full mesh) B Carrier X Network Carrier Y Network E-NNI UNI EVC Terminating or Bridging Node Ethernet physical linkEthernet virtual link

5 A 2 1 B Carrier X Network Carrier Y Network E-NNI UNI Dual-node-interconnect protected P2P EVC in Carrier X and Y networks block forwarding of frames in EVC DNI Protected P2P EVC VLAN frame in EVC EVC set up in Carrier X and Y Networks


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