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Service Provider Context Service Provider POP Access Transit PSN Access Service Provider POP PE1 Customer location Customer location PE2 CE1 CE2 Customer equipment Customer equipment PE1 PE2 CE1 CE2 Customer equipment Customer equipment Service Providers are looking at delivering End to End services (circuit, packet-based) PWs are defined between PE1 and PE2 and ACs are defined over the access network, PWE3 documents focus on the PW part Not only does the Service Provider use the Transit PSN but it also needs to rely on two Access/Metro networks to successfully deliver its services This draft takes into consideration the specific problems encountered by SPs for the deployment and monitoring of E2E services |