In a Carrier Ethernet domain,Could someone please help me understand what's the basic difference between Access Switch and Aggregation Switch both in terms of s/w and h/w functionalities. MEF deals OAM,CFM, EVC provisioning only at the access edge switches. Do we need to repeat all these at the aggregation level? or is it just used for routing purpose? Do we have a separate Fault Management at the aggregation level?
