CEP

Customer Edge Port, also known as Selective Q-in-Q or C-tagged Service Interface, is a role that is configured in software as a CEP Virtual MAN (VMAN) port, and connects a VMAN to specific Customer VLAN (CVLAN)s based on the CVLAN CVID (CVLAN ID). The CNP (Customer Network Port) role, which is configured as an untagged VMAN port, connects a VMAN to all other port traffic that is not already mapped to the port CEP role.