I am reading about CEoP. I found mainly two different type of modules. One type can only connected to Cisco7600 and other one in small routers like cisco2600. But each type are using different encapsulation for xconnection. One is using mpls other one is using udp. If I want to integrate both in one network what will be the common encapsulation in both modules? Because i never see udp encapsulation used in Cisco7600.