This article written by Netrounds' MEF-certified VP of Product Management, Marcus Friman, provides some information about Layer 2 Control Protocols (L2CP) according to the Metro Ethernet Forum specifications.
Most of the information in this article is based on contents in the MEF 45 technical specification “Multi-CEN L2CP” from August 2014 and MEF 6.1.1 “Layer 2 Control Protocol Handling Amendment to MEF 6.1”.
As a summary, this article describes:
1. What L2CP is, and why there are certain rules that apply to such protocols in a Carrier Ethernet network (CEN).
2. How the different L2CP destination MAC addresses and protocol types should be handled according to Metro Ethernet Forum for EPL option 1 and 2, E-Tree, E-LAN, EVPL, EVPLAN and EVP-Tree.
You can find the article here.