APRICOT 2011 - MPLS-based Metro Ethernet Networks v1.0
APRICOT 2011 - MPLS-based Metro Ethernet Networks v1.0
APRICOT 2011 - MPLS-based Metro Ethernet Networks v1.0
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MEF Carrier <strong>Ethernet</strong> Terminology<br />
The User Network Interface (UNI):<br />
MEF has defined two types of UNIs:<br />
MEF UNI Type I (MEF 13)<br />
– A UNI compliant with MEF 13<br />
– Manually configurable<br />
– Specified for existing <strong>Ethernet</strong> devices<br />
– Provides bare minimum data-plane connectivity services with no control-plane or<br />
management-plane capabilities.<br />
MEF UNI Type II (MEF 20)<br />
– Automatically configurable via E-LMI (allowing UNI-C to retrieve EVC status and<br />
configuration information from UNI-N)<br />
– Manageable via OAM<br />
Carrier <strong>Ethernet</strong><br />
Network<br />
CE<br />
UNI<br />
UNI<br />
CE: Customer Equipment, UNI: User Network Interface. MEF certified Carrier <strong>Ethernet</strong> products<br />
16 | <strong>MPLS</strong>-<strong>based</strong> <strong>Metro</strong> <strong>Ethernet</strong> <strong>Networks</strong>, February <strong>2011</strong>
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