Prerequisites for Configuring Ethernet Local Management Interface at a Provider Edge
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Ethernet Operation, Administration, and Management (OAM) must be operational in the network.
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For Ethernet OAM to operate, the provider edge (PE) side of a connection must be running Ethernet Connectivity Fault Management (CFM) and Ethernet Local Management Interface (LMI).
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All VLANs used on a PE device to connect to a customer edge (CE) device must also be created on that CE device.
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To use nonstop forwarding (NSF) and In Service Software Upgrade (ISSU), stateful switchover (SSO) must be configured and working properly.