DETAILED STEPS
PurposeCommand or Action
Follow these steps:Determine operator level
MIPs.
Step 1
•
Starting at lowest operator level domain, assign a MIP at every interface internal to
the operator network to be visible to CFM.
•
Proceed to next higher operator level and assign MIPs.
•
Verify that every port that has a MIP at a lower level does not have maintenance points
at a higher level.
•
Repeat steps a through d until all operator MIPs are determined.
Follow these steps:Determine operator level
MEPs.
Step 2
•
Starting at the lowest operator level domain, assign a MEP at every UNI that is part
of a service instance.
•
Assign a MEP at the network to network interface (NNI) between operators, if there
is more than one operator.
•
Proceed to next higher operator level and assign MEPs.
•
A port with a MIP at a lower level cannot have maintenance points at a higher level.
A port with a MEP at a lower level should have either a MIP or MEP at a higher level.
Follow these steps:Determine service provider
MIPs.
Step 3
•
Starting at the lowest service provider level domain, assign service provider MIPs at
the NNI between operators (if more than one).
•
Proceed to next higher service provider level and assign MIPs.
•
A port with a MIP at a lower level cannot have maintenance points at a higher level.
A port with a MEP at a lower level should not have either a MIP or a MEP at a higher
level.
Follow these steps:Determine service provider
MEPs.
Step 4
•
Starting at the lowest service provider level domain, assign a MEP at every UNI that
is part of a service instance.
•
Proceed to next higher service provider level and assign MEPs.
•
A port with a MIP at a lower level cannot have maintenance points at a higher level.
A port with a MEP at a lower level should have either a MIP or a MEP at a higher
level.
Customer MIPs are allowed only on the UNIs at the uPEs if the service provider allows the
customer to run CFM. Otherwise, the service provider can configure Cisco devices to block
CFM frames.
Determine customer MIPs.
Step 5
•
Configure a MIP on every uPE, at the UNI port, in the customer maintenance domain.
Carrier Ethernet Configuration Guide (Cisco ASR 920 Series)
135
Configuring Ethernet Connectivity Fault Management in a Service Provider Network
Designing CFM Domains