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Ingress
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The direction from the CE into the Service Provider network.
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Ingress Bandwidth Profile
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A characterization of ingress Service Frame arrival times and lengths at the ingress UNI and a specification of disposition of each Service Frame based on its level of compliance with the characterization.
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Ingress Frame
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A service frame sent from the CE to the Service Provider network.
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Ingress Service Frame
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A Service Frame sent from the CE into the Service Provider network
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Ingress Service Frame
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A Service Frame sent from the CE into the Service Provider network.
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I-NNI
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Internal NNI
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ITU
|
International Telecommunication Union
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ITU-T
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International Telecommunication Union – Telecommunication standardization sector
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IWF
|
Interworking Function
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L1
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Layer One
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L2
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Layer Two
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L2+
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Layer(s) above L2
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L2CP
|
Layer Two Control Protocols
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LACP
|
Link Aggregation Control Protocol
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LAG
|
Link Aggregation Group
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LAN
|
Local Area network
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LANE
|
ATM LAN Emulation
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Layer 2 Control Protocol Service Frame
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A Service Frame that is used for Layer 2 control, e.g., Spanning Tree Protocol
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Layer 2 Control Protocol Service Frame Delivery
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The process by which a Layer 2 Control Protocol Service Frame is passed through the Service Provider network switches without being processed by those switches and delivered to the proper UNI(s).
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Layer 2 Control protocol Tunneling
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The process by which a Layer 2 Control protocol Service Frame is passed through the Service Provider network without being processed and delivered unchanged to the proper UNI(s).
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Link
|
An ETH link or TRAN link
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LLC
|
Logical Link Control
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LOF
|
Loss of Frame, Loss of Frame Alignment
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LOFS
|
Loss of Frames State
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LOH
|
Line OverHead
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LOPS
|
Loss Of Packet Synchronization
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LOS
|
Loss of Signal
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LOVC
|
Lower Order Virtual Container
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LSP
|
Label Switched Path
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LSR
|
Label Switched Router
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LTE
|
Line Termination Equipment
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MAC
|
Media Access Control
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Mapper
|
A device or logic that implements a mapping function
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Mapping
|
The process of associating each bit transmitted by the service into the SDH/SONET payload structure that carries the service. For example, mapping a DS1 service into SONET VT-1.5 / SDH VC-11 associate each bit of the DS1 with a location in the VT-1.5/VC-11
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Maximum number of EVCs
|
A UNI service attribute ?
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Maximum Number of UNIs
|
The maximum number of UNIs that may be in an EVC.
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MCF
|
MAC Convergence Function
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ME
|
Maintenance Entity
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Mean time to restore
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The mean time from when a service is unavailable to the time it becomes available again
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MEF
|
Metro Ethernet Forum
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MEG
|
Maintenance Entity Group
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MEN
|
Metro Ethernet Network
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MEN-bound IWF
|
The IWF receiving TDM data from the customer’s TDM-based equipment, and forwarding this data in the form of Ethernet frames into the MEN.
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ME-NE
|
Metro Ethernet Network Element
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MEP
|
MEG End Point
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Metro Ethernet Network
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The Service Provider’s network providing Ethernet services
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Metro Ethernet Network Element
|
A Network Element supporting Metro Ethernet services
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MIB
|
Management Information Base
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MIF
|
MAC Independent Function
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MIP
|
MEG Intermediate Point
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MNU
|
Maximum Number of UNIs
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MPLS
|
Multi Protocol Label Switching
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