Rick Gallagher's MPLS Training Guide: Building Multi-Protocol Label Switching Networks

Appendix B: Glossary

Appendix B: Glossary

A-E

AAL5oMPLS
ATM protocol layer AAL5 to MPLS
ATM
Asynchronous Transfer Mode
AtoM
Any Transport over MPLS
Back-up Path
The path that traffic takes if there is a failure on the primary path
BGP
Border Gateway Protocol
Binding
The process of relating an FEC to a label.
BW
Bandwidth
CBR
Constant Bit Rate
CIR
Committed Information Rate
CR-LDP
Constraint-based Routing over Label-Distribution Protocol.
CRoMPLS
Constraint-based Routing over MPLS
DiffServ
Differentiated Services; a Layer-3 marking and classifying protocol.
DOD
Downstream On Demand
DOU
Downstream Unsolicited
Dropped Packets
Percentage of packets lost as they move from end to end.
DWDM
Dense Wavelength Division Multiplexing
EIGRP
Enhanced Interior Gateway Routing Protocol
EoMPLS
Ethernet over MPLS
Explicit Route
A path across the Internet wherein all routers are specified. Packets must follow this route and cannot detour.
Explicit Routing
Clearly detailed or expressed routing, such as strict source routing and MPLS.

F-L

Fast ReRoute (FRR)
A protection plan in which a failure can be detected without a need for error notification or failure signaling. (Cisco)
FEC
Forward Equivalence Class; also, Functional Equivalent Class
FWQ
Fair-Weight Queuing
GMPLS
Generalized Multi-Protocol Label Switching
GRE
Generic Routing Encapsulation (RFC 1701)
Hard State
A link, path, or call that will stay alive until it is specifically shut down.
Implicit Routing
Routing that is not detailed but is implied, such as traditional IP routing.
Independent Control
A label-distribution method in which there is no designated label manager, and routers generate and distribute their own cross-connect tables.

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