GMPLS Terms and Acronyms
C
control adjacency
A signaling path between peer devices in a GMPLS network that typically travels across virtual peer interfaces. Protocols are enabled on the control adjacency, which can have one or more associated control channels.
control channel
The actual interfaces where protocol packets are sent and received by GMPLS peers. If more than one control channel is configured, LMP selects which control channel is active.
F
Fiber-Switched Capable (FSC)
LSPs are switched between two fiber-based devices, such as optical cross-connects (OXCs), that operate at the level of individual fibers.
forwarding adjacency
A forwarding path for sending data between peer devices in a GMPLS network.
G
Generalized Multiprotocol Label Switching (GMPLS)
An extension to MPLS that allows data from multiple layers to be switched over label-switched paths (LSPs). GMPLS LSPs are possible between equivalent Layer 1, Layer 2, and Layer 3 devices. For more information about GMPLS and MPLS, see the Junos MPLS Applications Configuration Guide.
GMPLS label
A fiber port, TDM time slot, DWDM wavelength, or data packet identifier of a GMPLS-enabled device used as a next-hop identifier.
L
Lambda-Switched Capable (LSC)
LSPs are switched between two DWDM devices, such as such as OXCs, that operate at the level of individual wavelengths.
Link Management Protocol (LMP)
A GMPLS-related protocol defined in RFC 4204 that is used to define control adjacencies and forwarding adjacencies between peers and to maintain and allocate resources on traffic engineering links.
P
Packet-Switched Capable (PSC)
LSPs are switched between two packet-based devices, such as routers or ATM switches.
T
TDM-Switched Capable (TDM)
LSPs are switched between two TDM devices, such as SONET/SDH ADMs.
traffic engineering link
A logical connection between GMPLS-enabled devices. traffic engineering links can have addresses or IDs and are associated with certain resources or interfaces. They also have certain inherent attributes, such as encoding type, switching capability, and bandwidth. Each traffic engineering link represents a forwarding adjacency between a pair of devices.
