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Several MPLS services including end-to-end QoS management, [18] and 6PE, [19] require keeping a label even between the penultimate and the last MPLS router, with a label disposition always done on the last MPLS router, ultimate hop popping (UHP). [20] [21] Some specific label values have been notably reserved [22] [23] for this use. In this ...
Two routers with an established session are called LDP peers and the exchange of information is bi-directional. LDP is used to build and maintain label-switched path (LSP) databases that are used to forward traffic through MPLS networks. LDP can be used to distribute the inner label (VC/VPN/service label) and outer label (path label) in MPLS.
"Examples of the label switching (or virtual circuit) model include Frame Relay, ATM, and MPLS. In this model, path forwarding state and traffic management or quality of service (QoS) state is established for traffic streams on each hop along a network path. Traffic aggregates of varying granularity are associated with a label-switched path at ...
1.1 Router SoC. 2 Network switches. 3 Wireless. Toggle Wireless subsection. 3.1 Wireless controller. 4 Network interface card. Toggle Network interface card subsection.
The label edge routers at the edges of an MPLS cloud map between the end-to-end identifier, such as an IP address, and a link-local label. At each MPLS hop, there is a forwarding table that tells the label-switched router which outgoing interface is to receive the MPLS packet, and what label to use when sending the packet out that interface.
Generalized Multi-Protocol Label Switching (GMPLS) [1] is a protocol suite extending MPLS to manage further classes of interfaces and switching technologies other than packet interfaces and switching, such as time-division multiplexing, layer-2 switching, wavelength switching and fiber-switching.
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In telecommunications, Multiprotocol Label Switching - Transport Profile (MPLS-TP) is a variant of the MPLS protocol that is used in packet switched data networks. MPLS-TP is the product of a joint Internet Engineering Task Force (IETF) / International Telecommunication Union Telecommunication Standardization Sector (ITU-T) effort to include an MPLS Transport Profile within the IETF MPLS and ...