Label Switched Path - definição. O que é Label Switched Path. Significado, conceito
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O que (quem) é Label Switched Path - definição

NETWORK ROUTING SCHEME BASED ON LABELS IDENTIFYING PATHS
MPLS; Multi-protocol label switching; Multi-protocol Label Switching; Multi-Protocol Label Switching; Multi Protocol Label Switching; Multi protocol label switching; Multiprotocol label switching; Label switched path; Label-switched path; Label edge router; Label switch router; Label Switching Router; Tag switching; Transit router; IP/MPLS; Label Edge Router; Label Switch Router; Label switching router; Mofrr; Label Switched Path

label switched path         
<networking> (LSP) The specific path through a network that a datagram follows, based on its MPLS labels. (1999-06-14)
Label Switching Router         
<networking> (LSR) A device that typically resides somewhere in the middle of a network and is capable of forwarding datagrams by label switching. In many cases, especially early versions of MPLS networks, a LSR will typically be a modified ATM switch that forwards datagrams based upon a label in the VPI/VCI field. (1999-06-14)
Multiprotocol Label Switching         
<networking> (MPLS) A packet switching protocol developed by the IETF. Initially developed to improve switching speed, other benefits are now seen as being more important. MPLS adds a 32-bit label to each packet to improve network efficiency and to enable routers to direct packets along predefined routes in accordance with the required quality of service. The label is added when the packet enters the MPLS network, and is based on an analysis of the packet header. The label contains information on the route along which the packet may travel, and the forwarding equivalence class (FEC) of the packet. Packets with the same FEC are routed through the network in the same way. Routers make forwarding decisions based purely on the contents of the label. This simplifies the work done by the router, leading to an increase in speed. At each router, the label is replaced with a new label, which tells the next router how to forward the packet. The label is removed when the packet leaves the MPLS network. Modern ASIC-based routers can look up routes fast enough to make the speed increase less important. However, MPLS still has some benefits. The use of FECs allows QoS levels to be guaranteed, and MPLS allows IP tunnels to be created through a network, so that VPNs can be implemented without encryption. MPLS Resource Center (http://mplsrc.com/). [RFC 3031] (2002-04-14)

Wikipédia

Multiprotocol Label Switching

Multiprotocol Label Switching (MPLS) is a routing technique in telecommunications networks that directs data from one node to the next based on labels rather than network addresses. Whereas network addresses identify endpoints the labels identify established paths between endpoints. MPLS can encapsulate packets of various network protocols, hence the multiprotocol component of the name. MPLS supports a range of access technologies, including T1/E1, ATM, Frame Relay, and DSL.