LSP
label switched path
LSPs support MPLS functions and allow network operators to perform traffic engineering.
There are several types of LSPs:
• static LSP
A static LSP specifies a static path. All devices that the LSP traverses must be configured manually with labels. No signaling is required.
• signaled (dynamic) LSP
A signaled LSP is set up using a signaling protocol. The signaling protocol facilitates path selection and allows labels to be assigned from an ingress device to an egress device. Signaling is triggered by the ingress router; only the ingress router requires configuration.
• bypass-only LSP
A bypass-only LSP has manually configured bypass tunnels on PLR NEs and is used exclusively for bypass protection.
• segment routing TE LSP
A segment routing TE LSP is established with trafic engineering and protection requirements based on different parameters, such as hop limit, IGP shortcut , BGP shortcut and maximum segment routing labels.
• Point-to-Multipoint LSP
A Point-to-Multipoint LSP allows the source of multicast traffic to forward packets to one or many multicast receivers over a network without requiring a multicast protocol, such as PIM, to be configured in the network.