Terms and Acronyms

backup LSP—A redundant LSP used to reroute a single, primary LSP. Backup LSPs are found in link protection, node-link protection, and fast reroute redundancy methods.
bypass LSP—A logical trunk used to reroute multiple backup LSPs over a single connection protected with link protection.
link protection—A method of establishing bypass LSPs to provide rapid reroute capability for primary LSPs on a per-link basis. For more information about link protection, see the JUNOS MPLS Applications Configuration Guide.
node-link protection—A method of establishing bypass LSPs to provide rapid reroute capability for primary LSPs on a per-node basis. If node protection is unavailable, the LSP attempts to use link protection. For more information about node-link protection, see the JUNOS MPLS Applications Configuration Guide.