The 7210 SAS supports Manual bypass tunnels, on implementation of the Manual bypass feature a LSP can be preconfigured from a PLR which is used exclusively for bypass protection. If a path message for a new LSP requests for bypass protection, the node checks if a manual bypass tunnel satisfying the path constraints exists. If a tunnel is found, it is selected. If no such tunnel exists by default, the 7210 SAS dynamically signals a bypass LSP.
Users can disable the dynamic bypass creation on a per node basis using the CLI.
A maximum of 1000 associations of primary LSP paths can be made with a single manual bypass at the PLR node. If dynamic bypass creation is disabled on the node, it is recommended to configure additional manual bypass LSPs to handle the required number of associations.