To remove the LSP from the device‘s configuration, use the no lsp name command. To make changes to an active LSP, first, disable the LSP, modify parameters on the LSP, and then enable the LSP.
To disable a signaled LSP tunnel1, complete the following steps.device# configure
device(config)# router mpls
device(config-router-mpls)# lsp tunnel1
device(config-router-mpls-lsp-tunnel1)# disable
The following example disables LSP tunnel1.
device# configure device(config)# router mpls device(config-router-mpls)# lsp tunnel1 device(config-router-mpls-lsp-tunnel1)# disable