Use the following syntax to configure the maximum number of labels which the ingress LER can push for a specific SR-TE LSP:
config>router>mpls>lsp>max-sr-labels label-stack-size
This command allows the user to reduce the SR-TE LSP label stack size by accounting for additional transport, service, and other labels when packets are forwarded in a specific context. See Data path support for more information about label stack size requirements in various forwarding contexts. If the CSPF on the PCE or the router's hop-to-label translation could not find a path that meets the maximum SR label stack, the SR-TE LSP remains on its current path or remains down if it has no path. The range is 1-10 labels with a default value of 6.