The value of vRtrMplsLspPathOperCspf specifies whether the
currently operational LSP path has used CSPF computation for
constrained-path enabled or disabled.
When make-before-break functionality for the LSP is enabled and if the
LSP CSPF setting is changed, the resources allocated to the existing
LSP paths will not be released until a new path with the new settings
has been established. While a new path is being signaled, the
administrative value and the operational values of the path may
differ. The value of vRtrMplsLspCspf specifies the CSPF setting for
the new LSP path trying to be established whereas the value of
vRtrMplsLspPathOperCspf specifies the CSPF setting for the existing
LSP path.