Use of SID labels as first hop for resolving non-colored static segment routing LSPs

Currently, for a static non-colored segment routing traffic-engineered LSP to be usable, the first hop of the segment list must be an IP address. Only the second to nth hop could be segment identifier (SID) labels. Starting in Junos OS Release 19.1R1, this requirement does not apply. You can now configure SID labels as the first hop in the segment list. With this configuration, static non-colored segment routing LSPs are resolved using MPLS fast reroute (FRR) and weighted equal-cost multipath. Without this configuration, by default, the LSPs are resolved using IP address.