
436 Chapter 9 Multiprotocol Label Switching (MPLS)
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for interface addresses as incoming or outgoing addresses can be applied.
If such a next hop is found, processing continues at step 9.
If the second abstract node is a loose hop, the LSR chooses any next hop
toward the second abstract node, removes the first, and continues at step 9.
If no route has been found (which includes no route available, and second
abstract node is a strict hop) the LSP setup fails.
There being no more explicit route present, the LSR may insert a fresh
series of abstract nodes as a new explicit route ...