I went through Keith Barkers MPLS fundamentals tutorial and got the general jist of it and I'm hoping someone with practical experience can give me an answer to two specific questions:
1 - What is the use case for the swap function? Is this widely used in practice or more of a vestigial feature?
2 - how would you use multiple stacked labels? My gut feeling tells me it will be in mamooth deployments when you've reached the limits of what can be done with one label maybe for something like a super backbone.
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