Contributed by tbert on from the ping-over-ospf-over-bgp-over-mpls dept.
Lawrence Teo recently posted a guide on how to run MPLS:
A few months ago, I wrote a diff to simplify the calculation of ICMP extension header checksums in the OpenBSD kernel. It so happened that the code is only used by the OpenBSD MPLS subsystem. I didn’t have access to an OpenBSD-based MPLS network at the time, nor was I familiar with MPLS in general; so in the spirit of the OpenBSD hacker mantra “shut up and hack,” I set out to build a small MPLS test network to test my diff. :)
Link to the complete article here.
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