Just trying to understand a few concepts in regards to link and node proection.
If you have a primary and secondary LSP within RSVP and use link and node protection my understand is that it provides subsecond failover times but also signals to the ingrees LSP with a path tear that the tunnel is down. Am i right in saying then that link and node protection just a temporary measure until the primary LSP is torn down and the secondary LSP kicks in?
Also is link and node protection calculated via CSPF shortest path by default? can you set contraints based on the link colouring or use a ERO and statically define the alternnate path?