I have few questions regarding TE tunnels. Would appreciate your help in understanding some concepts:
1. Why do you use a traffic engineering tunnels? Is this to force traffic to take a particular path? What is the real advantage?
2. What is the effect of routing protocol in choosing path for TE tunnels? I beleive when you define TE tunnel you give path cost? So what is the effect of IGP/OSPF path cost in this case?
3. Does TE tunnel has anything to do with GRE tunnels? Can you define TE tunnel destination to be a remote address like the way in GRE in tunnels?