Please refer to attached diagram.
TE tunnels is configured between Site A and Site B, fully meshed.
But I have Site C, due to geographical near to Site B , the link is connect to site B PE routers, not to P router.
Q: To reach site A shall I just build tunnel between C to A.
Or, I just need C to B will do ??
Assume packet will flow from C to B tunnel, exist then via tunnel B to A to reached network in site A.