RSVP-TE load-balancing practices

Hi, everyone.

I'm trying to come up with a scheme that will allow to load-balance (and, ideally, to load-share, too) traffic between multiple PEs in a partially meshed network built on top of RSVP-TE with EROs as the only constraints plus "cold standby"s as well.

There are some implications regarding international links and paths with long delay but it actually doesn't matter that much, for now (but if someone has smth. to say about AG vs. SRLG, I would be glad to hear your stories). What I hope to hear is what techniques you, guys, are using, what was proven too complex or "buggy" and what is a "must have":

• Just a bunch of parallel LSPs with/without BW constraints

• A couple of LSPs with auto-BW (possibly, with additional prioritiy tricks)

• Container LSPs (for Juniper shops)

• Ditching RSVP-TE in favor of SR (maybe, co-existence)

• External controller (PCEP, anyone?)