Tuesday, May 15, 2018

MPLS-TE Advice Needed

I am working on designing an MPLS network for an enterprise customer. It will be used for L3VPN and L2VPN. They are wanting more control over path decisions than what the IGP provides. I have read some docs, watched some Cisco Live videos, etc. and there are lots of options to consider. Relative to other SP networks, this is a very small network (10 PE routers).

I need a little help understanding what are people actually deploying with success, and what features should i stay away from? Or maybe some of these are overkill for the size of the network like auto-tunnel mesh groups.

Features I'm considering using:

  1. Auto-tunnel mesh groups
  2. Auto-bandwidth
  3. Per-service tunnel selection using service path preference
  4. FRR with link or node protection
  5. Use TE metric to route based on latency instead of other factors

Requirements:

  1. Different traffic types (within a VRF) can take different paths based on policy (i.e. - replication traffic, voice, normal data)
  2. Keeping traffic intra-continent unless there is no on-continent path available.
  3. Very fast failure detection and re-convergence.


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