[j-nsp] IP/MPLS fast convergence

Amos Rosenboim amos at oasis-tech.net
Wed Dec 21 13:34:22 EST 2011


Hello All,

I'm planning a greenfield IP/MPLS network for a mobile operator.
The requirements are to support MPLS services (mainly L3 VPNs but also some VPLS), enforce  strict but fairly simple CoS model, and support fast convergence.
No requirement for CSPF based TE.

Traditionally I'de set single hop RSVP LSPs (from access/edge) to core just for the sake of FRR, and tunnel LDP inside these LSPs.
This way I would get FRR without the burden of full mesh RSVP LSPs.

However in the last two years I read more and more about LFA, IP/LDP FRR and similar technologies.

I'm considering to drop RSVP in favor of LFA and LDP, but was wondering if anyone is actually using this in the field, if so what is the impression.

Regards

Amos




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