[j-nsp] Internet routes in MPLS network, global table or own VRF?

[Pavel Lunin]

> Why not FRR everything? The control plane hit is negligable even if
> your internet users wouldn't notice, care about, or even understand
> the improvements.
>

FRRed traffic can follow very fancy routes eating bandwidth on the way. FRR
for high loads is like sending trucks from a speedway to a narrow detour
path through a village 10 miles away. Only effect is getting it jammed. The
Internet users will also not notice a well-tuned IGP reroute or a head-end
switchover to a pre-signaled backup LSP.

What the VRF-based Internet users will definitely notice is (looks like RAS
is tired of telling this story) is ICMP tunneling and consequent hard to
interpret delay values. People are very suspicious to the numbers. This is
almost impossible to explain, that the numbers, traceroute shows, have
nothing to do with their kitty-photos-not-loading problem.