[c-nsp] RES: Unified MPLS - Discrete area or separate IGP in AccessLayer

[Leonardo Gama Souza]

> You could summarize L2 routes and redistribute those into L1, but you
end up with sub-optimal routing (which is why I recommend turning off
the ATT bit when doing L1/L2 routing anyway).

You could use "advertise passive-only" in order to scale the number of
L2 routes, considering you only have your loopback as passive.

Sincerely,

Leonardo Gama.