[j-nsp] Creating multiple LAGs Vs putting all links in a single LAG - Pros and Cons

[NK NSP]

Hi,

Just looking for some comments and/or thoughts on either approach. If you
have 2 diverse fiber spans between 2 end-point IP devices with separate
metro gears for each span and have created multiple 100G links on each
fiber span, would you rather create a single LAG bundle on both IP
end-points and put all 100Gs in single LAG or create 2 separate LAGs and
put the links from each span into its own LAG bundle (for e.g. ae0 for Span
A and ae1 for Span B).

Some of the motivations for single LAG is config simplification and less
interface states for router to manage. For multiple LAGs one can argue
better hashing and link utilization for all links.

Any thoughts/Comments?

Thanks,
NK.