In the simulations for Smart Peering, what neighbors were included in
the router-LSAs? If only adjacent neighbors were included,
then that could explain the lower overhead obtained for Smart Peering,
and would also result in highly suboptimal paths
(much longer than shortest paths). That is why simulation
results are not very meaningful unless other measures such
as average path length and delivery ratio are also presented.
(The average path length can be obtained from the numbers of UDP
packets sent/forwarded/received, but I did not see those numbers.)
Also, since Cisco is running SPF twice, once for real adjacencies
and once for all acceptable links, I would like to know how
a router knows which non-local links are real adjacencies.
Does the LSA somehow indicate this? Is a different Link State ID
used for real adjacenies versus non-adjacencies?