N WLLA OMNI

N = next hop reachability

W = weight, bigger is better  (Local router)

L = local preference, bigger is better  (AS / non transitive) 

L = locally injected preferred over BGP learned  (network / aggregate )

A = AS path length, shorter is better 

O = origin, (igp is better than egp is better than incomplete)  I IGP - E Exterior Gateway Protocol (EGP), ? INCOMPLETE.

M = MED, lower is better  (route suggestion)

N = neighbor type, ebgp better than ibgp (Prefer eBGP over iBGP paths)

I = IGP metric to BGP next-hop, lower is better