networker050184 wrote: »
Stability, scalability and ease of policy.
gorebrush wrote: »
I would add granularity to the list as well. One can exert precise levels of control over BGP.
dppagc wrote: »
Furthermore BGP separates different AS. So the other AS will be under the control of another ISP.
Those routes will not be in your routing table and not your business.
daveyb wrote: »
To run an IGP with your provider, you would need some kind of globally connected area... who would be area 0 (or level 2 in IS-IS)? If a link flapped in Australia, everyone's routers would reconverge. Today's routing table is around 600k prefixes. Imagine the length of time it would take for OSPF/IS-IS (Seriously, no one seriously uses EIGRP in production at scale...) to converge under a link failure. Yikes!