Dear All,
Any of you know if there are any difference, in terms of resurce usages, between Confederation and Route Reflector configuration?
Thank you
Anyone?
I don’t know about resource utilization, but confederations are generally only needed for extremely large networks like backbone providers. Confederations are roughly analogous to OSPF areas - your ASN is divided internally into several seperate ASNs which have policies between themselves, but to the outside world, you present a single, unified policy.
Route Reflectors are useful in non-confederations and in confederations as well.
Generally, you’d like to have at least two RRs in your ASN and all BGP speakers peer with both RRs for iBGP.
Agree with the commnents ZeroByte made…confederations are typically used to divide an extremely large AS in to manageable zones.
As far a resources, Route Reflectors will likely consume more since all the peerings come to a handful of routers whereas confederations aren’t centralized and each router that peers in a confederation takes on the burden of any extra resource usage.
What problem are you trying to solve?