iBGP full mesh
I have question about iBGP full mesh,
To solve BGP split horizen issue, we need to make full mesh all iBGP.
I know that there is route reflector to decrease number of BGP peer.
The question is that why full mesh is default way to solve issue as design?
I think hub and spoke diagram ,means route reflector?, is enough diagram to solve issue.
If we need more fault tolerance it's ok to put 2 hub.
I want to know the reason why iBGP was designed as it needs full mesh as default.