Hi dears,I would like a help with the architecture displayed below. Please feel free to make any comment.Network descriptions and requirements- It's a metro network that have the goal to connect several locations;- It's works like a big intranet, then there's no need the traffic isolation (VPN L3);- Today, the network runs OSPF and have about 91 areas and 200 routers;- The Img01 attached shows a network summary. Each router has at least to another two routers connected;- The customer router has two connections too;- The backbone routers are connected to POP routers, but there are customer routers directly connected too;- The POP routers connected to backbone routers are part of Area 0. They are connected in another POPs and to customers too.Reasons to implement MPLS- Traffic Engineer- VPWS and VPLS;- QoS and better resource utilization;- The Img02 attached shows the scenario wanted;Notes:- There're no plan to use VPN to isolate some customer traffic because one network requirement is connect all customer via L3 . Is it worth implementing BGP?- I think that implement iBGP will increase the network complexity.Thanks in advance for all!