BGP mpls advertise public ip

[Bekzod Fakhriddinov]

Hi guys.    SP--eBGP---routerA--iBGP---L3switch----ospf----routerB----l3mpls---SP2

SP -service provider. In this diagram can i advertise public ip of my routerA  to routerB via internal LAN ? Is there are any hidden difficulties at this case? 

[Reza Sharifi · Accepted solution]

Hi,

You should not need to advertise your public IP segment locally to your internal routers. Your public IP should be advertised from router-a to SP and from router-b to SP2.

HTH