Why might you want to synchronize IGP and BGP convergence by advertising an infinite metric in OSPF or setting the overload bit in IS-IS?
A . to prevent traffic loss when the path from a router to a BGP next hop traverses another router that has not yet learned the path via BGP
B . to prevent BGP from converging faster than IGP, which can cause temporary routing loops in the network
C . to prevent routes which are learned both from IGP and BGP from forming a routing loop
D . to prevent churning between multiple available routes reachable through IGP and BGP
Answer: A