1. A method, comprising: apportioning a monolithic routing topology of nodes in a computer network into a plurality of regional topology domains, each represented by a directed acyclic graph (DAG); establishing a super topology domain of the regional topology domains as a super-DAG of intermediate nodes interconnected with leaf nodes and rooted by a master node of the computer network; establishing at least one local topology domain of the regional topology domains as a local-DAG of intermediate nodes interconnected with leaf nodes and rooted by a local root node of the computer network; configuring a super node of the computer network to participate in both the super topology domain as an intermediate node of the super-DAG and the local topology domain as the local root node of the local-DAG; creating a topology-connecting fabric between the super node and master node to interconnect the local topology domain with the super topology domain; and utilizing the topology-connecting fabric to enable the master node to globally manage the monolithic routing topology including the plurality of regional topology domains.