System and method for routing traffic between separate InfiniBand subnets based on fat tree routing

摘要

The system and method can route traffic between separate subnets in a network environment. A router that connects separate subnets, such as an InfiniBand (IB) subnet, can receive a list of destinations to which one or more packets that the router is responsible for. In addition, the router obtains and obtains information about which downstream output port of the router can be used to route one or more packets from one or more switches in at least one subnet A routing table can be constructed based on the information obtained.