System and method for supporting sub-subnet in an infiniband (IB) network

摘要

A system and method can support multiple domains in an InfiniBand (IB) fabric. The IB fabric can include one or more subnets, wherein each said subnet contains one or more switch nodes. Additionally, at least one said subnet can be divided into one or more sub-subnets, wherein each said sub-subnet is managed by a separate sub-subnet manager that is associated with a unique management key, and wherein said one or more sub-subnets are connected by one or more sub-subnet gateway switch nodes, wherein each sub-subnet gateway switch node belongs to one sub-subnet.

主权项

1. A system for supporting multiple domains in an InfiniBand (IB) fabric, comprising:
an inter-domain discovery and routing engine (ISDR) that is responsible for establishing a global fabric view and establishing a deadlock free routing with one or more paths between different end-ports in the IB fabric wherein the ISDR operates in either a fixed-route mode or an on-demand-route mode, and wherein,
in the fixed-route mode, the ISDR analyzes the topology, and determines if a suitable routing engine exists, andin the on-demand-route mode, the ISDR does not establish a routing until a request for a path between two end points is received; one or more subnets, wherein each said subnet contains one or more switch nodes, wherein at least one said subnet is adapted to be divided into one or more sub-subnets, wherein each said sub-subnet is managed by a separate sub-subnet manager that is associated with a unique management key, and wherein said one or more sub-subnets are connected by one or more sub-subnet gateway switch nodes, wherein each sub-subnet gateway switch node belongs to one sub-subnet.