Patent ID: 9014201
Filing Date: 2015-04-21
Classification: H04L

Abstract:
1. A method for supporting traffic routing in a middleware machine environment operating on one or more microprocessors, comprising: using a routing algorithm that includes an up/down turn model to route inter-switch traffic from a source switch to a destination switch in a fat-tree network in the middleware machine environment, wherein the fat-tree network includes a plurality of upper-level switches and a plurality of leaf switches, each leaf switch connected to an end node; determining that the destination switch is unreachable to the inter-switch traffic being routed using the routing algorithm; selecting a particular leaf switch from the plurality of leaf switches as a hub switch; determining that a sibling switch of the hub switch is associated with a routing table that contains a path to the destination switch; setting, on each of the hub switch and the source switch, a path through the sibling switch to the destination switch; and updating a routing table associated with the hub switch with a path that includes the source switch, the destination switch, and the hub switch.