Patent ID: 11870682
Assignee: MELLANOX TECHNOLOGIES, LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A method for communication, comprising:
partitioning local links in a subnetwork of a packet data network into at least first and second groups;
for each local link that connects a first upper-tier switch to a first lower-tier switch in the subnetwork, defining a corresponding detour route passing through a first local link belonging to the first group from the first upper-tier switch to a second lower-tier switch, and from the second lower-tier switch over a second local link to a second upper-tier switch, and from the second upper-tier switch over a third local link belonging to the second group to the first lower-tier switch; and
upon a failure of the local link connecting the first upper-tier switch to the first lower-tier switch, rerouting data packets arriving from the network at the first upper-tier switch for forwarding over the local link, so that the data packets pass via the corresponding detour route to the first lower-tier switch.