Invention Grant
- Patent Title: Delivering multicast frames to aggregated link trunks in a distributed switch
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Application No.: US13420259Application Date: 2012-03-14
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Publication No.: US08811406B2Publication Date: 2014-08-19
- Inventor: Claude Basso , Todd A. Greenfield , Bruce M. Walk
- Applicant: Claude Basso , Todd A. Greenfield , Bruce M. Walk
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Patterson & Sheridan, LLP
- Main IPC: H04L12/28
- IPC: H04L12/28 ; H04L12/54 ; H04J3/14 ; H04W72/00

Abstract:
A distributed switch may include a plurality of sub-switches. These sub-switches may be arranged in a hierarchy that increases the available bandwidth for transmitting multicast data frames across the switch fabric. Moreover, the distributed switch may be compatible with link aggregation where multiple physical connections are grouped together to create an aggregated (logical) link. Link aggregation requires similar data frames to use the same data path when traversing the distributed switch. With a unicast data frame, the sub-switch in the distributed switch that receives the data frame typically identifies the destination port (during a process called link selection) and forwards the data frame to the sub-switch containing that port. However, with multicast data frames, instead of the receiving sub-switch performing link selection to determine the destination port, link selection may be done by a different sub-switch or not done at all.
Public/Granted literature
- US20130242988A1 DELIVERING MULTICAST FRAMES TO AGGREGATED LINK TRUNKS IN A DISTRIBUTED SWITCH Public/Granted day:2013-09-19
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