公开(公告)号：GB2497846B

公开(公告)日：2016-05-18

申请号：GB201221917

申请日：2012-12-05

Applicant: IBM

Inventor： NIKOLAOS CHRYSOS ,  MIRCEA GUSAT ,  CYRIEL JOHAN MINKENBERG ,  ROLF CLAUBERG ,  FREDY D NEESER ,  DANIEL CRISAN ,  KENNETH M VALK

IPC: H04L47/267 ,  H04L47/30 ,  H04L47/31 ,  H04L47/629 ,  H04L49/111

Abstract: A method for hybrid arrival-occupancy based congestion management includes increasing a recent arrivals counter associated with a data flow from one or more sources in response to receiving a data packet from one of the sources and storing the data packet in a buffer including multiple storage units. The method includes determining if a buffer is congested, randomly selecting an occupied unit of the buffer and determining the source of the packet stored in the occupied unit of the buffer, generating a congestion notification message, sending the congestion notification message to the source of the packet stored in the occupied unit of the buffer if the recent arrivals counter exceeds a threshold value and decreasing the recent arrivals counter associated with the source of the packet stored in the occupied unit of the buffer and discarding the congestion notification message if the recent arrivals counter has a zero value.

公开(公告)号：GB2512808B

公开(公告)日：2017-12-13

申请号：GB201219662

申请日：2011-04-20

Applicant: IBM

Inventor： CASIMER DE CUSATIS ,  MIRCEA GUSAT ,  DANIEL CRISAN ,  CYRIEL JOHAN MINKENBERG

IPC: H04L45/125 ,  H04L45/121 ,  H04L47/765

Abstract: A method to investigate congestion in a computer network may include network devices to route data packets throughout the network. The method includes, for example, sending a probe packet to network devices from a source node to gather information about the traffic queues at each network device that is examined by the probe packet. A routing table at each network device that receives the probe packet is based on the gathered information for respective each traffic queue.

公开(公告)号：GB2495425B

公开(公告)日：2017-05-31

申请号：GB201222689

申请日：2011-05-25

Applicant: IBM

Inventor： FRANCOIS ABEL ,  MIRCEA GUSAT ,  CYRIEL J A MINKENBERG

IPC: G06F15/173 ,  G06F17/50 ,  H04L45/60

Abstract: The invention is directed to a switching device (Sij) adapted to connects parts of a computer interconnection network, having N input ports (Ia-Ih) and N output ports (Oa-Oh), the device adapted for routing data packets by means of direct crosspoints (CPxy), the direct crosspoints configured for enabling direct connectivity between each of the N input ports to a subset m

公开(公告)号：GB2489376B

公开(公告)日：2016-10-26

申请号：GB201212890

申请日：2011-04-20

Applicant: IBM

Inventor： CASIMER DE CUSATIS ,  MIRCEA GUSAT ,  DANIEL CRISAN ,  CYRIEL JOHAN MINKENBERG

IPC: H04L12/46 ,  H04L45/74 ,  H04L47/265

Abstract: A system to manage data congestion in a computer network may include network devices to route data packets throughout the network. The system may also include a source node that sends data packets to any of the network devices. The system may further include a routing table at each network device that is updated by the source node, and the route the data packets are sent by any network device is based upon each respective routing table.

公开(公告)号：GB2515643B

公开(公告)日：2019-10-23

申请号：GB201408988

申请日：2012-12-13

Applicant: IBM

Inventor： CLAUDE BASSO ,  WILLIAM ARMSTRONG ,  CHIH-JEN CHANG ,  MIRCEA GUSAT ,  FREDY NEESER ,  CYRIEL MINKENBERG ,  KENNETH VALK

IPC: H04L12/46 ,  H04L45/50

Abstract: IEEE 802.1Q and Enhanced Transmission Selection provide only eight different traffic classes that may be used to control bandwidth in a particular physical connection (or link). Instead of relying only on these eight traffic classes to manage bandwidth, the embodiments discussed herein disclose using an Enhanced Transmission Selection scheduler that permits a network device to set the bandwidth for an individual virtual LAN. Allocating bandwidth in a port based on a virtual LAN ID permits a network device to allocate bandwidth to, e.g., millions of unique virtual LANs. Thus, this technique may increase the granular control of the network fabric and its performance.

公开(公告)号：GB2525823B

公开(公告)日：2018-02-21

申请号：GB201516051

申请日：2014-01-30

Applicant: IBM

Inventor： KESHAV GOVIND KAMBLE ,  CASIMER M DECUSATIS ,  MIRCEA GUSAT ,  CYRIEL MINKENBERG ,  RENATO RECIO ,  VIJOY A PANDEY

IPC: H04L45/02 ,  H04L45/74

Abstract: In one embodiment, a computer program product includes a computer readable storage medium having program instructions embodied therewith. The embodied program instructions are readable/executable by a processor to receive, by the processor, a packet via a network fabric, the network fabric having a plurality of interconnected fabric switches. The embodied program instructions are also readable/executable by the processor to determine, by the processor, a path through the network fabric by consulting a source-routing table. Moreover, the embodied program instructions are readable/executable by the processor to store, by the processor, source-routing information to a packet header for the packet, the source-routing information including the path. In addition, the embodied program instructions are readable/executable by the processor to send, by the processor, the packet according to an indication in the source-routing information.