公开(公告)号：CA2833681C

公开(公告)日：2019-05-07

申请号：CA2833681

申请日：2012-04-12

Applicant: IBM

Inventor： KAMBLE KESHAV GOVIND ,  PANDEY VIJOY ,  KAMATH DAYAVANTI GOPAL ,  LEU DAR-REN ,  KIDAMBI JAYAKRISHNA ,  MENDON CHANDARANI

IPC: H04L47/6275 ,  H04L45/16 ,  H04L45/42 ,  H04L49/111

Abstract: A switching network includes an upper tier and a lower tier including a plurality of lower tier entities. A master switch in the upper tier, which has a plurality of ports each coupled to a respective lower tier entity, implements on each of the ports a plurality of virtual ports each corresponding to a respective one of a plurality of remote physical interfaces (RPIs) at the lower tier entity coupled to that port. Data traffic communicated between the master switch and RPIs is queued within virtual ports that correspond to the RPIs on lower tier entities with which the data traffic is communicated. The master switch enforces priority-based flow control (PFC) on data traffic of a given virtual port by transmitting, to a lower tier entity on which a corresponding RPI resides, a PFC data frame specifying priorities for at least two different classes of data traffic communicated by the particular RPI.

公开(公告)号：GB2512546B

公开(公告)日：2014-11-19

申请号：GB201412787

申请日：2013-01-17

Applicant: IBM

Inventor： KAMBLE KESHAV GOVIND ,  LEU DAR-REN ,  PANDEY VIJOY A ,  GHOSH NIRAPADA ,  MENDON CHANDARANI

IPC: H04L12/26

公开(公告)号：CA2833681A1

公开(公告)日：2012-11-22

申请号：CA2833681

申请日：2012-04-12

Applicant: IBM

Inventor： KAMBLE KESHAV GOVIND ,  PANDEY VIJOY ,  KAMATH DAYAVANTI GOPAL ,  LEU DAR-REN ,  KIDAMBI JAYAKRISHNA ,  MENDON CHANDARANI

IPC: H04L47/6275 ,  H04L45/16 ,  H04L45/42 ,  H04L49/111

Abstract: A switching network includes an upper tier and a lower tier including a plurality of lower tier entities. A master switch in the upper tier, which has a plurality of ports each coupled to a respective lower tier entity, implements on each of the ports a plurality of virtual ports each corresponding to a respective one of a plurality of remote physical interfaces (RPIs) at the lower tier entity coupled to that port. Data traffic communicated between the master switch and RPIs is queued within virtual ports that correspond to the RPIs on lower tier entities with which the data traffic is communicated. The master switch enforces priority-based flow control (PFC) on data traffic of a given virtual port by transmitting, to a lower tier entity on which a corresponding RPI resides, a PFC data frame specifying priorities for at least two different classes of data traffic communicated by the particular RPI.

公开(公告)号：GB2514051A

公开(公告)日：2014-11-12

申请号：GB201414791

申请日：2013-02-19

Applicant: IBM

Inventor： KAMBLE KESHAV GOVIND ,  PEETHAMBARAM NANDAKUMAR ,  LEU DAR-REN ,  PANDEY VIJOY A ,  GHOSH NIRAPADA ,  ANANTHARAM SUSHMA ,  MENDON CHANDARANI ,  MUKHERJEE NILANJAN

IPC: H04L12/26 ,  H04L12/24 ,  H04L12/70

Abstract: A distributed fabric system has distributed line card (DLC) chassis and scaled-out fabric coupler (SFC) chassis. Each DLC chassis includes a network processor and fabric ports. Each network processor of each DLC chassis includes a fabric interface in communication with the DLC fabric ports of that DLC chassis. Each SFC chassis includes a fabric element and fabric ports. A communication link connects each SFC fabric port to one DLC fabric port. Each communication link includes cell-carrying lanes. Each fabric element of each SFC chassis collects per-lane statistics for each SFC fabric port of that SFC chassis. Each SFC chassis includes program code that obtains the per-lane statistics collected by the fabric element chip of that SFC chassis. A network element includes program code that gathers the per-lane statistics collected by each fabric element of each SFC chassis and integrates the statistics into a topology of the entire distributed fabric system.

公开(公告)号：GB2512546A

公开(公告)日：2014-10-01

申请号：GB201412787

申请日：2013-01-17

Applicant: IBM

Inventor： KAMBLE KESHAV GOVIND ,  LEU DAR-REN ,  PANDEY VIJOY A ,  GHOSH NIRAPADA ,  MENDON CHANDARANI

IPC: H04L12/26

Abstract: A distributed fabric system comprises a plurality of independent network elements interconnected by inter-switch links and assigned to a same group. Each network element includes a switching chip, a processor, and memory storing program code that is executed by the processor. The program code of each network element includes a device configuration (DC) stacking module and a switch discovery protocol (SDP) module. The SDP module of each network element, when executed, discovers each other network element in the group and elects one of the network elements as a master network element. The SDP module of the master network element, when executed, sends messages to the DC-stacking module of the master network element. Each sent message identifies one of the network elements in the group. The DC stacking module of the master network element, when executed, maintains a record of all network elements that are currently members in the group.

公开(公告)号：DE112012001320T8

公开(公告)日：2014-01-30

申请号：DE112012001320

申请日：2012-04-12

Applicant: IBM

Inventor： KAMATH DAYAVANTI GOPAL ,  MENDON CHANDARANI ,  LEU DAR-REN ,  KAMBLE KESHAV GOVIND ,  PANDEY VIJOY ,  KIDAMBI JAYAKRISHNA

IPC: H04L47/6275 ,  H04L45/16 ,  H04L45/42 ,  H04L49/111

公开(公告)号：GB2504443A

公开(公告)日：2014-01-29

申请号：GB201320499

申请日：2012-04-12

Applicant: IBM

Inventor： KAMBLE KESHAV GOVIND ,  PANDEY VIJOY ,  KAMATH DAYAVANTI GOPAL ,  LEU DAR-REN ,  KIDAMBI JAYAKRISHNA ,  MENDON CHANDARANI

IPC: H04L47/6275 ,  H04L45/16 ,  H04L45/42 ,  H04L49/111

Abstract: A switching network includes an upper tier and a lower tier including a plurality of lower tier entities. A master switch in the upper tier, which has a plurality of ports each coupled to a respective lower tier entity, implements on each of the ports a plurality of virtual ports each corresponding to a respective one of a plurality of remote physical interfaces (RPIs) at the lower tier entity coupled to that port. Data traffic communicated between the master switch and RPIs is queued within virtual ports that correspond to the RPIs on lower tier entities with which the data traffic is communicated. The master switch enforces priority-based flow control (PFC) on data traffic of a given virtual port by transmitting, to a lower tier entity on which a corresponding RPI resides, a PFC data frame specifying priorities for at least two different classes of data traffic communicated by the particular RPI.