公开(公告)号：CA2095891C

公开(公告)日：1998-11-10

申请号：CA2095891

申请日：1993-05-10

Applicant: IBM

Inventor： CIDON ISRAEL ,  DONEY RICHARD M ,  DRAKE JOHN ELLIS JR ,  HERVATIC ELIZABETH ANNE ,  POTTER KENNETH HARVEY JR ,  TEDIJANTO THEODORE ERNEST

IPC: H04L12/56 ,  H04L12/64 ,  H04L29/06 ,  H04L29/08

Abstract: A protocol is defined for mixed data/voice/multimedia communications systems to transmit and receive high-priority, real-time traffic over low-speed digital com munication links by embedding such high priority traffic in low priority, non-real-time tra ffic. High priority, real-time packets are thus transmitted without delay by preempting low -priority packets. Low priority, non real-time packets are held during preemption, and low priority transmission is automatically resumed after transmission of high priori ty packets has been completed. A protocol is defined for communications systems to exchange information, at the time that a communication link is activated, defining their link capabilities for handling high priority, real-time packets and to agree on how t his high priority traffic will be transmitted on the communication link.

公开(公告)号：AT210907T

公开(公告)日：2001-12-15

申请号：AT93480067

申请日：1993-06-03

Applicant: IBM

Inventor： DERBY JEFFREY HASKELL ,  DRAKE JOHN ELLIS JR ,  DUDLEY JOHN GARY ,  HERVATIC ELIZABETH ANNE ,  JANNIELLO JAMES PATRICK ,  KAPLAN MARC ADAM ,  KESNER BARRY ,  KOPERDA FRANCIS RICHARD ,  PETERS MARCIA LAMBERT ,  POTTER KENNETH HARVEY JR ,  TSIGLER ANDREY LEV ,  MARIN GERALD ARNOLD ,  GOPAL INDER SARAT ,  CIDON ISRAEL

IPC: H04L12/18 ,  H04L12/56 ,  H04Q11/04

公开(公告)号：AT183349T

公开(公告)日：1999-08-15

申请号：AT93480059

申请日：1993-05-19

Applicant: IBM

Inventor： CIDON ISRAEL ,  DAVENPORT DAVID WILLIAM ,  DERBY JEFFREY HASKELL ,  DUDLEY JOHN GARY ,  GOPAL INDER SARAT ,  JANNIELLO JAMES PATRICK ,  KAPLAN MARC ADAM ,  KOPERDA FRANK RICHARD ,  POTTER KENNETH HARVEY JR ,  KUTTEN SHAY

IPC: H04L12/18 ,  H04L12/56

Abstract: A packet communications system provides for point-to-point packet routing and broadcast packet routing to limited subsets of nodes in the network, using a routing field in the packet header which is processed according to two different protocols. A third protocol is provided in which a packet can be broadcast to the limited subset even when launched from a node which is not a member of the subset. The routing field includes a first portion which contains the route labels necessary to deliver the packet to the broadcast subset. A second portion of the routing field contains the broadcast subset identifier which can then be used to deliver the packet to all of the members of the broadcast subset. Provision is made to backtrack deliver the packet to the last node identified before the broadcast subset if that last node is itself a member of the subset.

公开(公告)号：AU654930B2

公开(公告)日：1994-11-24

申请号：AU3838993

申请日：1993-05-06

Applicant: IBM

Inventor： CIDON ISRAEL ,  DAVENPORT DAVID WILLIAM ,  DERBY JEFFREY HASKELL ,  DUDLEY JOHN GARY ,  GOPAL INDER SARAT ,  JANNIELLO JAMES PATRICK ,  KAPLAN MARC ADAM ,  KOPERDA FRANCIS RICHARD ,  KUTTEN SHAY ,  POTTER KENNETH HARVEY JR

IPC: H04L12/18 ,  H04L12/56

Abstract: A packet communications system provides for point-to-point packet routing and broadcast packet routing to limited subsets of nodes in the network, using a routing field in the packet header which is processed according to two different protocols. A third protocol is provided in which a packet can be broadcast to the limited subset even when launched from a node which is not a member of the subset. The routing field includes a first portion which contains the route labels necessary to deliver the packet to the broadcast subset. A second portion of the routing field contains the broadcast subset identifier which can then be used to deliver the packet to all of the members of the broadcast subset. Provision is made to backtrack deliver the packet to the last node identified before the broadcast subset if that last node is itself a member of the subset.

公开(公告)号：AU3838993A

公开(公告)日：1993-12-23

申请号：AU3838993

申请日：1993-05-06

Applicant: IBM

Inventor： CIDON ISRAEL ,  DAVENPORT DAVID WILLIAM ,  DERBY JEFFREY HASKELL ,  DUDLEY JOHN GARY ,  GOPAL INDER SARAT ,  JANNIELLO JAMES PATRICK ,  KAPLAN MARC ADAM ,  KOPERDA FRANCIS RICHARD ,  KUTTEN SHAY ,  POTTER KENNETH HARVEY JR

IPC: H04L12/18 ,  H04L12/56

Abstract: A packet communications system provides for point-to-point packet routing and broadcast packet routing to limited subsets of nodes in the network, using a routing field in the packet header which is processed according to two different protocols. A third protocol is provided in which a packet can be broadcast to the limited subset even when launched from a node which is not a member of the subset. The routing field includes a first portion which contains the route labels necessary to deliver the packet to the broadcast subset. A second portion of the routing field contains the broadcast subset identifier which can then be used to deliver the packet to all of the members of the broadcast subset. Provision is made to backtrack deliver the packet to the last node identified before the broadcast subset if that last node is itself a member of the subset.