公开(公告)号：WO2006036436A2

公开(公告)日：2006-04-06

申请号：PCT/US2005/030916

申请日：2005-08-31

Applicant: CISCO TECHNOLOGY, INC. ,  FEDORKOW, Guy C. ,  POTTER, Kenneth H. ,  GUSTLIN, Mark A. ,  KAPPLER, Christopher J. ,  OLSEN, Robert T.

Inventor： FEDORKOW, Guy C. ,  POTTER, Kenneth H. ,  GUSTLIN, Mark A. ,  KAPPLER, Christopher J. ,  OLSEN, Robert T.

IPC: H04L12/56

CPC classification number: H04L47/10 ,  H04L12/5601 ,  H04L47/266 ,  H04L2012/562 ,  H04L2012/5679 ,  H04L2012/5681

Abstract: Presently disclosed is an apparatus and method for returning control of bandwidth allocation and packet scheduling to the routing engine in a network communications device containing an ATM interface. Virtual circuit (VC) flow control is augmented by the addition of a second flow control feedback signal from each virtual path (VP). VP flow control is used to suspend scheduling of all VCs on a given VP when traffic has accumulated on enough VCs to keep the VP busy. A new packet segmenter is employed to segment traffic while preserving the first in, first out (FIFO) order in which packet traffic was received. Embodiments of the invention may be implemented using a two-level (per-VC and per-VP) scheduling hierarchy or may use as many levels of flow control feedback-derived scheduling as may be necessitated by multilevel scheduling hierarchies.

Abstract translation: 现在公开的是一种用于在包含ATM接口的网络通信设备中将带宽分配和分组调度的控制返回到路由引擎的装置和方法。 通过从每个虚拟路径（VP）添加第二流量控制反馈信号来增加虚拟电路（VC）流量控制。 当流量累积在足够的VC上以保持VP忙时，VP流控制用于暂停给定VP上所有VC的调度。 采用新的分组分段器来分段业务，同时保持接收到分组业务的先入先出（FIFO）顺序。 可以使用两级（每VC和每VP）调度层次来实现本发明的实施例，或者可以使用多级调度层次可能需要的流控制反馈导出调度级别。

公开(公告)号：EP1792443A2

公开(公告)日：2007-06-06

申请号：EP05792626.3

申请日：2005-08-31

Applicant: Cisco Technology, Inc.

Inventor： FEDORKOW, Guy C. ,  POTTER, Kenneth H. ,  GUSTLIN, Mark A. ,  KAPPLER, Christopher J. ,  OLSEN, Robert T.

IPC: H04L12/28 ,  H04L12/54

CPC classification number: H04L47/10 ,  H04L12/5601 ,  H04L47/266 ,  H04L2012/562 ,  H04L2012/5679 ,  H04L2012/5681

Abstract: Presently disclosed is an apparatus and method for returning control of bandwidth allocation and packet scheduling to the routing engine in a network communications device containing an ATM interface. Virtual circuit (VC) flow control is augmented by the addition of a second flow control feedback signal from each virtual path (VP). VP flow control is used to suspend scheduling of all VCs on a given VP when traffic has accumulated on enough VCs to keep the VP busy. A new packet segmenter is employed to segment traffic while preserving the first in, first out (FIFO) order in which packet traffic was received. Embodiments of the invention may be implemented using a two-level (per-VC and per-VP) scheduling hierarchy or may use as many levels of flow control feedback-derived scheduling as may be necessitated by multilevel scheduling hierarchies.

公开(公告)号：EP1792443B1

公开(公告)日：2012-02-22

申请号：EP05792626.3

申请日：2005-08-31

Applicant: Cisco Technology, Inc.

Inventor： FEDORKOW, Guy C. ,  POTTER, Kenneth H. ,  GUSTLIN, Mark A. ,  KAPPLER, Christopher J. ,  OLSEN, Robert T.

IPC: H04L12/56

CPC classification number: H04L47/10 ,  H04L12/5601 ,  H04L47/266 ,  H04L2012/562 ,  H04L2012/5679 ,  H04L2012/5681

Abstract: Presently disclosed is an apparatus and method for returning control of bandwidth allocation and packet scheduling to the routing engine in a network communications device containing an ATM interface. Virtual circuit (VC) flow control is augmented by the addition of a second flow control feedback signal from each virtual path (VP). VP flow control is used to suspend scheduling of all VCs on a given VP when traffic has accumulated on enough VCs to keep the VP busy. A new packet segmenter is employed to segment traffic while preserving the first in, first out (FIFO) order in which packet traffic was received. Embodiments of the invention may be implemented using a two-level (per-VC and per-VP) scheduling hierarchy or may use as many levels of flow control feedback-derived scheduling as may be necessitated by multilevel scheduling hierarchies.