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    SERVICE DEPLOYMENT FOR DATA NETWORKS
    1.
    发明专利
    SERVICE DEPLOYMENT FOR DATA NETWORKS 审中-公开

    公开(公告)号：JP2002237835A

    公开(公告)日：2002-08-23

    申请号：JP2001256093

    申请日：2001-08-27

    Applicant: IBM

    Inventor： HAAS ROBERT ,  DROZ PATRICK

    IPC: H04L12/56 ,  G06F13/00 ,  H04L12/16 ,  H04L12/24 ,  H04L12/28

    Abstract: PROBLEM TO BE SOLVED: To provide a method of deploying a service according to a service assigning policy in a data network including a plurality of network nodes. SOLUTION: According to an assigning policy, the selection of nodes is specified for deployment of a service. This method comprises a step of defining a service deployment hierarchy having a lowermost layer including network nodes and one or a plurality of gradually elevating layers where a group of nodes in the preceding layer are expressed by their respective logical nodes in each layer. The method comprises a step of generating a service distribution command for designating a service to be deployed. The service distribution command is supplied, together with the assigning policy, from a logical node of an upper layer of the hierarchy to a lower layer of the hierarchy or each lower layer. The service designated by the service distribution command is automatically introduced to network nodes selected according to the assigning policy.

    LOAD BALANCING IN DATA NETWORKS
    2.
    发明专利
    LOAD BALANCING IN DATA NETWORKS 未知

    公开(公告)号：AU2003232413A1

    公开(公告)日：2004-01-06

    申请号：AU2003232413

    申请日：2003-06-20

    Applicant: IBM

    Inventor： KENCL LUKAS ,  METZLER BERNHARD ,  BOWEN HOYT EDWIN JR ,  DROZ PATRICK

    IPC: H04L45/24 ,  H04L47/30 ,  H04L29/06 ,  H04L12/56

    Abstract: Load balancing apparatus for a data communications network comprises hash logic for computing a hash function on incoming data packets. A threshold detector is connected to the hash logic for triggering, in response to utilization of the downstream objects exceeding a predefined threshold, redefinition in the hash logic of parameters of the hash function from a first set of parameters to a second set of parameters for redistributing the data packets amongst the downstream objects. In use, the hash logic, directs the packets for routing to downstream objects in the network via a first routing path based on a hash computation using the first set of parameters, and, if the threshold is exceeded, selectively directs the packets to one of the first routing path and a second routing path in dependence on separate hash computations using the first and the second sets of parameters for subsequent routing of the packets via the selected one of the first and second routing paths based on the results of one of the separate hash computations.

    LOAD BALANCING IN DATA NETWORKS
    4.
    发明申请
    LOAD BALANCING IN DATA NETWORKS 审中-公开
    数据网络中的负载平衡

    公开(公告)号：WO2004002109A8

    公开(公告)日：2004-03-18

    申请号：PCT/IB0302409

    申请日：2003-06-20

    Applicant: IBM ,  BOWEN HOYT EDWIN JR ,  DROZ PATRICK ,  KENCL LUKAS ,  METZLER BERNHARD

    Inventor： BOWEN HOYT EDWIN JR ,  DROZ PATRICK ,  KENCL LUKAS ,  METZLER BERNHARD

    IPC: H04L12/701 ,  H04L12/707 ,  H04L12/721 ,  H04L12/801 ,  H04L12/803 ,  H04L12/835 ,  H04L29/06 ,  H04L29/08 ,  H04L12/56

    CPC classification number: H04L29/06 ,  H04L45/00 ,  H04L45/123 ,  H04L45/22 ,  H04L45/24 ,  H04L45/38 ,  H04L47/10 ,  H04L47/11 ,  H04L47/125 ,  H04L47/17 ,  H04L47/30 ,  H04L67/1002 ,  H04L67/1008 ,  H04L67/1012 ,  H04L67/1023 ,  H04L67/1029 ,  H04L2029/06054

    Abstract: Load balancing apparatus for a data communications network comprises hash logic for computing a hash function on incoming data packets. A threshold detector is connected to the hash logic for triggering, in response to utilization of the downstream objects exceeding a predefined threshold, redefinition in the hash logic of parameters of the hash function from a first set of parameters to a second set of parameters for redistributing the data packets amongst the downstream objects. In use, the hash logic, directs the packets for routing to downstream objects in the network via a first routing path based on a hash computation using the first set of parameters, and, if the threshold is exceeded, selectively directs the packets to one of the first routing path and a second routing path in dependence on separate hash computations using the first and the second sets of parameters for subsequent routing of the packets via the selected one of the first and second routing paths based on the results of one of the separate hash computations.

    Abstract translation: 用于数据通信网络的负载平衡装置包括用于计算输入数据分组的散列函数的散列逻辑。 阈值检测器连接到散列逻辑，用于响应于超过预定阈值的下游对象的利用而触发哈希函数的参数的哈希逻辑中的重新定义，从第一组参数到第二组参数重新分配 下游对象之间的数据包。 在使用中，散列逻辑基于使用第一组参数的散列计算，经由第一路由路径引导用于路由到网络中的下游对象的分组，并且如果超过阈值，则选择性地将分组引导到 第一路由路径和第二路由路径，其依赖于使用第一和第二参数集合的单独的哈希计算，用于经由所选择的第一路由路径和第二路由路径中的所选择的路由之后的路由，基于分离的一个 哈希计算。

    6.
    发明专利
    未知

    公开(公告)号：DE69739800D1

    公开(公告)日：2010-04-22

    申请号：DE69739800

    申请日：1997-07-17

    Applicant: IBM

    Inventor： DROZ PATRICK ,  GOREN GILAD ,  ILIADIS ILIAS

    IPC: H04Q11/04 ,  H04L45/02 ,  H04L49/111

    Abstract: A method is described for sending frames of data from at least two sending nodes via one or more forwarding nodes to one receiving node in an ATM network. Each frame of data is partitioned into cells and includes a VPI field and a VCI field. The sending nodes include a first label into the VPI field of each of the cells representing an identification of the routing of the cell. Furthermore, the sending nodes include a second label into the VCI field of each of the cells representing an identification of the source of the cell. The forwarding node swaps the first and the second label according to a swapping table. With respect to the second label, the forwarding node enters the swapping table in the column of the output labels and reads the corresponding input label.

    7.
    发明专利
    未知

    公开(公告)号：DE60313037D1

    公开(公告)日：2007-05-16

    申请号：DE60313037

    申请日：2003-10-30

    Applicant: IBM

    Inventor： BOWEN ED ,  DROZ PATRICK ,  JEFFRIES CLARK D ,  KENCL LUKAS ,  KIND ANDREAS ,  PLETKA ROMAN A ,  MANNAL SOENKE

    IPC: H04L12/56

    Abstract: Methods and apparatus are provided for controlling flow rates of a plurality of data packet flows into a queue 4 corresponding to a resource 3 of a network device 1 . The flows comprise a set 7 of non-responsive flows, and a set 8 of other flows which may comprise responsive flows and/or flows whose responsiveness is unknown. The flow rates are managed in accordance with a queue management scheme such that adjustments are made to each flow rate in dependence on excess bandwidth in the resource, the amounts of the adjustments being dependent on one or more adjustment parameters for each flow. An error signal is generated based on the deviation from a desired allocation ratio of the ratio of the total flow rates into the queue 4 for the sets of flows 7, 8 . At least one adjustment parameter for at least one flow is then varied in dependence on the error signal in such a manner as to reduce the aforementioned deviation. A closed-loop control scheme thus operates in conjunction with the underlying queue management scheme to promote fair bandwidth allocation even in the presence of a mix of responsive and non-responsive flows.

    8.
    发明专利
    未知

    公开(公告)号：DE60303384T2

    公开(公告)日：2006-08-17

    申请号：DE60303384

    申请日：2003-06-20

    Applicant: IBM

    Inventor： BOWEN EDWIN ,  DROZ PATRICK ,  KENCL LUKAS ,  METZLER BERNHARD

    IPC: H04L45/24 ,  H04L47/30

    Abstract: Load balancing apparatus for a data communications network comprises hash logic for computing a hash function on incoming data packets. A threshold detector is connected to the hash logic for triggering, in response to utilization of the downstream objects exceeding a predefined threshold, redefinition in the hash logic of parameters of the hash function from a first set of parameters to a second set of parameters for redistributing the data packets amongst the downstream objects. In use, the hash logic, directs the packets for routing to downstream objects in the network via a first routing path based on a hash computation using the first set of parameters, and, if the threshold is exceeded, selectively directs the packets to one of the first routing path and a second routing path in dependence on separate hash computations using the first and the second sets of parameters for subsequent routing of the packets via the selected one of the first and second routing paths based on the results of one of the separate hash computations.

    9.
    发明专利
    未知

    公开(公告)号：AT358938T

    公开(公告)日：2007-04-15

    申请号：AT03758477

    申请日：2003-10-30

    Applicant: IBM

    Inventor： BOWEN ED ,  DROZ PATRICK ,  JEFFRIES CLARK D ,  KENCL LUKAS ,  KIND ANDREAS ,  PLETKA ROMAN A ,  MANNAL SOENKE

    IPC: H04L12/56

    Abstract: Methods and apparatus are provided for controlling flow rates of a plurality of data packet flows into a queue 4 corresponding to a resource 3 of a network device 1 . The flows comprise a set 7 of non-responsive flows, and a set 8 of other flows which may comprise responsive flows and/or flows whose responsiveness is unknown. The flow rates are managed in accordance with a queue management scheme such that adjustments are made to each flow rate in dependence on excess bandwidth in the resource, the amounts of the adjustments being dependent on one or more adjustment parameters for each flow. An error signal is generated based on the deviation from a desired allocation ratio of the ratio of the total flow rates into the queue 4 for the sets of flows 7, 8 . At least one adjustment parameter for at least one flow is then varied in dependence on the error signal in such a manner as to reduce the aforementioned deviation. A closed-loop control scheme thus operates in conjunction with the underlying queue management scheme to promote fair bandwidth allocation even in the presence of a mix of responsive and non-responsive flows.

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