公开(公告)号：US20130094357A1

公开(公告)日：2013-04-18

申请号：US13331626

申请日：2011-12-20

申请人： Ramkumar SANKAR ,  Naveen Pethandlahally Narayan GOWDA

发明人： Ramkumar SANKAR ,  Naveen Pethandlahally Narayan GOWDA

IPC分类号： H04L12/26 ,  H04L12/56

CPC分类号： H04L45/586 ,  H04L45/70 ,  H04L47/125 ,  H04L49/354 ,  H04L49/356 ,  H04L49/70

摘要： Techniques are disclosed for providing n-way gateway load-balancing in a fabric path switching Systems (FSS), such as a layer 2 multipath (L2MP) network in a large data center. An access switch in a L2MP network may learn an emulated switch IDs through FHRP “hello” messages sent by an “active” gateway router for each FHRP group. Further, the access switch may learn which links an emulated switch is reachable over by evaluating link state messages (e.g., IS-IS messages) sent by the gateway routers used to construct the emulated switch. Doing so allows the access switch to learn both the ID of an emulated switch and a set of links over which the emulated switch may be reached, thereby allowing the access switch to load balance traffic to the emulated switch.

摘要翻译： 公开了用于在诸如大型数据中心中的第2层多路径（L2MP）网络的结构路径交换系统（FSS）中提供n路网关负载平衡的技术。 L2MP网络中的接入交换机可以通过每个FHRP组的“活动”网关路由器发送的FHRP“hello”消息来学习仿真交换机ID。 此外，访问交换机可以通过评估由用于构建仿真开关的网关路由器发送的链路状态消息（例如，IS-IS消息）来了解模拟交换机可以到达哪个链路。 这样做允许接入交换机学习仿真交换机的ID和可以到达仿真交换机的一组链路，从而允许接入交换机将流量负载平衡到仿真交换机。

公开(公告)号：US20100189117A1

公开(公告)日：2010-07-29

申请号：US12403337

申请日：2009-03-12

申请人： Naveen Pethandlahally Narayan Gowda ,  Srinivas Sastry ,  Ramkumar Sankar ,  Kiron Haltore ,  Murali Basavaiah ,  Sameer Merchant ,  Sreeram Parameswara Iyer

发明人： Naveen Pethandlahally Narayan Gowda ,  Srinivas Sastry ,  Ramkumar Sankar ,  Kiron Haltore ,  Murali Basavaiah ,  Sameer Merchant ,  Sreeram Parameswara Iyer

IPC分类号： H04L12/56

CPC分类号： H04L12/66 ,  H04L45/22 ,  H04L45/28 ,  H04L45/586

摘要： In one embodiment, a method comprises assigning, by a distributed gateway protocol circuit in a first network switching device, a shared Media Access Control (MAC) address to a shared Internet Protocol (IP) address, the shared MAC address and the shared IP address enabling connected network devices to reach a distributed IP gateway in a network; and sending, by a layer 2 forwarding circuit in the first network switching device, an instruction via a peer data link to a peer layer 2 forwarding circuit in a second network switching device in response to the distributed gateway protocol circuit claiming active control of the distributed IP gateway, the instruction enabling the second network switching device to operate as part of the distributed IP gateway based on concurrent use of the shared MAC address and the shared IP address by the first network switching device and the second network switching device.

摘要翻译： 在一个实施例中，一种方法包括通过第一网络交换设备中的分布式网关协议电路将共享媒体访问控制（MAC）地址分配给共享因特网协议（IP）地址，共享MAC地址和共享IP地址 使连接的网络设备能够到达网络中的分布式IP网关; 并且通过第二网络交换设备中的层2转发电路，响应于所述分布式网关协议电路，通过对等体数据链路发送指向第二网络交换设备中的对等体层2转发电路的指令，声明主动控制分布式 IP网关，使得第二网络交换设备能够基于由第一网络交换设备和第二网络交换设备同时使用共享MAC地址和共享IP地址而作为分布式IP网关的一部分进行操作的指令。

公开(公告)号：US08717888B2

公开(公告)日：2014-05-06

申请号：US13331626

申请日：2011-12-20

申请人： Ramkumar Sankar ,  Naveen Pethandlahally Narayan Gowda

发明人： Ramkumar Sankar ,  Naveen Pethandlahally Narayan Gowda

IPC分类号： H04L12/28

CPC分类号： H04L45/586 ,  H04L45/70 ,  H04L47/125 ,  H04L49/354 ,  H04L49/356 ,  H04L49/70

摘要： Techniques are disclosed for providing n-way gateway load-balancing in a fabric path switching Systems (FSS), such as a layer 2 multipath (L2MP) network in a large data center. An access switch in a L2MP network may learn an emulated switch IDs through FHRP “hello” messages sent by an “active” gateway router for each FHRP group. Further, the access switch may learn which links an emulated switch is reachable over by evaluating link state messages (e.g., IS-IS messages) sent by the gateway routers used to construct the emulated switch. Doing so allows the access switch to learn both the ID of an emulated switch and a set of links over which the emulated switch may be reached, thereby allowing the access switch to load balance traffic to the emulated switch.

摘要翻译： 公开了用于在诸如大型数据中心中的第2层多路径（L2MP）网络的结构路径交换系统（FSS）中提供n路网关负载平衡的技术。 L2MP网络中的接入交换机可以通过每个FHRP组的“活动”网关路由器发送的FHRP“hello”消息来学习仿真交换机ID。 此外，访问交换机可以通过评估由用于构建仿真开关的网关路由器发送的链路状态消息（例如，IS-IS消息）来了解模拟交换机可以到达哪个链路。 这样做允许接入交换机学习仿真交换机的ID和可以到达仿真交换机的一组链路，从而允许接入交换机将流量负载平衡到仿真交换机。

公开(公告)号：US08166187B2

公开(公告)日：2012-04-24

申请号：US12403337

申请日：2009-03-12

申请人： Naveen Pethandlahally Narayan Gowda ,  Srinivas Sastry ,  Ramkumar Sankar ,  Kiron Haltore ,  Murali Basavaiah ,  Sameer Merchant ,  Sreeram Parameswara Iyer

发明人： Naveen Pethandlahally Narayan Gowda ,  Srinivas Sastry ,  Ramkumar Sankar ,  Kiron Haltore ,  Murali Basavaiah ,  Sameer Merchant ,  Sreeram Parameswara Iyer

IPC分类号： H04L12/37

CPC分类号： H04L12/66 ,  H04L45/22 ,  H04L45/28 ,  H04L45/586

摘要： In one embodiment, a method comprises assigning, by a distributed gateway protocol circuit in a first network switching device, a shared Media Access Control (MAC) address to a shared Internet Protocol (IP) address, the shared MAC address and the shared IP address enabling connected network devices to reach a distributed IP gateway in a network; and sending, by a layer 2 forwarding circuit in the first network switching device, an instruction via a peer data link to a peer layer 2 forwarding circuit in a second network switching device in response to the distributed gateway protocol circuit claiming active control of the distributed IP gateway, the instruction enabling the second network switching device to operate as part of the distributed IP gateway based on concurrent use of the shared MAC address and the shared IP address by the first network switching device and the second network switching device.

摘要翻译： 在一个实施例中，一种方法包括通过第一网络交换设备中的分布式网关协议电路将共享媒体访问控制（MAC）地址分配给共享因特网协议（IP）地址，共享MAC地址和共享IP地址 使连接的网络设备能够到达网络中的分布式IP网关; 并且通过第二网络交换设备中的层2转发电路，响应于所述分布式网关协议电路，通过对等体数据链路发送指向第二网络交换设备中的对等体层2转发电路的指令，声明主动控制分布式 IP网关，使得第二网络交换设备能够基于由第一网络交换设备和第二网络交换设备同时使用共享MAC地址和共享IP地址而作为分布式IP网关的一部分进行操作的指令。