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1. 发明授权

US10333725B2 Overlay network with optimized packet flooding 有权
公开(公告)号：US10333725B2
公开(公告)日：2019-06-25
申请号：US15077978
申请日：2016-03-23
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： Guo Xing He , Shi Xin Ruan , Tamanna Z. Sait , Gang Tang , Ming Shuang Xian , Na Zhu
IPC分类号： H04L12/18 , H04L29/08 , H04L12/46 , G06F9/455 , H04L29/12
摘要： Aspects provide optimized broadcast, unknown unicast, multicast packet (BUM) flooding. A flooding interface list is built for a network virtualization edge structure for an overlay network first virtual machine that includes one or more tunnel interfaces, one for each of a subset of the underlay network virtualization edge structures. In response to receiving a BUM packet from the first virtual machine at the first network virtualization edge structure, an overlay encapsulated packet is generated from the BUM packet and sent out to only those tunnel interfaces listed within the flooding interface list built for the virtual machine, thereby without sending to other network virtualization edge structures that do not have tunnel interfaces listed within the built flooding interface list.

2. 发明授权

US09160618B2 Active IP forwarding in an event driven virtual link aggregation (vLAG) system 有权
标题翻译：事件驱动的虚拟链路聚合（vLAG）系统中的主动IP转发
公开(公告)号：US09160618B2
公开(公告)日：2015-10-13
申请号：US14064014
申请日：2013-10-25
申请人： International Business Machines Corporation
发明人： Yuan WX Li , Tamanna Z. Sait , Naveen C. Sekhara , Venkatesan Selvaraj
IPC分类号： H04L12/28 , H04L12/24 , H04L12/931 , H04L12/939 , H04L12/935
CPC分类号： H04L41/0654 , H04L41/0663 , H04L41/0668 , H04L49/30 , H04L49/552 , H04L49/557 , H04L49/70
摘要： In one embodiment, a method for managing virtual link aggregation (vLAG) includes coupling a first networking switch with a second networking switch using an interswitch link (ISL), wherein the first networking switch is positioned at a boundary between Layer-2 (L2) and Layer-3 (L3), and wherein the second networking switch is positioned at the boundary between L2 and L3; creating a virtual link aggregation (vLAG) comprising connections between the first and second networking switches and an access switch in L2, wherein each networking switch comprises a virtual router redundancy protocol (VRRP) module; and interacting and modifying a VRRP state machine to perform active internet protocol (IP) forwarding when a connection between one of the networking switches and the access switch fails or one of the networking switches does not function properly.
摘要翻译：在一个实施例中，一种用于管理虚拟链路聚合（vLAG）的方法包括：使用交换机间链路（ISL）将第一联网交换机与第二组网交换机相耦合，其中所述第一组网交换机位于层2（L2）和层3（L3），并且其中所述第二联网交换机位于L2和L3之间的边界处; 创建包括所述第一和第二联网交换机之间的连接的虚拟链路聚合（vLAG）和L2中的接入交换机，其中每个联网交换机包括虚拟路由器冗余协议（VRRP）模块; 并且当一个网络交换机和接入交换机之间的连接发生故障或网络交换机之一无法正常工作时，交互和修改VRRP状态机以执行活动的互联网协议（IP）转发。

3. 发明授权

US09106565B2 Loop avoidance for event-driven virtual link aggregation 有权
标题翻译：循环避免事件驱动的虚拟链路聚合
公开(公告)号：US09106565B2
公开(公告)日：2015-08-11
申请号：US13734631
申请日：2013-01-04
申请人： International Business Machines Corporation
发明人： Tamanna Z. Sait , Venkatesan Selvaraj , Shoou J. Yiu , Yi Xia
IPC分类号： G06F15/173 , H04L12/705
CPC分类号： H04L45/18 , H04L41/0668 , H04L47/125 , H04L47/41 , Y02D50/30
摘要： Embodiments of the invention relate to virtual link aggregation. One embodiment includes forming one or more virtual links using physical links connecting a first networking element, a second networking element and a third networking element. A first trigger status indication is used for blocking network traffic for avoiding traffic loops occurring over the one or more virtual links.
摘要翻译：本发明的实施例涉及虚拟链路聚合。一个实施例包括使用连接第一联网元件，第二联网元件和第三网络元件的物理链路来形成一个或多个虚拟链路。第一触发状态指示用于阻止网络流量，以避免在一个或多个虚拟链路上发生的流量环路。

4. 发明授权

US10904137B2 Loop avoidance for event-driven virtual link aggregation 有权
公开(公告)号：US10904137B2
公开(公告)日：2021-01-26
申请号：US16659103
申请日：2019-10-21
申请人： International Business Machines Corporation
发明人： Tamanna Z. Sait , Venkatesan Selvaraj , Shoou J. Yiu , Yi Xia
IPC分类号： H04L12/705 , H04L12/891 , H04L12/803 , H04L12/24
摘要： Embodiments of the invention relate to virtual link aggregation. One embodiment includes forming one or more virtual links using physical links connecting a first networking element, a second networking element and a third networking element. A first trigger status indication is used for blocking network traffic for avoiding traffic loops occurring over the one or more virtual links.

5. 发明授权

US09716616B2 Active IP forwarding in an event driven virtual link aggregation (vLAG) system 有权
公开(公告)号：US09716616B2
公开(公告)日：2017-07-25
申请号：US14832877
申请日：2015-08-21
申请人： International Business Machines Corporation
发明人： Yuan Wx Li , Tamanna Z. Sait , Naveen C. Sekhara , Venkatesan Selvaraj
IPC分类号： H04L12/28 , H04L12/24 , H04L12/931 , H04L12/939 , H04L12/935
CPC分类号： H04L41/0654 , H04L41/0663 , H04L41/0668 , H04L49/30 , H04L49/552 , H04L49/557 , H04L49/70
摘要： In one embodiment, a networking switch includes an interswitch link (ISL) interface configured to communicate with a second networking switch via an ISL and a networking port configured to connect to an access switch in Layer-2 (L2) via a virtual link aggregation (vLAG) with the second networking switch. The networking switch includes a virtual router redundancy protocol (VRRP) module configured to perform active interact protocol (IP) forwarding. Moreover, the VRRP module is configured to indicate a status of the networking switch to the second networking switch via the ISL. The status is one of: initialization when the networking switch is not currently active (INIT), back-up status when the networking switch is acting as a back-up switch (BACK-UP), or master status when the networking switch is acting as a master switch (MASTER). In addition, the networking switch is positioned at a boundary between L2 and Layer-3 (L3).

6. 发明授权

US09577917B2 Loop avoidance for event-driven virtual link aggregation 有权
标题翻译：循环避免事件驱动的虚拟链路聚合
公开(公告)号：US09577917B2
公开(公告)日：2017-02-21
申请号：US14089660
申请日：2013-11-25
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： Tamanna Z. Sait , Venkatesan Selvaraj , Shoou J. Yiu , Yi Xia
IPC分类号： G06F15/173 , H04L12/705 , H04L12/891 , H04L12/803
CPC分类号： H04L45/18 , H04L41/0668 , H04L47/125 , H04L47/41 , Y02D50/30
摘要： Embodiments of the invention relate to virtual link aggregation. One embodiment includes forming one or more virtual links using physical links connecting a first networking element, a second networking element and a third networking element. A first trigger status indication is used for blocking network traffic for avoiding traffic loops occurring over the one or more virtual links.
摘要翻译：本发明的实施例涉及虚拟链路聚合。一个实施例包括使用连接第一联网元件，第二联网元件和第三网络元件的物理链路来形成一个或多个虚拟链路。第一触发状态指示用于阻止网络流量，以避免在一个或多个虚拟链路上发生的流量环路。

7. 发明申请

US20150365270A1 ACTIVE IP FORWARDING IN AN EVENT DRIVEN VIRTUAL LINK AGGREGATION (VLAG) SYSTEM 有权
标题翻译：在虚拟链路聚合（VLAG）系统中的活动IP转发
公开(公告)号：US20150365270A1
公开(公告)日：2015-12-17
申请号：US14832877
申请日：2015-08-21
申请人： International Business Machines Corporation
发明人： Yuan WX Li , Tamanna Z. Sait , Naveen C. Sekhara , Venkatesan Selvaraj
IPC分类号： H04L12/24
CPC分类号： H04L41/0654 , H04L41/0663 , H04L41/0668 , H04L49/30 , H04L49/552 , H04L49/557 , H04L49/70
摘要： In one embodiment, a networking switch includes an interswitch link (ISL) interface configured to communicate with a second networking switch via an ISL and a networking port configured to connect to an access switch in Layer-2 (L2) via a virtual link aggregation (vLAG) with the second networking switch. The networking switch includes a virtual router redundancy protocol (VRRP) module configured to perform active interact protocol (IP) forwarding. Moreover, the VRRP module is configured to indicate a status of the networking switch to the second networking switch via the ISL. The status is one of: initialization when the networking switch is not currently active (INIT), back-up status when the networking switch is acting as a back-up switch (BACK-UP), or master status when the networking switch is acting as a master switch (MASTER). In addition, the networking switch is positioned at a boundary between L2 and Layer-3 (L3).
摘要翻译：在一个实施例中，网络交换机包括交换机间链路（ISL）接口，被配置为经由ISL和第二组网交换机经由虚拟链路聚合（L2）连接到二层（L2）中的接入交换机， vLAG）与第二个网络交换机。网络交换机包括配置为执行主动交互协议（IP）转发的虚拟路由器冗余协议（VRRP）模块。此外，VRRP模块配置为通过ISL向第二组网交换机指示网络交换机的状态。状态是：当网络交换机当前没有活动（INIT）时的初始化，网络交换机充当备用交换机时的后备状态（BACKUP）），或当网络交换机正在运行时的主站状态作为主开关（MASTER）。此外，网络交换机位于L2和L3（L3）之间的边界。

8. 发明申请

US20140195694A1 LOOP AVOIDANCE FOR EVENT-DRIVEN VIRTUAL LINK AGGREGATION 有权
公开(公告)号：US20140195694A1
公开(公告)日：2014-07-10
申请号：US13734631
申请日：2013-01-04
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： Tamanna Z. Sait , Venkatesan Selvaraj , Shoou J. Yiu , Yi Xia
IPC分类号： H04L12/56
CPC分类号： H04L45/18 , H04L41/0668 , H04L47/125 , H04L47/41 , Y02D50/30
摘要： Embodiments of the invention relate to virtual link aggregation. One embodiment includes forming one or more virtual links using physical links connecting a first networking element, a second networking element and a third networking element. A first trigger status indication is used for blocking network traffic for avoiding traffic loops occurring over the one or more virtual links.

9. 发明申请

US20180176176A1 DNS RESOLUTION OF OVERLAPPING DOMAINS IN A MUTLI-TENANT COMPUTING ENVIRONMENT 审中-公开
公开(公告)号：US20180176176A1
公开(公告)日：2018-06-21
申请号：US15386844
申请日：2016-12-21
申请人： International Business Machines Corporation
发明人： Ashish Kapur , Tamanna Z. Sait , Zi Jin Tao , Lu Zhang
IPC分类号： H04L29/12 , H04L29/08
CPC分类号： H04L67/10 , H04L61/1511
摘要： A method and associated systems for a multi-tenant DNS mechanism. A multi-tenant computing environment hosts multiple private overlay networks, each of which comprises one tenant's domain. A multi-tenant DNS agent receives a DNS request to resolve a domain address located within the multi-tenant environment. The agent examines a special record within the request to determine whether the request requires resolving the domain address to an internal tenant-specific network identifier within a tenant's private network. The agent then forwards the request to a DNS server, notifying the server whether the requested address resolution is tenant-specific. If the request is not tenant-specific, the server performs a conventional DNS lookup. But if the request is tenant-specific, the DNS server instead performs a lookup into a tenant-specific local database that allows the domain address to be resolved to an internal address visible only within the multi-tenant computing environment.

10. 发明授权

US09019813B2 Active IP forwarding in an event driven virtual link aggregation (VLAG) system 有权
标题翻译：事件驱动的虚拟链路聚合（VLAG）系统中的主动IP转发
公开(公告)号：US09019813B2
公开(公告)日：2015-04-28
申请号：US13754737
申请日：2013-01-30
申请人： International Business Machines Corporation
发明人： Yuan WX Li , Tamanna Z. Sait , Naveen C. Sekhara , Venkatesan Selvaraj
IPC分类号： H04L12/28 , H04L12/24 , H04L12/931 , H04L12/939 , H04L12/935
CPC分类号： H04L41/0654 , H04L41/0663 , H04L41/0668 , H04L49/30 , H04L49/552 , H04L49/557 , H04L49/70
摘要： In one embodiment, a networking system includes a first networking switch positioned at a boundary between Layer-2 (L2) and Layer-3 (L3), the first networking switch including a first virtual router redundancy protocol (VRRP) module, a second networking switch connected to the first networking switch via an interswitch link (ISL), the second networking switch being positioned at the boundary between L2 and L3 and including a second VRRP module, and an access switch positioned in L2, the access switch being configured to be connected to the first and second networking switches in a virtual link aggregation (vLAG), the first VRRP module being configured to perform active internet protocol (IP) forwarding when the second networking switch is not performing active IP forwarding, and the second VRRP module being configured to perform active IP forwarding when the first networking switch is not performing active IP forwarding.
摘要翻译：在一个实施例中，网络系统包括位于二层（L2）和三层（L3）之间边界的第一网络交换机，第一组网交换机包括第一虚拟路由器冗余协议（VRRP）模块，第二组网交换机通过交换机间连接（ISL）连接到第一组网交换机，第二组网交换机位于L2和L3之间的边界，包括第二VRRP模块和位于L2的接入交换机，接入交换机被配置为连接到虚拟链路聚合（vLAG）中的第一和第二组网交换机，第一VRRP模块被配置为当第二网络交换机不执行主动IP转发时执行活动的互联网协议（IP）转发，第二VRRP模块是配置为在第一个网络交换机未执行主动IP转发时执行主动IP转发。

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