公开(公告)号：US20190104066A1

公开(公告)日：2019-04-04

申请号：US15724092

申请日：2017-10-03

Applicant: Cisco Technology, Inc.

Inventor： Venkata Naga Ramesh Ponnapalli ,  Ayan Banerjee ,  Raghava K. Sivaramu ,  Nataraj Bacthu

IPC: H04L12/745 ,  H04L12/721 ,  H04L12/743

Abstract: In one embodiment, longest prefix matching (LPM) operations are performed on a value in multiple interspersed prefix length search spaces to determine an overall longest prefix matching result in a packet switching system. A first LPM lookup unit performs a first LPM operation on the particular lookup value in a first search space finding a first longest matching prefix, and a second LPM lookup unit performs a second LPM operation on the particular lookup value in a second search space finding a second longest matching prefix. The longer of the first and second longest matching prefixes determines the overall LPM. In one embodiment, the first search space and the second search space include non-default route prefixes with interspersed prefix lengths matching a same value, such as, but not limited to the particular lookup value (e.g., a destination address of a packet).

公开(公告)号：US20140140221A1

公开(公告)日：2014-05-22

申请号：US13680503

申请日：2012-11-19

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rajasekhar Manam ,  Venkata Naga Ramesh Ponnapalli ,  Sridar Kandaswamy

IPC: H04L12/24

CPC classification number: H04L41/12 ,  H04L41/0668 ,  H04L41/0886 ,  H04L41/0893 ,  H04L41/5054 ,  H04L49/70

Abstract: Embodiments generally provide techniques for mapping service modules on a network device. Embodiments identify a plurality of service modules, each configured to perform a respective service. A first one of the plurality of service modules is mapped to a first one of a plurality of virtual switches on the network device. Service policy information for a plurality of virtual switches is retrieved. The service policy information is indicative of service requirements for each of the plurality of virtual switches. Upon detecting an occurrence of a predefined event, embodiments determine a second one of the plurality of virtual switches to map the first service module to, based on the service policy information. The first service module is then mapped to the second virtual switch.

Abstract translation: 实施例通常提供用于在网络设备上映射服务模块的技术。 实施例识别多个服务模块，每个服务模块被配置为执行相应的服务。 多个服务模块中的第一个被映射到网络设备上的多个虚拟交换机中的第一个。 检索多个虚拟交换机的服务策略信息。 服务策略信息指示多个虚拟交换机中的每一个的服务需求。 在检测到预定事件的发生时，实施例基于服务策略信息确定多个虚拟交换机中的第二虚拟交换机，以将第一服务模块映射到该第一服务模块。 然后将第一个服务模块映射到第二个虚拟交换机。

公开(公告)号：US10250504B1

公开(公告)日：2019-04-02

申请号：US15724092

申请日：2017-10-03

Applicant: Cisco Technology, Inc.

Inventor： Venkata Naga Ramesh Ponnapalli ,  Ayan Banerjee ,  Raghava K Sivaramu ,  Nataraj Bacthu

IPC: H04L12/745 ,  H04L12/743 ,  H04L12/721

Abstract: In one embodiment, longest prefix matching (LPM) operations are performed on a value in multiple interspersed prefix length search spaces to determine an overall longest prefix matching result in a packet switching system. A first LPM lookup unit performs a first LPM operation on the particular lookup value in a first search space finding a first longest matching prefix, and a second LPM lookup unit performs a second LPM operation on the particular lookup value in a second search space finding a second longest matching prefix. The longer of the first and second longest matching prefixes determines the overall LPM. In one embodiment, the first search space and the second search space include non-default route prefixes with interspersed prefix lengths matching a same value, such as, but not limited to the particular lookup value (e.g., a destination address of a packet).

公开(公告)号：US09225605B2

公开(公告)日：2015-12-29

申请号：US13680503

申请日：2012-11-19

Applicant: Cisco Technology, Inc.

Inventor： Rajasekhar Manam ,  Venkata Naga Ramesh Ponnapalli ,  Sridar Kandaswamy

IPC: H04L12/24 ,  H04L12/931

CPC classification number: H04L41/12 ,  H04L41/0668 ,  H04L41/0886 ,  H04L41/0893 ,  H04L41/5054 ,  H04L49/70

Abstract: Embodiments generally provide techniques for mapping service modules on a network device. Embodiments identify a plurality of service modules, each configured to perform a respective service. A first one of the plurality of service modules is mapped to a first one of a plurality of virtual switches on the network device. Service policy information for a plurality of virtual switches is retrieved. The service policy information is indicative of service requirements for each of the plurality of virtual switches. Upon detecting an occurrence of a predefined event, embodiments determine a second one of the plurality of virtual switches to map the first service module to, based on the service policy information. The first service module is then mapped to the second virtual switch.

Abstract translation: 实施例通常提供用于在网络设备上映射服务模块的技术。 实施例识别多个服务模块，每个服务模块被配置为执行相应的服务。 多个服务模块中的第一个被映射到网络设备上的多个虚拟交换机中的第一个。 检索多个虚拟交换机的服务策略信息。 服务策略信息指示多个虚拟交换机中的每一个的服务需求。 在检测到预定事件的发生时，实施例基于服务策略信息确定多个虚拟交换机中的第二虚拟交换机，以将第一服务模块映射到该第一服务模块。 然后将第一个服务模块映射到第二个虚拟交换机。