公开(公告)号：US10374952B2

公开(公告)日：2019-08-06

申请号：US15792615

申请日：2017-10-24

Applicant: Cisco Technology, Inc.

Inventor： Ayan Banerjee ,  Sameer Merchant ,  Ramana Mellacheruvu ,  Ramesh V. N. Ponnapalli ,  Srinivasan Ramabadran

IPC: H04L12/745 ,  H04L12/741 ,  H04L12/58 ,  H04W28/12 ,  H04W72/00 ,  H04L12/721 ,  H04L12/801 ,  H04L12/761

Abstract: Various embodiments are disclosed for increasing Layer-3 LPM (longest prefix match) routing database in a network platform. In some embodiments, chipsets in fabric modules (FMs) can be partitioned into multiple banks. Network traffic can be directed towards a corresponding bank in the FMs by using a LPM table on a line card (LC). Entries in the LPM table on the LC can be programmed either statically or dynamically based upon LPM routes that are dynamically learned.

公开(公告)号：US09825857B2

公开(公告)日：2017-11-21

申请号：US14449007

申请日：2014-07-31

Applicant: Cisco Technology, Inc.

Inventor： Ayan Banerjee ,  Sameer Merchant ,  Ramana Mellacheruvu ,  Ramesh V. N. Ponnapalli ,  Srinivasan Ramabadran

IPC: H04L12/741 ,  H04L12/58 ,  H04W28/12 ,  H04W72/00 ,  H04L12/721 ,  H04L12/801 ,  H04L12/761 ,  H04L12/745

CPC classification number: H04L45/745 ,  H04L45/16 ,  H04L45/72 ,  H04L45/748 ,  H04L47/33 ,  H04L51/10 ,  H04W28/12 ,  H04W72/005

Abstract: Various embodiments are disclosed for increasing Layer-3 LPM (longest prefix match) routing database in a network platform. In some embodiments, chipsets in fabric modules (FMs) can be partitioned into multiple banks. Network traffic can be directed towards a corresponding bank in the FMs by using a LPM table on a line card (LC). Entries in the LPM table on the LC can be programmed either statically or dynamically based upon LPM routes that are dynamically learned.

公开(公告)号：US09258255B2

公开(公告)日：2016-02-09

申请号：US14276628

申请日：2014-05-13

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ayan Banerjee ,  Ramesh V. N. Ponnapalli

IPC: H04L12/931 ,  H04L29/12

CPC classification number: H04L49/602 ,  H04L49/3009 ,  H04L61/251 ,  H04L61/2542 ,  H04L61/6004 ,  H04L61/6022 ,  H04L61/6059 ,  H04L61/6086

Abstract: An example method for hierarchical programming of dual-stack switches in a network environment is provided and includes receiving packets from the network at a line card in the modular switch, a first portion of the packets being destined to Internet Protocol version 6 (IPv6) destination IP (DIP) addresses and a second portion of the packets being destined to IPv4 DIP addresses, and performing hierarchical lookups of the IPv6 DIP addresses and the IPv4 DIP addresses. Layer 3 (L3) lookups for the IPv6 DIP addresses are performed at the line card, and L3 lookups for IPv4 DIP addresses are performed at a fabric module in the modular switch. The line card and the fabric module are interconnected inside a chassis of the modular switch. In specific embodiments, the method further comprises inspecting the packets' destination Media Access Control (DMAC) addresses comprising router MAC addresses indicative of IPv6 or IPv4 address families.

Abstract translation: 提供了一种用于网络环境中的双栈交换机的分级编程的示例方法，包括在模块交换机的线路卡处从网络接收分组，分组的第一部分目的地是互联网协议版本6（IPv6）目的地 IP（DIP）地址，第二部分数据包目的地为IPv4 DIP地址，并执行IPv6 DIP地址和IPv4 DIP地址的分层查询。 在线卡上执行IPv6 DIP地址的第3层（L3）查找，并且在模块交换机的结构模块中执行IPv4 DIP地址的L3查找。 线卡和织物模块在模块化开关的机箱内互连。 在具体实施例中，该方法还包括检查包括指示IPv6或IPv4地址族的路由器MAC地址的分组的目的地媒体访问控制（DMAC）地址。

公开(公告)号：US20150295862A1

公开(公告)日：2015-10-15

申请号：US14276628

申请日：2014-05-13

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ayan Banerjee ,  Ramesh V. N. Ponnapalli

IPC: H04L12/931 ,  H04L29/12

CPC classification number: H04L49/602 ,  H04L49/3009 ,  H04L61/251 ,  H04L61/2542 ,  H04L61/6004 ,  H04L61/6022 ,  H04L61/6059 ,  H04L61/6086

Abstract: An example method for hierarchical programming of dual-stack switches in a network environment is provided and includes receiving packets from the network at a line card in the modular switch, a first portion of the packets being destined to Internet Protocol version 6 (IPv6) destination IP (DIP) addresses and a second portion of the packets being destined to IPv4 DIP addresses, and performing hierarchical lookups of the IPv6 DIP addresses and the IPv4 DIP addresses. Layer 3 (L3) lookups for the IPv6 DIP addresses are performed at the line card, and L3 lookups for IPv4 DIP addresses are performed at a fabric module in the modular switch. The line card and the fabric module are interconnected inside a chassis of the modular switch. In specific embodiments, the method further comprises inspecting the packets' destination Media Access Control (DMAC) addresses comprising router MAC addresses indicative of IPv6 or IPv4 address families.

Abstract translation: 提供了一种用于网络环境中的双栈交换机的分级编程的示例方法，包括在模块交换机中的线卡处从网络接收分组，分组的第一部分目的地为因特网协议版本6（IPv6）目的地 IP（DIP）地址，第二部分数据包目的地为IPv4 DIP地址，并执行IPv6 DIP地址和IPv4 DIP地址的分层查询。 在线卡上执行IPv6 DIP地址的第3层（L3）查找，并且在模块交换机的结构模块中执行IPv4 DIP地址的L3查找。 线卡和织物模块在模块化开关的机箱内互连。 在具体实施例中，该方法还包括检查包括指示IPv6或IPv4地址族的路由器MAC地址的分组的目的地媒体访问控制（DMAC）地址。

公开(公告)号：US09148367B2

公开(公告)日：2015-09-29

申请号：US13633716

申请日：2012-10-02

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Sridar Kandaswamy ,  Rajasekhar Manam ,  Ramesh V. N. Ponnapalli

IPC: H04L12/721 ,  H04L29/06

CPC classification number: H04L45/38 ,  H04L69/22

Abstract: A method is provided in one example and includes receiving a first packet of a connection between a client and a server. The first packet is tagged with a tag comprising a member id of a service node in a service cluster that includes a plurality of nodes having distinct member ids. The method can also include mapping the member id to the service node in a tag-to-node map; receiving a second packet of the connection, where the second packet is tagged with the tag comprising the member id; determining the service node from the tag-to-node map; and forwarding the second packet to the service node.

Abstract translation: 在一个示例中提供了一种方法，并且包括接收客户端和服务器之间的连接的第一分组。 第一个分组被标记有包括服务集群中的服务节点的成员ID的标签，该服务集群包括具有不同成员ID的多个节点。 该方法还可以包括将成员标识映射到标签到节点映射中的服务节点; 接收所述连接的第二分组，其中所述第二分组被标签包括所述成员id的所述标签; 从所述标签到节点映射确定所述服务节点; 并将所述第二分组转发到所述服务节点。