公开(公告)号：US09847925B2

公开(公告)日：2017-12-19

申请号：US14588649

申请日：2015-01-02

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Tal Mizrahi ,  Zvi Leib Shmilovici ,  Gideon Navon

IPC: H04L12/26 ,  H04L12/721 ,  H04L12/709

CPC classification number: H04L43/10 ,  H04L43/0829 ,  H04L43/0876 ,  H04L45/245 ,  H04L45/44

Abstract: Aspects of the disclosure provide a method for collecting distributed counter values in a packet-switched system having multiple distributed packet processors. The method includes receiving a probe packet at a packet processor, storing a counter value corresponding to a flow processed by the packet processor for subsequent delivery to a management controller, and forwarding the probe packet to a next packet processor. The next packet processor stores a counter value of the next packet processor for subsequent delivery to the management controller.

公开(公告)号：US10951523B2

公开(公告)日：2021-03-16

申请号：US15866216

申请日：2018-01-09

Applicant: Marvell World Trade Ltd.

Inventor： Ilan Yerushalmi ,  David Melman ,  Tal Mizrahi ,  Donald Pannell

IPC: H04L12/18 ,  H04L12/46 ,  H04L12/713 ,  H04L12/721 ,  H04L12/741 ,  H04L12/851 ,  H04L12/931 ,  H04L12/933

Abstract: A switching system comprises a controlling switch and a plurality of port extenders. One of the port extenders includes: at least one upstream port; multiple downstream ports; and a forwarding engine. A forwarding database is populated with entries indicating associations between i) respective network addresses corresponding to devices coupled to downstream ports, and ii) respective local downstream ports. The forwarding database excludes entries corresponding to network addresses corresponding to devices coupled to the at least one upstream port. The forwarding engine is configured to: for a first packet received via one of the local downstream ports, and having a destination network address in the forwarding database, forward the first packet to a different local downstream port indicated by the forwarding database. For a second packet received via one of the local downstream ports, and having a destination network address not in the forwarding database, forward the second packet to the at least one upstream port.

公开(公告)号：US09191315B1

公开(公告)日：2015-11-17

申请号：US14107661

申请日：2013-12-16

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Tal Mizrahi ,  Martin White ,  David Melman

IPC: H04L12/28 ,  H04J3/16 ,  H04L12/741

CPC classification number: H04L45/74 ,  H04L45/00 ,  H04L45/66 ,  H04L45/7457

Abstract: An apparatus for forwarding packets includes a packet processing pipeline having a processing unit that processes packets compliant with a recognized communication protocol. A first port coupled to the packet processing pipeline is configured to receive a packet that does not comply with the recognized communication protocol and has a header that conforms to a second communication protocol. A data extraction unit extracts first destination information from the header of the packet and, based on the first destination information, generates second destination information that conforms to the recognized communication protocol. The processing unit determines, based on the second destination information, an egress interface to which the packet is to be forwarded.

Abstract translation: 用于转发分组的装置包括具有处理单元的分组处理流水线，处理单元处理符合识别的通信协议的分组。 耦合到分组处理流水线的第一端口被配置为接收不符合所识别的通信协议的分组，并具有符合第二通信协议的报头。 数据提取单元从分组的头部提取第一目的地信息，并且基于第一目的地信息，生成符合所识别的通信协议的第二目的地信息。 处理单元基于第二目的地信息确定要转发分组的出口接口。

公开(公告)号：US09876719B2

公开(公告)日：2018-01-23

申请号：US15061755

申请日：2016-03-04

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Yoram Revah ,  David Melman ,  Tal Mizrahi ,  Rami Zemach ,  Carmi Arad

IPC: H04L12/26 ,  H04L12/743 ,  H04L12/741 ,  H04L12/707 ,  H04L12/709 ,  H04L12/703 ,  H04L12/803

CPC classification number: H04L45/7453 ,  H04L45/22 ,  H04L45/245 ,  H04L45/28 ,  H04L45/745 ,  H04L47/125

Abstract: A forwarding engine in a network device selects one or more groups of multiple egress interfaces of the network device for forwarding packets received by the network device. An egress interface selector in the network device selects individual egress interfaces within the one or more groups selected by the forwarding engine. The egress interface selector includes a table associated with a first group of multiple egress interfaces, wherein elements in the table include values indicate individual egress interfaces in the first group. When the forwarding engine selects the first group, a table element selector of selects an element in the table to identify the individual egress interface for forwarding the packet.

公开(公告)号：US10651974B2

公开(公告)日：2020-05-12

申请号：US15900470

申请日：2018-02-20

Applicant: Marvell World Trade Ltd.

Inventor： Tal Mizrahi

IPC: H04L1/00 ,  G06F11/10 ,  H04L29/06

Abstract: A network device receives a packet having i) a first field that is to be updated by the network device, and ii) a second field that includes current error detection information corresponding to content of the packet, the content including the first field. The network device determines an update value that is to be added to a current value of the first field to generate a new value of the first field. The network device generates new error detection information using the current error detection information and the update value, and without using the current value of the first field. The network device modifies the second field to include the new error detection information, and modifies the first field to include the new value.

公开(公告)号：US10735221B2

公开(公告)日：2020-08-04

申请号：US15938995

申请日：2018-03-28

Applicant: Marvell World Trade Ltd.

Inventor： Ilan Mayer-Wolf ,  Ilan Yerushalmi ,  David Melman ,  Tal Mizrahi

IPC: H04L12/28 ,  H04L12/46 ,  H04L12/701 ,  H04L12/723 ,  H04L12/743 ,  H04L12/935 ,  H04L29/06

Abstract: A packet type corresponding to a packet received by a network device is determined. Based on the packet type, one or more header fields to be extracted from a header of the packet are identified. Identifying the one or more header fields includes extracting, from a memory based on the packet type, respective indicators of locations of the one or more header fields and respective indicators of sizes of the one or more header fields. The one or more identified header fields from the header of the packet, based on the respective indicators of locations of the one or more header fields and respective indicators of sizes of the one or more header fields. The packet is then processed based on the one or more header fields extracted from the header. The processing includes deter mining at least one port to which to forward the packet.

公开(公告)号：US10469382B2

公开(公告)日：2019-11-05

申请号：US15878961

申请日：2018-01-24

Applicant: Marvell World Trade Ltd.

Inventor： Ilan Yerushalmi ,  David Melman ,  Tal Mizrahi ,  Donald Pannell

IPC: H04L12/741 ,  H04L12/851 ,  H04L12/18 ,  H04L12/933 ,  H04L12/713 ,  H04L12/931 ,  H04L12/46 ,  H04L12/721

Abstract: A switching system comprises a controlling switch and multiple port extenders. The controlling switch includes: a plurality of controlling switch ports; and a first packet processor having a first forwarding engine. The first forwarding engine is configured to forward packets received at any controlling switch port to any other controlling switch port. Each of at least some multiple port extenders includes: at least one local upstream port coupled to the controlling switch directly or via another port extender; a plurality of local downstream ports; and a second packet processor having a second forwarding engine and a forwarding database. The second forwarding engine is configured to forward packets i) received at the downstream ports, and ii) for which the forwarding database does not include forwarding information, only to the at least one upstream port. The second packet processor has reduced functionality as compared to the first packet processor.