公开(公告)号：US10735221B2

公开(公告)日：2020-08-04

申请号：US15938995

申请日：2018-03-28

申请人： Marvell World Trade Ltd.

发明人： Ilan Mayer-Wolf ,  Ilan Yerushalmi ,  David Melman ,  Tal Mizrahi

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

摘要： 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

申请人： Marvell World Trade Ltd.

发明人： Ilan Yerushalmi ,  David Melman ,  Tal Mizrahi ,  Donald Pannell

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

摘要： 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.

公开(公告)号：US10951523B2

公开(公告)日：2021-03-16

申请号：US15866216

申请日：2018-01-09

申请人： Marvell World Trade Ltd.

发明人： Ilan Yerushalmi ,  David Melman ,  Tal Mizrahi ,  Donald Pannell

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

摘要： 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.