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1. 发明申请

US20220103460A1 ON-DEMAND PACKET REDIRECTION 有权
公开(公告)号：US20220103460A1
公开(公告)日：2022-03-31
申请号：US17038555
申请日：2020-09-30
申请人： VMware, Inc.
发明人： Jia YU , Yong WANG , Xinhua HONG , Mochi XUE
IPC分类号： H04L12/721 , H04L12/813 , H04L12/715 , H04L12/729
摘要： The disclosure provides an approach for performance management. Embodiments include receiving, at a port of a router, a transport control protocol (TCP) or user datagram protocol (UDP) packet generated by a performance component of the router. Embodiments include identifying, by the router, a rule related to the TCP or UDP packet. Embodiments include forwarding, by the router, the packet to an interface of a kernel based on the rule. Embodiments include receiving, by the performance component, in response to the TCP or UDP packet, an additional packet from the interface of the kernel. Embodiments include determining, by the performance component, a performance metric based on the TCP or UDP packet and the additional packet.

2. 发明申请

US20210226869A1 OFFLINE CONNECTIVITY CHECKS 有权
公开(公告)号：US20210226869A1
公开(公告)日：2021-07-22
申请号：US16748764
申请日：2020-01-21
申请人： VMware, Inc.
发明人： Sharath BHAT , Yashika NARANG , Xinghua HU , Xinhua HONG , Vinay JAIN , Neeraj DIXIT
IPC分类号： H04L12/26 , H04L12/733 , H04L12/713 , H04L29/12
摘要： One example may comprise a computer system receiving a request to perform an offline connectivity check between a source endpoint and a destination endpoint; and obtaining logical network information associated with a production environment in which multiple logical network elements are deployed. Based on the logical network information, the computer system may identify a logical network path connecting the source endpoint and the destination endpoint and perform an offline traversal of the logical network path outside of the production environment. In response to detecting a connectivity issue during the offline traversal, report information identifying the logical network path and the connectivity issue may be generated.

3. 发明申请

US20210014192A1 ADDRESS RESOLUTION HANDLING AT LOGICAL DISTRIBUTED ROUTERS 有权
公开(公告)号：US20210014192A1
公开(公告)日：2021-01-14
申请号：US16507045
申请日：2019-07-10
申请人： VMware, Inc.
发明人： Jia YU , Xinhua HONG , Yong WANG
IPC分类号： H04L29/12 , H04L12/721 , H04L12/713 , H04L12/741
摘要： Example methods for a network device to perform address resolution handling. The method may comprise: in response to a first distributed router (DR) port of a first DR instance detecting an address resolution request from a second DR port of a second DR instance, generating a modified address resolution request that is addressed from a first address associated with the first DR port instead of a second address associated with the second DR port. The modified address resolution request may be broadcasted within a logical network that is connected to the first DR instance through network extension. The method may also comprise: in response to detecting an address resolution response that includes protocol-to-hardware address mapping information associated with an endpoint located on the logical network, generating and sending a modified address resolution response towards the second DR port of the second DR instance.

4. 发明申请

US20220303231A1 PACKET FRAGMENTATION USING OUTER HEADER 有权
公开(公告)号：US20220303231A1
公开(公告)日：2022-09-22
申请号：US17208608
申请日：2021-03-22
申请人： VMware, Inc.
发明人： Jia YU , Yong WANG , Xinhua HONG , Wenyi JIANG , Guolin YANG , Dexiang WANG
IPC分类号： H04L12/861 , H04L29/06 , H04L12/715 , H04L12/66
摘要： In some embodiments, a method fragments a first packet into a plurality of fragments when a length of an encapsulated first packet is larger than a maximum transmission unit size. For each fragment in the plurality of fragments, fragmentation information is generated. The method encapsulates each fragment in the plurality of fragments with an outer header to form a plurality of encapsulated packets. The respective fragmentation information for each fragment is inserted in a portion of the outer header that is processed by endpoints of an overlay tunnel and not processed by a device along a path of the overlay tunnel. The plurality of encapsulated packets are sent via the overlay tunnel.

5. 发明申请

US20220078109A1 DISAMBIGUATING TRAFFIC IN NETWORKING ENVIRONMENTS WITH MULTIPLE VIRTUAL ROUTING AND FORWARDING (VRF) LOGICAL ROUTERS 有权
公开(公告)号：US20220078109A1
公开(公告)日：2022-03-10
申请号：US17456054
申请日：2021-11-22
申请人： VMware, Inc.
发明人： Xinhua HONG , Yong WANG , Jia YU , Dexiang WANG
IPC分类号： H04L12/713 , H04L12/66 , H04L12/46 , H04L12/931 , H04L12/751 , H04L12/715
摘要： The disclosure provides an approach for routing traffic in a network. Embodiments include receiving, by a service router of an edge services gateway (ESG), a packet comprising a virtual network identifier (VNI) and a virtual local area network (VLAN) identifier. Embodiments include sending, by the service router, the packet to a virtual switch of the ESG based on the VNI of the packet. Embodiments include determining, by the virtual switch, a virtual routing and forwarding (VRF) router of the ESG for the packet based on the VLAN identifier. Embodiments include forwarding, by the virtual switch, the packet to the VRF router.

6. 发明申请

US20220006734A1 ENCAPSULATED FRAGMENTED PACKET HANDLING 有权
公开(公告)号：US20220006734A1
公开(公告)日：2022-01-06
申请号：US16920765
申请日：2020-07-06
申请人： VMware, Inc.
发明人： Yong WANG , Dexiang WANG , Xinhua HONG , Jia YU
IPC分类号： H04L12/713 , H04L12/717 , H04L29/06 , H04L29/08 , H04L12/46 , G06F9/455
摘要： Example methods and computer systems for encapsulated fragmented packet handling. One example may comprise a first computer system detecting an egress packet that requires fragmentation and determining an outer connectionless transport layer value based on content of an inner transport layer header of the egress packet. The first computer system may generate a first encapsulated fragmented packet that includes a first fragment of the inner payload, the inner transport layer header and a first outer header specifying the outer connectionless transport layer value; and a second encapsulated fragmented packet that includes a second fragment of the inner payload and a second outer header specifying the outer connectionless transport layer value. The first encapsulated fragmented packet and the second encapsulated fragmented packet may be forwarded towards a second computer system to cause receive-side processing based on the outer connectionless transport layer value.

7. 发明申请

US20210026721A1 MEMORY LEAK DETECTION 有权
公开(公告)号：US20210026721A1
公开(公告)日：2021-01-28
申请号：US16520318
申请日：2019-07-23
申请人： VMware, Inc.
发明人： Yong WANG , Xinhua HONG , Jia YU , Eduard SERRA MIRALLES
IPC分类号： G06F11/07 , G06F9/455 , H04L12/861
摘要： Example methods and systems for memory leak detection. One example may comprise: identifying a set of memory buffers that are available for storing packet information that requires processing by the network device; a first subset that includes one or more first memory buffers that are unallocated, and a second subset that includes one or more second memory buffers that are allocated and storing packet information that is being processed by the network device. The method may also comprise: performing a comparison between (a) the set of memory buffers and (b) the first subset and the second subset; and based on the comparison, identifying a third subset that includes one or more third memory buffers, being leaked memory buffers, that are storing packet information that is no longer being processed by the network device.

8. 发明申请

US20200236041A1 HOST ROUTER IN A VIRTUAL COMPUTING INSTANCE 审中-公开
公开(公告)号：US20200236041A1
公开(公告)日：2020-07-23
申请号：US16254067
申请日：2019-01-22
申请人： VMware, Inc.
发明人： Jia YU , Xinhua HONG
IPC分类号： H04L12/721 , H04L12/931 , H04L12/46
摘要： The disclosure provides an approach for routing packets to services in a gateway device. The gateway device may be implemented as a virtual computing instance running in a host machine. The gateway device includes a host router configured to route packets to services coupled to ports of the host router in the gateway device based on a destination internet protocol (IP) address of the packets.

9. 发明申请

US20200186412A1 MAC-SYNC BASED MECHANISM FOR BRIDGE PORT FAILOVER 审中-公开
公开(公告)号：US20200186412A1
公开(公告)日：2020-06-11
申请号：US16212379
申请日：2018-12-06
申请人： VMware, Inc.
发明人： Xinhua HONG , Dexiang WANG , Sharath BHAT , Xinghua HU , Jia YU
IPC分类号： H04L12/24 , H04L12/46 , H04L12/18 , H04L12/26
摘要： In an embodiment, a computer-implemented method for a MAC addresses synchronization mechanism for a bridge port failover is disclosed. In an embodiment, the method comprises: upon detecting a failover of a previously active bridge node, a standby bridge node performing: detecting a failover of a previously active bridge node; sending a request to one or more hosts to cause the one or more hosts to remove, from one or more corresponding forwarding tables, one or more MAC addresses, of one or more virtual machines, that the one or more hosts learned based on communications tunnels established with the previously active bridge node; for each MAC address stored in a MAC-SYNC table maintained by the standby bridge node: generating a first-type reverse address resolution protocol (“RARP”) packet having a source MAC address retrieved from the MAC-SYNC table; broadcasting the first RARP message to a virtual extensible LAN (“VXLAN”) switch via a bridge port of the VXLAN switch for the VXLAN switch to register the MAC address on the bridge port; storing an association of the MAC address and an identifier of the bridge port in a forwarding table maintained by the standby bridge node; for each MAC address that is stored in the forwarding table, but not in the MAC-SYNC table: generating a second-type RARP packet with such a MAC address to be the source MAC address; broadcasting the second RARP message from the VXLAN switch to a VLAN switch causing a physical switch to update a forwarding table maintained by the physical switch; and starting to forward traffic, via the bridge port, as an active bridge node.

10. 发明申请

US20220385621A1 ADDRESS RESOLUTION HANDLING AT LOGICAL DISTRIBUTED ROUTERS 有权
公开(公告)号：US20220385621A1
公开(公告)日：2022-12-01
申请号：US17877247
申请日：2022-07-29
申请人： VMware, Inc.
发明人： Jia YU , Xinhua HONG , Yong WANG
IPC分类号： H04L61/103 , H04L45/44 , H04L45/00 , H04L45/745 , H04L45/586
摘要： Example methods for a network device to perform address resolution handling. The method may comprise: in response to a first distributed router (DR) port of a first DR instance detecting an address resolution request from a second DR port of a second DR instance, generating a modified address resolution request that is addressed from a first address associated with the first DR port instead of a second address associated with the second DR port. The modified address resolution request may be broadcasted within a logical network that is connected to the first DR instance through network extension. The method may also comprise: in response to detecting an address resolution response that includes protocol-to-hardware address mapping information associated with an endpoint located on the logical network, generating and sending a modified address resolution response towards the second DR port of the second DR instance.

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