公开(公告)号：US20220231961A1

公开(公告)日：2022-07-21

申请号：US17197397

申请日：2021-03-10

Applicant: VMware, Inc.

Inventor： Xi CHENG ,  Caixia JIANG ,  Xiaoyan JIN ,  Qiong WANG

IPC: H04L12/863 ,  H04L29/08 ,  H04L12/741

Abstract: Example methods and systems to perform flow cache information update(s) for packet processing are described. In one example, a network element may configure flow cache information specifying a set of actions based on a sequence of stages that is executable during slow-path packet processing. The network element may configure dependency information specifying execution dependence or independence among the set of actions during fast-path packet processing. In response to detecting a configuration change associated with stage(s) from the sequence of stages, the network element may identify first action(s) affected by the configuration change and second action(s) not affected by the configuration change. This way, a granular update may be performed to the flow cache information by updating the at least one first action, but not the at least one second action.

公开(公告)号：US20220150147A1

公开(公告)日：2022-05-12

申请号：US17093517

申请日：2020-11-09

Applicant: VMware, Inc.

Inventor： Xi CHENG ,  Haoran CHEN ,  Xiaoyan JIN ,  Caixia JIANG ,  Qiong WANG ,  Donghai HAN

IPC: H04L12/26 ,  H04L12/46 ,  H04L12/851 ,  H04L12/823 ,  H04L12/715 ,  G06F9/455

Abstract: Example methods and systems for flow-based latency measurement for logical overlay network traffic are described. In one example, in response to detecting a first inner data packet associated with a packet flow, a first computer system may generate and send a first encapsulated packet via a logical overlay tunnel towards a second computer system. The first encapsulated packet may be generated by encapsulating the first inner data packet with a first outer header that includes first time information associated with the first inner data packet at the first computer system. In response to detecting a second encapsulated packet from the second computer system via the logical overlay tunnel, the first computer system may determine a flow-based latency measurement associated with the packet flow based on the first time information, and second time information identified from a second outer header of the second encapsulated packet.

公开(公告)号：US20240250920A1

公开(公告)日：2024-07-25

申请号：US18185763

申请日：2023-03-17

Applicant: VMware, Inc.

Inventor： Dongrui MO ,  Xi CHENG ,  Qiong WANG ,  Jingchun JIANG ,  Yonggang WANG

IPC: H04L49/90

CPC classification number: H04L49/90 ,  H04L2101/622

Abstract: An example method of beacon probing in a computing system includes: sending, by cross-host beacon probing (CHBP) software executing in a first host of the computing system, a first beacon probe from a first network interface controller (NIC) of the first host to NICs on a same layer 2 domain as the first NIC, the NICs including a second NIC of the first host and cross-host NICs of at least one host other than the first host; receiving, at the CHBP software through the first NIC, acknowledgements (ACKs) to the first beacon probe from the cross-host NICs; and determining, in response to the first beacon probe, connectivity statuses of the first NIC and the second NIC by the CHBP software based on the ACKs and on whether the second NIC receives the first beacon probe.

公开(公告)号：US20220210040A1

公开(公告)日：2022-06-30

申请号：US17170900

申请日：2021-02-09

Applicant: VMware, Inc.

Inventor： Haoran CHEN ,  Xi CHENG ,  Caixia JIANG ,  Jingchun JIANG ,  Feng PAN

IPC: H04L12/26 ,  H04L12/715 ,  H04L12/46

Abstract: Example methods and systems for logical overlay tunnel monitoring are described. One example may involve a first computer system obtaining control information identifying a list of multiple logical overlay tunnels to be monitored, including a first logical overlay tunnel between a first virtual tunnel endpoint (VTEP) and a second VTEP. Based on the control information, a first monitoring agent may configure and inject a probe packet at the first VTEP to cause the first VTEP to perform encapsulation and send an encapsulated probe packet over the first logical overlay tunnel. In response, an encapsulated response packet that includes a response packet may be received from the second monitoring agent over the first logical overlay tunnel. Based on the response packet, a tunnel performance metric associated with the first logical overlay tunnel may be determined.

公开(公告)号：US20230403218A1

公开(公告)日：2023-12-14

申请号：US17875386

申请日：2022-07-27

Applicant: VMware, Inc.

Inventor： Xi CHENG ,  Caixia JIANG ,  Dongrui MO ,  Yahao HE ,  Qiong WANG

IPC: H04L43/0817 ,  H04L43/065 ,  H04L41/0604

CPC classification number: H04L43/0817 ,  H04L43/065 ,  H04L41/0627

Abstract: Example methods and systems for state consistency monitoring in a network environment are described. In one example, a computer system may identify association chain(s) that associate (a) first state information associated with one or more first network entities residing on a first plane with (b) second state information associated with one or more second network entities residing on a second plane. Based on the association chain(s), a consistency check may be performed to compare multiple first fields of the first state information with multiple second fields of the second state information. In response to determination that there is a state inconsistency based on the consistency check, a remediation action to address the state inconsistency by generating and sending at least one of the following: a notification to a user, and a remediation request to a particular first network entity residing on the first plane or a particular second network entity residing on the second plane.