公开(公告)号：US20230224240A1

公开(公告)日：2023-07-13

申请号：US17571409

申请日：2022-01-07

Applicant: VMware, Inc.

Inventor： Yong Wang ,  Xinhua Hong ,  Hongwei Zhu

IPC: H04L45/24 ,  H04L45/02 ,  H04L45/7453 ,  H04L47/2441 ,  H04L12/46

CPC classification number: H04L45/24 ,  H04L12/4641 ,  H04L45/02 ,  H04L45/7453 ,  H04L47/2441

Abstract: Some embodiments provide a method for forwarding data messages between edge nodes that perform stateful processing on flows between a logical network and an external network. At a particular edge node, the method receives a data message belonging to a flow. The edge nodes use a deterministic algorithm to select one of the edge nodes to perform processing for each flow. The method identifies a first edge node to perform processing for the flow in a previous configuration and a second edge node to perform processing for the flow in a new configuration according to the algorithm. When the first and second edge nodes are different, the method uses a probabilistic filter and a stateful connection tracker to determine whether the flow existed prior to a particular time. When the flow did not exist prior to that time, the method selects the second edge node for the received data message.

公开(公告)号：US11374850B2

公开(公告)日：2022-06-28

申请号：US16906901

申请日：2020-06-19

Applicant: VMware, Inc.

Inventor： Ganesan Chandrashekhar ,  Hongwei Zhu ,  Jia Yu ,  Abhishek Goliya

IPC: H04L45/021 ,  H04L45/028 ,  H04L45/586 ,  H04L45/00 ,  H04L49/25 ,  H04L49/65 ,  H04L61/2592 ,  H04L67/289 ,  H04L41/0893 ,  H04L45/42 ,  H04L49/00 ,  H04L12/46 ,  H04L12/66 ,  H04L45/74 ,  H04L61/5007 ,  H04L101/622 ,  H04L45/64 ,  H04L45/02 ,  H04L45/24 ,  H04L45/50 ,  H04L41/0803 ,  H04L45/44

Abstract: Some embodiments provide a method for an MFE, in a first datacenter, to implement an LN spanning the first datacenter and a set of additional datacenters. The method stores records that each map one or more LN addresses for DCNs belonging to the LN and operating in the first datacenter to a different TEP address. The method stores an additional record that maps addresses for DCNs connected to a particular LFE of the LN and operating in the additional datacenters to a group of TEP addresses corresponding to LN gateways that handle data traffic for the particular LFE between the first datacenter and the additional datacenters. Upon receiving a data message with a destination address corresponding to a DCN connected to the particular LFE and operating in one of the additional datacenters, the method uses the additional record to identify a TEP address for encapsulating the data message.

公开(公告)号：US11303557B2

公开(公告)日：2022-04-12

申请号：US16906902

申请日：2020-06-19

Applicant: VMware, Inc.

Inventor： Ganesan Chandrashekhar ,  Hongwei Zhu ,  Jia Yu ,  Abhishek Goliya

IPC: H04L12/46 ,  H04L12/66 ,  H04L12/713 ,  H04L12/741 ,  H04L12/931 ,  H04L29/12 ,  H04L45/021 ,  H04L45/028 ,  H04L45/586 ,  H04L45/00 ,  H04L49/25 ,  H04L49/65 ,  H04L61/2592 ,  H04L67/289 ,  H04L41/0893 ,  H04L45/42 ,  H04L49/00 ,  H04L45/74 ,  H04L61/5007 ,  H04L101/622 ,  H04L45/64 ,  H04L45/02 ,  H04L45/24 ,  H04L45/50 ,  H04L41/0803 ,  H04L45/44

Abstract: Some embodiments provide a method for an edge computing device in a first datacenter that implements a logical network gateway for processing data traffic for a particular LFE between the first datacenter and multiple other datacenters. For each particular other datacenter, the method stores a record that maps logical network addresses for DCNs connected to the particular LFE and operating in the particular datacenter to a group of TEP addresses corresponding to logical network gateways that handle data traffic for the particular LFE between the particular datacenter and the other datacenters, including the first datacenter. Upon receiving a data message for the particular LFE from a host computer in the first datacenter, the method uses a destination address of the data message to identify one of the groups of TEP addresses. The method encapsulates the data message with one of the TEP addresses from the identified group of TEP addresses.

公开(公告)号：US11258713B2

公开(公告)日：2022-02-22

申请号：US16886540

申请日：2020-05-28

Applicant: VMware, Inc.

Inventor： Hongwei Zhu ,  Dileep Devireddy ,  Ganesan Chandrashekhar ,  Feng Gu ,  Sreenivas Duvvuri ,  Chidambareswaran Raman ,  Nithin Bangalore Raju

IPC: H04L12/813 ,  H04L29/12 ,  H04L29/06 ,  H04L29/08 ,  H04L47/20 ,  H04L101/622 ,  H04L45/00 ,  H04L45/021 ,  H04L45/44 ,  H04L45/74 ,  H04L67/1008 ,  H04L67/148

Abstract: In some embodiments, a first network device in a first site sets a first IP address for an interface of the first network device to a value of a second IP address of a second network device in a second site. Policies are added in a policy table to cover IP addresses used in the second site and a specific route for a third IP address associated with a first workload migrated from the second site to the first site is added into a routing table. The first workload is on a stretched network that is coupled via a layer 2 channel. The policy table configures the first network device to send a second packet from the first workload to a third workload in the second site via the layer 2 channel when an IP address for the third workload does not match an eligible route in the routing table.

公开(公告)号：US20210314288A1

公开(公告)日：2021-10-07

申请号：US16906703

申请日：2020-06-19

Applicant: VMware, Inc.

Inventor： Hongwei Zhu ,  Dileep Devireddy ,  Ganesan Chandrashekhar ,  Feng Gu ,  Sreenivas Duvvuri ,  Chidambareswaran Raman

IPC: H04L29/12 ,  H04L12/931

Abstract: Some embodiments provide a method for proxying ARP requests. At an MFE that executes on a host computer operating at a first site to implement a distributed router along with at least one additional MFE at the first site, the method receives, from a router at a remote second site, an ARP request for an IP address associated with a logical switch that spans the first site and the remote second site, and to which both the distributed router and the router at the remote second site connect. The method determines whether a table that includes IP addresses for a set of DCNs that use the distributed router as a default gateway includes the IP address. When the IP address is in the table, the method proxies the request at the host computer. When the particular IP address is not in the table, the MFE does not proxy the request.

公开(公告)号：US20210314265A1

公开(公告)日：2021-10-07

申请号：US16886540

申请日：2020-05-28

Applicant: VMware, Inc.

Inventor： Hongwei Zhu ,  Dileep Devireddy ,  Ganesan Chandrashekhar ,  Feng Gu ,  Sreenivas Duvvuri ,  Chidambareswaran Raman ,  Nithin Bangalore RAJU

IPC: H04L12/813 ,  H04L29/06 ,  H04L12/741 ,  H04L29/12

Abstract: In some embodiments, a first network device in a first site sets a first IP address for an interface of the first network device to a value of a second IP address of a second network device in a second site. Policies are added in a policy table to cover IP addresses used in the second site and a specific route for a third IP address associated with a first workload migrated from the second site to the first site is added into a routing table. The first workload is on a stretched network that is coupled via a layer 2 channel. The policy table configures the first network device to send a second packet from the first workload to a third workload in the second site via the layer 2 channel when an IP address for the third workload does not match an eligible route in the routing table.