公开(公告)号：US20170214547A1

公开(公告)日：2017-07-27

申请号：US15483867

申请日：2017-04-10

Applicant: VERSA NETWORKS, INC.

Inventor： Apurva Mehta ,  Shivaprakash Shenoy ,  Ramanarayanan Ramakrishnan ,  Krishna Sankaran

IPC: H04L12/46 ,  H04L12/715

CPC classification number: H04L12/4633 ,  H04L29/06095 ,  H04L45/04 ,  H04L45/28 ,  H04L45/74

Abstract: A method and apparatus for connecting multiple customer sites over a wide area network (WAN) using an overlay network is described. In one embodiment of the invention, each one of multiple customer edge (CE) routers establishes a Border Gateway Protocol (BGP) session with one or more BGP route reflectors and announces their private IP network prefixes and one or more transport IP addresses to reach that CE router. The BGP route reflector(s) reflect those IP network prefixes and the one or more transport IP addresses to reach that specific CE router to the other CE routers. The CE routers receive those reflected IP network prefixes and the corresponding transport IP address(es) to reach that CE router in which those IP network prefixes belong and register them in their corresponding routing/forwarding data structures. In this way, the CE routers learn how to reach each other.

公开(公告)号：US10148456B2

公开(公告)日：2018-12-04

申请号：US15483867

申请日：2017-04-10

Applicant: VERSA NETWORKS, INC.

Inventor： Apurva Mehta ,  Shivaprakash Shenoy ,  Ramanarayanan Ramakrishnan ,  Krishna Sankaran

IPC: H04L12/46 ,  H04L12/741 ,  H04L29/06 ,  H04L12/715 ,  H04L12/703

Abstract: A method and apparatus for connecting multiple customer sites over a wide area network (WAN) using an overlay network is described. In one embodiment of the invention, each one of multiple customer edge (CE) routers establishes a Border Gateway Protocol (BGP) session with one or more BGP route reflectors and announces their private IP network prefixes and one or more transport IP addresses to reach that CE router. The BGP route reflector(s) reflect those IP network prefixes and the one or more transport IP addresses to reach that specific CE router to the other CE routers. The CE routers receive those reflected IP network prefixes and the corresponding transport IP address(es) to reach that CE router in which those IP network prefixes belong and register them in their corresponding routing/forwarding data structures. In this way, the CE routers learn how to reach each other.

公开(公告)号：US09621460B2

公开(公告)日：2017-04-11

申请号：US14150640

申请日：2014-01-08

Applicant: VERSA NETWORKS, INC.

Inventor： Apurva Mehta ,  Shivaprakash Shenoy ,  Ramanarayanan Ramakrishnan ,  Krishna Sankaran

IPC: H04L12/50 ,  H04L12/741 ,  H04L12/715 ,  H04L12/703

CPC classification number: H04L12/4633 ,  H04L29/06095 ,  H04L45/04 ,  H04L45/28 ,  H04L45/74

Abstract: A method and apparatus for connecting multiple customer sites over a wide area network (WAN) using an overlay network is described. In one embodiment of the invention, each one of multiple customer edge (CE) routers establishes a Border Gateway Protocol (BGP) session with one or more BGP route reflectors and announces their private IP network prefixes and one or more transport IP addresses to reach that CE router. The BGP route reflector(s) reflect those IP network prefixes and the one or more transport IP addresses to reach that specific CE router to the other CE routers. The CE routers receive those reflected IP network prefixes and the corresponding transport IP address(es) to reach that CE router in which those IP network prefixes belong and register them in their corresponding routing/forwarding data structures. In this way, the CE routers learn how to reach each other.

公开(公告)号：US11102099B2

公开(公告)日：2021-08-24

申请号：US16686042

申请日：2019-11-15

Applicant: Versa Networks, Inc.

Inventor： Jayakrishnan V. Iyer ,  Krishna Sankaran ,  Roopa Bayar ,  Akshay Adhikari ,  Apurva Mehta

IPC: H04L12/26 ,  H04L12/715 ,  H04L12/24

Abstract: An advancement over previous techniques using only certain out-of-band probe PDUs to determine loss. Packet loss statistics for a SD-WAN overlay path can be calculated for every packet transmitted by one endpoint and every packet received at the other endpoint. The roles of the positions of circular buffers can be periodically rotated from active to pre-stable to stable to post-stable. Counters in the active role can be incremented whenever a packet is transmitted. A position identifier can indicate which counter to increment when the packet is received. Counters in positions that are stable can be used to produce loss statistics for the SD-WAN overlay path.