公开(公告)号：US10999126B2

公开(公告)日：2021-05-04

申请号：US16881507

申请日：2020-05-22

Applicant: Juniper Networks, Inc.

Inventor： Tapraj Singh ,  Wen Lin ,  SelvaKumar Sivaraj ,  Rukesh Dorai ,  Sunesh Rustagi

IPC: H04L12/24 ,  H04L12/723 ,  H04L12/741 ,  H04L12/721 ,  H04L12/703 ,  H04L12/46 ,  H04L12/707 ,  H04L12/26

Abstract: Techniques are described for avoiding traffic black-holing in a multi-homed Ethernet virtual private networks (EVPNs) in which a customer device (CE) is multi-homed to a plurality of multi-homing provider edge devices (PEs) via respective links of an Ethernet segment. An overlay network is created over the Ethernet segment, and the multi-homing PEs of the EVPN are configured with a common anycast IP address for respective virtual network interfaces. Upon election as active designated forwarder (DF) for the EVPN, the DF PE of the multi-homing PEs advertises toward the customer network an IGP metric for the anycast IP address that is lower than the IGP metric(s) advertised by any of the non-DF standby PE routers segment to direct the CE to forward network packets from the customer network to the DF PE over the respective link of the Ethernet segment.

公开(公告)号：US20190222496A1

公开(公告)日：2019-07-18

申请号：US16293133

申请日：2019-03-05

Applicant: Juniper Networks, Inc.

Inventor： Rukesh Dorai ,  Tapraj Singh ,  Sunesh Rustagi

IPC: H04L12/26 ,  H04L12/24 ,  H04L12/703 ,  H04L12/46

CPC classification number: H04L43/0811 ,  H04L12/4641 ,  H04L41/0213 ,  H04L41/0645 ,  H04L41/0663 ,  H04L41/0813 ,  H04L45/16 ,  H04L45/22 ,  H04L45/24 ,  H04L45/28

Abstract: A method and network device to execute an Ethernet Virtual Private Network (EVPN) protocol to configure the network device to participate as one of a plurality of customer edge (CE) routers that provide an active-active configuration for an Ethernet segment coupling the CE routers to a plurality of provider edge (PE) routers, wherein the processor is configured to determine whether a packet that is to be forwarded is an operations, administration, and management (OAM) packet; in response to determining that the packet comprises an OAM packet, replicate the OAM packet for one or more interface links of an Ethernet segment associated with the CE router; configure forwarding instructions to the one or more interface links of the Ethernet segment associated with the CE router; and forward the OAM packet and the replicated OAM packets to the PE routers.

公开(公告)号：US10862783B2

公开(公告)日：2020-12-08

申请号：US16293133

申请日：2019-03-05

Applicant: Juniper Networks, Inc.

Inventor： Rukesh Dorai ,  Tapraj Singh ,  Sunesh Rustagi

IPC: H04L12/26 ,  H04L12/24 ,  H04L12/703 ,  H04L12/46 ,  H04L12/707 ,  H04L12/761

Abstract: A method and network device to execute an Ethernet Virtual Private Network (EVPN) protocol to configure the network device to participate as one of a plurality of customer edge (CE) routers that provide an active-active configuration for an Ethernet segment coupling the CE routers to a plurality of provider edge (PE) routers, wherein the processor is configured to determine whether a packet that is to be forwarded is an operations, administration, and management (OAM) packet; in response to determining that the packet comprises an OAM packet, replicate the OAM packet for one or more interface links of an Ethernet segment associated with the CE router; configure forwarding instructions to the one or more interface links of the Ethernet segment associated with the CE router; and forward the OAM packet and the replicated OAM packets to the PE routers.

公开(公告)号：US20200287780A1

公开(公告)日：2020-09-10

申请号：US16881507

申请日：2020-05-22

Applicant: Juniper Networks, Inc.

Inventor： Tapraj Singh ,  Wen Lin ,  SelvaKumar Sivaraj ,  Rukesh Dorai ,  Sunesh Rustagi

IPC: H04L12/24 ,  H04L12/723 ,  H04L12/741 ,  H04L12/721 ,  H04L12/703 ,  H04L12/46 ,  H04L12/707 ,  H04L12/26

Abstract: Techniques are described for avoiding traffic black-holing in a multi-homed Ethernet virtual private networks (EVPNs) in which a customer device (CE) is multi-homed to a plurality of multi-homing provider edge devices (PEs) via respective links of an Ethernet segment. An overlay network is created over the Ethernet segment, and the multi-homing PEs of the EVPN are configured with a common anycast IP address for respective virtual network interfaces. Upon election as active designated forwarder (DF) for the EVPN, the DF PE of the multi-homing PEs advertises toward the customer network an IGP metric for the anycast IP address that is lower than the IGP metric(s) advertised by any of the non-DF standby PE routers segment to direct the CE to forward network packets from the customer network to the DF PE over the respective link of the Ethernet segment.

公开(公告)号：US10243821B2

公开(公告)日：2019-03-26

申请号：US14984026

申请日：2015-12-30

Applicant: Juniper Networks, Inc.

Inventor： Rukesh Dorai ,  Tapraj Singh ,  Sunesh Rustagi

IPC: H04L12/26 ,  H04L12/46 ,  H04L12/24 ,  H04L12/703 ,  H04L12/761 ,  H04L12/707

Abstract: A method and network device to execute an Ethernet Virtual Private Network (EVPN) protocol to configure the network device to participate as one of a plurality of customer edge (CE) routers that provide an active-active configuration for an Ethernet segment coupling the CE routers to a plurality of provider edge (PE) routers, wherein the processor is configured to determine whether a packet that is to be forwarded is an operations, administration, and management (OAM) packet; in response to determining that the packet comprises an OAM packet, replicate the OAM packet for one or more interface links of an Ethernet segment associated with the CE router; configure forwarding instructions to the one or more interface links of the Ethernet segment associated with the CE router; and forward the OAM packet and the replicated OAM packets to the PE routers.

公开(公告)号：US10666500B2

公开(公告)日：2020-05-26

申请号：US15085533

申请日：2016-03-30

Applicant: Juniper Networks, Inc.

Inventor： Tapraj Singh ,  Wen Lin ,  SelvaKumar Sivaraj ,  Rukesh Dorai ,  Sunesh Rustagi

IPC: H04L12/24 ,  H04L12/723 ,  H04L12/741 ,  H04L12/721 ,  H04L12/703 ,  H04L12/46 ,  H04L12/707 ,  H04L12/26

Abstract: Techniques are described for avoiding traffic black-holing in a multi-homed Ethernet virtual private networks (EVPNs) in which a customer device (CE) is multi-homed to a plurality of multi-homing provider edge devices (PEs) via respective links of an Ethernet segment. An overlay network is created over the Ethernet segment, and the multi-homing PEs of the EVPN are configured with a common anycast IP address for respective virtual network interfaces. Upon election as active designated forwarder (DF) for the EVPN, the DF PE of the multi-homing PEs advertises toward the customer network an IGP metric for the anycast IP address that is lower than the IGP metric(s) advertised by any of the non-DF standby PE routers segment to direct the CE to forward network packets from the customer network to the DF PE over the respective link of the Ethernet segment.

公开(公告)号：US10110470B2

公开(公告)日：2018-10-23

申请号：US15265304

申请日：2016-09-14

Applicant: Juniper Networks, Inc.

Inventor： Maruthi Kishore Tiruveedhula ,  Rukesh Dorai ,  Sudhin Jacob

IPC: H04L12/28 ,  H04L12/705 ,  H04L12/46 ,  H04L12/751 ,  H04L12/707 ,  H04L29/12 ,  H04L12/24 ,  H04L12/721 ,  H04L12/715

Abstract: A device may receive a route identifier that includes a range identifier or a configuration identifier. The range identifier may identify a range of broadcast domain identifiers associated with a first device. The configuration identifier may identify an Ethernet segment identifier (ESI) configuration of the first device. The device may identify the range identifier or the configuration identifier included in the route identifier. The device may select a designated forwarder from among multiple devices based on the range of broadcast domain identifiers or based on identifying the configuration identifier. The designated forwarder may be the same designated forwarder selected by at least one other device.

公开(公告)号：US20180091445A1

公开(公告)日：2018-03-29

申请号：US15281034

申请日：2016-09-29

Applicant: Juniper Networks, Inc.

Inventor： Nitin Singh ,  Rukesh Dorai ,  Kapil Arora

IPC: H04L12/931 ,  H04L12/933 ,  H04L12/46

CPC classification number: H04L12/4633 ,  H04L12/4641 ,  H04L45/02 ,  H04L45/127 ,  H04L45/22 ,  H04L45/66 ,  H04L45/70

Abstract: Techniques are described to provide designated forwarder state propagation to customer edge network devices using connectivity fault management (CFM) so as to ensure that customer edge (CE) network devices are aware of a change in designated forwarder election in an Ethernet Virtual Private Network (EVPN). In one example, a method includes determining a change in designated forwarder election from a provider edge (PE) network device to another PE device; in response to the change in designated forwarder election, configuring a message including at least a client-facing interface status of the first PE device, wherein the client-facing interface status included in the message is configured as an indicator of a result of the change in designator forwarder election; and transmitting the message to the multi-homed CE device.

公开(公告)号：US20170288948A1

公开(公告)日：2017-10-05

申请号：US15085533

申请日：2016-03-30

Applicant: Juniper Networks, Inc.

Inventor： Tapraj Singh ,  Wen Lin ,  SelvaKumar Sivaraj ,  Rukesh Dorai ,  Sunesh Rustagi

IPC: H04L12/24 ,  H04L12/703 ,  H04L12/721 ,  H04L12/723 ,  H04L12/741

Abstract: Techniques are described for avoiding traffic black-holing in a multi-homed Ethernet virtual private networks (EVPNs) in which a customer device (CE) is multi-homed to a plurality of multi-homing provider edge devices (PEs) via respective links of an Ethernet segment. An overlay network is created over the Ethernet segment, and the multi-homing PEs of the EVPN are configured with a common anycast IP address for respective virtual network interfaces. Upon election as active designated forwarder (DF) for the EVPN, the DF PE of the multi-homing PEs advertises toward the customer network an IGP metric for the anycast IP address that is lower than the IGP metric(s) advertised by any of the non-DF standby PE routers segment to direct the CE to forward network packets from the customer network to the DF PE over the respective link of the Ethernet segment.

公开(公告)号：US20170195199A1

公开(公告)日：2017-07-06

申请号：US14984026

申请日：2015-12-30

Applicant: Juniper Networks, Inc.

Inventor： Rukesh Dorai ,  Tapraj Singh ,  Sunesh Rustagi

IPC: H04L12/26 ,  H04L12/761 ,  H04L12/46

CPC classification number: H04L43/0811 ,  H04L12/4641 ,  H04L41/0213 ,  H04L41/0645 ,  H04L41/0663 ,  H04L41/0813 ,  H04L45/16 ,  H04L45/22 ,  H04L45/24 ,  H04L45/28

Abstract: A method and network device to execute an Ethernet Virtual Private Network (EVPN) protocol to configure the network device to participate as one of a plurality of customer edge (CE) routers that provide an active-active configuration for an Ethernet segment coupling the CE routers to a plurality of provider edge (PE) routers, wherein the processor is configured to determine whether a packet that is to be forwarded is an operations, administration, and management (OAM) packet; in response to determining that the packet comprises an OAM packet, replicate the OAM packet for one or more interface links of an Ethernet segment associated with the CE router; configure forwarding instructions to the one or more interface links of the Ethernet segment associated with the CE router; and forward the OAM packet and the replicated OAM packets to the PE routers.