公开(公告)号：US09735983B1

公开(公告)日：2017-08-15

申请号：US14500120

申请日：2014-09-29

Applicant: Juniper Networks, Inc.

Inventor： Manoj Sharma ,  Shrinivasa Kini ,  Siddharth A. Tuli ,  Tapraj Singh ,  Sunesh Rustagi

IPC: H04L12/28 ,  H04L12/46

CPC classification number: H04L12/4675

Abstract: A provider edge (PE) device may receive an indication to perform a designated forwarder (DF) election associated with a network segment that includes the PE device, one or more other PE devices, and a client edge (CE) device. The PE device, the one or more other PE devices, and the CE device may be associated with an Ethernet virtual private network (EVPN) that includes a group of EVPN instances (EVIs). The PE device may perform the DF election in order to determine election information associated with the PE device. The election information may include information associated with a particular EVI, of the group of EVIs, for which the PE device is to act as a DF. The PE device may provide the election information to the CE device to cause the CE device to provide traffic, associated with a particular VLAN included in the particular EVI, to the PE device.

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：US10050809B2

公开(公告)日：2018-08-14

申请号：US15676181

申请日：2017-08-14

Applicant: Juniper Networks, Inc.

Inventor： Manoj Sharma ,  Shrinivasa Kini ,  Siddharth A. Tuli ,  Tapraj Singh ,  Sunesh Rustagi

IPC: H04L12/28 ,  H04L12/46

Abstract: A provider edge (PE) device may receive an indication to perform a designated forwarder (DF) election associated with a network segment that includes the PE device, one or more other PE devices, and a client edge (CE) device. The PE device, the one or more other PE devices, and the CE device may be associated with an Ethernet virtual private network (EVPN) that includes a group of EVPN instances (EVIs). The PE device may perform the DF election in order to determine election information associated with the PE device. The election information may include information associated with a particular EVI, of the group of EVIs, for which the PE device is to act as a DF. The PE device may provide the election information to the CE device to cause the CE device to provide traffic, associated with a particular VLAN included in the particular EVI, to the PE device.

公开(公告)号：US09900170B2

公开(公告)日：2018-02-20

申请号：US15060365

申请日：2016-03-03

Applicant: Juniper Networks, Inc

Inventor： Maruthi Kishore Tiruveedhula ,  Tapraj Singh ,  Sunesh Rustagi ,  Arijit Paul ,  Vikas Vidyalal Patel ,  Himanshu Agarwal ,  Suneel Kumar Pentala

IPC: H04L12/18 ,  H04L12/751 ,  H04L12/741 ,  H04L12/721 ,  H04L29/12

CPC classification number: H04L12/1886 ,  H04L45/02 ,  H04L45/08 ,  H04L45/66 ,  H04L45/745 ,  H04L61/2069 ,  H04L61/6022

Abstract: In one example, a method includes performing L2 learning of a C-MAC address included in a first L2 data message by a first provider edge (PE) router included in an Ethernet Segment of a Provider-Backbone Bridging Ethernet Virtual Private Network (PBB-EVPN); sending to a second PE router within the Ethernet Segment an L2 control message comprising the C-MAC address and a B-MAC address corresponding to the Ethernet Segment of the PBB-EVPN, wherein the L2 control message informs the second PE router of the reachability of the C-MAC address through the first PE router; receiving, by the first PE router and from the second PE router, a second L2 data message as unicast traffic destined for the C-MAC address; and forwarding the second L2 data message to the first CE router.

公开(公告)号：US20180034667A1

公开(公告)日：2018-02-01

申请号：US15676181

申请日：2017-08-14

Applicant: Juniper Networks, Inc.

Inventor： Manoj Sharma ,  Shrinivasa Kini ,  Siddharth A. Tuli ,  Tapraj Singh ,  Sunesh Rustagi

IPC: H04L12/46

CPC classification number: H04L12/4675

Abstract: A provider edge (PE) device may receive an indication to perform a designated forwarder (DF) election associated with a network segment that includes the PE device, one or more other PE devices, and a client edge (CE) device. The PE device, the one or more other PE devices, and the CE device may be associated with an Ethernet virtual private network (EVPN) that includes a group of EVPN instances (EVIs). The PE device may perform the DF election in order to determine election information associated with the PE device. The election information may include information associated with a particular EVI, of the group of EVIs, for which the PE device is to act as a DF. The PE device may provide the election information to the CE device to cause the CE device to provide traffic, associated with a particular VLAN included in the particular EVI, to the PE device.

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：US10469361B1

公开(公告)日：2019-11-05

申请号：US15270527

申请日：2016-09-20

Applicant: Juniper Networks, Inc.

Inventor： Candida M. Bayross ,  SelvaKumar Sivaraj ,  Tapraj Singh ,  Sunesh Rustagi

IPC: H04L12/705 ,  H04L12/46 ,  H04L12/721 ,  H04L12/741

Abstract: In general, techniques are described for reducing forwarding loops for layer (L2) traffic that traverses an EVPN or PBB-EVPN instance (EVI) by deterministically determining an access-facing logical interface to block from respective access-facing logical interfaces of PE devices that switch the L2 traffic using the EVI. A provider edge (PE) network device may detect an L2 forwarding loop on an L2 forwarding path that includes the access-facing logical interface. In response to detecting an L2 forwarding loop and based at least on comparing an identifier for the local PE device and an identifier for a remote PE device that implements the EVPN instance, the PE device may block the access-facing logical interface to block L2 traffic from the local customer network.

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.