公开(公告)号：US20180006995A1

公开(公告)日：2018-01-04

申请号：US15198948

申请日：2016-06-30

Applicant: Juniper Networks, Inc.

Inventor： Ryan Bickhart ,  Nitin Singh ,  Wen Lin ,  Hassan C. Hosseini

IPC: H04L29/12 ,  H04L12/46 ,  H04L12/721 ,  H04L12/751 ,  H04L12/723 ,  H04L12/66

CPC classification number: H04L61/103 ,  H04L12/462 ,  H04L12/4625 ,  H04L12/4641 ,  H04L12/66 ,  H04L45/02 ,  H04L45/50 ,  H04L45/66

Abstract: A network device is configured to provide, via an Ethernet segment with a customer network, active-active multi-homing L2 virtual bridge connectivity to the customer network using an EVPN instance (EVI) and L3 routing using an IRB interface that is a L3 routing interface assigned to the EVI; to receive, from a peer PE device of the EVPN instance, an EVPN route comprising an L2-L3 binding for a customer device of the customer network and associating the L2-L3 binding with the Ethernet segment, the L2-L3 binding comprising an L2 and an L3 address assigned to the customer device, wherein the peer PE device provides, with the network device and via the Ethernet segment, active-active multi-homing L2 virtual bridge connectivity to the customer network; and to forward, via the Ethernet segment and based at least on the L2-L3 binding received from the peer PE device, an L3 packet to the customer device.

公开(公告)号：US20170373973A1

公开(公告)日：2017-12-28

申请号：US15194359

申请日：2016-06-27

Applicant: Juniper Networks, Inc.

Inventor： Ryan Bickhart ,  Nitin Singh

IPC: H04L ,  H04L12/46 ,  H04L12/751 ,  H04L29/12

CPC classification number: H04L45/741 ,  H04L12/4604 ,  H04L12/4641 ,  H04L45/02 ,  H04L45/021 ,  H04L45/50 ,  H04L45/54 ,  H04L45/64 ,  H04L45/66 ,  H04L45/68 ,  H04L61/103 ,  H04L61/6022

Abstract: In some examples, a provider edge device provides L2 virtual bridge connectivity for at least one customer network using an EVPN instance and L3 routing using an IRB interface that is a L3 routing interface assigned to the EVPN instance; the provider edge device obtains an indication of a new binding for an endpoint device of the at least one customer network, the new binding comprising a first L2 address and a L3 address that are assigned to the endpoint device; and the provider edge device outputs, in response to determining the provider edge device stores a prior binding for the endpoint device of a second L2 address and the L3 address that are assigned to the endpoint device, an EVPN route comprising an indication of the new binding and an indication the new binding is an updated binding of the prior binding for the endpoint device.

公开(公告)号：US09787573B2

公开(公告)日：2017-10-10

申请号：US14587839

申请日：2014-12-31

Applicant: Juniper Networks, Inc.

Inventor： Nitin Singh ,  Anshu Verma ,  Sudha Madhavi Yeevani ,  Manoj Sharma ,  Hassan C. Hosseini ,  Prasantha Kumar Gudipati

IPC: H04L1/00 ,  H04L12/707 ,  H04L12/703 ,  H04L12/24 ,  H04L12/46 ,  H04L12/709

CPC classification number: H04L45/22 ,  H04L12/4641 ,  H04L41/00 ,  H04L41/0654 ,  H04L45/24 ,  H04L45/245 ,  H04L45/28

Abstract: Techniques are described for providing fast convergence in the event of a link failure in an all-active multi-homed Ethernet virtual private network. A provide edge (PE) network device may pre-configure an interface next hop and secondary next hops. The secondary next hops may be logical links to other PE network devices in the same Ethernet segment. In the event of a link failure in the interface next hop between the PE network device and a customer edge (CE) network device, the PE network device may be configured to forward data traffic to the CE network device using the secondary next hops. In the event of a link failure between the PE network device and a core network, the PE network device may be configured to send an out-of-service message to the CE network device that instructs the CE network device to stop sending traffic to the PE network device.

公开(公告)号：US20170099180A1

公开(公告)日：2017-04-06

申请号：US14921965

申请日：2015-10-23

Applicant: Juniper Networks, Inc.

Inventor： Nitin Singh ,  Kapil Arora ,  Ramesh Kandula ,  Santosh Pallagatti Kotrabasappa

IPC: H04L12/24 ,  H04L12/721 ,  H04L12/26 ,  H04L12/751

CPC classification number: H04L43/10 ,  H04L12/413 ,  H04L12/46 ,  H04L12/4641 ,  H04L43/0817 ,  H04L45/026 ,  H04L45/04 ,  H04L45/24 ,  H04L45/28 ,  H04L45/50 ,  H04L45/66 ,  H04L47/125

Abstract: In general, techniques of this disclosure may enable a remote PE router to improve convergence time in response to a link failure in an EVPN by establishing per-Ethernet Segment Identifier (ESI) Bidirectional Forwarding Detection (BFD) sessions with other PE routers that are coupled to the PE router in an EVPN. The remote PE may determine that at least two PE routers with the remote PE are locally connected to a multi-homed customer network by a particular Ethernet Segment. The remote PE may send, based on determining that the at least two PE routers are connected to the multi-homed customer network by the particular Ethernet Segment, an Ethernet Segment Identifier (ESI) Ping request packet through the intermediate network to one of the at least two PE routers, wherein the ESI Ping request packet includes at least a Bidirectional Forwarding Detection (BFD) discriminator and an ESI for the particular Ethernet Segment.

公开(公告)号：US10887223B1

公开(公告)日：2021-01-05

申请号：US16131584

申请日：2018-09-14

Applicant: Juniper Networks, Inc.

Inventor： Manoj Sharma ,  Poorna Pushkala Balasubramanian ,  Nitin Singh ,  Xiaomin Wu

IPC: H04L12/753 ,  H04L12/743

Abstract: A provider edge device, capable of accessing a first type of memory and a second type of memory, may determine a network address associated with a customer edge device. The provider edge device may determine whether the customer edge device is categorized as a leaf device in an Ethernet Tree service provided by the provider edge device. The provider edge device may selectively store the network address in the first type of memory or the second type of memory based on determining whether the customer edge device is categorized as a leaf device in the Ethernet Tree service.

公开(公告)号：US20180287990A1

公开(公告)日：2018-10-04

申请号：US15997214

申请日：2018-06-04

Applicant: Juniper Networks, Inc.

Inventor： Ryan Bickhart ,  Nitin Singh ,  Wen Lin ,  Hassan C. Hosseini

IPC: H04L29/12 ,  H04L12/46 ,  H04L12/721 ,  H04L12/751 ,  H04L12/723 ,  H04L12/66

Abstract: A network device is configured to provide, via an Ethernet segment with a customer network, active-active multi-homing L2 virtual bridge connectivity to the customer network using an EVPN instance (EVI) and L3 routing using an IRB interface that is a L3 routing interface assigned to the EVI; to receive, from a peer PE device of the EVPN instance, an EVPN route comprising an L2-L3 binding for a customer device of the customer network and associating the L2-L3 binding with the Ethernet segment, the L2-L3 binding comprising an L2 and an L3 address assigned to the customer device, wherein the peer PE device provides, with the network device and via the Ethernet segment, active-active multi-homing L2 virtual bridge connectivity to the customer network; and to forward, via the Ethernet segment and based at least on the L2-L3 binding received from the peer PE device, an L3 packet to the customer device.

公开(公告)号：US10079756B1

公开(公告)日：2018-09-18

申请号：US15072601

申请日：2016-03-17

Applicant: Juniper Networks, Inc.

Inventor： Manoj Sharma ,  Poorna Pushkala Balasubramanian ,  Nitin Singh ,  Xiaomin Wu

IPC: H04L12/753 ,  H04L12/743

CPC classification number: H04L45/48 ,  H04L45/02

Abstract: A provider edge device, capable of accessing a first type of memory and a second type of memory, may determine a network address associated with a customer edge device. The provider edge device may determine whether the customer edge device is categorized as a leaf device in an Ethernet Tree service provided by the provider edge device. The provider edge device may selectively store the network address in the first type of memory or the second type of memory based on determining whether the customer edge device is categorized as a leaf device in the Ethernet Tree service.

公开(公告)号：US09929940B2

公开(公告)日：2018-03-27

申请号：US14674569

申请日：2015-03-31

Applicant: Juniper Networks, Inc.

Inventor： Nitin Singh ,  Ryan Bickhart ,  Manoj Sharma ,  Hassan C. Hosseini

IPC: H04L12/28 ,  H04L12/707 ,  H04L12/24 ,  H04L12/703 ,  H04L12/46 ,  H04L12/721

CPC classification number: H04L45/22 ,  H04L12/4641 ,  H04L41/0663 ,  H04L45/28 ,  H04L45/66 ,  H04L45/70

Abstract: In general, techniques are provided for described herein that extend existing Ethernet Virtual Private Network (EVPN) protocol signaling mechanisms so that local, multi-homing PEs couple to an Ethernet segment can definitively convey their primary/backup designated forwarder (DF) status to any remote PE of the EVPN. In one example, this is accomplished by utilizing a new extended community attribute to each Ethernet A-D per EVI route advertised by each of the multi-homing PEs to specifically carry the advertising PE's primary or backup status. As such, any receiving remote PE need not rely on the arrival of individual MAC routes from a new primary PE and withdrawal of MAC routes from a former primary PE to update its forwarding information.

公开(公告)号：US09860150B2

公开(公告)日：2018-01-02

申请号：US14921965

申请日：2015-10-23

Applicant: Juniper Networks, Inc.

Inventor： Nitin Singh ,  Kapil Arora ,  Ramesh Kandula ,  Santosh Pallagatti Kotrabasappa

IPC: H04L12/24 ,  H04L12/26 ,  H04L12/721 ,  H04L12/751 ,  H04L12/46 ,  H04L12/707 ,  H04L12/413

CPC classification number: H04L43/10 ,  H04L12/413 ,  H04L12/46 ,  H04L12/4641 ,  H04L43/0817 ,  H04L45/026 ,  H04L45/04 ,  H04L45/24 ,  H04L45/28 ,  H04L45/50 ,  H04L45/66 ,  H04L47/125

Abstract: In general, techniques of this disclosure may enable a remote provider edge (PE) router to improve convergence time in response to a link failure in an Ethernet Virtual Private Network (EVPN) by establishing per-Ethernet Segment Identifier (ESI) Bidirectional Forwarding Detection (BFD) sessions with other PE routers that are coupled to the PE router in an EVPN. The remote PE may determine that at least two PE routers with the remote PE are locally connected to a multi-homed customer network by a particular Ethernet Segment. The remote PE may send, based on determining that the at least two PE routers are connected to the multi-homed customer network by the particular Ethernet Segment, an ESI Ping request packet through the intermediate network to one of the at least two PE routers, wherein the ESI Ping request packet includes at least a BFD discriminator and an ESI for the particular Ethernet Segment.

公开(公告)号：US20170093611A1

公开(公告)日：2017-03-30

申请号：US14869806

申请日：2015-09-29

Applicant: JUNIPER NETWORKS, INC.

Inventor： Kapil Arora ,  Nitin Singh ,  Sunil Kumar Malali

IPC: H04L12/24 ,  H04L12/707 ,  H04L12/751

CPC classification number: H04L41/0654 ,  H04L12/4625 ,  H04L12/4633 ,  H04L12/4641 ,  H04L45/02 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50 ,  H04L45/66

Abstract: In general, techniques enable an intermediate router to perform node protection for one or more other PE routers operably coupled to the intermediate router in active-active mode in an EVPN. The techniques may include configuring the intermediate router, which is positioned within an a service provider network between a remote provide edge router and at least two provider edge (PE) routers operating in active-active mode in an Ethernet Virtual Private Network (EVPN), to operate in a passive mode in which the intermediate router detects Ethernet Auto-Discovery (AD) routes without performing layer two (L2) address learning for the EVPN. The techniques may include installing a primary route to a protected router and a backup route from the intermediate router to a PE router other than the protected router, and in response to a link failure, forwarding network traffic using the backup route without requiring reprogramming the forwarding unit.