公开(公告)号：US20190123994A1

公开(公告)日：2019-04-25

申请号：US15571783

申请日：2016-05-04

Applicant: NEW H3C TECHNOLOGIES CO., LTD.

Inventor： Yang ZHANG

IPC: H04L12/761 ,  H04L12/46 ,  H04L12/931

CPC classification number: H04L45/16 ,  H04L12/46 ,  H04L12/4633 ,  H04L12/4641 ,  H04L49/201 ,  H04L49/25 ,  H04L2212/00

Abstract: An I/O board of a VXLAN switch receives a multicast data packet having a first VXLAN encapsulation, removes the first VXLAN encapsulation, determines that layer 3 multicast forwarding is to be performed for the multicast data packet, and sends the multicast data packet to a fabric board. The fabric board determines that layer 3 multicast forwarding is to be performed for the multicast data packet. When a multicast group member port corresponding to the multicast data packet is a VXLAN tunnel port, the fabric board modifies a source MAC address of the multicast data packet and sends the modified multicast data packet to an I/O board corresponding to the multicast group member port. The I/O board corresponding to the multicast group member port adds a second VXLAN encapsulation to the multicast data packet and forwards the multicast data packet having the second VXLAN encapsulation to a VXLAN.

公开(公告)号：US20190116053A1

公开(公告)日：2019-04-18

申请号：US16089002

申请日：2016-03-28

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： David Ian ALLAN

IPC: H04L12/18 ,  H04L12/46 ,  H04L12/753 ,  H04L12/721 ,  H04L12/761

CPC classification number: H04L12/185 ,  H04L12/18 ,  H04L12/4633 ,  H04L45/16 ,  H04L45/34 ,  H04L45/48

Abstract: A method and apparatus is executed by a network device in a source packet in routing (SPRING) network. The method is to establish a multipoint to multipoint multicast distribution tree where the network device is selected as a rendezvous point for the multipoint to multipoint multicast distribution tree. The method includes advertising the rendezvous point with a multicast group identifier and multicast segment identifier via a control plane protocol, receiving at least one interest registration from receivers of the multicast group via the control plane protocol, and constructing the multipoint to multipoint multicast distribution tree with the rendezvous point as a root and each of the receivers as leaves using unicast tunnels and replication points.

公开(公告)号：US20190089627A1

公开(公告)日：2019-03-21

申请号：US16084960

申请日：2016-04-29

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Gregory MIRSKY ,  Evgeny TANTSURA

IPC: H04L12/703 ,  H04L12/709 ,  H04L12/723 ,  H04L12/707 ,  H04L12/761 ,  H04L12/26 ,  H04L12/749

CPC classification number: H04L45/28 ,  H04L43/0811 ,  H04L45/16 ,  H04L45/22 ,  H04L45/245 ,  H04L45/50 ,  H04L45/741 ,  Y02D50/30

Abstract: Methods and apparatuses for enabling sub-seconds link failure detection in a multi-chassis link aggregation group (MC-LAG) system are described. A first network device of a packet network transmits a Multiprotocol Label Switching (MPLS) encapsulated packet over a first link that is part of the MC-LAG, where the MC-LAG couples the first network device with a second network device and a third network device and the second and third network devices are part of an inter-chassis redundancy (ICR) system. The MPLS encapsulated packet includes a generic associated channel header (ACH) and a payload, and where the payload includes a bidirectional forwarding detection (BFD) control packet.

公开(公告)号：US20190068388A1

公开(公告)日：2019-02-28

申请号：US16171320

申请日：2018-10-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Udayasree PALLE ,  Dhruv DHODY

IPC: H04L12/18 ,  H04L12/723 ,  H04L12/761 ,  H04L12/749

CPC classification number: H04L12/18 ,  H04L45/16 ,  H04L45/50 ,  H04L45/741

Abstract: Disclosed is a mechanism that provides the extensions of PCEP message and the objects to support PCECC with P2MP capability in downloading the labels for branch node of P2MP TE LSPs. In one implementation, the present invention provides an apparatus, a system, a node and a method that receives a PCLabelUpd message with all the extensions and the objects to support PCECC with P2MP capability, detects the object and identifies that the label download is for P2MP TE LSP and for this LSP, the apparatus/the system/the node acts as a branch node, and thereby the apparatus/the system/the node downloads all the labels specified in the object to data plane with respect to any existing branch node download mechanism for a P2MP TE LSP.

公开(公告)号：US20190020489A1

公开(公告)日：2019-01-17

申请号：US15649479

申请日：2017-07-13

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Victor Manuel Moreno ,  Shyam Kapadia ,  Sanjay Kumar Hooda

IPC: H04L12/18 ,  H04L29/06 ,  H04L12/24 ,  H04L12/46

CPC classification number: H04L12/18 ,  H04L12/4633 ,  H04L41/0893 ,  H04L45/16 ,  H04L45/20 ,  H04L69/03

Abstract: A Location/Identifier Separation Protocol (LISP) mapping server, including: a network interface for communicating with a LISP-enabled network; a mapping database; an extranet policy table; and a shared subnetwork mapping engine (SSME), including at least a hardware platform, configured to: receive a map request from a first endpoint serviced by a first xTR, the first endpoint on a first subnetwork, the map request for a second endpoint; determine that the second endpoint is not a member of the first subnetwork; query the extranet policy table to identify a second subnetwork that the first subnetwork subscribes to, and to determine that the second endpoint is a member of the second subnetwork; and provide to the first subnetwork a routing locator (RLOC) of an xTR servicing the second endpoint.

公开(公告)号：US20190007346A1

公开(公告)日：2019-01-03

申请号：US16104503

申请日：2018-08-17

Applicant: ORACLE INTERNATIONAL CORPORATION

Inventor： Bjørn Dag Johnsen ,  Dag Georg Moxnes ,  Bartosz Bogdanski

IPC: H04L12/931 ,  H04L29/08 ,  H04L12/761 ,  H04L12/751

CPC classification number: H04L49/358 ,  H04L45/02 ,  H04L45/16 ,  H04L45/48 ,  H04L45/66 ,  H04L49/201 ,  H04L67/1097 ,  H04L67/2842 ,  H04L69/22

Abstract: Systems and methods to use all incoming multicast (MC) packets as a basis for global unique identifier (GUID) to local identifier (LID) cache contents in a high performance computing environment, in accordance with an embodiment. Since all multicast packets have a Global Route Header (GRH), there is always both a source GID and a source LID defined for an incoming multicast packet. This implies that it is, in general, possible for an HCA implementation to gather information about GID and GUID to LID mappings for any sender node based on all incoming MC packets.

公开(公告)号：US20180351879A1

公开(公告)日：2018-12-06

申请号：US15571820

申请日：2016-05-04

Applicant: NEW H3C TECHNOLOGIES CO., LTD.

Inventor： Yang ZHANG

IPC: H04L12/931 ,  H04L12/46 ,  H04L12/761 ,  H04L12/947

CPC classification number: H04L49/201 ,  H04L12/413 ,  H04L12/4641 ,  H04L45/16 ,  H04L49/25 ,  H04L2212/00

Abstract: An I/O board of a VXLAN switch receives a multicast data packet from a VLAN, and sends the multicast data packet to the fabric board of the VXLAN switch when at least one multicast group member port corresponding to the multicast data packet is a first virtual port. The fabric board determines that layer 3 multicast forwarding is to be performed by the fabric board. When a multicast group member port corresponding to the multicast data packet is a VXLAN tunnel port, the fabric board modifies a source MAC address of the multicast data packet, and sends the modified multicast data packet to an I/O board corresponding to the multicast group member port on the VXLAN switch. The I/O board corresponding to the multicast group member port adds a VXLAN encapsulation to the multicast data packet and forwards the multicast data packet having the VXLAN encapsulation to a VXLAN.

公开(公告)号：US20180351878A1

公开(公告)日：2018-12-06

申请号：US15571817

申请日：2016-05-04

Applicant: NEW H3C TECHNOLOGIES CO., LTD.

Inventor： Yang ZHANG

IPC: H04L12/931 ,  H04L12/46 ,  H04L12/761 ,  H04L12/947

CPC classification number: H04L49/201 ,  H04L12/4641 ,  H04L45/16 ,  H04L49/25

Abstract: An I/O board of a VXLAN switch receives a multicast data packet having a VXLAN encapsulation, removes the VXLAN encapsulation, determines that layer 3 multicast forwarding is to be performed for the multicast data packet, and sends the multicast data packet to a fabric board of the VXLAN switch. The fabric board determines that layer 3 multicast forwarding is to be performed by the fabric board for the multicast data packet. When a multicast group member port corresponding to the multicast data packet is a VLAN port, the fabric board sends the multicast data packet to each I/O board on the VXLAN switch. Each I/O board sends the received multicast data packet to a VLAN according to a layer 3 multicast group entry used for forwarding the received multicast data packet. The layer 3 multicast group entry being included in a local layer 3 multicast group table.

公开(公告)号：US20180270147A1

公开(公告)日：2018-09-20

申请号：US15978824

申请日：2018-05-14

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Guangzhi LI ,  Dongmei WANG

IPC: H04L12/703 ,  H04L12/735 ,  H04L12/42 ,  H04L12/707 ,  H04L12/761 ,  H04L12/18 ,  H04L12/721 ,  H04L12/751 ,  H04L12/24

CPC classification number: H04L45/28 ,  H04L12/18 ,  H04L12/42 ,  H04L41/0654 ,  H04L45/02 ,  H04L45/12 ,  H04L45/128 ,  H04L45/1283 ,  H04L45/16 ,  H04L45/22 ,  H04L2212/00

Abstract: Disclosed herein are systems, methods, and computer readable media for modifying IP backbone link weights such that multicast traffic and unicast traffic will not travel on a same path between nodes. The method comprises assigning link weights to nodes within an IP backbone such that multicast forwarding paths and unicast forwarding paths are failure disjoint, and delivering undelivered multicast packets using IP unicast encapsulation to the loopback address of next hop router on a multicast tree upon link/interface failure.

公开(公告)号：US20180270146A1

公开(公告)日：2018-09-20

申请号：US15460198

申请日：2017-03-15

Applicant: Nicira, Inc.

Inventor： Jingchun JIANG ,  Caixia JIANG ,  Donghai HAN

IPC: H04L12/761 ,  H04L12/46 ,  H04L29/06

CPC classification number: H04L45/16 ,  H04L12/4633 ,  H04L69/22

Abstract: Example methods are provided for a host to perform multicast packet handling in a logical network. The method comprise in response to detecting a request to join a multicast group address, a hypervisor modifying the request by replacing a first address associated with a virtualized computing instance with a second address associated with the hypervisor; and sending the modified request to join the multicast group address on behalf of the virtualized computing instance. The method may also comprise: in response to detecting an egress multicast packet, the hypervisor encapsulating the egress multicast packet with an outer header that is addressed from the second address to the multicast group address; and sending the encapsulated egress multicast packet via one or more multicast-enabled network devices that are capable of forwarding, based on the outer header, the encapsulated egress multicast packet to one or more destinations that have joined the multicast group address.