公开(公告)号：US20190104075A1

公开(公告)日：2019-04-04

申请号：US16124770

申请日：2018-09-07

Applicant: Futurewei Technologies, Inc.

Inventor： Renwei Li ,  Alexander Clemm ,  Uma S. Chunduri ,  Kiran Makhijani

IPC: H04L12/833 ,  H04L12/801 ,  H04L12/851 ,  H04L12/917 ,  H04L12/823 ,  H04L12/751 ,  H04L12/935 ,  H04L29/06 ,  H04L12/733

Abstract: A mechanism is disclosed for implementing conditional commands carried by network data packets. A data flow including a data packet is received. The data packet includes a conditional command. A condition and a command are obtained from the conditional command. The mechanism determines that the condition is satisfied. Based on the determination that the condition is satisfied, the command is executed to alter handling of the data flow, alter handling of the data packet, or alter a context for the data flow.

公开(公告)号：US10148458B2

公开(公告)日：2018-12-04

申请号：US15349856

申请日：2016-11-11

Applicant: Futurewei Technologies, Inc.

Inventor： Lin Han ,  Renwei Li

IPC: H04L12/28 ,  H04L12/46 ,  H04L29/12 ,  H04L12/931 ,  H04L12/713 ,  H04L12/723 ,  H04L12/741

Abstract: A network element (NE) configured as a local cloud switch point (CSP) comprises a memory configured to store remote virtual routing information in association with an identifier (ID) of a remote CSP in a mapping table, wherein the remote virtual routing information is associated with a remote virtual network associated with the remote CSP, and wherein the remote virtual routing information comprises a virtual extensible network (VXN) type identifier (ID), an address family ID (AFI), and a subsequent AFI (SAFI). The NE further comprises a processor coupled to the memory and configured to perform encapsulation on a data packet to generate a encapsulated data packet by adding an outer header to the data packet based on the AFI, adding a virtualization header to the data packet based on the VXN type ID, and adding an inner header to the data packet based on the SAFI. The NE further comprises a transmitter coupled to the processor and configured to transmit the encapsulated data packet to the remote CSP.

公开(公告)号：US20180324081A1

公开(公告)日：2018-11-08

申请号：US16023635

申请日：2018-06-29

Applicant: Futurewei Technologies, Inc.

Inventor： Huaimo Chen ,  Renwei Li

IPC: H04L12/733 ,  H04L12/723 ,  H04L12/727 ,  H04L12/717

CPC classification number: H04L45/122 ,  H04L45/121 ,  H04L45/42 ,  H04L45/50

Abstract: A network element (NE) in a zone routing network includes a memory, receiver, processor, and transmitter. The memory stores a routing information base (RIB) identifying a first next-hop node for a first path in the network to reach a network controller of the network via a first communication node in the network. The first communication node is directly associated with the network controller. The receiver receives a first label-switched path (LSP) creation request message requesting creation of a first LSP through the network. The first LSP creation request message indicates an ingress node of the first LSP. The processor determines that the NE corresponds to the ingress node of the first LSP. The transmitter sends a first LSP creation response message towards the network controller via the first communication node according to the first path to indicate a creation status of the first LSP.

公开(公告)号：US10116767B2

公开(公告)日：2018-10-30

申请号：US14941292

申请日：2015-11-13

Applicant: Futurewei Technologies, Inc.

Inventor： Kiran Makhijani ,  Renwei Li

IPC: H04L29/08 ,  H04L29/06 ,  G06F9/455 ,  H04L12/701

Abstract: A service provider (SP) cloud rendezvous point (CRP-SP) in a fixed cloud rendezvous point (CRP) hierarchy, the CRP-SP comprising a memory comprising a cloudcasting information base (CCIB), a receiver configured to receive a Register request from a first site CRP (CRP Site) in an SP network, the Register request indicating a first portion of a virtual extensible network (VXN) is reachable by the SP network at the first CRP Site, a processor coupled to the receiver and the memory, the processor configured to query the CCIB to determine that a second portion of the VXN is reachable by the SP network at a second CRP Site, and a transmitter coupled to the processor and configured to transmit Report messages to both the first CRP Site and the second CRP Site, the Report messages indicating the VXN is reachable at both the first CRP Site and the second CRP Site.

公开(公告)号：US10021017B2

公开(公告)日：2018-07-10

申请号：US15060243

申请日：2016-03-03

Applicant: Futurewei Technologies, Inc.

Inventor： Huaimo Chen ,  Renwei Li

IPC: H04J1/16 ,  H04L12/28 ,  H04L12/733 ,  H04L12/727 ,  H04L12/723 ,  H04L12/717

CPC classification number: H04L45/122 ,  H04L45/121 ,  H04L45/42 ,  H04L45/50

Abstract: An apparatus for zone routing comprising a transmitter coupled to one or more communication nodes in a network, wherein the communication nodes correspond to less than all edge nodes of the network, a receiver coupled to the communication nodes, and a processor coupled to the transmitter and the receiver, wherein the processor is configured to compute a first path for a label-switched path (LSP) through the network, wherein the first path extends from an ingress node of the edge nodes to an egress node of the edge nodes, obtain a second path that traverses through a first communication node of the communication nodes available to the egress node, and send, via the transmitter, a first LSP creation request message to the first communication node requesting creation of the LSP along the first path.

公开(公告)号：US10021014B2

公开(公告)日：2018-07-10

申请号：US14918172

申请日：2015-10-20

Applicant: Futurewei Technologies, Inc.

Inventor： Huaimo Chen ,  Renwei Li ,  Anil Kumar S N ,  Veerendranatha Reddy Vallem

IPC: H04L12/24 ,  H04L12/751

CPC classification number: H04L45/02

Abstract: A method of avoiding routing interruption during transition to a topology transparent zone (TTZ) including virtualizing a path from an edge router to another edge router within the TTZ in a first direction without removing original links, wherein the original links are links from the edge router to its neighboring routers within the TTZ, receiving, by the edge router within the TTZ, a router link state advertisement (LSA) from the another edge router within the TTZ while the original links remain in place, wherein the LSA comprises a path from the another edge router to the edge router in a second direction different from the first direction, and removing, by the edge router within the TTZ, the original links after the LSA has been received from the another edge router and the virtualization of the path is complete.

公开(公告)号：US09998368B2

公开(公告)日：2018-06-12

申请号：US14737142

申请日：2015-06-11

Applicant: Futurewei Technologies, Inc.

Inventor： Huaimo Chen ,  Renwei Li

IPC: H04J3/14 ,  H04L12/723 ,  H04L12/751 ,  H04L12/721

CPC classification number: H04L45/50 ,  H04L45/02 ,  H04L45/12

Abstract: An apparatus for zone routing, comprising a transmitter, a receiver, and a processor coupled to the transmitter and the receiver, wherein the processor is configured to determine a path through a network, wherein the path extends from an ingress edge node of the network to a first egress edge node of the network, obtain a global identifier (ID) for identifying a label-switched path (LSP) along the path, send, via the transmitter, a first LSP creation request message to the first egress edge node requesting creation of the LSP, wherein the first LSP creation request message comprises the global ID, and receive, via the receiver, a LSP creation response message from the ingress edge node indicating a creation status of the LSP in response to the first LSP creation request message.

公开(公告)号：US20180139133A1

公开(公告)日：2018-05-17

申请号：US15726010

申请日：2017-10-05

Applicant: Futurewei Technologies, Inc.

Inventor： Kiran Makhijani ,  Renwei Li

IPC: H04L12/749 ,  H04W72/12 ,  H04L29/12 ,  H04W60/00

Abstract: A method implemented by a sending host implemented as a network element (NE) comprises receiving, by a receiver of the sending host, a set of locators from a distributed mapping system, each of the locators in the set of locators being an address associated with the receiving host, storing, in a memory of the sending host, the set of locators in an entry of a local identifier (ID)-to-locator database in association with an ID of the receiving host, transmitting, by a transmitter of the sending host, a plurality of packets to a plurality of endpoint routers (xTRs), each of the xTRs associated with each of the locators in the set of locators, and receiving, by the receiver of the sending host, a response from one of the xTRs in response to sending the plurality of packets to the plurality of xTRs, a locator associated with the one of the xTRs being an address of a current location of the receiving host.

公开(公告)号：US09967179B2

公开(公告)日：2018-05-08

申请号：US15157944

申请日：2016-05-18

Applicant: Futurewei Technologies, Inc.

Inventor： Huaimo Chen ,  Renwei Li

IPC: H04L12/723 ,  H04L12/721 ,  H04L12/913 ,  H04L29/06 ,  H04L12/70

CPC classification number: H04L45/50 ,  H04L45/12 ,  H04L2012/5668

Abstract: An ingress node configured to receive a first request for a temporal label switched path (LSP) in the network. The first request indicates the ingress node, egress node, network constraint, and scheduled time interval having a predetermined start time and a predetermined end time for the temporal LSP to carry traffic. The ingress node computes a shortest path in the network for the temporal LSP that satisfies the network constraint in a shifted time interval when the request indicates that the time interval is elastic, and reserves a network resource for use during the shifted time interval for the temporal LSP in advance of the predetermined start time on a link extending from the ingress node to a next hop node on the path. The ingress node sends a path message to the next hop node to set up the temporal LSP in the shifted time interval.

公开(公告)号：US20170324644A1

公开(公告)日：2017-11-09

申请号：US15656363

申请日：2017-07-21

Applicant: Futurewei Technologies, Inc.

Inventor： Huaimo Chen ,  Renwei Li

IPC: H04L12/751 ,  H04L29/06 ,  H04L12/715

CPC classification number: H04L45/02 ,  H04L41/12 ,  H04L45/04 ,  H04L69/22

Abstract: The system and method of the present disclosure relates to technology for a network system supporting multiple topology transparent zones (TTZs) on an edge node. TTZs have a topology including TTZ nodes consisting of edge nodes and internal nodes connected together by internal links. The edge nodes may also be connected to external nodes outside of the TTZ. The edge node is responsible for generating and distributing link state advertisements (LSAs) to generate virtual paths from the edge node to other edge nodes in each of the TTZs. Each TTZ sharing the edge node and each external node neighboring one of the other edge nodes of the TTZs is virtualized by distribution of the LSAs. However, the internal topology of each TTZ is concealed from each of the other TTZs sharing the edge node and from any neighboring external node connected to one of the other edge nodes.