公开(公告)号：US20250141791A1

公开(公告)日：2025-05-01

申请号：US18384552

申请日：2023-10-27

Applicant: Cisco Technology, Inc.

Inventor： Lianxiang Wang ,  Jiaoming Li ,  Pan Wu ,  Yunpeng Zhang

IPC: H04L45/00 ,  H04L45/50 ,  H04L45/64

Abstract: Techniques for achieving hybrid control over overlay and underlay path selection by integrating underlay path identities into software-defined wide area network (SD-WAN) sessions to create individual SD-WAN sessions for each underlay path. The techniques may include receiving first path identification data associated with an underlay path of an overlay network domain that is disposed between a first edge node and a second edge node of an SD-WAN system. Based on the first path identification data, an SD-WAN session may be generated that is to utilize the underlay path for sending traffic through the overlay network domain. In some examples, the underlay path may be mapped to the SD-WAN session and the SD-WAN session may be bound to a data plane output forwarding chain associated with the underlay path such that the traffic sent over the SD-WAN session traverses the underlay path of the overlay network domain.

公开(公告)号：US20230261989A1

公开(公告)日：2023-08-17

申请号：US17674453

申请日：2022-02-17

Applicant: Cisco Technology, Inc.

Inventor： Lianxiang Wang ,  Zhiyong Fang ,  Xiaorong Wang ,  Bin Shi ,  Jianda Liu ,  Yunpeng Zhang

IPC: H04L45/586 ,  H04L45/42 ,  H04L45/50 ,  H04L45/745

CPC classification number: H04L45/586 ,  H04L45/42 ,  H04L45/507 ,  H04L45/745

Abstract: According to an embodiment, a node comprises one or more processors operable to execute instructions to cause the node to perform operations that comprise receiving a packet from a first node associated with an SD-WAN domain. The packet comprises a header indicating a TLOC associated with a second node to send the packet, the second node associated with an SR domain. The operations comprise determining that the TLOC corresponds to a virtual TLOC used in the SD-WAN domain to identify the second node that is in the SR domain and, in response, determining a second node identifier used in the SR domain to identify the second node. The operations further comprise preparing the packet to be communicated via the SR domain. Preparing the packet comprises including the second node identifier in the packet. The operations further comprise sending the packet comprising the second node identifier to the second node.

公开(公告)号：US12021746B2

公开(公告)日：2024-06-25

申请号：US17674453

申请日：2022-02-17

Applicant: Cisco Technology, Inc.

Inventor： Lianxiang Wang ,  Zhiyong Fang ,  Xiaorong Wang ,  Bin Shi ,  Jianda Liu ,  Yunpeng Zhang

IPC: H04L45/586 ,  H04L45/42 ,  H04L45/50 ,  H04L45/745

CPC classification number: H04L45/586 ,  H04L45/42 ,  H04L45/507 ,  H04L45/745

Abstract: According to an embodiment, a node comprises one or more processors operable to execute instructions to cause the node to perform operations that comprise receiving a packet from a first node associated with an SD-WAN domain. The packet comprises a header indicating a TLOC associated with a second node to send the packet, the second node associated with an SR domain. The operations comprise determining that the TLOC corresponds to a virtual TLOC used in the SD-WAN domain to identify the second node that is in the SR domain and, in response, determining a second node identifier used in the SR domain to identify the second node. The operations further comprise preparing the packet to be communicated via the SR domain. Preparing the packet comprises including the second node identifier in the packet. The operations further comprise sending the packet comprising the second node identifier to the second node.

公开(公告)号：US20170366461A1

公开(公告)日：2017-12-21

申请号：US15184840

申请日：2016-06-16

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Danmu Wu ,  Jianda Liu ,  Yunpeng Zhang ,  Feng Cai

IPC: H04L12/851 ,  H04L12/723 ,  H04L12/709

CPC classification number: H04L45/50 ,  H04L45/24

Abstract: A method is provided in one embodiment and includes receiving at a network element an encapsulated packet and determining whether both an ECMP/LAG Existing (“ele”) flag and an Entropy Label Capability (“elc”) flag are set for an egress node of the packet in a Label Distribution Protocol (“LDP”) database of the network element. If both the ele and elc flags are set for the egress node of the packet in the LDP database, the method further includes determining whether the network element is an ingress node for the packet and, if the network element is the ingress node for the packet, pushing an Entropy Label (“EL”) and an Entropy Label Indicator (“ELI”) onto an MPLS stack of the packet.

公开(公告)号：US09912598B2

公开(公告)日：2018-03-06

申请号：US15184840

申请日：2016-06-16

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Danmu Wu ,  Jianda Liu ,  Yunpeng Zhang ,  Feng Cai

IPC: H04L12/26 ,  H04L12/851 ,  H04L12/723 ,  H04L12/709

CPC classification number: H04L45/50 ,  H04L45/24

Abstract: A method is provided in one embodiment and includes receiving at a network element an encapsulated packet and determining whether both an ECMP/LAG Existing (“ele”) flag and an Entropy Label Capability (“elc”) flag are set for an egress node of the packet in a Label Distribution Protocol (“LDP”) database of the network element. If both the ele and elc flags are set for the egress node of the packet in the LDP database, the method further includes determining whether the network element is an ingress node for the packet and, if the network element is the ingress node for the packet, pushing an Entropy Label (“EL”) and an Entropy Label Indicator (“ELI”) onto an MPLS stack of the packet.