公开(公告)号：US11689427B2

公开(公告)日：2023-06-27

申请号：US17673182

申请日：2022-02-16

Applicant: Cisco Technology, Inc.

Inventor： Ahmed R. Bashandy ,  Clarence Filsfils ,  David D. Ward

IPC: H04L41/12 ,  H04L45/00 ,  H04L45/12 ,  H04L45/50 ,  H04L45/745 ,  H04L45/74 ,  H04L45/02 ,  H04L49/60 ,  H04L12/46 ,  H04L47/724

CPC classification number: H04L41/12 ,  H04L12/4633 ,  H04L45/04 ,  H04L45/12 ,  H04L45/46 ,  H04L45/50 ,  H04L45/507 ,  H04L45/54 ,  H04L45/74 ,  H04L45/745 ,  H04L47/724 ,  H04L49/608

Abstract: An apparatus and method is disclosed for segment routing (SR) over label distribution protocol (LDP). In one embodiment, the method includes a node receiving a packet with an attached segment ID. In response, the node may attach a label to the packet. Thereafter, the node may forward the packet with the attached label and segment ID to another node via a label switched path (LSP).

公开(公告)号：US09491058B2

公开(公告)日：2016-11-08

申请号：US14210729

申请日：2014-03-14

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Ahmed R. Bashandy ,  David D. Ward ,  Stefano B. Previdi

IPC: H04L12/723 ,  H04L12/741 ,  H04L12/24 ,  H04L12/721 ,  H04L12/715

CPC classification number: H04L41/12 ,  H04L12/4633 ,  H04L45/04 ,  H04L45/12 ,  H04L45/46 ,  H04L45/50 ,  H04L45/507 ,  H04L45/54 ,  H04L45/74 ,  H04L45/745 ,  H04L47/724 ,  H04L49/608

Abstract: A method and apparatus for forwarding packets through a network domain that contains nodes that are label distribution protocol (LDP) enabled and nodes that are segment routing (SR) enabled. In one embodiment, the method may include a network node receiving a packet with a label attached thereto. The node swaps the label with a segment identifier (ID). The node then forwards the packet to an SR node. In another embodiment, the method may include a network node receiving a packet with a segment ID attached thereto. The node swaps the segment ID with a label. The node then forwards the packet to an LDP enabled node.

Abstract translation: 一种用于通过包含启用标签分发协议（LDP）的节点的网络域转发分组的方法和装置，以及启用分段路由（SR）的节点。 在一个实施例中，该方法可以包括接收具有附加到其上的标签的分组的网络节点。 节点用分段标识符（ID）交换标签。 然后节点将数据包转发到SR节点。 在另一个实施例中，该方法可以包括接收具有附加到其上的段ID的分组的网络节点。 节点用标签交换分段ID。 然后节点将数据包转发到启用LDP的节点。

公开(公告)号：US20140317259A1

公开(公告)日：2014-10-23

申请号：US14205245

申请日：2014-03-11

Applicant: Cisco Technology, Inc.

Inventor： Stefano B. Previdi ,  Clarence Filsfils ,  Ahmed R. Bashandy ,  David D. Ward

IPC: H04L29/12

CPC classification number: H04L61/30 ,  H04L45/02 ,  H04L45/34 ,  H04L45/38 ,  H04L45/42 ,  H04L45/44 ,  H04L45/50

Abstract: Various techniques can be used to advertise adjacency segment identifiers (IDs) within a segment routing (SR) network. For example, a method, performed by a first node, can involve identifying an adjacency segment between a first node and a second node; assigning an identifier to the adjacency segment; and sending an Intermediate-System-to-Intermediate-System (IS-IS) hello (IIH) message to another node. The adjacency advertisement includes the identifier. If the adjacency segment is part of a LAN, the IIH message can be sent to a designated node that aggregates adjacency segment ID advertisements for the other nodes on the LAN.

Abstract translation: 可以使用各种技术来在段路由（SR）网络中通告相邻段标识符（ID）。 例如，由第一节点执行的方法可以涉及识别第一节点和第二节点之间的邻接段; 将标识符分配给邻接段; 并向另一个节点发送中间系统到中间系统（IS-IS）hello（IIH）消息。 相邻广告包括标识符。 如果邻接段是LAN的一部分，则可以将IIH消息发送到指定的节点，该节点聚合LAN上其他节点的邻接段ID通告。

公开(公告)号：US20220173976A1

公开(公告)日：2022-06-02

申请号：US17673182

申请日：2022-02-16

Applicant: Cisco Technology, Inc.

Inventor： Ahmed R. Bashandy ,  Clarence Filsfils ,  David D. Ward

IPC: H04L41/12 ,  H04L45/00 ,  H04L45/12 ,  H04L45/50 ,  H04L45/745 ,  H04L45/74 ,  H04L49/60 ,  H04L12/46 ,  H04L47/724

Abstract: An apparatus and method is disclosed for segment routing (SR) over label distribution protocol (LDP). In one embodiment, the method includes a node receiving a packet with an attached segment ID. In response, the node may attach a label to the packet. Thereafter, the node may forward the packet with the attached label and segment ID to another node via a label switched path (LSP).

公开(公告)号：US20190222483A1

公开(公告)日：2019-07-18

申请号：US16367869

申请日：2019-03-28

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ahmed R. Bashandy ,  Clarence Filsfils ,  David D. Ward

IPC: H04L12/24 ,  H04L12/931 ,  H04L12/741 ,  H04L12/715 ,  H04L12/723 ,  H04L12/913 ,  H04L12/46 ,  H04L12/721

Abstract: An apparatus and method is disclosed for segment routing (SR) over label distribution protocol (LDP). In one embodiment, the method includes a node receiving a packet with an attached segment ID. In response, the node may attach a label to the packet. Thereafter, the node may forward the packet with the attached label and segment ID to another node via a label switched path (LSP).

公开(公告)号：US09749187B2

公开(公告)日：2017-08-29

申请号：US15280262

申请日：2016-09-29

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Ahmed R. Bashandy ,  David D. Ward ,  Stefano B. Previdi

IPC: H04L12/24 ,  H04L12/721 ,  H04L12/723 ,  H04L12/715 ,  H04L12/741 ,  H04L12/931

CPC classification number: H04L41/12 ,  H04L12/4633 ,  H04L45/04 ,  H04L45/12 ,  H04L45/46 ,  H04L45/50 ,  H04L45/507 ,  H04L45/54 ,  H04L45/74 ,  H04L45/745 ,  H04L47/724 ,  H04L49/608

Abstract: A method, apparatus and memory for forwarding packets through a network domain containing nodes that are label distribution protocol (LDP) enabled and nodes that are segment routing (SR) enabled. In one embodiment, the method may include receiving at a hybrid node a packet with an attached segment identifier and detaching the segment identifier from the packet. This embodiment of the method continues with attaching a first LDP label to the packet after the segment identifier is detached and forwarding the packet with the attached first LDP label on a path toward a first LDP enabled node.

公开(公告)号：US09565160B2

公开(公告)日：2017-02-07

申请号：US14205245

申请日：2014-03-11

Applicant: Cisco Technology, Inc.

Inventor： Stefano B. Previdi ,  Clarence Filsfils ,  Ahmed R. Bashandy ,  David D. Ward

IPC: H04L12/721 ,  H04L29/12 ,  H04L12/751 ,  H04L12/717 ,  H04L12/723

CPC classification number: H04L61/30 ,  H04L45/02 ,  H04L45/34 ,  H04L45/38 ,  H04L45/42 ,  H04L45/44 ,  H04L45/50

Abstract: Various techniques can be used to advertise adjacency segment identifiers (IDs) within a segment routing (SR) network. For example, a method, performed by a first node, can involve identifying an adjacency segment between a first node and a second node; assigning an identifier to the adjacency segment; and sending an Intermediate-System-to-Intermediate-System (IS-IS) hello (IIH) message to another node. The adjacency advertisement includes the identifier. If the adjacency segment is part of a LAN, the IIH message can be sent to a designated node that aggregates adjacency segment ID advertisements for the other nodes on the LAN.

Abstract translation: 可以使用各种技术来在段路由（SR）网络中通告相邻段标识符（ID）。 例如，由第一节点执行的方法可以涉及识别第一节点和第二节点之间的邻接段; 将标识符分配给邻接段; 并向另一个节点发送中间系统到中间系统（IS-IS）hello（IIH）消息。 邻接广告包括标识符。 如果邻接段是LAN的一部分，则可以将IIH消息发送到指定的节点，该节点聚合LAN上其他节点的邻接段ID通告。

公开(公告)号：US09319312B2

公开(公告)日：2016-04-19

申请号：US14279659

申请日：2014-05-16

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Stefano B. Previdi ,  Steven W. Ulrich ,  Ahmed R. Bashandy

IPC: H04L12/28 ,  H04L12/723 ,  H04L12/715

CPC classification number: H04L45/507 ,  H04L45/04 ,  H04L45/50

Abstract: An apparatus and method for enabling interoperability of segment routing (SR) enabled nodes and LDP enabled nodes in a network domain. In one embodiment, the method may include mapping a first node identifier (ID) to a first segment ID in memory, wherein the first node ID uniquely identifies a first node within a network domain, and wherein the first node is not SR enabled. A message is generated and subsequently transmitted directly or indirectly to another node within the network domain, wherein the message comprises the first node ID mapped to the first segment ID, and wherein the other node is SR enabled.

Abstract translation: 一种用于实现网络域中的段路由（SR）使能节点和启用LDP的节点的互操作性的装置和方法。 在一个实施例中，该方法可以包括将第一节点标识符（ID）映射到存储器中的第一段ID，其中第一节点ID唯一地标识网络域内的第一节点，并且其中第一节点不是SR启用的。 生成消息并随后直接或间接地发送到网络域内的另一个节点，其中消息包括映射到第一段ID的第一节点ID，并且其中另一个节点被启用SR。

公开(公告)号：US20140341222A1

公开(公告)日：2014-11-20

申请号：US14279659

申请日：2014-05-16

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Stefano B. Previdi ,  Steven W. Ulrich ,  Ahmed R. Bashandy

IPC: H04L12/723

CPC classification number: H04L45/507 ,  H04L45/04 ,  H04L45/50

Abstract: An apparatus and method for enabling interoperability of segment routing (SR) enabled nodes and LDP enabled nodes in a network domain. In one embodiment, the method may include mapping a first node identifier (ID) to a first segment ID in memory, wherein the first node ID uniquely identifies a first node within a network domain, and wherein the first node is not SR enabled. A message is generated and subsequently transmitted directly or indirectly to another node within the network domain, wherein the message comprises the first node ID mapped to the first segment ID, and wherein the other node is SR enabled.

Abstract translation: 一种用于实现网络域中的段路由（SR）使能节点和启用LDP的节点的互操作性的装置和方法。 在一个实施例中，该方法可以包括将第一节点标识符（ID）映射到存储器中的第一段ID，其中第一节点ID唯一地标识网络域内的第一节点，并且其中第一节点不是SR启用的。 生成消息并随后直接或间接地发送到网络域内的另一个节点，其中消息包括映射到第一段ID的第一节点ID，并且其中另一个节点被启用SR。

公开(公告)号：US20140269721A1

公开(公告)日：2014-09-18

申请号：US14096358

申请日：2013-12-04

Applicant: Cisco Technology, Inc.

Inventor： Ahmed R. Bashandy ,  Clarence Filsfils ,  David D. Ward

IPC: H04L12/723

CPC classification number: H04L41/12 ,  H04L12/4633 ,  H04L45/04 ,  H04L45/12 ,  H04L45/46 ,  H04L45/50 ,  H04L45/507 ,  H04L45/54 ,  H04L45/74 ,  H04L45/745 ,  H04L47/724 ,  H04L49/608

Abstract: An apparatus and method is disclosed for segment routing (SR) over label distribution protocol (LDP). In one embodiment, the method includes a node receiving a packet with an attached segment ID. In response, the node may attach a label to the packet. Thereafter, the node may forward the packet with the attached label and segment ID to another node via a label switched path (LSP).

Abstract translation: 公开了一种用于通过标签分发协议（LDP）的分段路由（SR）的装置和方法。 在一个实施例中，该方法包括接收具有附加段ID的分组的节点。 作为响应，节点可以附加到分组的标签。 此后，节点可以经由标签交换路径（LSP）将具有附加标签和分段ID的分组转发到另一节点。