Service function chaining network services

    公开(公告)号:US11616717B2

    公开(公告)日:2023-03-28

    申请号:US17116894

    申请日:2020-12-09

    Abstract: The disclosed technology relates to forwarding a packet in a network. The packet is received at a node, where the packet is encapsulated by a network service header (NSH) including a service path header that identifies a service path. The service path is associated with a treatment value that directs subsequent nodes to treat the encapsulated NSH packet with a quality of service treatment. A forwarding table stored in the node is evaluated to identify the service path and the treatment value of the encapsulated NSH packet and a quality of service treatment is determined for the encapsulated NSH packet. The encapsulated NSH packet is forwarded to the subsequent nodes based on the service path indicated in the forwarding table and in accordance with the quality of service treatment corresponding to the treatment value identified in the forwarding table.

    MPLS EXTENSION HEADERS FOR IN-NETWORK SERVICES

    公开(公告)号:US20210135986A1

    公开(公告)日:2021-05-06

    申请号:US17147208

    申请日:2021-01-12

    Abstract: Described herein are methods and devices (e.g., routers) that add in-network services to a multiprotocol label switching (MPLS) network. A method can include a router of the MPLS network receiving a packet and modifying the packet by adding one or more MPLS extension headers, adding a header of the extension header(s), and adding an indication within an MPLS label stack that one or more MPLS extension headers have been added to the packet. The method can also include the router forwarding the packet as modified to another router of the MPLS network. In certain embodiments, an extension header label (EHL) within a label value field of a label stack entry indicates that one or more MPLS extension headers have been added to the packet. In other embodiments, a forward equivalent class (FEC) indicates that one or more MPLS extension headers follow the MPLS label stack.

    MPLS extension headers for in-network services

    公开(公告)号:US11582148B2

    公开(公告)日:2023-02-14

    申请号:US17147208

    申请日:2021-01-12

    Abstract: Described herein are methods and devices (e.g., routers) that add in-network services to a multiprotocol label switching (MPLS) network. A method can include a router of the MPLS network receiving a packet and modifying the packet by adding one or more MPLS extension headers, adding a header of the extension header(s), and adding an indication within an MPLS label stack that one or more MPLS extension headers have been added to the packet. The method can also include the router forwarding the packet as modified to another router of the MPLS network. In certain embodiments, an extension header label (EHL) within a label value field of a label stack entry indicates that one or more MPLS extension headers have been added to the packet. In other embodiments, a forward equivalent class (FEC) indicates that one or more MPLS extension headers follow the MPLS label stack.

    Segment routing in MPLS network
    5.
    发明授权

    公开(公告)号:US11201820B2

    公开(公告)日:2021-12-14

    申请号:US16940323

    申请日:2020-07-27

    Abstract: Described herein are methods and devices (e.g., routers) for performing segment routing over a multiprotocol label switching (MPLS) network. A method can include a router of the MPLS network receiving a packet, and the router modifying the packet by adding a segment routing header (SRH) type MPLS extension header. The SRH type MPLS extension header includes one or more segment identifiers (SIDs) that collectively provide a SID list for use in segment routing. The method further comprises the router copying one of the one or more SIDs in the SRH type MPLS extension header to a top of an MPLS label stack, and the router forwarding the packet as modified to another router of the MPLS network based on the one of the one or more SIDs included in a label stack entry at the top of the MPLS label stack.

    SERVICE FUNCTION CHAINING NETWORK SERVICES

    公开(公告)号:US20210119909A1

    公开(公告)日:2021-04-22

    申请号:US17116894

    申请日:2020-12-09

    Abstract: The disclosed technology relates to forwarding a packet in a network. The packet is received at a node, where the packet is encapsulated by a network service header (NSH) including a service path header that identifies a service path. The service path is associated with a treatment value that directs subsequent nodes to treat the encapsulated NSH packet with a quality of service treatment. A forwarding table stored in the node is evaluated to identify the service path and the treatment value of the encapsulated NSH packet and a quality of service treatment is determined for the encapsulated NSH packet. The encapsulated NSH packet is forwarded to the subsequent nodes based on the service path indicated in the forwarding table and in accordance with the quality of service treatment corresponding to the treatment value identified in the forwarding table.

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