Segment routing over label distribution protocol
First Claim
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1. A method comprising:
- receiving a packet with an attached first segment ID, whereinthe packet is received by a segment routing/label distribution protocol (SR/LDP) node,the attached first segment ID is advertised in a segment ID advertisement, andthe attached first segment ID identifies a nodal segment or an adjacency segment;
attaching a first label to the packet; and
forwarding the packet with the attached first label and the attached first segment ID toward a first node, whereinthe first node comprises a label distribution protocol (LDP) node.
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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).
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20 Claims
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1. A method comprising:
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receiving a packet with an attached first segment ID, wherein the packet is received by a segment routing/label distribution protocol (SR/LDP) node, the attached first segment ID is advertised in a segment ID advertisement, and the attached first segment ID identifies a nodal segment or an adjacency segment; attaching a first label to the packet; and forwarding the packet with the attached first label and the attached first segment ID toward a first node, wherein the first node comprises a label distribution protocol (LDP) node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus comprising:
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a first node comprising an input interface configured to receive a packet with an attached first segment ID, wherein the first node comprises a segment routing/label distribution protocol (SR/LDP) node, the first segment ID is advertised in a segment ID advertisement, and the attached first segment ID identifies a nodal segment or an adjacency segment; the first node comprising a memory structure that maps the first segment ID directly or indirectly to a first label; the first node comprising a module configured to attach the first label to the packet; and the first node comprising an output interface configured to transmit the packet to a second node with the attached first label and the attached first segment ID, wherein the second node comprises a label distribution protocol (LDP) node. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A system comprising:
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a first node comprising an input interface configured to receive a packet with an attached first segment ID, wherein the first node comprises a segment routing/label distribution protocol (SR/LDP) node, the first segment ID is advertised in a segment ID advertisement, and the attached first segment ID identifies a nodal segment or an adjacency segment; the first node comprising a means for mapping the first segment ID directly or indirectly to a first label; the first node comprising a means for attaching the first label to the packet; and the first node comprising an output interface configured to transmit the packet to a second node with the attached first label and the attached first segment ID, wherein the second node comprises a label distribution protocol (LDP) node. - View Dependent Claims (17, 18, 19, 20)
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Specification