Segment routing over label distribution protocol
First Claim
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1. A method comprising:
- a segment routing and label distribution protocol (SR/LDP) node receiving an advertisement from a first node, wherein the advertisement comprises a first nodal segment ID mapped to a first IP address, wherein the first nodal segment ID is unique to a network comprising the SR/LDP node and the first node, and wherein the first IP address uniquely identifies the first node in the network;
receiving a data packet with the first nodal segment ID and a first label attached thereto, wherein the data packet is received by the SR/LDP node;
detaching the first label from the data packet;
after detaching the first label, forwarding the data packet with the attached first nodal segment ID toward the first 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).
210 Citations
20 Claims
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1. A method comprising:
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a segment routing and label distribution protocol (SR/LDP) node receiving an advertisement from a first node, wherein the advertisement comprises a first nodal segment ID mapped to a first IP address, wherein the first nodal segment ID is unique to a network comprising the SR/LDP node and the first node, and wherein the first IP address uniquely identifies the first node in the network; receiving a data packet with the first nodal segment ID and a first label attached thereto, wherein the data packet is received by the SR/LDP node; detaching the first label from the data packet; after detaching the first label, forwarding the data packet with the attached first nodal segment ID toward the first node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus comprising:
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a segment routing and label distribution protocol (SR/LDP) node configured to receive and process an advertisement from a first node, wherein the advertisement comprises a first nodal segment ID mapped to a first IP address, wherein the first nodal segment ID is unique to a network comprising the SR/LDP node and the first node, and wherein the first IP address uniquely identifies the first node in the network; the SR/LDP node comprising an input interface and an output interface, wherein the input interface is configured to receive a data packet with a first label and the first nodal segment ID attached thereto; the SR/LDP node comprising a module for detaching the first label from the data packet; the SR/LDP node comprising a forwarding module for forwarding the data packet with attached first nodal segment towards the first node via the output interface. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A system comprising:
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a segment routing and label distribution protocol (SR/LDP) node configured to receive and process an advertisement from a first node, wherein the advertisement comprises a first nodal segment ID mapped to a first IP address, wherein the first nodal segment ID is unique to a network comprising the SR/LDP node and the first node, and wherein the first IP address uniquely identifies the first node in the network; the SR/LDP node comprising an input interface and an output interface, wherein the input interface is configured to receive a data packet with a first label and the first nodal segment ID attached thereto; the SR/LDP node comprising a means for detaching the first label from the data packet; the SR/LDP node comprising a forwarding means for forwarding the data packet with attached first nodal segment towards the first node via the output interface. - View Dependent Claims (18, 19, 20)
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Specification