Segment routing using a remote forwarding adjacency identifier
AssigneeCisco Technology, Inc.
InventorsStefano B. Previdi, Clarence Filsfils
Life of this patent
Estimating the term…
Abstract
Disclosed is an apparatus and method for segment routing using a remote forwarding adjacency identifier. In one embodiment, a first node in a network receives a packet, wherein the packet is received with a first segment-ID and another segment ID attached thereto. The first node detaches the first and the other segment IDs from the packet. Then the first node attaches a first label to the packet. Eventually, the first node forwards the packet with the attached first label directly to a second node in the network. In one embodiment, the other segment ID corresponds to a forwarding adjacency or tunnel label switched path between the first node and another node.
Claims20
A method comprising:
- receiving a packet at a first node in a network, wherein the packet is received with a first segment-ID and another segment ID attached thereto;
- detaching the first and the other segment IDs from the packet;
- attaching a first label to the packet after the first and the other segment IDs are detached;
- forwarding the packet with the attached first label directly to a second node in the network.
A non-transitory computer readable memory (CRM) storing instructions, wherein a node is capable of implementing a method in response to executing the instructions, the method comprising:
- receiving a packet, wherein the packet is received with a first segment-ID and another segment ID attached thereto;
- detaching the first and the other segment IDs from the packet;
- attaching a first label to the packet after the first and the other segment IDs are detached;
- forwarding the packet with the attached first label directly to a second node.
A system comprising:
- an edge node configured to attach a first segment-ID and another other segment ID to a packet before the edge node forwards the packet and attached segment-IDs towards a first node;
- the first node configured to
- detach the first and the other segment IDs from the packet,
- attach a first label to the packet after the first and the other segment IDs are detached, and
- forward the packet with the attached first label directly to a second node.
Dependencies are inferred from the claim text.