Link selection for communication with a service function cluster
First Claim
Patent Images
1. A method, comprising:
- receiving, at a service function forwarder (SFF), a first packet comprising a first service function (SF) label;
referencing a label forwarding table to identify a first link for the first SF label;
popping the first SF label from the first packet;
in response to the popping, inserting into the first packet a physical address associated with the first link; and
forwarding the packet to a service function cluster (SFC) via the first link, the SFC being at remote location from the SFF.
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Abstract
Systems, methods, and computer-readable media for improving the reliability of service function (SF) application in a service function chain (SFC) are provided. In some aspects, the subject technology facilitates automatic service function type validation by a service function forwarder (SFF), for example, by using a probe configured query a function type of a SF module associated with the validating SFF.
350 Citations
20 Claims
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1. A method, comprising:
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receiving, at a service function forwarder (SFF), a first packet comprising a first service function (SF) label; referencing a label forwarding table to identify a first link for the first SF label; popping the first SF label from the first packet; in response to the popping, inserting into the first packet a physical address associated with the first link; and forwarding the packet to a service function cluster (SFC) via the first link, the SFC being at remote location from the SFF. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system comprising a service function forwarder (SFF) having a non-transitory computer readable memory and a processor configured to cooperate with instructions in memory to perform operations comprising:
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receiving, at the SFF, a first packet comprising a first service function (SF) label; referencing a label forwarding table to identify a first link for the first SF label; popping the first SF label from the first packet; in response to the popping, inserting into the first packet a physical address associated with the first link; and forwarding the packet to a service function cluster (SFC) via the first link, the SFC being at remote location from the SFF. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A non-transitory computer readable media including instruction which when executed by a processor perform operations comprising:
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receiving, at a service function forwarder (SFF), a first packet comprising a first service function (SF) label; referencing a label forwarding table to identify a first link for the first SF label; popping the first SF label from the first packet; and in response to the popping, inserting into the first packet a physical address associated with the first link; and forwarding the packet to a service function cluster (SFC) via the first link, the SFC being at remote location from the SFF. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification