Point-to-point protocol flow control extension
First Claim
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1. A method of operating a packet-processing device comprising:
- receiving a point-to-point protocol packet stream from a point-to-point protocol peer over a point-to-point full-duplex data link;
analyzing whether conditions at the device support an adjustment in the flow rate of the received packet stream; and
when an adjustment in the flow rate is supported, generating a point-to-point protocol flow control frame requesting that the peer adjust the flow rate of the packet stream, and sending the point-to-point protocol flow control frame to the peer over the data link while the packet-processing device is receiving the point-to-point protocol packet stream.
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Abstract
Method and apparatus are disclosed for flow control over Point-to-Point Protocol (PPP) data links. A method of negotiating such flow control between two PPP peers is disclosed, along with methods for operating flow control across a PPP link. In one embodiment, flow control frames carry an IEEE802.3x MAC control frame payload—the PPP implementation repackages such frames as MAC control frames and passes them to a MAC, which performs flow control. In another embodiment, flow control frames allow flow control commands to be applied differently to different service classes such that PPP flow can be controlled on a per-class basis.
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10 Claims
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1. A method of operating a packet-processing device comprising:
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receiving a point-to-point protocol packet stream from a point-to-point protocol peer over a point-to-point full-duplex data link; analyzing whether conditions at the device support an adjustment in the flow rate of the received packet stream; and when an adjustment in the flow rate is supported, generating a point-to-point protocol flow control frame requesting that the peer adjust the flow rate of the packet stream, and sending the point-to-point protocol flow control frame to the peer over the data link while the packet-processing device is receiving the point-to-point protocol packet stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification