Auto-negotiation method and device based on priority flow control
A flow control and self-negotiation technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as occupying bandwidth and affecting normal traffic forwarding, and achieve the effect of utilizing bandwidth, suppressing transmission, and ensuring traffic forwarding
Active Publication Date: 2020-12-04
苏州盛科科技有限公司
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Problems solved by technology
However, in this solution, as long as the port is congested, the switch will send a flow control frame to the port of the upstream device, which will occupy the communication bandwidth with the upstream device, so it will affect the forwarding of normal traffic to a certain extent.
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[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.
[0035] In the self-negotiation method and device based on priority flow control disclosed by the present invention, the local device and the peer device will notify The peer device suppresses the sending of invalid flow control frames of the peer device, effectively utilizes the bandwidth, and ensures as much as possible the traffic forwarding from the peer device to the local device.
[0036] Such as image 3 As shown, a self-negotiation method based on priority flow control disclosed by the present invention includes an active self-negotiation method and a passive self-negotiation method, wherein,
[0037] Active auto-negotiation means that when the local device enables the PFC (Priority-based Flow Control, priority-based flow control) flow control frame receiving function, the loc...
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The invention discloses an auto-negotiation method and device based on priority flow control. The method comprises the steps that home terminal equipment transmits an auto-negotiation notification message to opposite terminal equipment, and the auto-negotiation notification message comprises the flow control frame receiving priority of the home terminal equipment; after receiving the auto-negotiation notification message, the opposite-end equipment checks whether the enabled flow control frame sending priority of the opposite-end equipment corresponds to the flow control frame receiving priority or not, if not, the flow control frame sending function of the corresponding priority is closed, and an auto-negotiation reply message is sent to the home-end equipment; and after receiving the auto-negotiation reply message, the home terminal equipment stops sending the auto-negotiation announcement message, and the negotiation is completed. According to the invention, the sending of invalid flow control frames of the opposite-end equipment can be inhibited, the bandwidth is effectively utilized, and the flow forwarding from the opposite-end equipment to the local-end equipment is ensuredas much as possible.
Description
technical field [0001] The invention relates to a flow control technology, in particular to a self-negotiation method and device based on priority flow control. Background technique [0002] Flow control frames can implement a simple stop-start form of flow control. If a local device wants to prevent the arrival of upstream traffic, it can send a flow control frame with a time parameter to the upstream device, which indicates the waiting time before the upstream device continues to send packets. When the upstream device receives the flow control frame, it will stop sending packets at the corresponding time according to the time parameter carried in the frame. When this time expires, if no subsequent flow control frame is received, the upstream device will continue to send packets. For the local device, if the congestion disappears when the upstream device stops sending packets, it can also send a flow control frame with a time parameter of 0 to the upstream device to cance...
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IPC IPC(8): H04L12/851H04L12/801
CPCH04L47/2433H04L47/12
Inventor 胡致远杨曙军李晨
Owner 苏州盛科科技有限公司