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Data forwarding method and related equipment

A technology of data and data units, which is applied in the field of Ethernet switches, and can solve problems such as disconnection of outgoing port data

Pending Publication Date: 2022-05-06
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] This application aims at the scenario where the rate of the ingress port is lower than the rate of the egress port. In order to avoid the problem of data being disconnected at the egress port, it is proposed that the switch can forward data through partial cut-through switching.

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  • Data forwarding method and related equipment
  • Data forwarding method and related equipment
  • Data forwarding method and related equipment

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Embodiment Construction

[0034] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. The term "and / or" appearing in this application may be an association relationship describing associated objects, indicating that there may be three relationships, for example, A and / or B may indicate: A exists alone, and A and B exist simultaneously , there are three cases of B alone. In addition, the character " / " in this application generally indicates that the contextual objects are an "or" relationship. The terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein are capable of opera...

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Abstract

A data forwarding method and related equipment are applied to the field of switches, and are used for preventing data to be forwarded from being snapped and reducing time delay when an ingress port rate of a switch is smaller than an egress port rate. According to the method and the device, the switch can determine the cache length of the data needing to be cached according to the total length of the data to be forwarded and the rate difference between the rate of the input port and the rate of the output port. When the length of the cached data reaches the cache length, the output port sends the data, and in the time period when the output port sends the part of cached data, the synchronous input port can continue to cache the remaining data into the output port cache, so that the output port can continue to send the remaining data after sending the first part of cached data. And the situation that data are broken by pulling is avoided. And meanwhile, the switch only needs to cache part of data, so that compared with the caching of the whole data to be forwarded, the data is ensured not to be broken, and the time delay is reduced at the same time.

Description

technical field [0001] The present application relates to the technical field of Ethernet switches, in particular to a data forwarding method and related equipment. Background technique [0002] Currently, an Ethernet switch generally includes two modes, a store-and-forward mode and a cut-through mode, when forwarding data at a sending end and a receiving end. Among them, in the store-and-forward mode, the switch first needs to cache the entire data. After the data passes the verification, the switch takes out the address, finds the address of the outgoing port to be sent through the lookup table, and forwards the data to the corresponding outgoing port. The store-and-forward method needs to cache the entire data, so the delay in data processing is large. [0003] Compared with the store-and-forward method, the switch in the cut-through switching method does not need to cache the entire data when forwarding data. When the switch receives the data header and parses out the ...

Claims

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Application Information

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IPC IPC(8): H04L49/25H04L49/253
CPCH04L49/252H04L49/251H04L49/253
Inventor 孙德胜杨春生丁力
Owner HUAWEI TECH CO LTD
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