Method and device for acquiring forwarding information

A technology for forwarding information and forwarding entries. It is applied in digital transmission systems, data exchange networks, electrical components, etc., and can solve the problem of inability to determine the service flow of micro-burst packets.

Pending Publication Date: 2021-07-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, network devices cannot determine the service fl

Method used

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  • Method and device for acquiring forwarding information
  • Method and device for acquiring forwarding information
  • Method and device for acquiring forwarding information

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0042] To facilitate understanding, firstly, a brief introduction is given to the mechanism of packet forwarding by network devices.

[0043] see figure 1 , which is a schematic structural diagram of a network device. Such as figure 1 As shown, the network device 100 may include a forwarding engine (forwarding engine, FE) 101 and a traffic management (traffic management, TM) module 102 . The FE101 and the TM module 102 may be integrated on one chip, or may be located on two different chips, which is not specifically limited in this embodiment of the present application. The FE 101 can be used to obtain messages from other network devices, analyze the messages, and obtain information such as the outgoing interface and next hop for forwarding the messages in combination with the locally stored forwarding entries. Specifically, FE 101 can identify the service flow to which the packet belongs. The TM module 102 is used to implement queue scheduling. For example, one interface ...

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Abstract

The embodiment of the invention discloses a method for obtaining forwarding information, and the method comprises the steps: a first device can obtain a service parameter identifier of a first message cached by a first queue when the first queue is congested because a micro-burst phenomenon can cause the congestion of the exit queue, and the first queue is the exit queue in the first device. The service parameter identifier of the first message is used for indicating a parameter for forwarding the first message. The parameter used for forwarding the first message can be used for indicating the service flow to which the first message belongs. The first device can determine the service flow to which the first message belongs through the service parameter identifier of the first message, i.e., determine the service flow influenced by the congestion of the first queue. And the first device can further execute the first operation according to the service parameter identifier of the first message. By using the method, the first device can determine the service influenced by congestion when the first queue is congested, and execute the first operation to reduce the influence of the congestion of the first queue on the service flow to which the first message belongs.

Description

technical field [0001] The present application relates to the field of equipment management, in particular to a method and device for acquiring forwarding information. Background technique [0002] The network device can be used to forward packets, and a microburst may occur in the process of forwarding packets by the network device. Microburst refers to the phenomenon that a large amount of burst data is received in a short period of time, so that it approaches or even exceeds the port bandwidth and buffer capacity in a short period of time. Microbursts will have certain impacts on forwarded packets, for example, increase the packet forwarding delay or cause packet loss. When a microburst occurs, it is necessary to determine the service flow affected by the microburst. Currently, the network device cannot determine the service flow corresponding to the packet involved in the microburst. Contents of the invention [0003] The embodiment of the present application provid...

Claims

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Application Information

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IPC IPC(8): H04L12/801H04L12/865H04L29/06H04L47/30H04L47/6275
CPCH04L47/12H04L47/6275H04L69/22H04L49/90H04L47/10H04L47/30H04L47/2458H04L47/122H04L45/22H04L45/745H04L47/6215H04L49/9036
Inventor 刘敏
Owner HUAWEI TECH CO LTD
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