No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

AR Router Troubleshooting Guide

This Product Documentation provides guidance for maintaining AR Enterprise Router, covering common information collection and fault diagnostic commands, typical fault troubleshooting guide, and troubleshooting.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
The Delay in the EF Queue Is Long

The Delay in the EF Queue Is Long

Problem Description

The delay refers to the period from the time packets start to be transmitted to the time packet transmission is completed. Generally, the delay on a high-speed device is smaller than 10 ms.

Cause Analysis

  1. The CPU usage of the device is too high. As a result, the packet processing speed is reduced.
  2. There are too many burst packets. The configurations need to be changed so that packets can be processed correctly.
  3. Other network devices may cause the delay. Check the configuration of these network devices.

Procedure

If there are too many burst packets, perform the following operations to solve the problem:

  1. Run the display traffic policy statistics command to check statistics on packets matching a traffic policy on an interface. Check the value of Dropped to determine whether packets are lost. If packets are lost, there may be too many packets.
  2. Run the queue afqueue ef, or queue llq command to configure the maximum allowed bandwidth to ensure that packets can pass through.

Suggestion

Prevent a high CPU usage and preferentially configure Low Latency Queuing (LLQ) during bandwidth reconfiguration. LLQ queues are a special type of EF queues and have a shorter delay.

Translation
Download
Updated: 2019-05-10

Document ID: EDOC1000079719

Views: 455182

Downloads: 4320

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next