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Configuration Guide - Device Management

S7700 and S9700 V200R013C00

This document describes the configurations of Device Management, including device status query, hardware management, CSS, SVF, PoE, OPS, OIDS, energy-saving management, information center, fault management, NTP, synchronous ethernet, PTP.
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Checking the CSS Link Connectivity During CSS Card Clustering

Checking the CSS Link Connectivity During CSS Card Clustering

Context

If a CSS link is Up, but packet loss or error packets are found on the CSS link or the CSS status is unstable, check connectivity of the CSS link to analyze the cause. By performing a loopback test on the CSS link, determine whether the CSS link is working normally.

The process of a loopback test on a CSS link is as follows:
  1. Check the port status. If the tested port status is Down, perform a local loopback test and export the test result.
  2. If the tested port status is Up, perform a connectivity test on service packets. If all service packets pass the test, export the test result and there is no need to perform a loopback test. If some service packets fail the test, perform loopback tests including local loopback test and remote loopback test.
    • If both local and remote loopback tests succeed, export the test result.
    • If the local loopback test fails, do not perform a remote loopback test, export the test result directly, and give suggestions on recommended operations.
    • If the local loopback test succeeds but the remote loopback test fails, export the test result and give suggestions on recommended operations.
NOTE:
  • This command is supported in a CSS set up using VS04 CSS cards or using VS08 CSS cards.

  • When this command is executed on a CSS port to perform a loopback test on the CSS link, traffic on this link is switched to other CSS links. Therefore, a loopback test can be performed only when at least two links are available between the CSS cards. If bandwidth on the CSS links is low, performing a loopback test may affect running services.

Procedure

  1. Run the system-view command to enter the system view.
  2. Run the css link port port test [ times times | package-size package-size | interval interval | verbose ] * command to perform a loopback test on a CSS link and determine its connectivity according to the test result.
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Updated: 2019-04-20

Document ID: EDOC1100065738

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