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Advanced O&M Command Reference

OceanStor 2800 V5 V500R007

This document is applicable to OceanStor 2800 V5. Based on the CLI, this document describes how to use various commands classified by functions and how to set the CLI and manage the storage system through these commands. The document that you browse online matches the latest C version of the product. Click Download to download documents of other C versions.

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show loopback test

show loopback test


The show loopback test command is used to query the result of a loopback test.


show loopback test type=? [ port_type=? ] id=? controller_id=?





type=? Type.

The value can be "port" or "disk", where:

  • "port": external port of an interface module.
  • "disk": disk port.
port_type=? Port type.

The value can be "ETH", "FC", "SAS", "COM" or "FCoE", where:

  • "ETH": network adapter port.
  • "FC": Fibre Channel port.
  • "SAS": SAS port.
  • "COM": serial port.
  • "FCoE": FCoE port.
id=? Port ID.
  • When parameter "type" is set to "port", the value can be obtained by running the "show port general" command.
  • When parameter "type" is set to "disk", the value can be obtained by running the "show disk general" command.
controller_id=? Controller ID.

The value can be obtained by running the "show controller general" command.


Developer view

Usage Guidelines



Query the result of the internal loopback test for port "0" of the network adapter in slot "A3" on controller B.

developer:/>show loopback test type=port port_type=ETH id=ENG0.A3.P0 controller_id=0B
Loopback Test Mode : Inner
Test Result : Pass
Bit Error Count : 0
Test Speed : 1G
Max Speed : 1G
Link Phy Count : 1
Max Phy Count : 1

System Response

The following table describes the parameter meanings.



Loopback Test Mode

Loopback test mode.

Test Result

Loopback test result.

Bit Error Count

Number of bit errors.

Test Speed

Loopback test rate.

Max Speed

Maximum rate supported by the module.

Link Phy Count

Number of physical links.

Max Phy Count

Maximum number of physical links.

Updated: 2020-01-17

Document ID: EDOC1000181575

Views: 724492

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