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S12700 V200R013C00 Configuration Guide - Interface Management

This document describes the interface management configuration, including basic interface configuration, Ethernet interface configuration, and logical interface configuration.
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Why Is a Non-Connected Interface Up?

Why Is a Non-Connected Interface Up?

If loopback internal command has been configured on the interface to enable internal loopback detection, the interface is Up.

You can run the display interface gigabitethernet 1/0/1 command in any view to check whether internal loopback detection is enabled on GE1/0/1.
<HUAWEI> display interface gigabitethernet 1/0/1
Port Mode: FORCE COPPER         
Speed : 1000,   Loopback: INTERNAL             
Duplex: FULL,   Negotiation: ENABLE     
Mdi   : AUTO,   Flow-control: DISABLE 

The command output shows that internal loopback detection is enabled on the interface.

Updated: 2019-04-08

Document ID: EDOC1100065645

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