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Oracle Linux: Link Speed of Ethernet Interface is Changed from 1Gbps to 100Mbps without Configuration Changes (Doc ID 2169185.1)

Last updated on OCTOBER 16, 2022

Applies to:

Linux OS - Version Oracle Linux 5.0 and later
Oracle Cloud Infrastructure - Version N/A and later
Linux x86-64

Symptoms

A NIC, which was linked up as 1Gbps with auto-negotiation at the OS boot time, is suddenly changed to be 100Mbps without any operations. This would happen not only with link speed but also with others like duplex etc.

For example, /var/log/messages shows:

  

Cause

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In this Document
Symptoms
Cause
Solution
References


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