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NIC port flapping "Link up" "Link down" error seen in messages. (Doc ID 2763659.1)

Last updated on JUNE 15, 2021

Applies to:

Oracle VM - Version 3.0.1 to 3.4.6 [Release OVM30 to OVM34]
Linux OS - Version Oracle Linux 6.0 with Unbreakable Enterprise Kernel [2.6.32] and later
Information in this document applies to any platform.

Symptoms

On : 3.4.6 version, Dom0, HostOS, Management Domain

NIC Driver: tg3

 

ERROR
-----------------------
Feb 2 09:26:38 XXXXXXXXXXXXXXX kernel: [59380.600043] tg3 0000:01:00.0 em3: Link is down
Feb 2 09:26:42 XXXXXXXXXXXXXXX kernel: [59384.971382] tg3 0000:01:00.0 em3: Link is up at 1000 Mbps, full duplex
Feb 2 09:26:55 XXXXXXXXXXXXXXX kernel: [59397.495915] tg3 0000:01:00.0 em3: Link is down
Feb 2 09:26:59 XXXXXXXXXXXXXXX kernel: [59401.434355] tg3 0000:01:00.0 em3: Link is up at 1000 Mbps, full duplex
Feb 2 09:27:07 XXXXXXXXXXXXXXX kernel: [59409.462756] tg3 0000:01:00.0 em3: Link is down
Feb 2 09:27:11 XXXXXXXXXXXXXXX kernel: [59413.401591] tg3 0000:01:00.0 em3: Link is up at 1000 Mbps, full duplex
Feb 2 09:27:24 XXXXXXXXXXXXXXX kernel: [59426.575403] tg3 0000:01:00.0 em3: Link is down
Feb 2 09:27:27 XXXXXXXXXXXXXXX kernel: [59430.215772] tg3 0000:01:00.0 em3: Link is up at 1000 Mbps, full duplex
Feb 2 09:27:46 XXXXXXXXXXXXXXX kernel: [59448.612398] tg3 0000:01:00.0 em3: Link is down

Changes

 None

Cause

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In this Document
Symptoms
Changes
Cause
Solution


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