This knowledge base has moved to the documentation site. Please visit the knowledge base here for the most up to date content. This site is no longer maintained.

Can't Configure 10G or 40G Port for 10/100M Speed

Follow

Issue

I am unable to set a 10G or 40G port to 10/100M speed. I am unable to establish a link between a 10G or 40G port and a 10/100M Ethernet segment.

Environment

Cumulus Linux, all versions

Solution

Use an intervening 1G switch to connect to the slower Ethernet segment.  The following configuration, for example, can be used to set a 10G port to 1G:

auto swp1
iface swp1 
    link-speed 1000 
    link-duplex full 
    link-autoneg off

For more information on configuring port speeds, see the Cumulus Linux User Guide:

Root Cause

Speed reduction from 10G or 40G to 10/100M is unsupported at the hardware layer.

Comments

This support portal has moved

Cumulus Networks is now part of the NVIDIA Networking Business Unit! The NVIDIA Cumulus Global Support Services (GSS) team has merged its operations with the NVIDIA Mellanox support services team.

You can access NVIDIA Cumulus support content from the Mellanox support portal.

You open and update new cases on the Mellanox support portal. Any previous cases that have been closed have been migrated to the Mellanox support portal.

Cases that are still open on the Cumulus portal will continue to be managed on the Cumulus portal. Once these cases close, they will be moved to the Mellanox support portal.

Powered by Zendesk