This is kinda of why it makes sense to purchase at least one license. I would start with a loop back test on both ends. Dirty ports happen. Did you grab the most recent version of ethtool and build it? > -----Original Message----- > From: CentOS <centos-bounces at centos.org> On Behalf Of Giles Coochey > Sent: Tuesday, July 2, 2019 9:19 AM > To: CentOS mailing list <centos at centos.org> > Subject: [CentOS] Anyone with RedHat Subscription? > > Does Anyone with a RedHat subscription able to give a hint as to what > the solution to the following knowledgebase article is: > > https://access.redhat.com/solutions/2801051 > > I'm having a similar issue with an SFP on a Centos host, and am > searching for a way to view Optical RX/TX Power on the SFP. > > From the switch side, I'm not seeing any RX Power from the Centos host. > > Thanks in advance > > Giles > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos