[CentOS] disable auto-negotiation gigabit ethernet

Michael Simpson mikie.simpson at gmail.com
Tue Mar 20 11:09:06 EDT 2012


On 20 March 2012 14:29, sebastian <centos at secretusenet.com> wrote:
> I can not disable the auto-negotiation (eth1) on my centos 6.2 via
> ethtool or /etc/sysconfig/network-scripts/ifcfg-eth1
>

Autonegotiation is mandatory for 1000BASE-T as both sides have to work
out which pairs they are going to use.
Check:
1)cable
2)switchport
if those are ok then you probably have a driver/NIC problem

mike


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