[CentOS] disable auto-negotiation gigabit ethernet

Tue Mar 20 15:47:21 UTC 2012
sebastian <centos at secretusenet.com>

Am 20.03.2012 16:33, schrieb m.roth at 5-cent.us:
> Michael Simpson wrote:
>> 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
> Two more things:
>     a) make sure the router/switch isn't pegged or being changed to slower
>     b) are your cables ok for gigabit. I know this sounds absurd, but I,
>          personally, have changed cables, and it made the difference
>        mark
Thanks, but is a remote-server, the server is in another datacenter. I 
can not change or check the cables/switch - and the stuff in the 
datacenter is not very usefull. I'm hoping to solve the problem with 
disable the auto-negotiation.

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