20 Mar
2012
20 Mar
'12
4:33 p.m.
Michael Simpson wrote:
On 20 March 2012 14:29, sebastian centos@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