On 10/10/2016 5:33 PM, John R Pierce wrote:
> I've got a pair of identical CentOS 6.7 servers, with SuperMicro
> X8DTE-F motherboards, these have 2 each Intel 82574L ethernet ports.
> The eth0 ports are plugged in with 10' runs of brand new cat 5e cable
> to a Cisco Nexxus 9000 switch (provided by the data center).
>
> These servers keep coming up at 100baseT rather than gigE. I've
> swapped ports and cables with a different server, that server gets
> gigE but these supermicro's are stuck at 100baseT regardless of the
> port or cableused.
>
> 'ethtool eth0' says its gigE, but 'mii-tool -v eth0' says its
> 100baseT and doesn't even list gigE as an option, and the cisco
> switches see it as 100baseT too.
>
> anyone else run into anything like this before?
oh.
# mii-tool -v eth0
eth0: negotiated, link ok
product info: vendor 00:50:43, model 11 rev 1
basic mode: autonegotiation enabled
basic status: autonegotiation complete, link ok
capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
advertising: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
flow-control
# ethtool eth0
Settings for eth0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
MDI-X: on (auto)
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes
--
john r pierce, recycling bits in santa cruz