Ethtool eth0

:/etc# ethtool eth0
Settings for eth0:
        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        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: 100Mb/s
        Duplex: Full
        Port: Twisted Pair
        PHYAD: 1
        Transceiver: internal
        Auto-negotiation: on
        MDI-X: off
        Supports Wake-on: pumbg
        Wake-on: g
        Current message level: 0x00000001 (1)
        Link detected: yes

dmesg | grep eth0
e1000e 0000:02:00.0: eth0: (PCI Express:2.5GT/s:Width x1) 00:1b:21:d5:4f:89
e1000e 0000:02:00.0: eth0: Intel(R) PRO/1000 Network Connection
e1000e 0000:02:00.0: eth0: MAC: 4, PHY: 8, PBA No: E46981-006
ADDRCONF(NETDEV_UP): eth0: link is not ready
e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None
e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO
ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
eth0: no IPv6 routers present

ethtool -i eth0
driver: e1000e
version: 1.9.5-NAPI
firmware-version: 1.8-0
bus-info: 0000:02:00.0

dmesg |grep TSO
e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO

# ifconfig
eth0      Link encap:Ethernet  HWaddr 90:E6:BA:B6:EE:71
          inet addr:93.78.xxx.154  Bcast:93.78.xxx.155  Mask:255.255.255.248
          inet6 addr: fe80::92e6:baff:feb6:ee71/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5786439143 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6107166303 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:506332824507 (471.5 GiB)  TX bytes:1305265051273 (1.1 TiB)
          Interrupt:58 Base address:0xe000

eth0:0    Link encap:Ethernet  HWaddr 90:E6:BA:B6:EE:71
          inet addr:192.168.0.1  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:58 Base address:0xe000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:6306977 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6306977 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:698022905 (665.6 MiB)  TX bytes:698022905 (665.6 MiB)

server 1
ADDRCONF(NETDEV_UP): eth0: link is not ready
e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None
e1000e 0000:02:00.0: eth0: 10/100 speed: disabling TSO
ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Please use
nf_conntrack.acct=1 kernel parameter, acct=1 nf_conntrack module option or
sysctl net.netfilter.nf_conntrack_acct=1 to enable it.

server 2
ADDRCONF(NETDEV_UP): eth0: link is not ready
e1000e: eth0 NIC Link is Up 100 Mbps Half Duplex, Flow Control: None
e1000e 0000:03:00.0: eth0: Autonegotiated half duplex but link partner cannot autoneg.  Try forcing full duplex if link gets many collisions.
e1000e 0000:03:00.0: eth0: 10/100 speed: disabling TSO
ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready