UNIX for Dummies Questions & Answers

In recent time i have observed that two identical servers are behaving different in terms of network.

For example after reboot one of the server was taking some time to get into network after starting the network service.

After digging more into the system commands i came to know that they two are running different ethernet controllers Intel 82575EB Gigabit Ethernet Controller Intel 82576 Gigabit Ethernet Controller respectively.

The problematic server having Intel 82576 Gigabit Ethernet Controller.

More digging reveals that problematic server running igb drivers where as good one running both igb and e1000
problematic server

Code:

# lsmod | egrep 'pcnet32|vmxnet|e1000|igb'
igb                   104197  0

good one

Code:

# lsmod | egrep 'pcnet32|vmxnet|e1000|igb'
e1000e                127249  0
igb                   104197  0

Is there any way i can add e1000e driver on problematic one.

i tried running modprobe e1000e on problematic server but after reboot it showed following result.

Code:

# modprobe -l | egrep 'pcnet32|vmxnet|e1000|igb'
/lib/modules/2.6.18-128.2.1.4.25.el5xen/kernel/drivers/net/e1000/e1000.ko
/lib/modules/2.6.18-128.2.1.4.25.el5xen/kernel/drivers/net/e1000e/e1000e.ko
/lib/modules/2.6.18-128.2.1.4.25.el5xen/kernel/drivers/net/igb/igb.ko
/lib/modules/2.6.18-128.2.1.4.25.el5xen/kernel/drivers/net/pcnet32.ko
# lsmod | egrep 'pcnet32|vmxnet|e1000|igb'
igb                   104197  0

Any other way of getting around this problem would be appreciated.