this is a PCI-E x1 network adapter detected as "Ethernet controller: Intel Corporation 82574L Gigabit Network Connection" tested on Ubuntu 9.04
I know it is a very basic simple question, but I am not able to decide what is correct.
Well we have an IBM X3100 m4 server and centos 6.5 is installed.
I am using ubuntu 12.10 and have two network cards.
One NIC is D-Link and other is intel with motherboard.
00:19.0 Ethernet controller: Intel Corporation 82578DC Gigabit Network Connection (rev 06)
02:00.0 Ethernet controller: D-Link System Inc DGE-528T Gigabit Ethernet Adapter (rev 10)
Both have gigabit support, but when I am using for my experiment and like NIC bonding, I got only 1.4Gbps