Ethernet Port Details

Below post will help you know how to find out available ethernet ports on server and which one is mapped to your IP. 

[root@Server network-scripts]# cat ifcfg-eth[01234567] | grep -i HWADDR
HWADDR=A0:36:9F:46:24:1C
HWADDR=A0:36:9F:46:24:1D
HWADDR=A0:36:9F:46:24:1E
HWADDR=A0:36:9F:46:24:1F
HWADDR=98:BE:94:3C:FD:AA
HWADDR=98:BE:94:3C:FD:AB
HWADDR=98:BE:94:3C:FD:AC
HWADDR=98:BE:94:3C:FD:AD

[root@Server network-scripts]# lspci | grep -i ethernet
06:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
06:00.1 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
06:00.2 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
06:00.3 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
20:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
20:00.1 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
20:00.2 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
20:00.3 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)

[root@Server network-scripts]# for i in {0..7}
> do
> ethtool -i eth$i | grep -i bus-info
> done
bus-info: 0000:20:00.0
bus-info: 0000:20:00.1
bus-info: 0000:20:00.2
bus-info: 0000:20:00.3
bus-info: 0000:06:00.0
bus-info: 0000:06:00.1
bus-info: 0000:06:00.2
bus-info: 0000:06:00.3

[root@Server network-scripts]# ip link show up | grep eth*
6: eth4: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether 98:be:94:3c:fd:aa brd ff:ff:ff:ff:ff:ff
    link/ether 9a:be:94:3c:fd:a9 brd ff:ff:ff:ff:ff:ff
[root@Server network-scripts]#