For ex, if NETMAP contains 100:1 102:2, it means 100th IOL instance port 1(eth1/0) is connected to 102nd IOL instance port 2 (eth2/0). Network interface port speed can only be verified in Linux using the ‘ethtool’ command. From CLI, NETMAP file can be modified to create a topology as per user’s test requirement. When you run the IP command without any argument, it gives you plenty of information about NIC, but use the following customized IP command to check only the network interfaces available on the system: # ip a |awk '/state UP/'ĭc:a6:32:b2:8b:11 4) Check speed of a network interface Valid_lft forever preferred_lft forever 1) Checking available network interfaces Inet6 fe80::42:eaff:fe94:f15c/64 scope linkĥ: docker0: mtu 1500 qdisc noqueue state UP group default Link/ether 8e:a8:84:5c:60:d9 brd ff:ff:ff:ff:ff:ff permaddr dc:a6:32:ea:8b:03Ĥ: hassio: mtu 1500 qdisc noqueue state UP group default Inet6 fe80::efe8:791c:c224:8453/64 scope link noprefixrouteģ: wlan0: mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000 Link/ether dc:ae:32:ea:8b:02 brd ff:ff:ff:ff:ff:ff # ip aġ: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 Ip command is similar to ifconfig, which is used for assigning Static IP Address, Route & Default Gateway, etc.
# sudo ethtool eth0 Checking Network Interface details with ethtool ip command
BASH COMMAND NETMAP DRIVER
The ethtool command is used to query or control network driver and hardware settings. Few ways to check Network Interface details in Linux such as interface name, associated IP address, MAC address and interface speed etc.
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