MTU is the maximum transmission unit.It is the size of the largest datagram that can be transmitted through a given network. Any messages larger than the MTU are divided into smaller packets before being sent.In some cases we have to increase MTU value for enabling jumbo frames UBUNTU Command: #ifcfg eth0 mtu 2000 Configuration file: #vi /etc/network/interfaces iface eth0 inet static address 192.168.0.1 network 192.168.0.0 gateway 192.168.0.254 netmask 255.255.255.0 mtu 2000 Restart service #/etc/init.d/networking restart To view MTU value #ifconfig eth0 | grep MTU CENTOS Command: #ifcfg eth0 mtu 1492 Configuration file: #vi /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE="eth0" NM_CONTROLLED="yes" ONBOOT=yes HWADDR=A4:BA:DB:37:F1:04 TYPE=Ethernet BOOTPROTO=static NAME="System eth0" UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03 IPADDR=192.168.1.23 MTU 2000 Restart service # /etc/init.d/netwo...