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I am using RHEL 7 and trying to setup permanent MTU size to 8500. Not able to find a way to set it up permanently. The server does not have dhcp.conf file in it.

I am using below command for temporary solution. But the MTU size gets reset after server reboot. If anyone has luck achieving a permanent solution please suggest.

ifconfig eth0 mtu 8500 up
error2007s
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1 Answers1

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You can either add MTU=8500 to the config file in /etc/sysconfig/network-scripts directory (as per this page on the RHEL site).

Or, I expect there's a way to do it with nmcli - nmcli con show ... will list all the options - just look through that for MTU and then use nmcli con mod to update it.

shearn89
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