AP Mode MTU

[YTN]

I have my Almond+ running in AP mode and I need to change the MTU from 1500 to 1472 (related to Uverse and IPv6 issues).

However, when I go into the advanced menu, the option to change the MTU for the LAN side seems to be disabled (you can't enter anything / edit).

How can I enable this / change the MTU?

Thanks.

[Rahaman]

I have my Almond+ running in AP mode and I need to change the MTU from 1500 to 1472 (related to Uverse and IPv6 issues).

However, when I go into the advanced menu, the option to change the MTU for the LAN side seems to be disabled (you can't enter anything / edit).

How can I enable this / change the MTU?

Well you can do it from almond + console, use following commands to get it done.
-->  vi /etc/config/network you will see something like this.....

config 'interface' 'loopback'
        option 'ifname' 'lo'
        option 'proto' 'static'
        option 'ipaddr' '127.0.0.1'
        option 'netmask' '255.0.0.0'

config 'interface' 'lan'
        option 'ifname' 'eth0 eth1'
        option 'type' 'bridge'
        option 'ipaddr' '10.10.10.254'
        option 'netmask' '255.255.255.0'
        option 'proto' 'dhcp'

Then add one more line in config 'interface' 'lan' just after option 'proto' 'dhcp'
the line is option 'mtu' '1496'
Next save the script and restart the network using following commands..
  etc/init.d/network restart
Thats it... now you can see, it got changed. Use ifconfig command to check.

Note:-This setting won't be available after reset your device. You have to configure it again.


     

[YTN]

Is changing the MTU going to be supported in a future revision of the firmware? Having to reconfigure after each reboot isn't ideal.

[Rahaman]

Having to reconfigure after each reboot isn't ideal.

Note:-This setting won't be available after reset your device. You have to configure it again.

I think I mentioned about Factory RESET above not reboot. So don't worry, reboot won't change the settings. 

[Rahaman]

You can also change MTU from OpenWRT Web UI. There is an option called Override MTU in Network > LAN interface > Advance settings , I think you already know that... By default the value will be 1500 in Gray color. But it is editable, It might be some other reason which caused you to unable to edit the value. Better check it again.