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How to change MTU?
Posted: Sat Sep 21, 2013 6:18 pm
by dog-man
How do I change the MTU on the 7800N with sky fibre firmware please?
Re: How to change MTU?
Posted: Tue Oct 01, 2013 8:48 pm
by dog-man
Nobody know?
I need to change it to 1472 instead of the default 1500.
dog-man
Re: How to change MTU?
Posted: Wed Oct 02, 2013 3:20 pm
by Tomken
While I don't know if Sky Fibre changes the GUI of the 7800N as to normal - not being a Sky user, you could try changing it in the computer (IPv4) to see if that helps.
Open a cmd prompt as an administrator then enter the following cmd -
netsh interface ipv4 show interfaces (press Enter)
This will show the sub interfaces for the Pseudo Loop, Wireless and LAN.
Using the Index number in the left column - say it's 12 for the Wireless and 15 for LAN, enter the following cmd for that interface to your required MTU.
netsh interface ipv4 set subinterface 12 mtu=1472 store=persistent
Then repeat the cmd for the LAN with its Index number - ideally it should be set in the router as well but in the absence of any definitive help on the forum then you could open a ticket at
http://www.billion.uk.com/esupport if just setting it in the computer doesn't resolve.
Repeat the ...
show interfaces cmd to confirm that the changes have been made.
Re: How to change MTU?
Posted: Wed Oct 02, 2013 4:12 pm
by dog-man
Thanks. I will try that.
Re: How to change MTU?
Posted: Mon Jan 13, 2014 2:54 pm
by dog-man
Could someone from Billion support please confirm that the mtu is not adjustable or can even be viewed within the sky fibre (UK) firmware in my 7800N router?
I have adjusted the mtu on my PC.
dog-man...
Re: How to change MTU?
Posted: Tue Jan 14, 2014 11:14 am
by billion_fan
dog-man wrote:Could someone from Billion support please confirm that the mtu is not adjustable or can even be viewed within the sky fibre (UK) firmware in my 7800N router?
I have adjusted the mtu on my PC.
dog-man...
See attached screen shot, where you can make this change
Re: How to change MTU?
Posted: Tue Jan 14, 2014 11:46 am
by dog-man
I do NOT have the mtu option that is in between Obtain DNS & Vlan Mux in my firmware.
My firmware is v1.06g.dc1.
I assume the image posted is from another firmware???
Re: How to change MTU?
Posted: Tue Jan 14, 2014 11:59 am
by billion_fan
dog-man wrote:I do NOT have the mtu option that is in between Obtain DNS & Vlan Mux in my firmware.
My firmware is v1.06g.dc1.
I assume the image posted is from another firmware???
Posted off 1.06h.dt2 which I have attached (this firmware is for the 7800N)
Re: How to change MTU?
Posted: Tue Jan 14, 2014 12:07 pm
by dog-man
Thanks. I did not know there was a newer firmware for the 7800N and sky fibre.
I will try later when I have more time.