How to change MTU?

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dog-man
Posts: 34
Joined: Tue Jun 05, 2012 5:20 pm

How to change MTU?

Post by dog-man »

How do I change the MTU on the 7800N with sky fibre firmware please?
dog-man
Posts: 34
Joined: Tue Jun 05, 2012 5:20 pm

Re: How to change MTU?

Post by dog-man »

Nobody know?

I need to change it to 1472 instead of the default 1500.



dog-man
Tomken
Posts: 467
Joined: Tue Jul 26, 2011 10:31 am
Location: Co Durham

Re: How to change MTU?

Post 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.
dog-man
Posts: 34
Joined: Tue Jun 05, 2012 5:20 pm

Re: How to change MTU?

Post by dog-man »

Thanks. I will try that.
dog-man
Posts: 34
Joined: Tue Jun 05, 2012 5:20 pm

Re: How to change MTU?

Post 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...
billion_fan
Posts: 5398
Joined: Tue Jul 19, 2011 4:30 pm

Re: How to change MTU?

Post 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
You do not have the required permissions to view the files attached to this post.
dog-man
Posts: 34
Joined: Tue Jun 05, 2012 5:20 pm

Re: How to change MTU?

Post 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???
billion_fan
Posts: 5398
Joined: Tue Jul 19, 2011 4:30 pm

Re: How to change MTU?

Post 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)
You do not have the required permissions to view the files attached to this post.
dog-man
Posts: 34
Joined: Tue Jun 05, 2012 5:20 pm

Re: How to change MTU?

Post 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.
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