Re: Jumbo frame Debian Wheezy.

[Muhammad Yousuf Khan]

Thanks for the reply yes you are correct. i assume and find out the same. i
could to change the MTU of the local LAN. then i added 4x1Gb intel  LAN on
the same system and it was working as expected. that shows limit was with
the Hardware.

Thanks,
Yousuf

On Mon, Jan 5, 2015 at 4:14 PM, Alexis  wrote:

>
> Muhammad Yousuf Khan writes:
>
> > i am trying to enable jumbo frame on Debian wheezy however nothing
> > works.
> >
> > i ran a command "ifconfig eth0 mtu 9000"
> >
> > and receive "invalid argument"
> >
> > then i edit /etc/network/interfaces and added "mtu 9000"
> > when i ifdown and ifup eth0
> > it shows the same error "invalid argument"
> >
> > Please help.
>
> It might be that your Ethernet adaptor doesn't support an MTU of
> 9000. For example, the maximum MTU of the adaptor in my laptop is 6122;
> attempts to set the MTU to a larger value than that produces the
> "SIOCSIFMTU: Invalid argument" error.
>
>
> Alexis.
>
>
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>

Re: Jumbo frame Debian Wheezy.

[Alexis]

Muhammad Yousuf Khan writes:

> i am trying to enable jumbo frame on Debian wheezy however nothing
> works.
>
> i ran a command "ifconfig eth0 mtu 9000"
>
> and receive "invalid argument"
>
> then i edit /etc/network/interfaces and added "mtu 9000"
> when i ifdown and ifup eth0
> it shows the same error "invalid argument"
>
> Please help.

It might be that your Ethernet adaptor doesn't support an MTU of
9000. For example, the maximum MTU of the adaptor in my laptop is 6122;
attempts to set the MTU to a larger value than that produces the
"SIOCSIFMTU: Invalid argument" error.


Alexis.


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Re: Jumbo frame Debian Wheezy.

[Muhammad Yousuf Khan]

Another finding is that i can change the mtu less then 1500  my system is
dell precision 490. i have other system on squeeze with no issue at all.
but they are on proxmox.

i have tested that i can set any value less then or equals to 1500 mtu but
when i even try 1501 it says
SIOCSIFMTU: Invalid argument

i have same system working on proxmox. deployed on debian squeeze and i can
go up to 9000 with no problem.
this  problem is  in non proxmox  system having debian wheezy with libvirt.

Please guide.

Thanks,
Yousuf

On Wed, Dec 31, 2014 at 10:43 AM, Muhammad Yousuf Khan 
wrote:

> i am trying to enable jumbo frame on Debian wheezy however nothing works.
>
> i ran a command "ifconfig eth0 mtu 9000"
>
> and receive "invalid argument"
>
> then i edit /etc/network/interfaces and added "mtu 9000"
> when i ifdown and ifup eth0
> it shows the same error "invalid argument"
>
> Please help.
>
> Thanks,
> Yousuf
>

Jumbo frame Debian Wheezy.

[Muhammad Yousuf Khan]

i am trying to enable jumbo frame on Debian wheezy however nothing works.

i ran a command "ifconfig eth0 mtu 9000"

and receive "invalid argument"

then i edit /etc/network/interfaces and added "mtu 9000"
when i ifdown and ifup eth0
it shows the same error "invalid argument"

Please help.

Thanks,
Yousuf