[OmniOS-discuss] Changing the mtu of a vlan interface

[Zach Malone]

I bet the old ifconfig mtu commands will work, even if dladm won't
modify the interface.

On Wed, Jan 22, 2014 at 11:09 AM, David Seira <dseira at stackscale.com> wrote:
> Hi all,
>
> I'm trying to figure out how change the mtu of a vlan interface once
> it is created.
>
> First I've created the aggr interface with the mtu 1500. Then I've
> created a vlan for this interface with the same mtu.
>
> Next I want to change the mtu of this connection. First I've changed
> the mtu of the aggr:
>
> #dladm set-linkprop -p mtu=9000 aggr0
>
> But the problem comes when I've tried to change the mtu of the vlan
> interface with the same command; I receive the next message:
>
> dladm: warning: cannot set link property 'mtu' on 'aggr0.164':
> operation not supported
>
> I've also tried disable the interface but with the same result.
>
> If I delete and create the vlan interface again (with the aggr0 with
> the mtu 9000) it works.
>
> I don't understand why is not possible to change the mtu of a vlan
> interface once it is created.
>
> Is possible? How can I do that?
>
>
> Regards,
> David
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