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

[David Seira]

Yes, but the problem is that with ifconfig the changes are not persistent.

2014/1/22 Zach Malone <zmalone at omniti.com>:
> 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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