FreeBSD 9.1 ix driver vlan problem

[Jack Vogel]

Thanks for the investigation, I guess what I'm wondering the most right now
is if the patch from
Oleg is a good change in general, so any others that can test and give me
results would be appreciated.

Thanks,

Jack

On Wed, Sep 25, 2013 at 11:14 AM, Rumen Telbizov <telbizov at gmail.com> wrote:

> Hi Jack,
>
> Thanks for the suggestions and looking into this.
> Here are a few additional bits of information that you requested:
>
> 1. We did disable spanning tree on the switch port and the result of that
> is that basically now creating/destroying a vlan on the ix interface makes
> it freeze for about 3 seconds from previously 6.
> 2. I brought manually the physical interface down (ifconfig ix1 down) and
> then up and measured the time it took for the interface on the switch to
> show as up - and that was again about 3 seconds. So basically it seems to
> me like that's how long it normally takes for a link to be negotiated.
> 3. We tweaked a setting on the switch which instructs the port to be down
> for 5 seconds before it's considered down. Then repeated the test again and
> the result was that now the "freeze" period got reduced to 1.5 seconds and
> no ping packets were lost but one of the packets returned with 1500 ms
> delay. My guess on this one is that since the switch ignored the flapping
> of the interface, bringing it back up was much faster. So it does mask the
> problem somewhat but it is still there - the interface seems to go down.
>
> Next steps:
> 1. I will reinstall this machine with the latest 9.2 and repeat the tests
> see what happens.
> 2. If the previous one fails - I'll try the patch that Oleg sent. Thanks a
> lot for providing that patch.
>
> I'll update this list with more findings.
>
> Thank you,
> Rumen Telbizov
>
>
>
> On Wed, Sep 25, 2013 at 10:01 AM, Jack Vogel <jfvogel at gmail.com> wrote:
>
>> Rumen,
>>
>> I'd like to know if you can check the spanning tree setting as Daniel
>> mentioned and if that solves it,
>> I do know that that can cause considerable delay in link transitions.
>> Also, can you see if you see
>> different behavior by going to the latest 9.2 bits?
>>
>> Oleg thanks for the patch, I will check it out and have my validation
>> engineer do some tests and
>> we'll get to the bottom of this.
>>
>> Jack
>>
>>
>>
>> On Wed, Sep 25, 2013 at 9:57 AM, Rumen Telbizov <telbizov at gmail.com>wrote:
>>
>>> Thanks for the patch Oleg.
>>> I'll give it a try but I would also like to hear back from Jack.
>>>
>>> Oleg, can you confirm that you're experiencing the exact same
>>> problem/behavior? What kind of switch is connected on the other end?
>>>
>>> Thanks,
>>> Rumen Telbizov
>>>
>>>
>>> On Wed, Sep 25, 2013 at 9:40 AM, Oleg Bulyzhin <oleg at freebsd.org> wrote:
>>>
>>> >
>>> > I'm running my ixgbe servers with attached patch.
>>> > It does solve this problem for me.
>>> >
>>> > --
>>> > Oleg.
>>> >
>>> > ================================================================
>>> > === Oleg Bulyzhin -- OBUL-RIPN -- OBUL-RIPE -- oleg at rinet.ru ===
>>> > ================================================================
>>> >
>>> >
>>>
>>>
>>> --
>>> Rumen Telbizov
>>>
>>> Unix Systems Administrator <http://telbizov.com>
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>>>
>>
>>
>
>
> --
> Rumen Telbizov
> Unix Systems Administrator <http://telbizov.com>
>