[ofa-general] ERR 0108: Unknown remote side

[Yevgeny Kliteynik]

Sasha Copyist wrote:
> Hi Bernd,
>
> [adding Yevgeny..]
>
> On 11:35 Tue 08 Apr     , Bernd Schubert wrote:
>   
>> On Tuesday 08 April 2008 03:44:06 Sasha Copyist wrote:
>>     
>>> Hi Bernd,
>>>
>>> On 11:47 Fri 04 Apr     , Bernd Schubert wrote:
>>>       
>>>> opensm-3.2.1 logs some error messages like this:
>>>>
>>>> Apr 04 00:00:08 325114 [4580A960] 0x01 ->
>>>> __osm_state_mgr_light_sweep_start: ERR 0108: Unknown remote side for node
>>>> 0
>>>> x000b8cffff002ba2(SW_pfs1_leaf4) port 13. Adding to light sweep sampling
>>>> list Apr 04 00:00:08 325126 [4580A960] 0x01 -> Directed Path Dump of 3
>>>> hop path: Path = 0,1,14,13
>>>>
>>>>
>>>> From ibnetdiscover output I see port13 of this switch is a
>>>> switch-interconnect (sorry, I don't know what the correct name/identifier
>>>> for switches within switches):
>>>>
>>>> [13]    "S-000b8cffff002bfa"[13]                # "SW_pfs1_inter7" lid
>>>> 263 4xSDR
>>>>         
>>> It is possible that port was DOWN during first subnet discovery. Finally
>>> everything should be initialized after those messages. Isn't it the case
>>> here?
>>>       
>> I think everything is initialized, but I don't think the port was down during 
>> first subnet discovery, since the port is on a spine board (I called 
>> it 'inter') to another switch system. We also never added any leafes to the 
>> switches.
>>     
>
> It is interesting phenomena then.
>
> Yevgeny, do you aware about such issue with Flextrinocs switches?
>
>   

I've seen it before. It means that during discovery some switch has
answered NodeInfo query, but then when OpenSM started to query for
PortInfo for each port of this switch, switch didn't answer for some
(or all) ports.

I think that this might happen if a switch has just been "plugged in",
and internal switches are doing autonegotiation - they are bringing
ports up and down when determining whether a link is SDR or DDR.

In any case, this "phenomena" should disappear after a couple of
dozens of seconds, when all the autonegotiation phase would be over.

Bernd, am I close?


-- Yevgeny

> Sasha
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