Hi Josh,

to be honest the 4xx are giving us problems. We have a lot of boards
with "strange behaviors", I have a desk full of "suspected of...,
probably does not do <this or that>".

I cannot tell you if the 5xx (e.g. 532) series were worse. We still have
some 532/532A installed with 2.9.x and they work great, I admit the same
is not for the 333/4xx series.
Maybe it's because the number of nodes in our network has grown
considerably and they are "new" boards.

Just to tell you the one that we had today:

- the 333/433 board looks burned with a +24V power supply, but it was
working nicely with +18VDC. Same board family and same power supply
family working in other sites
- the 333/433 has ethernet problems with +24 but it works nicely with
+18VDC. Don't ask me why...

However, it surprised me to read about this:

http://forum.routerboard.com/viewtopic.php?f=3&t=3868

Now, do you think that I will go up on the tower to open the box and see
what is the capacitor on the board?

Another thing is that I still don't understand why the power supply is
not 48VDC as most of the telco world. It would have simplified many
things but the most irritating is that we have to keep different power
supplies accordingly to different board series. Fortunately lately this
has more or less changed.

I will not talk about the software issues, it's too easy to talk about
the bugs. Every release has "new undiscovered bugs" of the previous one.

Honestly I would have preferred less features and more stability, but
it's their choice.

Just my 2EuroCents.

P.S. I did not yet send the boards back to mikrotik, I don't have time
for that, maybe in the near future.

>  Moreover, I suspect the overall quality of Mikrotik hardware is not very
> good and it's getting even worse.
> 
>>> To begin with they're not the best by they are far from "not very good" in
> my opinion.  As far as progression, though, they have majorly improved.  The
> RB4xx series is BY FAR superior to the RB1xx and RB5xx boards.  I think the
> 532s were absolute junk, while the 1xx were decent.  The 4xx has been
> flawless in my area.  I have had no DOAs and only one hit by lightning.  No
> random failures!
> 
> Josh Luthman
> Office: 937-552-2340
> Direct: 937-552-2343
> 1100 Wayne St
> Suite 1337
> Troy, OH 45373
> 
> Those who don't understand UNIX are condemned to reinvent it, poorly.
> --- Henry Spencer
> 
> 
> On Wed, Jan 21, 2009 at 12:00 PM, Paolo Di Francesco <
> [email protected]> wrote:
> 
>> Hi Forbes,
>>
>> good news and bad news. Let me start with the good news.
>>
>> You are not alone!
>>
>> The bad news is the same of the good news, lately, we are having a lot
>> of problems on the ethernet. It looks like the ethernet port has a lower
>> speed (like 200Kbps) or that you cannot even log in it. Does it sound
>> familiar to you?
>>
>> On some site, it can be some EM field close to you. That's why when you
>> try it in your lab everything works magically. You are out of that EM
>> field, and the interference is gone. Even using shielded cable does not
>> help, because it could attenuate the effect not fix at 100%. Moreover it
>> depends if the shield is grounded to the metallic shell of the box, etc.
>>
>> Moreover, I suspect the overall quality of Mikrotik hardware is not very
>> good and it's getting even worse.
>>
>> Suggestions:
>>
>> 1) try shielded cable
>> 2) try some ferrule on the shielded cable
>> 3) test electrical continuity of the circuit from the cable plug on one
>> side to the box (other side)
>> 4) change power supply
>> 5) if you are using an inject/splitter, change it
>>
>> Let us know!
>>
>> Thank you.
>>
>>
>>> We have a tower with a single radio operating on it.  We were using a
>>> Microtik 133 board with a single Prizim chipset in it.  One day it
>>> stopped responding to requests through the network using Winbox.  No
>>> customers were down so we assumed it was running bandwidth (too much
>>> snow to travel up there).  One night about 7 PM we started getting tower
>>> down calls, of course we hadn't been able to ping or get into it for
>>> weeks so we had no idea.
>>>
>>> Took a back-up 433AH board up and used the same radio card, worked like
>>> a charm for both our access and customer throughput.  We didn't want to
>>> waste a three port/LAN board so ordered a 433a single port board.  Once
>>> it arrived we logged into it by MAC in the office with no problem,
>>> programmed it and sent it up to the tower.  Once on the tower customers
>>> associated just fine but once again we couldn't access the management
>>> side.  We saw the MAC and the identity for it but we couldn't ping that
>>> IP (yes, the 433AH radio was unplugged) and trying to load by MAC would
>>> start the RouterOS download but at various places it would crash.
>>>
>>> Moved the 433A down to the hut and a laptop easily logged into it, even
>>> when plugged into the switch, but we still couldn't log into it from
>>> remote, although the laptop on scene was going through the same switch
>>> and by MAC just like we were trying, sigh.  OK we put the 433AH back in
>>> service and again everything worked great.  I'm stumped, we isolated the
>>> switch, Cat 5, and IP Address but those two single cards won't allow us
>>> to log in over using Winbox either by IP or by MAC while it allows it
>>> locally.   *banging head against the wall.  Any ideas?
>>>
>>> Forbes
>>>
>>>
>>>
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>>
>> --
>>
>>
>> Ing. Paolo Di Francesco
>>
>> Teleinform S.p.A.
>> Sede Legale: Via Francesco Paolo Di Blasi 1, 90144 Palermo
>> Unita' Operativa: Via Regione Siciliana 49, 90046 Monreale
>> Tel: +39-091-6408576, +39-091-6404501
>> Fax: +39-091-6406200
>>
>> http://www.wikitel.it
>> http://www.teleinform.com
>>
>>
>>
>>
>>
>>
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-- 


Ing. Paolo Di Francesco

Teleinform S.p.A.
Sede Legale: Via Francesco Paolo Di Blasi 1, 90144 Palermo
Unita' Operativa: Via Regione Siciliana 49, 90046 Monreale
Tel: +39-091-6408576, +39-091-6404501
Fax: +39-091-6406200

http://www.wikitel.it
http://www.teleinform.com





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