[tech] Switches and hubs...

[Simon Fryer]

Bingle

> A while ago David Manchester tapped:

> > On Thu, Sep 02, 1999 at 04:19:55PM +0800, Simon Fryer wrote:
> 
> > >    - replacement of the network card in Manta
> > >   - reracking merman and debugging the serial problems with the new CPU card.
> > Yes, these are long overdue.
> > Nick.
> 
> What succks about Manta's NIC..?

Intermittent traffic action under heavy network activity... 

> I'm sure Prep can donate one.

We have a couple sitting on the shelf in the machine room. It is more a metter 
of me being there, in the right mood and not being asked to do xxx  in ordre to 
intall/replace them. 

> When we want to play Merman = 4/330, I'll be happy to assist.

This could be a bit of a problem. From what I have seen with it there was
no volts action through serial ports A and B. Port A being needed for a 
console. Surprise surprise ports A and B share a common line driver IC. SO, I 
nedded the whole lot in a rack so I could work on it and make sure that the
driver IC is actually being fed +/- 12V (A trivial check) before obtaining 
a replacement chip. There are a couple of other bits and pieces that need
to be looked at as well with this box like the recomended board layout from
sun being totally different to every other board layout for a VME rackmount
sun that I have ever seen (ok, I havn't seen that many). I would appreciate
the assistance though! 

See Ya
Simon

-- 
------------------------------------------------------------------------
"Well, an engineer is not concerned with the truth; that is left to 
philosophers and theologians: the prime concern of an engineer is 
the utility of the final product."  
Lectures on the Electrical Properties of Materials, L.Solymar, D.Walsh