Cell Relay Archive

[Andy Leigh <Andy@legion.demon.co.uk>]

yes, I've got a print-out of the document, which I've found extremely useful and 
thorough. Do you have any opinions about how things are going with this 
standard? What about the choice of IDC v DCC? Given the UK-centric nature of the 
academic entwork. I suppose DCC is your best option...


Andy


In your message dated Wednesday 18, December 1996 you wrote :
> 
> UKERNA have done an interim ATM addressing scheme see
> 
>           URL: http://www.ed.ac.uk/~george/ukac-index.html
> 
> 
> cheers
> Jim Jackson
> 
> On Wed, 18 Dec 1996, Andy Leigh wrote:
> 
> > Dear all,
> > 
> > the time has come...
> > 
> > We really need to start tying down an ATM Address structure for our
> > organisation (c 25k employees, UK-based, no private links leaving the
> > country) and I'm looking into what's needed. I've searched the web and
> > found a few references, and it seems that everyone feels as I do,
> > namely that something has to be done, but breaking too soon could
> > cause problems later on. However, we have to do something fast,
> > considering the amount of ATM popping up all over.
> > 
> > My thinking is this: It's a private network, so don't use E.164. We
> > might need multiple Telcos to supply our WAN needs, so don't use NSAP
> > E.164. This just leaves DCC and ICD. Given that we're very much
> > UK-based, we don't really need an International identifier (although,
> > we _are_ well known internationally). Which leaves me with the DCC
> > NSAP-type address. 
> > 
> > My question is this: What is everyone else doing? And, what is the
> > most popular system today? (I think I was told that the ICD was the
> > most popular)
> > 
> > Also, the High Order DSP can be broken up into subnets, to allow
> > hierarchical information hiding and aggregation (just like IP). I've
> > not seen any references on how to go about this. Are there rules, like
> > IP (RFC1121). Specifically, how is the mask confifigured? Do the bits
> > need to be contiguous? Are any numbers illegal (like IP, where
> > network, subnet and host addresses must not be all 1s or all 0s)?
> > 
> > Any advice or experience you have would be gratefully received! If you
> > haven't thought about this before, now's youe time to dig into the
> > debate.
> > 
> > 
> > Andy
> > 
> > 
> > 
> 

-- 
Andy Leigh    andy@legion.demon.co.uk