Re: transport selector

Ton Verschuren <Ton.Verschuren@surfnet.nl> Fri, 22 October 1993 10:57 UTC

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From: Ton Verschuren <Ton.Verschuren@surfnet.nl>
Message-ID: <"survis.sur.232:22.09.93.09.17.27"@surfnet.nl>
To: " (Jason Cross)" <cross@ae.eds.com>
Cc: ISODE@nic.ddn.mil, osi-ds@cs.ucl.ac.uk, quipu@cs.ucl.ac.uk
In-Reply-To: <9310212035.AA22364@majorca.eds.com>
Subject: Re: transport selector
Organisation: SURFnet bv
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==> From: Jason Cross

> When testing with dish for the OSI stack, I used the following in
> dsaptailor:
> 
>    dsa_address mydsaname      '025c'H/NS+47xxxxxxxxxxxxxxxxxxxxxxxxxxx
> 
> and for TCP I used:
> 
>    dsa_address mydsaname      Internet=192.xx.xx.xx+17003
> 
> The test for the OSI stack was successful, but unsuccessful for TCP
> until I added:
> 
>    dsa_address mydsaname      '025c'H/Internet=192.xx.xx.xx+17003
> 
> I assume in this case, that '025c'H is considered a TSEL.  Bad
> assumption?

No, it's a TSEL!. Remember that the address IS an (OSI) Presentation
Address, only the lower layers are non-OSI, so you need a TSEL. For
more info about the encoding of IP-addresses in presentation
addresses, have a look at RFC1277:

1277  PS   S. Kille, "Encoding Network Addresses to Support Operation Over 
           Non-OSI Lower Layers", 11/27/1991. (Pages=10) (Format=.ps)         

Regards,

Ton Verschuren - Network Development - SURFnet bv