IPP> Revised SLP 'printer:' template for comments

IPP> Revised SLP 'printer:' template for comments

Robert Herriot robert.herriot at Eng.Sun.COM
Mon Jan 4 21:44:32 EST 1999


I agree that there is no guarantee that "printer-name" values are unique 
even within a domain, but they should be unique as a practical matter so 
that a user can uniquely identify a printer by its "printer-name" instead of 
the URL, at least in a local context.

There remains the issue of how does anyone determine if two separate SLP 
entries (with different URLs) represent the same output device. I am 
suggesting using a convention that a "printer-name" qualified by a domain 
name and SLP scope uniquely identifies a printer.


Bob Herriot

At 05:02 PM 1/4/99 , Manros, Carl-Uno B wrote:
>Bob,
> 
>I welcome this attempt to get a simpler SLP solution and in practice I think
>we will find few printers that have more than one URI.
>However, your assumption in a) that you could use 'printer-name' to find out
>whether a printer has several URIs does not
>seem correct. There is no guarantee that "printer-name' values are unique,
>even within the same domain (at least not according to IPP).
> 
>Carl-Uno
>
>-----Original Message-----
>From: Robert Herriot [mailto:robert.herriot at Eng.Sun.COM]
>Sent: Monday, January 04, 1999 4:38 PM
>To: Ira McDonald; imcdonal at sdsp.mc.xerox.com; ipp at pwg.org; srvloc at srvloc.org
>Subject: Re: IPP> Revised SLP 'printer:' template for comments
>
>
>At our Tucson meeting, the IPP group agreed with James Kempf that there 
>should be a separate SLP entry for each URI and that the URI associated with
>
>the entry would be the printer's URI.  Ira, I know that you disagreed with 
>this direction.
>
>If we stay with this decision, it implies to me that there is 
>   a)  no need for the 'printer-uri-supported' attribute in the template. It
>can be 
>        determined by finding all URI's containing a 'printer-name' with a
>particular value.
>   b)  'uri-security-supported' contains the security supported for the
>associated URI and
>        not for other URIs associated with a printer.
>   c)  the complexity of two parallel attributes is eliminated.
>
>Bob Herriot
> 
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