On Sep 28, 2006, at 9:41 AM, Darrell Schiebel wrote:
We've been happily using mDNS for printer service discovery with
our OSX server and recently we got all of our ducks in line for
mDNSResponder to publish all of our printing info to our regular
DNS server. We were excited to see all of the ipp (_ipp._tcp.)
show up in Bonjour Browser for our DNS domain, but still they do
not show up in the OSX printing dialog. If we export the printers
as an lpr queue (in addition to ipp) then they show up under
"Bonjour Printers" instead of "Shared Printers", but we lose all
of the options, e.g. duplex, tray selection, etc. We noted that
the same thing happened with the (dummy) printers exported by dns-
sd.org.
Does anyone have any idea why the "Shared Printers" (_ipp._tcp.)
exported via dns-sd aren't recognized and used by the printing
subsystem of OSX? Any suggestion as to what we might be doing wrong?
Bonjour printers will only show up under "Bonjour Printers". They
will never show up under Shared Printers. Shared Printers use a
different protocol called CUPS broadcast (which is going away in
Leopard).
Thanks very much for the reply, Marc. So if you point your bonjour
browser to cv.nrao.edu, you should see all of our printers specified
with _ipp._tcp.cv.nrao.edu. These have all of the printing options,
and they are what we get when we tell OSX server to share these
queues with "ipp". However, these queues do not show up in the
printer lists on hosts which are members of the cv.nrao.edu domain,
even after this domain is added to the browse list via the bonjour
preference pane.
If we instead tell OSX server to share them with LPR and to "show
name in bonjour", they do show up, but we lose all of the options for
each printer. So I guess my question to you is how do I get all of
this _ipp printer information available from our DNS server to show
up as printer options for users?
Unfortunately, Mac OS X Tiger actually filters out Bonjour printers
being advertised by Mac OS X Printer Sharing to avoid displaying
duplicates. Maybe this is what you're seeing.
Could be... but on cv.nrao.edu printers are only exported via
_ipp._tcp... Does it discard them out of hand without even checking
to see if they are duplicates?
If you advertise the printer yourself instead of relying on Printer
Sharing to do it, you can work around this. So on the machine
sharing the printer, run the following command in Terminal...
This doesn't show up in either the "shared printers" or the "bonjour
printers" list.
Thanks for any advice,
Darrell
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