Re: CUPS - set up printer by name instead of IP address

From	The Natural Philosopher <tnp@invalid.invalid>
Newsgroups	comp.os.linux.misc
Subject	Re: CUPS - set up printer by name instead of IP address
Date	2020-04-15 11:58 +0100
Organization	A little, after lunch
Message-ID	<r76pbr$7n0$1@dont-email.me> (permalink)
References	(1 earlier) <poogmg-70k.ln1@Telcontar.valinor> <r74e65$7l2$2@dont-email.me> <6rsgmg-d3n.ln1@Telcontar.valinor> <r74stg$kof$1@dont-email.me> <v65jmg-1fn.ln1@Telcontar.valinor>

Show all headers | View raw

On 15/04/2020 11:45, Carlos E.R. wrote:
> On 14/04/2020 19.46, The Natural Philosopher wrote:
>> On 14/04/2020 15:10, Carlos E.R. wrote:
>>> On 14/04/2020 15.35, The Natural Philosopher wrote:
>>>> On 14/04/2020 14:00, Carlos E.R. wrote:
>>>>> On 14/04/2020 07.10, Charlie Gibbs wrote:
>>>>>> I find CUPS to be nice when it works, but frustrating when it
>>>>>> doesn't - which happens often.  I've tracked it down to the
>>>>>> fact that CUPS accesses my printer by its IP address - which
>>>>>> changes from time to time when the printer is powered off or
>>>>>> when its DHCP lease expires.  In the CUPS web-based interface
>>>>>> (http://localhost:631), the "Printers" maintenance screen
>>>>>> currently shows:
>>>>>>
>>>>>> Connection: lpd//192.168.0.41:515/PASSTHRU
>>>>>>
>>>>>> My printer, on the other hand, is showing an IP address of
>>>>>> 192.168.0.45, so any attempts to print will fail.  If I delete
>>>>>> and re-add the printer, CUPS will find the new IP address and
>>>>>> all will be well - until the printer's IP address changes again.
>>>>>>
>>>>>> Is there a way to get CUPS to access the printer by its name
>>>>>> (EPSONxxxxxx) rather than its IP address?
>>>>>
>>>>> Can you ping that name? My guess is "no". Then, of course CUPS 
>>>>> can't find the printer by name.
>>>>>
>>>>> The usual solution is simply to assign a fixed IP to the printer. 
>>>>> There are two basic methods: write the address in the printer own 
>>>>> configuration panel or web page, or fixate the address in the 
>>>>> router via DHCP.
>>>>>
>>>>> Another would be some kind of DNS setup that updates automatically.
>>>>>
>>>> Bonjour...
>>>
>>> Doesn't seem to work.
>>>
>>> Isengard:~ # lpinfo --include-schemes dnssd -v
>>> Isengard:~ #
>>>
>>>
>> ah. that foxes me. I THOUGHT that was how MAC OSX did it. I really did.
>> And Mac OSX uses CUPS.
>>
>> Ah. OS/X uses Air Print so the printer may be running THAT but not 
>> bonjour.
>>
>>
>>
>>> I was rather thinking of an actual DNS setup that gets the name 
>>> "somehow" and sets it up.
>>>
>> I think that is sort of how the bonjour/ air print works.,
>>
>> I enabled both on my printer by using the printers web interface to 
>> enable it and...
>>
>> lpinfo --include-schemes dnssd -v
>> network 
>> dnssd://HP%20Color%20LaserJet%20Pro%20M252n%20(F63AC8)._pdl-datastream._tcp.local/ 
>>
>>
>> It showed a blank before.
>>
>> This web page may be useful:
>>
>> https://wiki.debian.org/CUPSDriverlessPrinting
>>
>>
>>
>>
>>
>>> Routers are in the best position to do this, but mine doesn't.
>>>
>>
>> No, routers are not really. The bonjour was designed for this really. 
>> IF you can turn it on on te printer it SHOULD solve your problem the 
>> 'official' and rather modern way and has the advantage (???) that any 
>> mobile device  that connects to your network should also find the 
>> printer and be able to use it.
> 
> I'm not talking of bonjour at all.
> 
But I am.

> Just the router giving an IP to machines via DHCP, and finding their 
> names (probably their windows names). I see my router finding "android" 
> hosts. It can use rules to assign names on the DNS server that runs on 
> the router.
> 

Bonjour is the printer giving its IP address to the client with no 
involvement of the router at all.

> It is easy to assign an IP to a printer on the DHCP server at the 
> router. It should be trivial to also assign a name in the same config page.
> 
No
It is even easier to enable bonjour on the printer at which point the 
printer should just appear in CUPS., At least that how it works here now 
that I have enabled it.

 > It should be trivial to also assign a name in the same config page.
No. Routers do not assign names

> That's all.
> 
> 


-- 
“Some people like to travel by train because it combines the slowness of 
a car with the cramped public exposure of  an airplane.”

Dennis Miller

Back to comp.os.linux.misc | Previous | Next — Previous in thread | Next in thread | Find similar

Thread

CUPS - set up printer by name instead of IP address Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-04-14 05:10 +0000
  Re: CUPS - set up printer by name instead of IP address Bob Tennent <BobT@tennent.ca> - 2020-04-14 11:18 +0000
    Re: CUPS - set up printer by name instead of IP address The Natural Philosopher <tnp@invalid.invalid> - 2020-04-14 13:04 +0100
  Re: CUPS - set up printer by name instead of IP address The Natural Philosopher <tnp@invalid.invalid> - 2020-04-14 13:00 +0100
  Re: CUPS - set up printer by name instead of IP address Andreas Kohlbach <ank@spamfence.net> - 2020-04-14 08:36 -0400
    Re: CUPS - set up printer by name instead of IP address The Natural Philosopher <tnp@invalid.invalid> - 2020-04-14 14:03 +0100
      Re: CUPS - set up printer by name instead of IP address Andreas Kohlbach <ank@spamfence.net> - 2020-04-14 13:30 -0400
  Re: CUPS - set up printer by name instead of IP address "Carlos E.R." <robin_listas@es.invalid> - 2020-04-14 15:00 +0200
    Re: CUPS - set up printer by name instead of IP address The Natural Philosopher <tnp@invalid.invalid> - 2020-04-14 14:35 +0100
      Re: CUPS - set up printer by name instead of IP address "Carlos E.R." <robin_listas@es.invalid> - 2020-04-14 16:10 +0200
        Re: CUPS - set up printer by name instead of IP address The Natural Philosopher <tnp@invalid.invalid> - 2020-04-14 18:46 +0100
          Re: CUPS - set up printer by name instead of IP address "Carlos E.R." <robin_listas@es.invalid> - 2020-04-15 12:45 +0200
            Re: CUPS - set up printer by name instead of IP address The Natural Philosopher <tnp@invalid.invalid> - 2020-04-15 11:58 +0100
              Re: CUPS - set up printer by name instead of IP address "Carlos E.R." <robin_listas@es.invalid> - 2020-04-16 12:53 +0200
                Re: CUPS - set up printer by name instead of IP address The Natural Philosopher <tnp@invalid.invalid> - 2020-04-16 13:03 +0100
                Re: CUPS - set up printer by name instead of IP address "Carlos E.R." <robin_listas@es.invalid> - 2020-04-16 22:50 +0200
                Re: CUPS - set up printer by name instead of IP address "Anonymous Remailer (austria)" <mixmaster@remailer.privacy.at> - 2020-04-17 01:45 +0200
                Re: CUPS - set up printer by name instead of IP address "Carlos E.R." <robin_listas@es.invalid> - 2020-04-17 04:19 +0200
            Re: CUPS - set up printer by name instead of IP address Rich <rich@example.invalid> - 2020-04-15 14:35 +0000
              Re: CUPS - set up printer by name instead of IP address Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-04-15 17:14 +0000
                Re: CUPS - set up printer by name instead of IP address Bit Twister <BitTwister@mouse-potato.com> - 2020-04-15 12:31 -0500
              Re: CUPS - set up printer by name instead of IP address "Carlos E.R." <robin_listas@es.invalid> - 2020-04-16 12:54 +0200
    Re: CUPS - set up printer by name instead of IP address "Rinaldi J. Montessi" <rinaldi@notaserver.com> - 2020-04-14 10:21 -0500
    Re: CUPS - set up printer by name instead of IP address Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-04-14 16:03 +0000
      Re: CUPS - set up printer by name instead of IP address The Natural Philosopher <tnp@invalid.invalid> - 2020-04-14 18:47 +0100
      Re: CUPS - set up printer by name instead of IP address "Carlos E.R." <robin_listas@es.invalid> - 2020-04-16 13:00 +0200

csiph-web