Can print over ethernet but not airport.

K

kmokrzycki

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We are having QMS network printer, i can use this printer when I am connected over Ethernet but when i switch to wireless i can still ping the printer but cannot print, printing reports an error. Any Ideas?
I am having new MacBookPro 15" 2,33 GHz.
 
Is it shared through AppleTalk? If so, you have to make sure that AppleTalk's activated for Airport. Usually, it's turned off.
 
This is a network printer with its own NIC. And it is not shared over AppleTalk but TCP direct print on port 9100.
 
Everything is in the same network:

MacBook:194.223.199.14
Printer:194.223.199.161

Net Mask:255.255.255.0

Ip of MacBook is assigned By DHCP server and is based on Mac Address so it is always the same.
 
Those are internet (WAN) IP addresses - I'm guessing you're at a school or corporation that uses switches and configurable high-end router equipment? Unfortunately I have no experience on that equipment - hope someone else here does.

Any chance you have added a wireless access point/router?

On consumer-level routers, local versus WAN IP addresses are hard-coded into the firmware that filters requests to be sent to a higher-level DNS server versus the local hosts list. In other words, in my home, for instance, if my computers and printer had routable (WAN) IP addresses, a request to print would be sent outside of my router and come back to my router only to find that that port wasn't open. I hope that makes sense.
 
IP addresses are not hard-coded into firmware anywhere, I believe. It'd be very stupid.
 
You're right - and that isn't exactly what I meant to say....:)
But consumer routers (I'm not saying all of them here either) will go out to the WAN side when given a request for a routable IP+port - regardless of what IP addresses the local (inside) devices have. I have seen this issue in printing before.

Some knowledgable person will be able to tell us if the reason for that behavior is strictly that the routable addresses were statically assigned and not what the router would have given via DHCP. I don't know -- just trying to bring up some ideas.
 
Thanks for all response. Like somebody suggested before it is a company network, and to access network wireless we are using access point and in my opinion it acts the same as any other medium used for connecting. I would rather blame OS or printing server configuration like (CUPS), especially that I can ping the printer. I thought there might be some special settings which i don't know (I am not very familiar with MacOsX).

Any suggestions ?
 
Are you adding the printer using the IP printer > HP Jetdirect protocol in Printer Setup? (that equals port 9100 printing)
 
I didn't find direct solution of my problem couldn't print on the same printer when i was wireless but when i plugged Ethernet cable i could.
What I did ?
Set this printer as shared printer on windows machine and printed throu windows network. Works fine for ethernet and wifi.
Thanks for all replays.
 
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