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LPR and bidirectional communcation.

Posted on 2006-11-14
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Last Modified: 2010-05-18
I have a canon pixma ip4300 printer and a Draytek vigor 2800 router. The draytek has an LPR printserver built in.

When I connect the printer to the router, I can use the printer from different windows machines, but bidirectional communication doesn't seem to work, even though the 'tcp printer port' is configured as such. The bidirectional communication is used for things like reporting ink levels and duplex printing.

Is there any way to get this working using an LPR printserver?
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Question by:MerijnB
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Herman D'Hondt earned 500 total points
ID: 17941832
LPR is uni-directional, designed to get output to the printer, not the reverse. The only general purpose way to get printer status over the network is via SNMP, which, like LPR, *only* operates over the network, not over parallel or usb ports from the printserver to the printer.

If your printer has its own network i/f then LPR can talk directly to the printer, without the printserver, and SNMP can be used to get status - as can other methods, depending on the printer.
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by:Herman D'Hondt
ID: 17942230
What I'm trying to say is that there is no general way to get printer info via LPR from a printserver. That is only possible if you connect direct to the printer.

It's possible in theory to design a printserver that can do it, if 1) the printserver knows how to get the info from the printer (and that is printer specific), and 2) it uses SNMP or something similar to make it available across the network
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by:MerijnB
ID: 17988005
ok, clear, thanks for the explanation.. :)

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