A printer can be tested to see if it supports LPR communication by doing the following:
In Windows:
- Click on Start -> Run
- Key: cmd and hit Enter
- At the command prompt screen, key: telnet X.X.X.X 515 (where X = IP address of the printer in question)
- If a blinking cursor or no error appears, port 515 is open
- If a "Connection Refused" or "Connection failed" error returns, that printer either does not support LPR communication, or it is not enabled
In Linux:
- Open a Terminal
- Key: telnet X.X.X.X 515 (where X = IP address of the printer in question)
- If a message of "Connected to X.X.X.X" appears, port 515 is open
- If it returns "Trying to connect to IP" and hangs, the port is not open
Printing through port 9100 is available with NDPSGW.NLM version 3.01 dated May 5, 2004 and later
The ability to create a printer in iManager using port 9100 is available with NetWare 6.5 SP 2 and later
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