Novell LINUX ENTERPRISE SERVER 10 - INSTALLATION AND ADMINISTRATION 04-08-2006 Installation Manual page 469

Checking the TCP/IP Network
The TCP/IP network and name resolution must be functional.
Checking a Remote lpd
Use the following command to test if a TCP connection can be established to lpd
(port 515) on host:
netcat -z host 515 && echo ok || echo failed
If the connection to lpd cannot be established, lpd may not be active or there
may be basic network problems.
As the user root, use the following command to query a (possibly very long)
status report for queue on remote host, provided the respective lpd is active
and the host accepts queries:
echo -e "\004queue" \
| netcat -w 2 -p 722 host 515
If lpd does not respond, it may not be active or there may be basic network prob-
lems. If lpd responds, the response should show why printing is not possible on
the queue on host. If you receive a response like that in
Message from the lpd"
Example 24.2 Error Message from the lpd
lpd: your host does not have line printer access
lpd: queue does not exist
printer: spooling disabled
printer: printing disabled
Checking a Remote cupsd
By default, the CUPS network server should broadcast its queues every 30 seconds
on UDP port 631. Accordingly, the following command can be used to test whether
there is a CUPS network server in the network.
netcat -u -l -p 631 & PID=$! ; sleep 40 ; kill $PID
If a broadcasting CUPS network server exists, the output appears as shown in
ample 24.3, "Broadcast from the CUPS Network Server"
Example 24.3 Broadcast from the CUPS Network Server
ipp://host.domain:631/printers/queue
(page 469), the problem is caused by the remote lpd.
Example 24.2, "Error
Ex-
(page 469).
Printer Operation 469