Tcp/Ip Troubleshooting - Digisol DG-PS1010U User Manual

TCP/IP Troubleshooting

When you are configuring a new print server on your NT/UNIX server through LPR Port printing
under TCP/IP protocol, you might encounter the following problem in your initial installation steps:
" I can do the "arp" command. However, when I am going to ping or tftp the print server, it
always shows Request timed out. I have checked the print server's power and it exactly passed
the POST. Besides, the network cabling is OK. As such, I can't do tftp command to get and put the
print server's configuration file and save its IP address permanently. I can't, therefore, continue
installing the print server."
Regarding this problem, there are three possible causes:
A. The print server's Node ID you specified in the "arp" command is not correct.
If this is the case, please ensure the Node ID field in the corresponding entry of the print server's
IP address in NT's ARP cache table is correct by typing the following command at NT's DOS
prompt. "arp -a"
If the Node ID shown on the screen doesn't match the print server's Node ID, please follow the
instructions below to reset the entry.
1. At NT's DOS prompt, type "arp -d <print server's IP address>" to delete the current entry.
2. Type "arp -s <print server's IP> <print server's Node ID>" to specify a new ARP entry.
3. Refer to Chapter 7 for the detailed instructions to complete the installation.
B. The print server's IP address is duplicated or is as same as another computer's IP
address on the network.
If this is the case, please consult your network administrator to obtain an unused IP address for
your print server.
C. The print server is on one segment and your Windows NT server is on the other
segment.
(This troubleshooting guide will also apply to a multiple-segmented network while installing the
print server)
For example, assuming the print server is on Segment A, NT server is on Segment B, and there is
a gateway computer between Segment A and Segment B. The network might be a complete
TCP/IP network, or a hybrid of TCP/IP and IPX/SPX network.
If this is the case, you have to adopt the following steps, depending on which platform the gateway
computer is.
a. If the gateway computer is a NT/UNIX server:
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DG-PS1010U User Manual