Firewalls restrict data transferred over the network only to those items specifically approved by the network administrator. This can have the effect of making a network connected printer such as the Zebra P640i unavailable to network users.
If a personal firewall is installed on the PC you are using to set up the P640i Ethernet option:
1.Probing for the printer will fail if the firewall does not allow broadcast UDP (User Datagram Protocol) requests.
2.Probing for the printer will fail if the firewall does not accept responses from UDP probes (often because the firewall does not properly register the outgoing UDP port as valid for response traffic).
3.Probing for the printer will fail if the firewall disallows packets destined for UDP port 9099.
4.Printing and printer communications will fail if the firewall disallows packets destined for TCP (Transmission Control Protocol) port 9100.
The above caveats apply equally to a firewall installed in a network router, the difference being that such a firewall affects ALL traffic across it, not just traffic to and from a lone PC.
If probing fails, you could in theory enter manually the IP address for the printer in the appropriate driver setup screen. However, because the IP address is not known until the printer is configured, this is a Catch 22 situation.
Configuring the Ethernet optionInstalling any device via Ethernet can be challenging, even to the experienced technician. There is no universal formula for success. If you do not achieve satisfactory results after following the directions given here, contact Zebra support for further advice.
Hardware setupMake sure the computer on which you are installing the P640i is connected to the network.
Switch on the printer, then test for functionality by printing a test card (press the PRINT button).
Connect the Ethernet port (RJ45 receptacle) on the P640i printer to the network through a hub, switch or router. Use only a
1.Obtain from your network administrator the following three sets of numbers: Static IP address, Netmask (a.k.a. Subnet mask), Gateway (optional).
2.Using either downloaded software or the provided CD, display the Zebra printer setup screen, then click Install a Printer and Driver:
3. Select Ethernet (Internal), then click Next.
4.Click Browse, and allow the computer to search for the printer’s default IP address.
5.Note the serial number of the P640i printer you are installing, then look for that number on the Browse screen (which may list more than one printer). Click that number to highlight it, then click OK.
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