Zebra Mobile Printer Wireless Troubleshooting Steps

Article ID: 78451252

Details


 

Symptom

Wireless Zebra printer experiencing wireless connectivity issues

Applies To

All Wireless Zebra Mobile Printers.

Overview

Below are the commands that can be used to try to assist in troubleshooting wireless connectivity issues.  Also, always ensure that you are running current firmware on your printer as there may be enhancements or corrections to issues that may be occurring.  For firmware upgrade information  Read More>>

Solution

! U1 setvar "wlan.keep_alive.enable" "on"

This command is in place to assist with access points that disassociate wireless after a period of inactivity. We have found that it was necessary to overcome an issue with Cisco access points in which a printer went out of range of an access point for a period of time and then came back in range of the access point. The symptom was that the printer wouldn't reconnect.

! U1 setvar "ip.roam_packet" "on"

The command ip.roam_packet is used to overcome issues that are inherent to Cisco controllers and others when they have passive clients and static ip addressing.

These controllers and others tended to disconnect passive devices that did not broadcast their IP address.   The roaming packet essentially is broadcasting the printers Ip address to insure that the controller or other devices are not disconnecting them.

Cisco and other vendors have workarounds that customers should consider. Cisco recommends that the controller be setup for mac address filtering and the filter for the printers mac address is to include the Ip address (static ip addressing).   This is documented in the knowledgebase. Cisco Controller mobile printer static IP address If they are still expecting Zebra to help them we can use the ip.roam_packet. See the Solution Read More>>

! U1 setvar "wlan.power_save" "off"

! U1 setvar "wlan.keep_alive.enable" "on"

! U1 setvar "wlan.power_save" "off"

! U1 setvar "ip.roam_packet" "on"

One other command that has been used in an attempt to speed up roaming issues is the channel mask command. This is often used if one can determine the channels  that are being used in a wireless infrastructure. This command instructs the printer to only use the channels necessary for a particular infrastructure.

Example:

! U1 setvar "wlan.channel_mask" "421"

The command above would  set the printer to only use channels 1 6 and 11

It sets a channel mask of 421

Channel 11 10 9 8 7 6 5 4 3 2 1
1 0 0 0 0 1 0 0 0 0 1

Helpful information

Sending File Using ZDesigner Driver  Read More>>

Sending File Using Zebra Setup Utilities  Read More>>

Recommended Settings for Cisco Access Points  Read More>>