Solving Problems With Discovery; Discovery And Policy Updates Run Slowly; Discoveries Frequently Time Out; Some Printers On The Network Cannot Be Discovered - Lexmark C792 Administrator's Manual

Solving problems with discovery

Discovery and policy updates run slowly

1
Check your proxy, firewall, and other network settings on LDD components to make sure all necessary
communication is allowed.
2
Make sure other network traffic is not reducing bandwidth during discoveries and policy updates.
3
If you have three or more servers in your system, try reducing the Chunk Size using the General service on the
Services tab. A value as low as 2 may improve performance.
4
To reduce the time waiting for non-responsive printers during policy updates, reduce the Timeout per device
using the PolicyUpdate service on the Services tab.
Note: If you are deploying solutions that include large eSF applications or several eSF applications, a lower setting
may not allow enough time to successfully validate eSF application deployment.
5
If you are discovering printers for subsequently added discovery profiles in a device group or groups in which
you have previously discovered printers, select Discover new devices only to skip any IP address where a printer
has been discovered.

Discoveries frequently time out

1
Check your proxy, firewall, and other network settings on LDD components to make sure all necessary
communication is allowed.
2
Make sure other network traffic is not reducing bandwidth during discoveries and policy updates.
3
If you have three or more servers in your system, try increasing the initial time-out and retry times using the
NPA service on the Services tab. Type a time-out period in milliseconds for each retry in sequence, separating
each by a space, in the NPANT Timeout field.

Some printers on the network cannot be discovered

1
Check your proxy, firewall, and other network settings on LDD components to make sure all necessary
communication is allowed.
2
On the Services tab, make sure the Read Community Name and Write Community name for the SNMP service
match the printers on the network. All printers used in the LDD system must use the same read community name
and write community name.
Troubleshooting
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