Printronix PrintNet P8000 Line User Manual page 208

Chapter 13
Periodic Ping
This periodic ping is different from the normal ping process. The
purpose of this ping is not an attempt at dead gateway detection.
There is no ping client created in the print server and the ICMP
Echo Reply packets received from the gateway are deleted without
being processed by the ping client. This reduces the processing
load on the print server. The data size of ICMP Echo Request
Message is set to 16 bytes such that the Ethernet frame is set to
64 bytes to minimize the impact of bandwidth on the network. This
process applies to all the active PrintNet interfaces.
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