Pressure Systems, Inc.

98RK-1 & 9816 User’s Manual©

 

 

CHANGE MODULE’S IP ADDRESS RESOLUTION METHOD & RE-BOOT (UDP/IP Command 'psirarp')

Purpose: To change (toggle) the current IP address resolution state (ipaarpst) of a specified module, and then unconditionally “re-boot” it.

Command

psirarp ethadr

where ethadr is the Ethernet Address of the specified module in the

 

 

following special hex-digit format ‘xx-xx-xx-xx-xx-xx’

 

 

Response

none (module reboots).

 

 

Description: When a NetScannerSystem module receives this broadcast command (by continuously monitoring port 7000) it responds by toggling its current ARP method to one of two states: dynamic resolution or static resolution. Then it restarts its firmware. The result is essentially the same as a power up restart, in that any TCP/IP connection is lost, and the module returns to its normal startup state. However, if it used the static resolution method before it received this command, after the reboot it will not have a valid IP Address until an external network server (RARP or BOOTP) provides it with one. However, executing the command a second time will restore it to using its original statically assigned IP address (after another reboot finishes).

Just as for the “psireboot” command, the host must wait long enough for the reboot process to be completed before it can again address the module.

Example:

Reconfigure a specified module on the network so that it uses its “other” IP Address Resolution method, and also reboot it. Presumably, it knew the module’s current state (iparpst) as result of a recent Network Query response from the module.

"psirarp 12-34-56-78-90-12" Response:

(None)

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Pressure Systems 98RK, 9816 user manual Command Psirarp ethadr, Psirarp 12-34-56-78-90-12 Response None