HP 68302 User Manual page 480

If you have LAN connection problems
Try to "ping" the emulator:
ping <hostname or IP address>
If the emulator does not respond:
•
Check that switch 16 on the emulator is "1" (emulator is attached to LAN,
not RS-232 or RS-422).
•
Check that switch 15 on the emulator is in the correct position for your
LAN interface (either the AUI or the BNC).
Remember, if you change any switch settings on the emulator, the changes
do not take effect until you turn OFF emulator power and turn it ON again.
If the emulator still does not respond to a "ping," you need to verify the IP
address and subnet mask of the HP 64700. To do this, connect the HP 64700
to a terminal (or to the Terminal application on the PC), change the
emulator's switch settings so it is connected to RS-232, and enter the "lan"
command. The output looks something like this:
lan -i 15.6.25.117
lan -g 15.6.24.1
lan -s 255.255.248.0
lan -p 6470
Ethernet Address : 08000909BBC1
The important outputs (as far as connecting) are:
"lan -i"; this shows the internet address is 15.6.25.117 in this case. If the
Internet address (IP) is not what you expect, you can change it with the 'lan
-i <new IP>' command.
"lan -s"; shows the subnet mask is 255.255.248 (the upper 21 bits --
255.255.248.0 == FF.FF.F8.0). If the subnet mask is not what you expect,
you can change it with the 'lan -s <new subnet mask>' command.
"lan -p"; shows the port is 6470. If the port is not 6470, you must change it
with the "lan -p 6470" command.
Both the PC's subnet mask and the emulator's subnet mask must be identical
unless they communicate via a gateway or a bridge. Unless your Network
Chapter 14: Installing the Debugger
Step 3. Start the debugger
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