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HCD-E1 Installation & Operation Manual Appendix E - IR-IP Interface Module
Performing Preliminary Configuration E-7
IP Learning Mechanism
To simplify the configuration process, IR-IP has a special mechanism for
configuring the IP address of its LAN interface. Setting section 1, called IP
address learning, of the IR-IP DIP switch (Figure E-3) to ON enables this
mechanism.
The IP learning mechanism enables IR-IP to learn its LAN interface IP
address by receiving frames sent by a ping utility to the prescribed LAN IP
address.
Note
To use the IP learning mechanism, you do not need to know the current
address of IR-IP LAN interface, but only the prescribed IP address.
The IP address is actually retrieved from the ARP frames sent during pinging
to locate the ping destination, not from the ping frames.
To ensure that the process is correctly performed, it is recommended to
check the contents of the ARP table before starting the ping utility, to make
sure that it does not contain the address to be assigned to the IP router LAN
interface.
To view and edit the ARP table contents:
If the Telnet host you are using runs under Microsoft Inc. Windows™ 95, 98
or NT, use the following procedure to view and edit the ARP table contents:
1. Display the table using the arp -a command.
2. If the table includes the intended IP address, remove it from the table
using the arp -d command.
If for some reason the IP learning process does not succeed, before
repeating it make sure to remove the IP address from the table.
Assigning a LAN IP Address to a New IR-IP
The following procedure enables you to configure the LAN IP address of a
new IR-IP router, i.e., a router using the default parameters (see the
Accessing the IR-IP Management Subsystem section above).
If HCD-E1 is already operating, skip Step 2 in the following procedure.
To configure the IP router LAN address:
1. Make sure the preparations described above have been completed,
including the configuration of the ping utility.
2. Turn HCD-E1 on and monitor the IP router indicators:
The INT indicator turns on
The ERR indicator lights steadily for approx. 15 seconds, and then
starts flashing at a rapid rate (about three times per second).
If the ERR indicator turns off, skip to the What to Do If ... section below.
3. Set section 1 of IR-IP DIP switch to ON.
The ERR indicator starts flashing faster (approximately four times a
second).