D9412GV2/D7412GV2 | Troubleshooting Guide | 3.0 Troubleshooting
.
Bosch Security Systems, Inc. | 11/05 | F01U011024B 85
Using the ARP Command to Assign or Confirm an IP
Address
Figure 41: DOS Window
1. Obtain the Internet address (IP address) from the
network administrator.
The IP address is an identifier for a
computer or device on a TCP/IP network
and allows the network to route messages
based upon the IP address of the
destination.
Within an isolated network, IP addresses
can be assigned at random if each address
is unique. Connecting a private network to
the Internet requires using registered IP
addresses (Internet addresses).
The format of an IP address is a 32-bit
numeric string written as four numbers
separated by periods. Each number can be
zero to 255. For example, 172.17.10.70
could be an IP address.
In the following examples, the letter “x” is
used to indicate all digits. If any of the four
elements in the string have fewer than three
digits, no leading zeros are used.
xxx.xxx.xxx.xxx
xx.xx.xx.xx
x.x.x.x
xxx.xx.x.xxx
5. At the DOS command line, enter the ARP
command:
a. Type: arp –s
b. Press [SPACE].
Type the IP address and press [SPACE].
Type the MAC hardware address and press [ENTER].
Refer to
. Figure 42
Figure 42: ARP.EXE Command Syntax
ar p - s xxx. xxx. xxx. xxx zz- zz- zz- zz- zz- zz
1 2
1 xxx.xxx.xxx.xxx = the IP address assigned to the
NIM by the network administrator
2 zz-zz-zz-zz-zz-zz = the MAC hardware address
found on the NIM
2. Identify the physical address (MAC hardware
address) on the network interface module (NIM).
6. Following your command, the computer responds
with a DOS prompt to indicate the address was
accepted.
The MAC hardware address is located on a
label on the large metal box soldered to the
No indication is provided if the operation
DX4020 or D9133TTL-E Network Interface
Module.
The MAC address has twelve characters in
pairs, separated by hyphens. In the
following example, the letter “z” is used to
indicate all characters.
zz-zz-zz-zz-zz-zz
is performed correctly. The absence of an
error message is your indication that the
function is correct.
7. To confirm that the IP address was correctly
entered into the ARP table, type:
arp -g [ENTER]
An “interface” table appears on the screen. Refer
to
on page 86. Figure 43
3. Open a DOS window from the Start menu by
selecting Start Æ Run.
8. Check the interface table for the addresses you
entered.
on page 86Figure 43 shows the IP address
and the corresponding MAC hardware address.
The third line of the interface table in
4. At the Run dialog box, type COMMAND and click
OK. A DOS window appears. Refer to
. Figure 41
Figure 43
shows the sample MAC address 00-20-4a-51-
19-8c temporarily linked to IP address
172.17.10.70.
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