Technicolor COM1000, Руководство интегратора

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A.2 IP_C
ONFIG
The IP_Config field allows you to select one of nine possible modes for assigning IP addresses
to the COM24 cards. A detailed description of each of these modes is given below.
0 = Default
This mode is programmed into the cards during the manufacturing process. In this mode,
each card generates a unique IP for itself using the following formula:
192.168.3.[ 1 +
( Chassis_ID
x
16 )
+
Slot_ID ]
Example: The card in slot #1 of chassis #1 is assigned an IP address of
192.168.3.18
.
It is important to note that the COM24 cards do not possess a “default” IP address, and this
mode will not restore a card‟s original IP address in the event that a mistake is made when
changing these settings.
1 = DHCP_Persistent
This is the setting recommended for any COM1000 system that is
installed on a network expected to contain a DHCP server.
This mode will ensure that the cards will always have the same IP addresses, as each card
will store the initial IP address assigned to it in its memory and request the same address
from the DHCP server every time it reboots.
Because this mode stores the card‟s DHCP address to non-volatile memory, you may
choose to allow a DHCP server to assign unique IP addresses to the cards only during the
initial configuration process. The cards will continue to use these addresses after this
initial assignment even if there is no permanent DHCP server in the network.
If this mode is used and the system is initially set up in the absence of a DHCP server, be
aware that if they are ever rebooted in the presence of a DHCP server, the cards will
interpret it as being the “initial” setup and will be assigned new IP addresses. In this case,
you will lose communication with the COM24 cards until you reconfigure your computer‟s
IP interface so that it resides on a subnet compatible with the cards‟ new IP addresses.