W&T 57630, Manual

Page: 19 / 211

19
W&T
Assigning the IP address
Subject to errors and modifications:
2.5 IP assignment via DHCP-/BOOTP protocol
Many networks use DHCP ( D ynamic H ost C onfiguration
P rotocol) or BOOTP for central and dynamic assignment of IP
addresses. Which of these two protocols should be used in
connection with the Web-IO makes no difference, since DHCP
is simply a backwards compatible extension of BOOTP. DHCP
servers thus also handle requests from BOOTP clients. The
following parameters can be assigned to the Web-IO using
these protocols:
.
IP address
.
Subnet mask
.
Gateway address
It is not possible to send additional parameters or lease-time.
Function
To obtain an IP address, the Web-IO sends a corresponding
BOOTP request as a broadast to the network following each new
start. The resulting reply generated by the DHCP/BOOTP server
contains in addition to the IP address the subnet mask and
gateway address as well. The Web-IO immediately places this
information in its non-volatile memory.
To start up the Web-IO in DHCP/BOOTP networks, contact your
system administrator. If DHCP is used to assign the address,
please indicate that a reserved IP address is needed. To
maintain the respective address database, the administrator will
need the Ethernet address of the Web-IO, which can be found
on the sticker on the housing:
5763x [Model]
EN=00c03d003fa0
OK xxxxxx
Ethernet address
After the administrator has made the necessary settings, the Web-
IO automatically gets the desired IP address after each reset. To
ensure that the Web-IO can be reached even if the DHCP/BOOTP