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Product designation
3-4
PHOENIX CONTACT
6874_en_16
3.2.2
Assigning IP parameters
When the supply voltage is switched on or the reset button is pressed, the switch sends
requests (BootP requests) to assign IP parameters.
The assignment of valid IP parameters is vital to the management function of the switch.
Options for assigning IP parameters:
–
Configuration via the BootP protocol (default upon delivery)
–
Static configuration via the management interfaces
–
DHCP (Dynamic Host Configuration Protocol)
–
DCP (Discovery and Configuration Protocol)
3.2.2.1
Valid IP parameters
IP parameters comprise the following three elements: "IP address", "subnet mask", and
"default gateway/router".
Valid IP addresses are:
000.000.000.001 to 126.255.255.255
128.000.000.000 to 223.255.255.255
Valid multicast addresses are:
224.000.000.001 to 239.255.255.255
Valid subnet masks are:
255.000.000.000 to 255.255.255.252
Default gateway/router:
The IP address of the gateway/router must be in the same subnetwork as the address of the
switch.
3.2.2.2
Assigning IP addresses
The IP address is a 32-bit address, which consists of a network part and a user part. The
network part consists of the network class and the network address.
There are currently five defined network classes; Classes A, B, and C are used in modern
applications, while Classes D and E are hardly ever used. It is therefore usually sufficient if
a network device only "recognizes" Classes A, B, and C.
Figure 3-2
Position of bits within the IP address
The button must be held down for a few seconds to trigger a reset.
The "BootP" function can be deactivated via the management. By default upon delivery,
the "BootP" function is activated.
If the switch has not received any valid IP parameters, "01" or "dc" appears in the display
and one of the mode LEDs (ACT, 100 or FD) flashes.
Section 4.1.2 on page 4-1 describes the assignment of IP parameters with Factory
Manager 2.1.
Bit 1
Bit
3
2
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