Sample configuration of a network with DHCP address allocation
Configuration of the PABX system in its initial settings
1
NT
2
NT / Splitter
3
Connection for the service provider
4
Modem
5
Network PC 2 at HUB / Switch
6
PC 1 at USB port
IP address for the PABX:
192.168.1.250
Subnet mask:
255.255.255.0
Start address DHCP:
192.168.1.50
Number of DHCP addresses:
20
PC1
IP via DHCP:
192.168.1.50 transmitted automatically via DHCP.
Gateway:
transmitted automatically via DHCP.
DNS server:
transmitted automatically via DHCP.
Subnet mask:
transmitted automatically via DHCP.
PC2
IP via DHCP:
192.168.1.53 transmitted automatically via DHCP.
Gateway:
transmitted automatically via DHCP.
DNS server:
transmitted automatically via DHCP.
Subnet mask:
transmitted automatically via DHCP.
In the example given here, the IP addresses for the clients (PCs) can lie within a range from IP 192. 168. 1. 50 to 192.
168. 1. 69. The IP addresses are assigned in the order that the clients (PCs) request them (for example by switching on
the PCs). If an IP address is released (for example by switching off a PC) that IP address is then available to be
re-assigned again.
Address assignment without DHCP (set / mixed IP addresses)
You can dispense with a DHCP server in a network or also configure LAN clients (PCs) with set IP addresses as an ad-
dition to the DHCP clients.
Note
Much more time and effort is involved for configuring the network if a configuration is chosen without DHCP. If
Address assignment by DHCP -Recommended configuration - (Default setting) Configuration examples
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a/b1
a/b2
a/b3
a/b4
a/b5
a/b6
a/b7
a/b8
1
2
NO
1
2
NO
S0 intern
S0 extern
a/b1
2a/b
1a/b
3a/b 4a/b
Modul
S0 intern
2a/b
1a/b
3a/b
4a/b
5a/b
6a/b
a2 a1 b1 b2
Pow
er
ISD
N /
PO
TS
DS
L
LAN
USB
Modem
1
2
3
4
5
6
