Reference:Configuration/ETH/DHCP
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The DHCP function can either be disabled in DHCP Disabled mode or operated in DHCP Client or in DHCP Server mode. The DHCP function of the Ethernet interface has four operating modes in total:
- Disabled: The IP-Adresse and other parameters are configured manually.
- Server: The IP parameters are configured manually in DHCP Server mode (standard IP-Adresse 192.168.0.1). The DHCP server is on and should be configured accordingly as described in chapter "Configuration/ETH0-1/DHCP Server".
- Client: In DHCP Client mode, the device receives its IP configuration from a DHCP server to whose network the device is connected.
- Automatic: The first time the device is switched on (powered up), ETH0 works as a DHCP client. After a restart through briefly pressing the Reset button, the ETH0 interface is allocated the configured IP-Adresse. If an IP address was not explicitly configured (see chapter "Configuration/ETH0-1/IP"), the IP address 192.168.0.1 is specified as standard.
In the as-shipped state, ETH0 is configured in DHCP Automatic mode with the IP address 192.168.0.1 and ETH1 is configured in DHCP Disabled mode with the IP address 192.168.1.1.
Caution DHCP Automatic mode should not be used for normal operation, since an accidental restart switches the operating mode.