Why does the CS141 not communicate its host name to a DNS server, although I have entered the IP address of the server at the DNS settings?

By system / network design, this is not the task of a CS141. If you set the CS141 to DHCP, it contacts the DHCP server during the boot process and communicates for the host name it would like to use.

The DHCP server may accept the request, assigns an IP address and, depending on the configuration, will either comply with the request, i.e. forward the host name to the DNS server. Since a DHCP can also overwrite a host name, the result depends on the configuration of the network, e.g.:

• The IP address is assigned, but no automatic DNS entry is available.
• The IP address is assigned and the host name request of the CS141 is available via DNS.
• The IP address is assigned and the host name request of the CS141 is overwritten.

Note:

If you reserve or block the IP address within the DHCP server and configure the CS141 to use a manual IP address setup, the CS141 will not "register" at system start-up: The fact that the CS141 starts with its own IP address and that the reservation in the DHCP server ensures that the IP address is not assigned elsewhere does not necessarily mean that the DNS server also automatically gets a lookup entry - this to check is a task of an administrator.