Siemens CP 1515 User Manual page 209

Each Access Point RLM needs an unique IP address. Use either:
• DHCP , to obtain an IP address automatically, or
• manually enter an IP address
i
All Access Point RLMs must have a unique IP address value to allow
you to address each Radio Link Module specifically. Duplicate IP
address values may cause unexpected behavior of the network and/
or negative impact on network performance.
In case of manually assigning an IP address, use the field
to enter a value from the range of IP addresses assigned to your
organization.
The IP address is primarily used to address this Access Point RLM when you
use the RLM Manager program to configure and/or monitor this device.
When your organization does not use IP addressing, you can enter a user-
defined value. For example a value of the same pattern as the factory-set IP
address 153.69.254.254, where you replace the last three digits with a
numerical value in the range of "1" to "253" .
In case when a DHCP server is available on the network, an IP address will
be automatically assigned to the Radio Link Module by the DHCP server. To
enable automatically obtaining an IP address form the DHCP server, select
Industrial Ethernet Wireless LAN RLM Manager, CP 1515 Manager
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