Configuration 09/02
CP 243-1
30 J31069-D0428-U001-A1-7618
4.2 Value ranges of the configuration data
4.2.1 IP address
The IP addresses to be specified at various points within the configuration must
comply with the general conventions defining IP address validity.
According to these conventions, certain IP addresses serve specific purposes.
These addresses will not be accepted by the CP 243-1. They include:
• Loopback: 127.0.0.0 - 127.255.255.255
• "Class D" addresses: 224.0.0.0 - 239.255.255.255
• "Class E" addresses: 240.0.0.0 - 247.255.255.255
• Broadcast addresses: e.g. 255.255.255.255
4.2.2 Subnet mask
If a subnet mask is specified during configuration, its structure must comply with
the general conventions defining subnet mask validity.
Please note that the validity of an IP address and an associated subnet mask are
interdependent.
4.2.3 TSAPs
The TSAPs consist of 2 bytes. The first byte specifies the connection and the sec-
ond byte is composed of the rack number and the slot of the communications
module. The following value ranges apply for the first byte.
• Local TSAP value range: 16#02, 16#10 - 16#FE
• Remote TSAP value range: 16#02, 16#03, 16#10 - 16#FE
The structure of the second byte is not checked by the CP 243-1.
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