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Chapter 2: EIU messaging protocols 55
DMS-100 Family EIU User Guide TELECOM12
“Appendix E: Understanding IP and IP addressing” for more information on
Internet addressing.
The IP address features and restrictions within the SuperNode switch are as
follows:
• The Class A, B, and C address schemes are supported. The Class D and E
schemes are not supported.
• The IP addresses for all SuperNode hosts are assigned through DMS table
control (tables IPNETWRK, IPROUTER, and IPHOST).
• The IP addresses for all SuperNode hosts are on a single subnet.
• The EIU is assigned two IP addresses: one to address the SuperNode side
subnet and other to address Ethernet LAN side subnet. Both EIU addresses
cannot be assigned on same subnet number. Refer to figure 13 in this
chapter.
• The EIU Ethernet side IP address MUST be the same class and network as
the SuperNode side.
• The SuperNode node IP address can be changed at any time. However,
UDP/TCP applications are affected.
• The EIU host application is addressed from within the SuperNode switch
or from external LAN workstations by addressing the EIU SuperNode side
IP address. The exception is the routing information protocol, which uses
the LAN side IP address.