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78 Chapter 3: EIU datafill
297-8991-910 Standard 03.01 August 1999
Supplementary information
The TRANSLATE command in the NETMAN tool can be used to convert an
IP address into network parameters and vice versa.
Observe the following criteria required for the subnet:
• the subnet size must be the same as the subnet size used on the LAN-side
of the EIU
• the subnet must be in the range 2 to 22 and is further validated based on the
class of network
• a Class A network (first octet of IP address is within the range 1 to 127)
can have a subnet size from 2 to 22
• a Class B network (first octet of IP address is within the range 128 to 191)
can have a subnet size from 2 to 14
• a Class C network (first octet of IP address is within the range 192 to 223)
can have a subnet size from 2 to 6
This secondary validation is not performed until the table is committed, at wh1
47 209 192 11 12ich point it fails with an error message DATA
CONSISTENCY ERROR if this criteria is not met.
For examples on addressing, refer to “Appendix F: EIU addressing examples”.
Table IPROUTER
Table IPROUTER is part of the implementation of TCP/IP protocols on the
SuperNode switch. This table provides the following functionality:
• provides compatibility with third-party host machines for connection setup
and data exchange
• adds routing tables and algorithms to the IP as part of its addressing
function
• defines and distributes configurable information that is associated with the
TCP/IP using table control and the distributed data manager
Table IPROUTER stores Internet-specific information from each of the EIU,
or routers, in the SuperNode switch.
IPROUTER table contains the list of EIUs and their corresponding
parameters, as described in table 13. This table is required to configure an EIU
as an Internet node.
Note: Table IPROUTER is not required for interface EIUs.