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7. RAS Information
This chapter describes the following RAS functions provided by the Ethernet Port.
CAUTION
1. Chapter 7 presents information related to using the functions provided by the Ethernet Port from a
T2N, including the instruction (request) format, important items that require attention, and sample
programs.
Make a point of understanding the content of chapter 4 thoroughly before writing programs that use
the Ethernet Port. The sample programs present basic examples of Ethernet Port usage, and should
be reviewed carefully before use in an actual system.
1. Ethernet Port status information
•Station status (T2N special registers)
•Down information (T2N interface buffer)
2. Test functions from user programs
•Remote port verification request (corresponds to the UNIX ping command)
•Inter-port loopback test (between T2N and T2N/T3H units)
3. Time setting function
4. Information provided by RAS information readout
•LAN controller (network circuit) information
•Protocol state
•State of the T2N-Ethernet Port interface
•Event trace