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Contents ix
Tuning the High and Low Water Marks at Boot Time. . . . . 29
Tuning the Socket Options . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
MTU Path Discovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
▼ To Tune the Maximum Transfer Unit (MTU) . . . . . . . . . 30
▼ To Disable MTU Path Discovery . . . . . . . . . . . . . . . . . . . 31
▼ To Tune the Target Token Rotation Time (TTRT). . . . . . 31
5. Troubleshooting and Diagnostics . . . . . . . . . . . . . . . . . . . . . . . 33
Troubleshooting Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
▼ To Check the Connection to the Station . . . . . . . . . . . . . 34
▼ To Check the Connections Between Stations . . . . . . . . . 34
▼ To Check the Link Status Indicator . . . . . . . . . . . . . . . . . 34
Checking the MAC Address. . . . . . . . . . . . . . . . . . . . . . . . . . 35
▼ To Check the SunFDDI/P Driver. . . . . . . . . . . . . . . . . . . 36
▼ To Check the IP Addresses . . . . . . . . . . . . . . . . . . . . . . . . 36
▼ To Check the IP Routing . . . . . . . . . . . . . . . . . . . . . . . . . . 37
▼ To Check the Protocol Statistics . . . . . . . . . . . . . . . . . . . . 37
▼ To Check the SMT Traffic . . . . . . . . . . . . . . . . . . . . . . . . . 38
Solving Common Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Running the Hardware Self-Test Program . . . . . . . . . . . . . . . . . 44
▼ To Run the Hardware Self-Test . . . . . . . . . . . . . . . . . . . . 44
Loading the Device Driver Manually . . . . . . . . . . . . . . . . . . . . . 45
▼ To Configure and Load the Device Driver . . . . . . . . . . . 45
Part 2 —Planning and Implementing SunFDDI Networks
6. FDDI Network Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49