Failover Detection Points (Sun Enterprise 10000 SSP 3.5 User Guide)

Sun Enterprise 10000 SSP 3.5 User Guide

Failover Detection Points

The following figure illustrates the standard layout of a dual SSP and control board configuration required for automatic failover. The numbers identify points of failure that are detected by the fod daemon, and are summarized in Table 10-2.

Figure 10-6 Automatic Failover Detection Points

The following table summarizes each failure condition and the resulting failover actions. For each failure point, refer to the detailed description of that failure point provided in the next section.

Table 10-2 Summary of Failover Detection Points and Actions


Failure Point	SSP Failover	SSP Failover Disabled	Control Board Failover	Control Board Failover Disabled
1 Main SSP to Domains	X
2 Spare SSP to Domains		X
3 Main SSP	X
4 Spare SSP		X
5 Main SSP to Spare Hub		X		X
6 Spare SSP to Main Hub		X
7 Main SSP to Main Hub	X
8 Spare SSP to Spare Hub		X
9 Main Hub			X
10 Spare Hub		X		X
11 Primary Control Board to Main Hub			X
12 Spare Control Board to Spare Hub				X
13 Primary Control Board			X
14 Spare Control Board				X