For BlackDiamond 8800 and BlackDiamond X8 series switches, the system health checker tests the data link by default.
The 10 Gbps links (BlackDiamond 8000 a-, c-, e-, xl-, and xm-series modules)—the system health checker tests every five seconds for the specified slot.
Note
Enabling backplane diagnostic packets increases CPU utilization and competes with network traffic for resources.