Administrator Guide

S5000 Debugging and Diagnostics

Topics:

• Oine Diagnostics

• Trace Logs

• Hardware Watchdog Timer

• Using the Show Hardware Commands

• Enabling Environmental Monitoring

• Buer Tuning

• Troubleshooting Packet Loss

• Enabling Application Core Dumps

• Mini Core Dumps

• Enabling TCP Dumps

Oine Diagnostics

The diagnostics tests are grouped into three levels:

• Level 0 — Level 0 diagnostics check for the presence of various components and perform essential path verications. In addition,

Level 0 diagnostics verify the identication registers of the components on the board.

• Level 1 — A smaller set of diagnostic tests. Level 1 diagnostics perform status/self-test for all the components on the board and test

their registers for appropriate values. In addition, Level 1 diagnostics perform extensive tests on memory devices (for example, SDRAM,

ash, NVRAM, EEPROM) wherever possible.

• Level 2 — The full set of diagnostic tests. Level 2 diagnostics are used primarily for on-board loopback tests and more extensive

component diagnostics. Various components on the board are put into Loopback mode and test packets are transmitted through those

components. Level 2 diagnostics also perform snake tests using virtual local area network (VLAN) congurations.

NOTE

: Diagnostic is not allowed in Stacking mode, including member stacking. Avoid stacking before executing the diagnostic

tests in the chassis.

Important Points to Remember

• You can only perform oine diagnostics on an oine standalone unit or oine member unit of a stack of three or more. You cannot

perform diagnostics on the management or standby unit in a stack of two or more; if you do, a message similar to this displays:

Running Diagnostics on master/standby unit is not allowed on stack.

• Perform oine diagnostics on one stack member at a time.

• Diagnostics only test connectivity, not the entire data path.

• Diagnostic results are stored on the ash of the unit on which you performed the diagnostics.

• When oine diagnostics are complete, the unit or stack member reboots automatically.

1070 S5000 Debugging and Diagnostics