Service Manual

Debugging and Diagnostics

The basic debugging and diagnostic commands are supported by the Dell Networking Operating System (OS).

This chapter contains the following sections:

• Offline Diagnostic Commands

• Hardware Commands

Topics:

• Offline Diagnostic Commands

• diag stack-unit

• offline stack-unit

• online stack-unit

• Hardware Commands

• clear hardware stack-unit

• clear hardware system-flow

• show hardware layer2 acl

• show hardware layer3

• show hardware stack-unit

• show hardware buffer interface

• show hardware counters interface interface

• show hardware stack-unit buffer-stats-snapshot (Total Buffer Information)

• show hardware buffer-stats-snapshot

• show hardware system-flow

• show hardware drops

Offline Diagnostic Commands

The offline diagnostics test suite is useful for isolating faults and debugging hardware. While tests are running, the Dell operating system

results are saved as a text file (TestReport-SU-X.txt) in the flash directory. This show file command is available only on master and

standby.

Important Points to Remember

• Offline diagnostics can only be run when the unit is offline.

• You can only run offline diagnostics on a unit to which you are connected via the console. In other words, you cannot run diagnostics

on a unit to which you are connected to via a stacking link.

• Diagnostic results are printed to the screen. The Dell Networking OS does not write them to memory.

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

Debugging and Diagnostics 399