Reset Search
 

 

Article

How to Diagnose-hardware failures using EXOS

« Go Back

Information

 
TitleHow to Diagnose-hardware failures using EXOS
Objective
How to test or verify for hardware failure
Environment
Summit family Switch 
BlackDiamond
EXOS
Procedure
To run diagnostics on I/O or MSM/MM modules, use the following command:
 
run diagnostics [extended | normal | stack-port] {slot [<slot> | A | B]}

Where the following is true:
  • extended —Takes the switch fabric and ports offline and performs extensive ASIC, ASIC-memory, and packet loopback tests. Extended diagnostic tests take a maximum of 15 minutes. The CPU is not tested. Console access is available during extended diagnostics.
If you have a Power over Ethernet (PoE) module installed, the switch also performs an extended PoE test, which tests the functionality of the inline power adapter.
  • normal —Takes the switch fabric and ports offline and performs a simple ASIC and packet loopback test on all ports.
  • <slot> —Specifies the slot number of an I/O module. When the diagnostic test is complete, the system attempts to bring the I/O module back online.
  • A | BSpecifies the slot letter of the primary MSM. The diagnostic routine is performed when the system reboots. Both switch fabric and management ports are taken offline during diagnostics.

To run diagnostics on Summit family switches, use the following command:
 
run diagnostics [extended | normal | stack-port] {slot [<slot> | A | B]}
 
Where the following is true:
extendedReboots the switch and performs extensive ASIC, ASIC-memory, and packet loopback tests. Extended diagnostic tests take a maximum of 5 minutes. The CPU is not tested.
normal —Reboots the switch and performs a simple ASIC and packet loopback
stack-port —Performs a BERT on the stacking ports and reboots the switch.
Additional notes
The switch provides a facility for running normal or extended diagnostics. In simple terms, a normal routine performs a simple ASIC and packet loopback test on all ports, and an extended routine performs extensive ASIC, ASIC-memory, and packet loopback tests. By running and viewing the results from diagnostic tests, you can troubleshoot and resolve network issues. On BlackDiamond 8800, 10808, and 20800 series switches, you can run the diagnostic routine on Input/Output (I/O) modules or management modules (MSMs/MMs) without affecting the operation of the rest of the system.

On BlackDiamond 12800 series switches, you run the diagnostic routine on all installed I/O modules and the primary MSM. The switch does not test the backup MSM on the BlackDiamond 12804. Running diagnostics affects system operation.

On Summit family switches, you run the diagnostic routine on the switch or on the stacking ports.Running the switch or stacking port diagnostic routine affects system operation; the switch is
unavailable during the diagnostic test.

When you run diagnostics on an I/O module, an MSM/MM, or a Summit family switch, the switch verifies that the:
● Registers can be written to and read from correctly.
● Memory addresses are accessed correctly.
● Application-Specific Integrated Circuit (ASICs) and Central Processing Unit (CPUs) operate as required.
● Data and control fabric connectivity is active (modular switches only).
● External ports can send and receive packets.
● Sensors, hardware controllers, and LEDs are working correctly.


This information was found in page 409-412 of ExtremeXOS Concepts Guide, Software Version 12.5 Rev. 03
 

Feedback

 

Was this article helpful?


   

Feedback

Please tell us how we can make this article more useful.

Characters Remaining: 255