Concept Guide

Test 15 - CPU Sdram Presence Test ................................... PASS
Test 16 - CPU Sdram Size Test ...................................... PASS
Test 17.000 - System Cpld Access Test ............................... PASS
Test 17.001 - Master Cpld Access Test ............................... PASS
Test 17.002 - Slave Cpld Access Test ................................ PASS
Test 17 - Cpld Access Test .......................................... PASS
Test 18 - CFast Presence Test ....................................... PASS
Test 19 - Management Phy Presence Test .............................. PASS
Trace Logs
In addition to the syslog buer, Dell EMC Networking OS buers trace messages which are continuously written by various Dell EMC
Networking OS software tasks to report hardware and software events and status information.
Each trace message provides the date, time, and name of the Dell EMC Networking OS process. All messages are stored in a ring buer.
You can save the messages to a le either manually or automatically after failover.
Auto Save on Crash or Rollover
Exception information for MASTER or standby units is stored in the ash:/TRACE_LOG_DIR directory. This directory contains les that
save trace information when there has been a task crash or timeout.
• On a MASTER unit, you can reach the TRACE_LOG_DIR les by FTP or by using the show file command from the ash://
TRACE_LOG_DIR directory.
• On a Standby unit, you can reach the TRACE_LOG_DIR les only by using the show file command from the ash://
TRACE_LOG_DIR directory.
NOTE
: Non-management member units do not support this functionality.
Hardware Watchdog Timer
The hardware watchdog command automatically reboots an Dell EMC Networking OS switch/router with a single RPM that is
unresponsive.
This is a last resort mechanism intended to prevent a manual power cycle.
Enabling Environmental Monitoring
The device components use environmental monitoring hardware to detect transmit power readings, receive power readings, and
temperature updates.
To receive periodic power updates, you must enable the following command.
• Enable environmental monitoring.
enable optic-info-update interval
Example of the show interfaces transceiver Command
DellEMC#show interfaces fortyGigE 1/52 transceiver
QSFP 52 Serial ID Base Fields
QSFP 52 Id = 0x0d
QSFP 52 Ext Id = 0x00
QSFP 52 Connector = 0x0c
QSFP 52 Transceiver Code = 0x04 0x00 0x00 0x00 0x00 0x00 0x00 0x00
QSFP 52 Encoding = 0x05
QSFP 52 Length(SFM) Km = 0x00
QSFP 52 Length(OM3) 2m = 0x32
QSFP 52 Length(OM2) 1m = 0x00
QSFP 52 Length(OM1) 1m = 0x00
QSFP 52 Length(Copper) 1m = 0x00
QSFP 52 Vendor Rev = 01
QSFP 52 Laser Wavelength = 850.00 nm
1162
Debugging and Diagnostics