Specifications

328 ExtremeWare XOS 11.0 Concepts Guide
Troubleshooting
System Health Check
There are two modes of health checking available on the switch: polling and backplane diagnostic
packets. These methods are briefly described in the following:
• Polling is always enabled on the system and occurs every 60 seconds by default. The system health
checker polls and tracks the ASIC counters that collect correctable and uncorrectable packet memory
errors, check sum errors, and parity errors on a per ASIC basis. By reading and processing the
registers, the system health check detects and associates faults to specific system ASICs.
• Backplane diagnostic packets are disabled by default. Once this feature is enabled, the system health
checker tests the packet path for a specific I/O module every 6 seconds by default. The Management
Switch Fabric Module (MSM) sends and receives diagnostic packets from the I/O module to
determine the state and connectivity. (The other I/O modules with backplane diagnostic packets
disabled continue polling every 60 seconds by default.)
System health check errors are reported to the syslog. If you see an error, please contact Extreme
Networks Technical Support.
For more detailed information about the system health checker, including a configuration example, see
Chapter 9, “Status Monitoring and Statistics.”
Enabling and Disabling Backplane Diagnostic Packets on the Switch
To enable backplane diagnostic packets, use the following command:
enable sys-health-check slot <slot>
By default, the system health checker tests the packet path every 6 seconds for the specified slot.
NOTE
Enabling backplane diagnostic packets increases CPU utilization and competes with network traffic for
resources.
To disable backplane diagnostic packets, use the following command:
disable sys-health-check slot <slot>
By default, the system health checker discontinues sending backplane diagnostic packets and returns
the polling frequency to 60 seconds on the specified slot. Only polling is enabled.
Configuring Backplane Diagnostic Packets on the Switch
To configure the frequency of sending backplane diagnostic packets, use the following command:
configure sys-health-check interval <interval>
NOTE
Extreme Networks does not recommend configuring an interval of less than 6 seconds. Doing so can
cause excessive CPU utilization.