Brocade Communications Systems S3-1002483-03 manual

5 Monitoring the status of an I2C failure on a management module

At the first occurrence of an I2C failure in the system, the Global I2C Error Indicator (GIEI) flag is set. The GIEI severity is set to major on the first occurrence of an error detection. The GIEI flag is cleared only if the management module is able to access the same exact physical device successfully. The GIEI severity flag is set to minor only if other I2C devices are accessible. A set of static and dynamic syslog messages are generated when any one or all of the following events occurs:

•When an I2C failure is first detected

•When the GIEI severity is changed from major to minor

•When the GIEI flag is cleared

The Syslog messages are generated in both the static and dynamic sections of the show logging command output. A syslog message is also sent to the SNMP log server.

When the GIEI set to major, the first syslog is displayed as an Alert syslog message. The following example displays an Alert syslog message when the GIEI is set to major:

BigIron RX# show logging

Sysloglogging: enabled (0 messages dropped, 0 flushes, 1 overruns)

Buffer logging: level ACDMEINW, 50 messages logged

level code: A=alert C=critical D=debugging M=emergency E=error I=informational N=notification W=warning

Static Log Buffer:

Apr 16 18:21:25:A:System: Power Supply 2 , middle, Not Installed (FAILED)

Apr 16 18:21:25:A:System: Power Supply 3 , top, Not Installed (FAILED)

Apr 16 18:21:25:A:System: bad i2c access (GIEI = set), Severity Major, Mux index 0, Muxtap 4, ID 0x4, Addr0x5, (FANTRAY4)

Apr 16 18:21:25:I:System: last good i2c access, Muxindex 0, Muxtap 1, ID 0x9, Addr0x1, (SNM1TEMP)

Dynamic Log Buffer (50 lines):

Apr 16 18:21:25:A:System: bad i2c access (GIEI = set), Severity Major, Mux index 0, Mux tap 4, ID 0x4, Addr 0x5, (FANTRAY4)

Apr 16 18:21:25:I:System: last good i2c access, Mux index 0, Mux tap 1, ID 0x9, Addr 0x1, (SNM1TEMP)

Mar 28 12:36:47:A:System: Set fan speed to MED (75%)

Mar 25 21:40:47:A:System: Set fan speed to MED-HI (90%)

The syslog message contains the following information about the failed device, and last successful I2C access by the management module:

•Current state of the GIEI flag

•Severity of the failure: major or minor

•MUX index number:

-0-1, there are total of 2 MUX indexes in the BigIron RX chassis

-MUX index is always zero for the BigIron RX-4, BigIron RX-8, and BigIron RX-16 chassis

•MUX tap number:

-0-7, there are a total of 8 MUX taps per index

-15: MUX tap is non applicable

•Device ID

•Device address

•Description of the load

102	Brocade BigIron RX Series Hardware Installation Guide
	53-1002483-03