ErrorFault Data for Router Environmental Characteristics
Error/Fault Data for Router Environmental CharacteristicsWe'll specifically look at the high-end routers, such as the 7x00 series, since that is where most, if not all the environmental characteristics are reported. Tables 10-6 through 10-13 summarize the environmental specifications (temperature and voltages) of each router type (7500 series and 7200 series). Subsequent sections look at the MIBs and data points to monitor for those values. The router also reports fan status messages, but we will not go into those messages specifically because you'll start to see a pattern in the voltages and temperature monitoring. You can apply the same methodology to the fan status.
MIB Variables for Voltages (Power Supply)From CISCO-ENVMON MIB, the following variables are relevant to voltages:
From these MIB objects, you can identify the state of the voltage settings on the router. It may not be necessary to constantly go poll these MIB objects, but to go poll only the objects when an SNMP trap is received. These three values are used as varbinds in the ciscoEnvMonVoltageNotification Trap message. After the trap is received, you may want to go out and poll the node for awhile, especially if it exceeds a threshold setting defined in Table 10-14. Table 10-14 summarizes the recommended baseline thresholds for voltage]
Related MIB objects from CISCO-ENVMON MIB are as follows:
CLI Commands for VoltagesThe following are show commands relating to environmental characteristics of a router. These values are comparable to the data points gathered from the MIB variables previously mentioned. Router Environment from show env allIf you include the keyword "all" at the end of the show env command, the output reported is what the voltages are currently measured at. The threshold settings are not displayed in this output. All environmental characteristics are updated every 60 seconds for CLI reporting. Example 10-15 focuses on the voltage readings from show env all output. Example 10-15 Obtaining router voltage information with show env all. Router# show env all Environmental Statistics Environmental status as of Wed 5-10-1995 19:10:41 Data is 31 second(s) old, refresh in 29 second(s) WARNING: Fan has reached CRITICAL level Power Supply: 1200W AC No Intermittent Powerfails +12 volts measured at 12.00(V) A +5 volts measured at 5.02(V) A -12 volts measured at -12.05(V) A +24 volts measured at 23.70(V) A Airflow temperature measured at 35 Inlet temperature measured at 26 Arbiter type 1, backplane type 7513 (id 2) Power supply #1 is 1200W AC (id 1), power supply #2 is removed (id 7) Active fault conditions: Blower #3 Fan speed is 50% Active trip points: none 15 of 15 soft shutdowns remaining before hard shutdown The router reports the current 4 DC voltages (A). The 7200 series uses different voltage data points, as indicated in Table 10-13. These values are updated every minute. Router Environment from show env tableThis command reports the threshold settings for the appropriate router's environmental characteristics. It reports the values seen in Table 10-14. The thresholds are categorized as either Warning or Critical. Example 10-16 focuses on the voltage readings available from show env table. Example 10-16 Obtaining router voltage readings with show env table. Router# show env table Sample Point LowCritical LowWarning HighWarning HighCritical RSP(2) Inlet 44C/111F 50C/122F RSP(2) Hotpoint 54C/129F 60C/140F RSP(2) Exhaust 101C/213F 101C/213C RSP(3) Inlet 44C/111F 50C/122F RSP(3) Hotpoint 54C/129F 60C/140F RSP(3) Exhaust 101C/213F 101C/213F +12 Voltage 10.90 11.61 12.82 13.38 A +5 Voltage 4.49 4.74 5.25 5.52 A -12 Voltage -10.15 -10.76 -13.25 -13.86 A +24 Voltage 19.06 21.51 26.51 28.87 A Shutdown boards at 101C/213F Shutdown power supplies at 101C/213F All the threshold settings are reported here, both Warning and Critical. Table 10-14 reports everything that exceeds the Warning level because an SNMP trap will be generated when the Warning threshold is exceeded. SNMP Traps for VoltagesFrom CISCO-ENVMON MIB, the ciscoEnvMonVoltageNotification trap is relevant to voltages. A ciscoEnvMonVoltageNotification is sent if the voltage measured at a given testpoint is outside the normal range for the testpoint (that is, at the Warning, Critical, or Shutdown stage). Because such a notification is usually generated before the Shutdown state is reached, it can convey more data and has a better chance of being sent than does the ciscoEnvMonShutdownNotification. The ciscoEnvMonVoltageStatusDescr, ciscoEnvMonVoltageStatusValue, and ciscoEnvMonVoltageState MIB variables are used as the varbinds or variables within this SNMP trap message. Syslog Messages for VoltagesSome of the environmental syslog messages may start with "ENV" or "ENVM," depending on the IOS running on the router or router platform. They are summarized in Table 10-15.
MIB Variables for TemperatureFrom CISCO-ENVMON MIB, the following variables are relevant to temperature:
The latter can have one of the following values: normal, Warning, Critical, Shutdown, or notPresent. From these MIB objects, you can identify the state of the temperature settings on the router. It may not be necessary to constantly go poll these MIB objects, but to only go poll the objects when an SNMP trap is received. These three values are used in the ciscoEnvMonTemperatureNotification Trap message as varbinds. After the trap is received, you may want to go out and poll the node for awhile, especially if it exceeds a threshold setting defined in Table 10-16. Table 10-16 summarizes the recommended baseline thresholds for temperature. Table 10-17 summarizes the temperatures that will cause the router to shut down.
Related MIB objects from CISCO-ENVMON are the following:
CLI Commands for TemperatureTwo show commands that provide data relating to temperature statistics are show env all and show env table. Router Temperature Information from show env allIf you use the keyword "all" at the end of the show env command, the output reported is what the temperatures are currently measured at. The threshold settings are not displayed in this output. All environmental characteristics are updated every 60 seconds for CLI reporting. Example 10-17 focuses on temperature data supplied by show env all. Example 10-17 Obtaining router temperature information with show env all. Router# show env all Environmental Statistics Environmental status as of Wed 5-10-1995 19:10:41 Data is 31 second(s) old, refresh in 29 second(s) WARNING: Fan has reached CRITICAL level Power Supply: 1200W AC No Intermittent Powerfails +12 volts measured at 12.00(V) +5 volts measured at 5.02(V) -12 volts measured at -12.05(V) +24 volts measured at 23.70(V) Airflow temperature measured at 35 A Inlet temperature measured at 26 A Arbiter type 1, backplane type 7513 (id 2) Power supply #1 is 1200W AC (id 1), power supply #2 is removed (id 7) Active fault conditions: Blower #3 Fan speed is 50% Active trip points: none 15 of 15 soft shutdowns remaining before hard shutdown The current Inlet and Airflow temperature (A) is reported in this output. If there is a fault in the temperature, you will see the fault here, just as you see a warning for the fan in the beginning of this sample output. Table 10-16 reports everything that exceeds the Warning level because an SNMP trap will be generated when the warning threshold is exceeded. Table 10-17 reports the temperature where the routers will shut down. Router Temperature Information from show env tableThis command reports the threshold settings for the appropriate router's environmental characteristics. It reports the values seen in Table 10-16 and Table 10-17. The thresholds are categorized as Warning, Critical, or Shutdown. Example 10-18 shows output from show env table, with emphasis on temperature values. Example 10-18 Obtaining router termperature information with show env table. Router# show env table Sample Point LowCritical LowWarning HighWarning HighCritical RSP(2) Inlet 44C/111F 50C/122F A RSP(2) Hotpoint 54C/129F 60C/140F A RSP(2) Exhaust 101C/213F 101C/213C A RSP(3) Inlet 44C/111F 50C/122F A RSP(3) Hotpoint 54C/129F 60C/140F A RSP(3) Exhaust 101C/213F 101C/213F A +12 Voltage 10.90 11.61 12.82 13.38 +5 Voltage 4.49 4.74 5.25 5.52 -12 Voltage -10.15 -10.76 -13.25 -13.86 +24 Voltage 19.06 21.51 26.51 28.87 Shutdown boards at 101C/213F B Shutdown power supplies at 101C/213F B Following are the annotated highlights of Example 10-18:
SNMP Traps for TemperatureFrom CISCO-ENVMON MIB, the ciscoEnvMonTemperatureNotification trap is relevant to temperature. This trap is sent if the temperature measured at a given testpoint is outside the normal range for the testpoint (that is, it is at the Warning, Critical, or Shutdown stage). Because such a notification is usually generated before the Shutdown state is reached, it can convey more data and has a better chance of being sent than does ciscoEnvMonShutdownNotification. The ciscoEnvMonTemperatureStatusDescr, ciscoEnvMonTemperatureStatusValue, and ciscoEnvMonTemperatureState MIB variables are used as the varbinds or variables within this SNMP trap message. Syslog Messages for TemperatureTable 10-18 summarizes the syslog messages related to temperature. Some of the environmental syslog messages may start with "ENV" or "ENVM," depending on the IOS running on the router or router platform.
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