Cuando los dispositivos contienen fuentes de alimentación redundantes, puede elegir que el dispositivo genere desvíos cuando una de las fuentes de alimentación deje de funcionar o cambie de estado. Existen desvíos tanto en los routers como en los switches, y notifican un cambio de estado o un fallo, y apuntan a más información sobre la naturaleza del cambio. Este documento explica cómo hacer un seguimiento cuando una de las fuentes de alimentación redundantes deja de funcionar o cambia de estado usando el Simple Network Management Protocol (SNMP).
No hay requisitos específicos para este documento.
La información de este documento es válida para los routers y switches de Cisco que tienen fuentes de alimentación redundantes.
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.
For more information on document conventions, refer to the Cisco Technical Tips Conventions.
Para los routers, observe la trampa ciscoEnvMonRedundantSupplyNotification de la CISCO-ENVMON-MIB. Las variables ciscoEnvMonSupplyDescr y ciscoEnvMonSupplyState proporcionan detalles sobre la naturaleza del cambio. Debe configurar el comando snmp-server enable traps envmon para habilitar las trampas.
.1.3.6.1.4.1.9.9.13.3.0.5 ciscoEnvMonRedundantSupplyNotification OBJECT-TYPE -- FROM CISCO-ENVMON-MIB TRAP VARBINDS { ciscoEnvMonSupplyStatusDescr, ciscoEnvMonSupplyState } DESCRIPTION "A ciscoEnvMonRedundantSupplyNotification is sent if the redundant power supply (where extant) fails. Since 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." ::= { iso(1) org(3) dod(6) internet(1) private(4) enterprises(1) cisco(9) ciscoMgmt(9) ciscoEnvMonMIB(13) ciscoEnvMonMIBNotificationPrefix(3)ciscoEnvMonMIBNotifications(0) 5 } .1.3.6.1.4.1.9.9.13.1.5.1.2 ciscoEnvMonSupplyStatusDescr OBJECT-TYPE -- FROM CISCO-ENVMON-MIB -- TEXTUAL CONVENTION DisplayString SYNTAX OCTET STRING (0..32) DISPLAY-HINT "255a" MAX-ACCESS read-only STATUS Current DESCRIPTION "Textual description of the power supply being instrumented. This description is a short textual label, suitable as a human-sensible identification for the rest of the information in the entry." ::= { ISO(1) org(3) DOD(6) Internet(1) private(4) enterprises(1) cisco(9) ciscoMgmt(9) ciscoEnvMonMIB(13) ciscoEnvMonObjects(1) ciscoEnvMonSupplyStatusTable(5) ciscoEnvMonSupplyStatusEntry(1) 2 } .1.3.6.1.4.1.9.9.13.1.5.1.3 ciscoEnvMonSupplyState OBJECT-TYPE -- FROM CISCO-ENVMON-MIB -- TEXTUAL CONVENTION CiscoEnvMonState SYNTAX Integer { normal(1), warning(2), critical(3), shutdown(4), notPresent(5) } MAX-ACCESS read-only STATUS Current DESCRIPTION "The current state of the power supply being instrumented." ::= { ISO(1) org(3) DOD(6) Internet(1) private(4) enterprises(1) cisco(9) ciscoMgmt(9) ciscoEnvMonMIB(13) ciscoEnvMonObjects(1) ciscoEnvMonSupplyStatusTable(5) ciscoEnvMonSupplyStatusEntry(1) 3 }
Para los switches, observe el chasis de trampa SNMPAlarmOn. Las variables chassisTempAlarm, chassisMinorAlarm y chassisMajorAlarm se incluyen con la trampa y son necesarias para determinar la alarma específica del chasis en curso. Todas estas trampas son de CISCO-STACK-MIB.
.1.3.6.1.4.1.9.5.0.5 chassisAlarmOn OBJECT-TYPE -- FROM CISCO-STACK-MIB TRAP VARBINDS { chassisTempAlarm, chassisMinorAlarm, chassisMajorAlarm } DESCRIPTION "A chassisAlarmOn trap signifies that the agent entity has detected the chassisTempAlarm, chassisMinorAlarm, or chassisMajorAlarm object in this MIB has transitioned to the on(2) state. The generation of this trap can be controlled by the sysEnableChassisTraps object in this MIB." ::= { ISO(1) org(3) DOD(6) Internet(1) private(4) enterprises(1) cisco(9) workgroup(5) ciscoStackNotificationsPrefix(0) 5 } .1.3.6.1.4.1.9.5.1.2.13 chassisTempAlarm OBJECT-TYPE -- FROM CISCO-STACK-MIB SYNTAX Integer { off(1), on(2), critical(3) } MAX-ACCESS read-only STATUS Current DESCRIPTION "The chassis temperature alarm status." ::= { ISO(1) org(3) DOD(6) Internet(1) private(4) enterprises(1) cisco(9) workgroup(5) ciscoStackMIB(1) chassisGrp(2) 13 } .1.3.6.1.4.1.9.5.1.2.11 chassisMinorAlarm OBJECT-TYPE -- FROM CISCO-STACK-MIB SYNTAX Integer { off(1), on(2) } MAX-ACCESS read-only STATUS Current DESCRIPTION "The chassis minor alarm status." ::= { ISO(1) org(3) DOD(6) Internet(1) private(4) enterprises(1) cisco(9) workgroup(5) ciscoStackMIB(1) chassisGrp(2) 11 } .1.3.6.1.4.1.9.5.1.2.12 chassisMajorAlarm OBJECT-TYPE -- FROM CISCO-STACK-MIB SYNTAX Integer { off(1), on(2) } MAX-ACCESS read-only STATUS Current DESCRIPTION "The chassis major alarm status." ::= { ISO(1) org(3) DOD(6) Internet(1) private(4) enterprises(1) cisco(9) workgroup(5) ciscoStackMIB(1) chassisGrp(2) 12 }