CISCO-SNMP-NOTIFICATION-EXT-MIB

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Organization: Cisco Systems, Inc.

Last Updated: 2004-05-12

Category: Cisco Devices, SNMP Framework

Description: Extends SNMP notification management with Cisco-specific trap throttling, filtering, and destination controls.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

What Is CISCO-SNMP-NOTIFICATION-EXT-MIB?

CISCO-SNMP-NOTIFICATION-EXT-MIB is a Cisco enterprise MIB that extends the standard SNMP-NOTIFICATION-MIB by adding aging (timeout) behavior to notification filters, so that temporary filter entries can automatically expire. It exposes a table of notification filter timer settings including administrative timer value, operational (remaining) timer value, and the timer's time unit. Its monitoring value is in SNMP management-plane configuration state rather than device hardware: administrators check whether temporary trap filters are still active or have aged out, ensuring notification suppression rules behave as intended and don't silently persist longer than planned. It has an explicit, stated dependency on the IETF SNMP-NOTIFICATION-MIB, whose filter tables it augments. It is deployed on Cisco routers and switches wherever administrators use time-limited SNMP notification filtering during maintenance windows or troubleshooting, loading the CISCO-SNMP-NOTIFICATION-EXT-MIB MIB into their SNMP management tool to track filter timer state.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-SNMP-NOTIFICATION-EXT-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Cisco router
Cisco switch

Monitoring Examples

An administrator would walk csneSnmpNotifyFilterTable/csneSnmpNotifyFilterEntry to compare csneFilterAdminTimer (the configured duration) against csneFilterOperTimer (the remaining time) and csneFilterTimerUnit to see how soon a temporary notification filter will expire. A csneFilterOperTimer unexpectedly stuck at zero or not decrementing would indicate a filter that failed to age out as configured, potentially suppressing important traps longer than intended.

What Can Be Monitored

notification filter administrative timer
notification filter operational (remaining) timer
timer unit

Imported Objects

From CISCO-SMI

ciscoMgmt

OBJECT-IDENTITY

From SNMP-NOTIFICATION-MIB

snmpNotifyFilterEntry

OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

OIDs

OID symbolic	OID numeric	Type	Access	Description
ciscoSnmpNotificationExtMIB	1.3.6.1.4.1.9.9.408			This MIB extends the functionality provided by SNMP-NOTIFICATION-MIB. This MIB provides for the aging of the notification filters specified in the SNMP-NOTIFICATION-MIB.
csneMIBNotifs	1.3.6.1.4.1.9.9.408.0
csneMIBObjects	1.3.6.1.4.1.9.9.408.1
csneNotifyObjects	1.3.6.1.4.1.9.9.408.1.1
csneSnmpNotifyFilterTable	1.3.6.1.4.1.9.9.408.1.1.1		not-accessible	This table contains objects which are used to configure notification filtering parameters and an entry in this table will augment the corresponding base entry in snmpNotifyFilterTable. When the csneFilterAdminTimer defined in this table expires, the entire row from the snmpNotifyFilterTable and the csneNotifyFilterTable will be removed. Thus, the csneNotifyFilterTable will provide an 'aging' capability to the snmpNotifyFilterTable entries. The 'age' of an entry will be defined in the csneFilterAdminTimer object. The snmpNotifyFilterProfileStatus is an object in the snmpNotifyFilterProfileTable. The snmpNotifyFilterProfileTable also contains the snmpNotifyFilterProfileName that is used to index into the snmpNotifyFilterTable (and consequently the csneNotifyFilterTable). If, due to the aging mechanism, there are no entries in the snmpNotifyFilterTable with an index corresponding to a snmpNotifyFilterProfileName say abc, then the corresponding entry in the snmpNotifyFilterProfileTable for abc will have its row status, snmpNotifyFilterProfileRowStatus, changed to 'notReady'.
csneSnmpNotifyFilterEntry	1.3.6.1.4.1.9.9.408.1.1.1.1		not-accessible	This entry augments the entries in snmpNotifyFilterEntry.
U32 csneFilterAdminTimer	1.3.6.1.4.1.9.9.408.1.1.1.1.1	Unsigned32	read-create	This object specifies the time in units specified in csneFilterTimerUnit for which the notification specified in snmpNotifyFilterSubtree will remain active with the corresponding snmpNotifyFilterProfileName. If set to 0, it indicates that the corresponding snmpNotifyFilterSubtree will remain active forever. This value can be set when the snmpNotifyFilterRowStatus is active. If this is done, the csneFilterOperTimer will be refreshed to take the new value set in this object.
U32 csneFilterOperTimer	1.3.6.1.4.1.9.9.408.1.1.1.1.2	Unsigned32	read-only	This object specifies the time in units specified in csneFilterTimerUnit for which the notification specified in snmpNotifyFilterSubtree to remain active within the corresponding snmpNotifyFilterProfileName. When this value becomes 0, it indicates that the corresponding row in the snmpNotifyFilterTable has run through the time specified in csneFilterAdminTimer. This will cause the corresponding row to be deleted from the corresponding snmpNotifyFilterName. If snmpNotifyFilterRowStatus is notInService, then this object will not be decremented, i.e. the timer will not run. Once the snmpNotifyFilterRowStatus is transitioned to active, the timer will be refreshed with the value in csneFilterAdminTimer. Example: If a row indexed by snmpNotifyFilterProfileName abc and snmpNotifyFilterSubtree 1.2.3.1 is created for a csneFilterAdminTimer value of 10 units (as specified in csneFilterTimerUnit). Initially, the csneFilterAdminTimer and the csneFilterOperTimer will indicate 10 units. If the snmpNotifyFilterRowStatus is active, then the csneFilterOperTimer will start decrementing. Once the csneFilterOperTimer value reaches 0, it will cause the deletion of the row indexed by snmpNotifyFilterProfileName abc and snmpNotifyFilterSubtree 1.2.3.1. Now, if snmpNotifyFilterProfileName abc has no more active rows that it indexes, then, the snmpNotifyFilterProfileRowStatus for the snmpNotifyFilterProfileName of abc will be transitioned to notReady.
INT csneFilterTimerUnit	1.3.6.1.4.1.9.9.408.1.1.1.1.3	INTEGER	read-create	This object specifies the unit of time that is used for the csneFilterAdminTimer and csneFilerOperTimer objects.
csneMIBConform	1.3.6.1.4.1.9.9.408.2
csneMIBCompliances	1.3.6.1.4.1.9.9.408.2.1
csneMIBCompliance	1.3.6.1.4.1.9.9.408.2.1.1			The compliance statement for entities which implement the CISCO-SNMP-NOTIFICATION-EXT-MIB.
csneMIBGroups	1.3.6.1.4.1.9.9.408.2.2
csneNotifyFilterGroup	1.3.6.1.4.1.9.9.408.2.2.1			Extension objects to the snmpNotifyFilterTable.

RFC description

Extends SNMP notification filtering with aging capability to automatically remove filter entries after configurable timeout.

Start monitoring Cisco routers and switches (SNMP notification filters) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download CISCO-SNMP-NOTIFICATION-EXT-MIB

What Is CISCO-SNMP-NOTIFICATION-EXT-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description