RBN-DHCP-MIB

All MIBs › RBN-DHCP-MIB

Organization: Redback Networks, Inc.

Last Updated: 2010-03-10

Category: DHCP, Vendor: Ericsson

Description: Handles DHCP relay and server configuration along with lease statistics for subscriber contexts on Redback SmartEdge BRAS.

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What Is RBN-DHCP-MIB?

RBN-DHCP-MIB is a Redback Networks enterprise MIB (rbnMgmt 30) that instruments DHCP lease-pool thresholds on Redback SmartEdge BRAS platforms, at three granularities: per-interface (rbnDhcpIntfThresholdTable), per-subscriber-context (rbnDhcpCtxThreshold), and per-address-range/subnet (rbnDhcpRangeThresholdTable). Each level exposes lease size/available/in-use gauges plus configurable falling and rising thresholds (rbnDhcpIntfThresholdFallingThreshold/RisingThreshold) that can trigger a trap, a log message, or both when the pool of available leases crosses the configured watermark. A later revision adds rbnDhcpLeaseFileStorageSlot and rbnDhcpLeaseFileErrorType, covering failures of the on-device DHCP lease-file storage device itself. This makes the MIB useful for capacity planning and pool-exhaustion alerting on subscriber-facing DHCP services, and it is deployed alongside RBN-SMI/RBN-TC and the broader Redback SmartEdge management MIB tree, where administrators who need the object definitions can go to the RBN-DHCP-MIB download to load it into their SNMP tooling.

IPNetwork Monitor allows you to monitor SNMP objects defined in RBN-DHCP-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

Redback Networks SmartEdge BRAS / subscriber management platform

Monitoring Examples

An operator polls rbnDhcpRangeThresholdAvailable and rbnDhcpRangeThresholdInuse for a given subnet range to watch lease-pool exhaustion, relying on rbnDhcpRangeThresholdFallingThresholdMet notifications; a falling-threshold trap with available leases near zero indicates the DHCP range for that interface is about to run out of addresses to hand subscribers.

What Can Be Monitored

per-interface DHCP lease size/available/in-use gauges
per-context aggregate lease thresholds
per-subnet-range lease thresholds
falling/rising threshold trap and log-message flags
DHCP lease-file storage failure notifications

Imported Objects

From RBN-SMI

rbnMgmt

OBJECT-IDENTITY

From RBN-TC

RbnSlot

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
rbnDhcpMib	1.3.6.1.4.1.2352.2.30			Defines the objects necessary to obtain information about DHCP Servers for interfaces within a context.
rbnDhcpMIBNotifications	1.3.6.1.4.1.2352.2.30.0
NTF rbnDhcpIntfThresholdFallingThresholdMet	1.3.6.1.4.1.2352.2.30.0.1			A notification indicating that a per interface falling threshold has been reached.
NTF rbnDhcpIntfThresholdRisingThresholdMet	1.3.6.1.4.1.2352.2.30.0.2			A notification indicating that a per interface rising threshold has been reached.
NTF rbnDhcpCtxThresholdFallingThresholdMet	1.3.6.1.4.1.2352.2.30.0.3			A notification indicating that the per context falling threshold has been reached.
NTF rbnDhcpCtxThresholdRisingThresholdMet	1.3.6.1.4.1.2352.2.30.0.4			A notification indicating that the per context rising threshold has been reached.
NTF rbnDhcpRangeThresholdFallingThresholdMet	1.3.6.1.4.1.2352.2.30.0.5			A notification indicating that a per subnet falling threshold has been reached.
NTF rbnDhcpRangeThresholdRisingThresholdMet	1.3.6.1.4.1.2352.2.30.0.6			A notification indicating that a per subnet rising threshold has been reached.
NTF rbnDhcpLeaseFileFailure	1.3.6.1.4.1.2352.2.30.0.7			A notification indicating that the system has stopped reading/updating the DHCP lease file.
rbnDhcpMIBObjects	1.3.6.1.4.1.2352.2.30.1
rbnDhcpIntfThresholdTable	1.3.6.1.4.1.2352.2.30.1.1		not-accessible	The purpose of this table is to allow monitoring of per interface DHCP server thresholds through SNMP. This table contains the objects which characterize DHCP server thresholds. Each row in the table corresponds to information about the leases in a DHCP server range for a particular interface and the corresponding capacity, usage and falling and rising thresholds. Objects defined in this table are only accessible within the context identified in the SNMP protocol (i.e. the community string in v1/v2c or the contextName in v3).
rbnDhcpIntfThresholdEntry	1.3.6.1.4.1.2352.2.30.1.1.1		not-accessible	A conceptual row in the rbnDhcpIntfThresholdTable.
STR rbnDhcpIntfThresholdName	1.3.6.1.4.1.2352.2.30.1.1.1.1	SnmpAdminString	not-accessible	The name of the interface. An entry configured by other means may have been given a name whose length is greater than 80. Names which exceed this length are not accessible via SNMP operations.
STR rbnDhcpIntfThresholdContextName	1.3.6.1.4.1.2352.2.30.1.1.1.2	SnmpAdminString	read-only	The name of the context which contains the interface.
U32 rbnDhcpIntfThresholdSize	1.3.6.1.4.1.2352.2.30.1.1.1.3	Unsigned32	read-only	The number of leases that have been reserved for the DHCP server in this interface.
U32 rbnDhcpIntfThresholdAvailable	1.3.6.1.4.1.2352.2.30.1.1.1.4	Unsigned32	read-only	The number of leases that are available in this interface.
U32 rbnDhcpIntfThresholdInuse	1.3.6.1.4.1.2352.2.30.1.1.1.5	Unsigned32	read-only	The number of leases that are in use in this interface.
U32 rbnDhcpIntfThresholdFallingThreshold	1.3.6.1.4.1.2352.2.30.1.1.1.6	Unsigned32	read-only	The falling threshold is a value which specifies that any enabled falling threshold events are to be generated when the value of the currently available leases drops to the falling threshold value via an allocation of a lease from the pool. The number of available leases is reported in rbnDhcpIntfThresholdAvailable. A falling threshold event is either a notification or a log message or both. Falling threshold events are enabled if either or both of rbnDhcpIntfThresholdFallingSendTrap and rbnDhcpIntfThresholdFallingLogMessage are true. Note, this is a falling threshold, so a falling threshold event will only be triggered on a transition of the value of rbnDhcpIntfThresholdAvailable dropping from (rbnDhcpIntfThresholdFallingThreshold+1) to rbnDhcpIntfThresholdFallingThreshold.
T/F rbnDhcpIntfThresholdFallingSendTrap	1.3.6.1.4.1.2352.2.30.1.1.1.7	TruthValue	read-only	If true, upon detection of reaching a falling threshold, a trap will be sent. See the definition of the rbnDhcpIntfThresholdFallingThresholdMet notification for the information included in the trap.
T/F rbnDhcpIntfThresholdFallingLogMessage	1.3.6.1.4.1.2352.2.30.1.1.1.8	TruthValue	read-only	If true, upon detection of reaching a falling threshold, a message will be logged. See the definition of the rbnDhcpIntfThresholdFallingThresholdMet notification for the information included in the trap.
U32 rbnDhcpIntfThresholdRisingThreshold	1.3.6.1.4.1.2352.2.30.1.1.1.9	Unsigned32	read-only	The rising threshold is a value which specifies that any enabled rising threshold events are to be generated when the value of the currently available leases reaches the rising threshold value via a returning of a lease to the pool. The number of available leases is reported in rbnDhcpIntfThresholdAvailable. A rising threshold event is either a notification or a log message or both. Rising threshold events are enabled if either or both of rbnDhcpIntfThresholdRisingSendTrap and rbnDhcpIntfThresholdRisingLogMessage are true. Note, this is a rising threshold, so a rising threshold event will only be triggered on a transition of the value of rbnDhcpIntfThresholdAvailable increasing from (rbnDhcpIntfThresholdRisingThreshold-1) to rbnDhcpIntfThresholdRisingThreshold.
T/F rbnDhcpIntfThresholdRisingSendTrap	1.3.6.1.4.1.2352.2.30.1.1.1.10	TruthValue	read-only	If true, upon detection of reaching a rising threshold, a trap will be sent. See the definition of the rbnDhcpIntfThresholdRisingThresholdMet notification for the information included in the trap.
T/F rbnDhcpIntfThresholdRisingLogMessage	1.3.6.1.4.1.2352.2.30.1.1.1.11	TruthValue	read-only	If true, upon detection of reaching a rising threshold, a message will be logged. See the definition of the rbnDhcpIntfThresholdRisingThresholdMet notification for the information included in the trap.
rbnDhcpCtxThreshold	1.3.6.1.4.1.2352.2.30.1.2
STR rbnDhcpCtxThresholdName	1.3.6.1.4.1.2352.2.30.1.2.1	SnmpAdminString	accessible-for-notify	This object identifies the context in which a falling or rising per context threshold event occurs
U32 rbnDhcpCtxThresholdSize	1.3.6.1.4.1.2352.2.30.1.2.2	Unsigned32	read-only	The total number of leases in all DHCP ranges of all interfaces in the context valid in the current view.
U32 rbnDhcpCtxThresholdAvailable	1.3.6.1.4.1.2352.2.30.1.2.3	Unsigned32	read-only	The total number of leases available in all DHCP ranges of all interfaces in the context valid in the current view.
U32 rbnDhcpCtxThresholdInuse	1.3.6.1.4.1.2352.2.30.1.2.4	Unsigned32	read-only	The total number of leases in use in all DHCP ranges of all interfaces in the context valid in the current view.
U32 rbnDhcpCtxThresholdFallingThreshold	1.3.6.1.4.1.2352.2.30.1.2.5	Unsigned32	read-only	The falling threshold value for the context valid in the current view. Just as rbnDhcpIntfThresholdFallingThreshold is the per interface falling threshold, this object is the per context falling threshold. When the sum of the all available DHCP leases in all interfaces of the context valid in the current view reaches the value of this object a falling threshold action of a trap, a log message, or both will be generated. This is a falling threshold, so the evaluation of whether to perform the action occurs upon allocation of a lease from the available pool of leases from any interface within the context. The action of whether to send a trap and/or log message is specified by the values of rbnDhcpCtxThresholdFallingSendTrap and rbnDhcpCtxThresholdFallingLogMessage. If there is no per context rising threshold, the value of this object will be zero and the values of rbnDhcpCtxThresholdFallingSendTrap and rbnDhcpCtxThresholdFallingLogMessage will be false.
T/F rbnDhcpCtxThresholdFallingSendTrap	1.3.6.1.4.1.2352.2.30.1.2.6	TruthValue	read-only	If true, upon detection of reaching the per context falling threshold, a trap will be sent. See the definition of the rbnDhcpCtxThresholdFallingThresholdMet for the information included in the trap.
T/F rbnDhcpCtxThresholdFallingLogMessage	1.3.6.1.4.1.2352.2.30.1.2.7	TruthValue	read-only	If true, upon detection of reaching the per context falling threshold, a message will be logged. The information contained in the message logged is the same as that included in the rbnDhcpCtxThresholdFallingThresholdMet trap.
U32 rbnDhcpCtxThresholdRisingThreshold	1.3.6.1.4.1.2352.2.30.1.2.8	Unsigned32	read-only	The rising threshold value for the context valid in the current view. Just as rbnDhcpIntfThresholdRisingThreshold is the per interface rising threshold, this object is the per context rising threshold. When the sum of the all available DHCP leases in all interfaces of the context valid in the current view reaches the value of this object a rising threshold action of a trap, a log message, or both will be generated. This is a rising threshold, so the evaluation of whether to perform the action occurs upon return of a lease to the available pool of leases defined in any interface within the context. The action of whether to send a trap and/or log message is specified by the values of rbnDhcpCtxThresholdRisingSendTrap and rbnDhcpCtxThresholdRisingLogMessage. If there is no per context rising threshold, the value of this object will be zero and the values of rbnDhcpCtxThresholdRisingSendTrap and rbnDhcpCtxThresholdRisingLogMessage will be false.
T/F rbnDhcpCtxThresholdRisingSendTrap	1.3.6.1.4.1.2352.2.30.1.2.9	TruthValue	read-only	If true, upon detection of reaching the per context rising threshold, a trap will be sent. See the definition of the rbnDhcpCtxThresholdRisingThresholdMet for the information included in the trap.
T/F rbnDhcpCtxThresholdRisingLogMessage	1.3.6.1.4.1.2352.2.30.1.2.10	TruthValue	read-only	If true, upon detection of reaching the per context rising threshold, a message will be logged. The information contained in the message logged is the same as that included in the rbnDhcpCtxThresholdRisingThresholdMet trap.
rbnDhcpRangeThresholdTable	1.3.6.1.4.1.2352.2.30.1.3		not-accessible	The purpose of this table is to allow monitoring of DHCP server ranges within interfaces. This table contains the objects which characterize DHCP server ranges. Each row in the table corresponds to information about the leases in a DHCP server for a particular range within a particular interface and the corresponding capacity, usage and falling and rising thresholds. Objects defined in this table are only accessible within the context identified in the SNMP protocol (i.e. the community string in v1/v2c or the contextName in v3).
rbnDhcpRangeThresholdEntry	1.3.6.1.4.1.2352.2.30.1.3.1		not-accessible	A conceptual row in the rbnDhcpRangeThresholdTable.
U32 rbnDhcpRangeThresholdInterfaceIdx	1.3.6.1.4.1.2352.2.30.1.3.1.1	Unsigned32	not-accessible	The index of the interface containing the DHCP range.
IP rbnDhcpRangeThresholdAddr	1.3.6.1.4.1.2352.2.30.1.3.1.2	IpAddress	not-accessible	The start address of the DHCP range.
IP rbnDhcpRangeThresholdEndAddr	1.3.6.1.4.1.2352.2.30.1.3.1.3	IpAddress	read-only	The end address of the DHCP range.
STR rbnDhcpRangeThresholdContextName	1.3.6.1.4.1.2352.2.30.1.3.1.4	SnmpAdminString	read-only	The name of the context which contains the interface.
STR rbnDhcpRangeThresholdInterfaceName	1.3.6.1.4.1.2352.2.30.1.3.1.5	SnmpAdminString	read-only	The name of the interface containing the DHCP range.
U32 rbnDhcpRangeThresholdSize	1.3.6.1.4.1.2352.2.30.1.3.1.6	Unsigned32	read-only	The number of leases that have been reserved for the DHCP server in this range.
U32 rbnDhcpRangeThresholdAvailable	1.3.6.1.4.1.2352.2.30.1.3.1.7	Unsigned32	read-only	The number of leases that are available in this range.
U32 rbnDhcpRangeThresholdInuse	1.3.6.1.4.1.2352.2.30.1.3.1.8	Unsigned32	read-only	The number of leases that are in use in this range.
U32 rbnDhcpRangeThresholdFallingThreshold	1.3.6.1.4.1.2352.2.30.1.3.1.9	Unsigned32	read-only	The falling threshold is a value which specifies that any enabled falling threshold events are to be generated when the value of the currently available leases drops to the falling threshold value via an allocation of a lease from the range. The number of available leases is reported in rbnDhcpRangeThresholdAvailable. A falling threshold event is either a notification or a log message or both. Falling threshold events are enabled if either or both of rbnDhcpRangeThresholdFallingSendTrap and rbnDhcpRangeThresholdFallingLogMessage are true. Note, this is a falling threshold, so a falling threshold event will only be triggered on a transition of the value of rbnDhcpRangeThresholdAvailable dropping from (rbnDhcpRangeThresholdFallingThreshold+1) to rbnDhcpRangeThresholdFallingThreshold.
T/F rbnDhcpRangeThresholdFallingSendTrap	1.3.6.1.4.1.2352.2.30.1.3.1.10	TruthValue	read-only	If true, upon detection of reaching a falling threshold, a trap will be sent. See the definition of the rbnDhcpRangeThresholdFallingThresholdMet notification for the information included in the trap.
T/F rbnDhcpRangeThresholdFallingLogMessage	1.3.6.1.4.1.2352.2.30.1.3.1.11	TruthValue	read-only	If true, upon detection of reaching a falling threshold, a message will be logged. See the definition of the rbnDhcpRangeThresholdFallingThresholdMet notification for the information included in the trap.
U32 rbnDhcpRangeThresholdRisingThreshold	1.3.6.1.4.1.2352.2.30.1.3.1.12	Unsigned32	read-only	The rising threshold is a value which specifies that any enabled rising threshold events are to be generated when the value of the currently available leases reaches the rising threshold value via a returning of a lease to the range. The number of available leases is reported in rbnDhcpRangeThresholdAvailable. A rising threshold event is either a notification or a log message or both. Rising threshold events are enabled if either or both of rbnDhcpRangeThresholdRisingSendTrap and rbnDhcpRangeThresholdRisingLogMessage are true. Note, this is a rising threshold, so a rising threshold event will only be triggered on a transition of the value of rbnDhcpRangeThresholdAvailable increasing from (rbnDhcpRangeThresholdRisingThreshold-1) to rbnDhcpRangeThresholdRisingThreshold.
T/F rbnDhcpRangeThresholdRisingSendTrap	1.3.6.1.4.1.2352.2.30.1.3.1.13	TruthValue	read-only	If true, upon detection of reaching a rising threshold, a trap will be sent. See the definition of the rbnDhcpRangeThresholdRisingThresholdMet notification for the information included in the trap.
T/F rbnDhcpRangeThresholdRisingLogMessage	1.3.6.1.4.1.2352.2.30.1.3.1.14	TruthValue	read-only	If true, upon detection of reaching a rising threshold, a message will be logged. See the definition of the rbnDhcpRangeThresholdRisingThresholdMet notification for the information included in the trap.
RBN rbnDhcpLeaseFileStorageSlot	1.3.6.1.4.1.2352.2.30.1.4	RbnSlot	accessible-for-notify	The slot number of the storage device containing the DHCP lease file.
INT rbnDhcpLeaseFileErrorType	1.3.6.1.4.1.2352.2.30.1.5	INTEGER	accessible-for-notify	Error types of DHCP lease file failure.
rbnDhcpMIBConformance	1.3.6.1.4.1.2352.2.30.2
rbnDhcpCompliances	1.3.6.1.4.1.2352.2.30.2.1
rbnDhcpThresholdCompliance	1.3.6.1.4.1.2352.2.30.2.1.1			The compliance statement for threshold objects in the Redback DHCP MIB.
rbnDhcpThresholdCompliance2	1.3.6.1.4.1.2352.2.30.2.1.2			The compliance statement for threshold objects in the Redback DHCP MIB.
rbnDhcpThresholdCompliance3	1.3.6.1.4.1.2352.2.30.2.1.3			The compliance statement for threshold objects in the Redback DHCP MIB.
rbnDhcpGroups	1.3.6.1.4.1.2352.2.30.2.2
rbnDhcpThresholdGroup	1.3.6.1.4.1.2352.2.30.2.2.1			The collection of objects providing DHCP range information.
rbnDhcpThresholdNotifyGroup	1.3.6.1.4.1.2352.2.30.2.2.2			The collection of notifications related to a DHCP range.
rbnDhcpIntfThresholdGroup	1.3.6.1.4.1.2352.2.30.2.2.3			The collection of objects providing DHCP range information.
rbnDhcpCtxThresholdGroup	1.3.6.1.4.1.2352.2.30.2.2.4			The collection of objects providing DHCP range information.
rbnDhcpRangeThresholdGroup	1.3.6.1.4.1.2352.2.30.2.2.5			The collection of objects providing DHCP range information.
rbnDhcpIntfThresholdNotifyGroup	1.3.6.1.4.1.2352.2.30.2.2.6			The collection of notifications related to a DHCP range.
rbnDhcpCtxThresholdNotifyGroup	1.3.6.1.4.1.2352.2.30.2.2.7			The collection of notifications related to a DHCP range.
rbnDhcpRangeThresholdNotifyGroup	1.3.6.1.4.1.2352.2.30.2.2.8			The collection of notifications related to a DHCP range.
rbnDhcpLeaseFileFailureTrapGroup	1.3.6.1.4.1.2352.2.30.2.2.9			The collection of objects related to DHCP lease file failures.
rbnDhcpLeaseFileFailureNotifyGroup	1.3.6.1.4.1.2352.2.30.2.2.10			The collection of notifications related to DHCP lease file failures.

RFC description

Manages DHCP relay and server configuration and lease statistics for subscriber contexts on Redback SmartEdge BRAS.

Start monitoring Redback Networks SmartEdge BRAS router (DHCP lease-pool threshold monitoring) 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 RBN-DHCP-MIB

What Is RBN-DHCP-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description