Unisphere-Data-ADDRESS-POOL-MIB

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Organization: Unisphere Networks, Inc.

Last Updated: 2002-05-06

Category: Juniper Unisphere ERX Routing

Description: Manages Unisphere ERX IP address pool configuration, utilization, and dynamic assignment tracking.

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What Is Unisphere-Data-ADDRESS-POOL-MIB?

Unisphere-Data-ADDRESS-POOL-MIB is a Unisphere Networks (later Juniper ERX/E-series) enterprise MIB for managing IP address pools used in dynamic address assignment, such as for PPP/DHCP subscriber sessions on edge routers. It exposes a configuration and utilization category of data: pool definitions (name, start/end address range, size), current in-use count, and configurable high/abated utilization thresholds along with a computed utilization percentage. Its monitoring emphasis is on service-capacity/software status rather than hardware — it tells an operator whether an address pool is nearing exhaustion, which would prevent new subscriber sessions from being assigned an address, and it can drive trap notifications when utilization crosses configured thresholds. It has no notable external MIB dependency beyond the vendor's own Unisphere/ERX enterprise MIB tree and standard SNMPv2 table conventions. It is typically deployed on Unisphere/Juniper ERX edge routers used by broadband/dial access service providers to manage subscriber IP address allocation, and a Unisphere-Data-ADDRESS-POOL-MIB download from Juniper's legacy ERX MIB archive lets an operator load it into a MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in Unisphere-Data-ADDRESS-POOL-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

Unisphere/Juniper ERX edge router (broadband/dial access aggregation)

Monitoring Examples

An operator would poll the usdAddressPoolTable/usdAddressPoolEntry, keyed by usdAddressPoolIndex, checking usdAddressPoolInUse against usdAddressPoolSize (or the precomputed usdAddressPoolUtilPct) for a given usdAddressPoolName. A usdAddressPoolUtilPct climbing past the configured usdAddressPoolHighUtilThreshold would indicate the pool is nearing exhaustion and new subscriber sessions may soon fail to obtain an address, prompting a usdAddressPoolTraps notification and pool-size expansion, until utilization falls back below the usdAddressPoolAbatedUtilThreshold.

What Can Be Monitored

address pool utilization percentage
addresses in use vs pool size
high/abated utilization threshold crossings
address pool range/configuration

Imported Objects

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Integer32
IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

RowStatus
TruthValue

From Unisphere-Data-MIBs

usDataMibs

MODULE-IDENTITY

From Unisphere-Data-ROUTER-MIB

usdRouterName

OBJECT-TYPE

OIDs

OID symbolic	OID numeric	Type	Access	Description
usdAddressPoolMIB	1.3.6.1.4.1.4874.2.2.21			The Address Pool MIB for the Unisphere Networks enterprise.
usdAddressPoolObjects	1.3.6.1.4.1.4874.2.2.21.1
usdAddressPool	1.3.6.1.4.1.4874.2.2.21.1.1
usdAddressPoolTable	1.3.6.1.4.1.4874.2.2.21.1.1.1		not-accessible	A table of IP address pool configuration entries.
usdAddressPoolEntry	1.3.6.1.4.1.4874.2.2.21.1.1.1.1		not-accessible	An entry describing an IP address pool configuration.
I32 usdAddressPoolIndex	1.3.6.1.4.1.4874.2.2.21.1.1.1.1.1	Integer32	not-accessible	An arbitrary integer index that distinguishes this address pool.
ROW usdAddressPoolRowStatus	1.3.6.1.4.1.4874.2.2.21.1.1.1.1.2	RowStatus	read-create	Controls creation/deletion of address pools. Only value 'active' will be observed with GET. Only values 'createAndGo' and 'destroy' are supported for SET. Once created, entry content cannot be modified except by deleting and recreating an entry with the same index.
OCT usdAddressPoolName	1.3.6.1.4.1.4874.2.2.21.1.1.1.1.3	OCTET STRING	read-create	The name of this address pool. Represents textual information taken from the NVT ASCII graphics character set (codes 32 through 126).
IP usdAddressPoolStart	1.3.6.1.4.1.4874.2.2.21.1.1.1.1.4	IpAddress	read-create	The starting IP address for the range of addresses comprising this pool.
IP usdAddressPoolEnd	1.3.6.1.4.1.4874.2.2.21.1.1.1.1.5	IpAddress	read-create	The ending IP address for the range of addresses comprising this pool.
I32 usdAddressPoolSize	1.3.6.1.4.1.4874.2.2.21.1.1.1.1.6	Integer32	read-only	The number of addresses available in this pool.
I32 usdAddressPoolInUse	1.3.6.1.4.1.4874.2.2.21.1.1.1.1.7	Integer32	read-only	The number of addresses currently allocated from this pool.
I32 usdAddressPoolHighUtilThreshold	1.3.6.1.4.1.4874.2.2.21.1.1.1.1.8	Integer32	read-create	The value of address pool utilization, where if reached for the first time, will generate a high address pool utilization event to the management entity on this system. The value of this object must be greater than the value of usdAddressPoolAbatedUtilThreshold.
I32 usdAddressPoolAbatedUtilThreshold	1.3.6.1.4.1.4874.2.2.21.1.1.1.1.9	Integer32	read-create	The value of address pool utilization that is used to determine when to generate an abated address pool utilization event notification to the management entity on this system. The value of this object must be less than the value of the usdAddressPoolHighUtilThreshold. The abated address pool utilization event is sent once if the high address pool utilization threshold is reached and utilization falls to the value of this object.
INT usdAddressPoolUtilPct	1.3.6.1.4.1.4874.2.2.21.1.1.1.1.10	INTEGER	read-only	The current address utilization for this pool.
T/F usdAddressPoolTrapEnable	1.3.6.1.4.1.4874.2.2.21.1.1.1.1.11	TruthValue	read-create	The configuration setting for address pool notifications. Setting this object to enable(1) will enable the sending of usdAddressPool event notifications to the management entity on this device. Setting this object to false(2) will disable event notification reports.
I32 usdAddressPoolNextPoolIndex	1.3.6.1.4.1.4874.2.2.21.1.1.2	Integer32	read-only	Coordinate usdAddressPoolIndex value allocation for entries in usdAddressPoolTable. A GET of this object returns the next available usdAddressPoolIndex value to be used to create an entry in the associated usdAddressPoolTable; or zero, if no valid usdAddressPoolIndex is available. This object returns a value of zero when it is the lexicographic successor of a varbind presented in an SNMP GETNEXT or GETBULK request, for which circumstance it is assumed that a new index allocation is unintended. Successive GETs will return different values, thus avoiding collisions among cooperating management clients seeking to create table entries simultaneously.
usdAddressPoolProfileTable	1.3.6.1.4.1.4874.2.2.21.1.1.3		not-accessible	A table of IP address pool profile entries.
usdAddressPoolProfileEntry	1.3.6.1.4.1.4874.2.2.21.1.1.3.1		not-accessible	An IP address pool profile entry.
I32 usdAddressPoolProfileIndex	1.3.6.1.4.1.4874.2.2.21.1.1.3.1.1	Integer32	not-accessible	A monotonically increasing integer for the sole purpose of indexing entries within the named address pool.
ROW usdAddressPoolProfileRowStatus	1.3.6.1.4.1.4874.2.2.21.1.1.3.1.2	RowStatus	read-create	Controls creation/deletion of address pools. Only value 'active' will be observed with GET. Only values 'createAndGo' and 'destroy' are supported for SET. Once created, entry content cannot be modified except by deleting and recreating an entry with the same index.
IP usdAddressPoolProfileStart	1.3.6.1.4.1.4874.2.2.21.1.1.3.1.3	IpAddress	read-create	The starting IP address for the range of addresses comprising this pool.
IP usdAddressPoolProfileEnd	1.3.6.1.4.1.4874.2.2.21.1.1.3.1.4	IpAddress	read-create	The ending IP address for the range of addresses comprising this pool.
I32 usdAddressPoolProfileSize	1.3.6.1.4.1.4874.2.2.21.1.1.3.1.5	Integer32	read-only	The number of addresses available in this pool.
I32 usdAddressPoolProfileInUse	1.3.6.1.4.1.4874.2.2.21.1.1.3.1.6	Integer32	read-only	The number of addresses currently allocated from this pool.
usdAddressPoolTraps	1.3.6.1.4.1.4874.2.2.21.3
usdAddressPoolTrapPrefix	1.3.6.1.4.1.4874.2.2.21.3.0
NTF usdAddressPoolHighAddrUtil	1.3.6.1.4.1.4874.2.2.21.3.0.1			Reports address pool utilization has reached the configured high utilization threshold.
NTF usdAddressPoolAbatedAddrUtil	1.3.6.1.4.1.4874.2.2.21.3.0.2			Reports address pool utilization has fallen to the configured abated threshold level.
NTF usdAddressPoolNoAddresses	1.3.6.1.4.1.4874.2.2.21.3.0.3			Reports address pool has exhausted its supply of addresses. This trap is issued every time a request is made to allocate an address from a fully utilized pool.
usdAddressPoolMIBConformance	1.3.6.1.4.1.4874.2.2.21.4
usdAddressPoolMIBCompliances	1.3.6.1.4.1.4874.2.2.21.4.1
usdAddressPoolCompliance	1.3.6.1.4.1.4874.2.2.21.4.1.1			Obsolete compliance statement for systems providing local address pools. This statement became obsolete when pool exhaustion variables and notifications were added.
usdAddressPoolCompliance2	1.3.6.1.4.1.4874.2.2.21.4.1.2			Obsolete compliance statement for systems providing local address pools. This statement became obsolete when support was added for address pools with multiple address ranges.
usdAddressPoolCompliance3	1.3.6.1.4.1.4874.2.2.21.4.1.3			The compliance statement for systems providing local address pools.
usdAddressPoolMIBGroups	1.3.6.1.4.1.4874.2.2.21.4.2
usdAddressPoolGroup	1.3.6.1.4.1.4874.2.2.21.4.2.1			Obsolete collection of objects providing management of local address pools. This group became obsolete when pool exhaustion variables and notifications were added.
usdAddressPoolGroup2	1.3.6.1.4.1.4874.2.2.21.4.2.2			The basic collection of objects providing management of local address pools. This group was deprecated when support was added for address pools with multiple address ranges.
usdAddressPoolTrapGroup	1.3.6.1.4.1.4874.2.2.21.4.2.3			The notifications providing alarms for high pool utilization and pool exhaustion of local address pools.
usdAddressPoolGroup3	1.3.6.1.4.1.4874.2.2.21.4.2.4			The basic collection of objects providing management of local address pools.

RFC description

Vendor-private MIB for Juniper (Unisphere-Data) address pool management, defining configuration and statistics for IP address allocation on routers and gateways.

Start monitoring Unisphere/Juniper ERX edge router, broadband/dial access aggregation (IP-pool utilization/threshold 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.

Download Unisphere-Data-ADDRESS-POOL-MIB

What Is Unisphere-Data-ADDRESS-POOL-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description