IB-DHCPONE-MIB

All MIBs › IB-DHCPONE-MIB

Organization: Infoblox

Last Updated: 2010-03-23

Category: Protocol: DHCP, Vendor: Infoblox

Description: Infoblox MIB for monitoring and managing DHCP services on Infoblox DNS/DHCP/IPAM (DDI) appliances.

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What Is IB-DHCPONE-MIB?

IB-DHCPONE-MIB is an Infoblox-specific module for the DHCP One service running on Infoblox DDI (DNS/DHCP/IPAM) grid appliances, covering DHCP subnet configuration and service-level statistics. It exposes an ibDHCPSubnetTable describing each configured subnet's network address, mask, and utilization percentage, alongside aggregate DHCP protocol counters for the whole appliance. Its principal monitoring value is software/service health rather than physical hardware: ibDHCPSubnetPercentUsed flags address pool exhaustion risk, while the discover/request/release/offer/ack/nack counters (ibDhcpTotalNoOfDiscovers, ibDhcpTotalNoOfRequests, etc.) reveal whether the DHCP service is processing lease traffic normally or showing signs of failure such as a spike in NACKs. It also tracks DDNS statistics, reflecting the health of the dynamic DNS update integration tied to DHCP leases. This MIB has an implicit dependency on the broader Infoblox enterprise MIB tree and is deployed specifically on Infoblox NIOS-based DDI appliances providing centralized DHCP services. Network engineers evaluating or troubleshooting this functionality can download the IB-DHCPONE-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in IB-DHCPONE-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

Infoblox DDI (DNS/DHCP/IPAM) appliance

Monitoring Examples

An admin would poll ibDHCPSubnetTable/ibDHCPSubnetEntry to read ibDHCPSubnetNetworkAddress, ibDHCPSubnetNetworkMask, and ibDHCPSubnetPercentUsed for each subnet, catching a subnet approaching 100% utilization before new leases start failing. Watching ibDhcpTotalNoOfNacks rise relative to ibDhcpTotalNoOfRequests would indicate clients being rejected, perhaps due to pool exhaustion or misconfiguration, while a drop in ibDhcpTotalNoOfAcks versus ibDhcpTotalNoOfOffers could reveal clients failing to complete the DORA handshake. ibDHCPDDNSStats would be checked to confirm dynamic DNS updates are keeping pace with new leases.

What Can Be Monitored

per-subnet address pool utilization
DHCP discover/request/release counts
DHCP offer/ack/nack counts
DDNS update statistics

Imported Objects

From IB-SMI-MIB

IbIpAddr
IbString
ibDHCPOne	OBJECT-IDENTITY

From RFC1155-SMI

Counter

From SNMPv2-SMI

Counter64
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32
enterprises

From SNMPv2-TC

TEXTUAL-CONVENTION

How to Use in IPNetwork Monitor

Example using ibDhcpTotalNoOfDiscovers OID:

Select an Infoblox DDI (DNS/DHCP/IPAM) appliance (DHCP One service) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type ibDhcpTotalNoOfDiscovers into the Find box to locate it in the OID tree, then select it and click OK. This variable indicates the number of discovery messages received. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
ibDhcpModule	1.3.6.1.4.1.7779.3.1.1.4.1			This file defines the Infoblox DHCP One MIB.
ibDHCPSubnetTable	1.3.6.1.4.1.7779.3.1.1.4.1.1		not-accessible	A table of DHCP Subnet statistics.
ibDHCPSubnetEntry	1.3.6.1.4.1.7779.3.1.1.4.1.1.1		not-accessible	A conceptual row of the ibDHCPSubnetEntry containing info about a particular network using DHCP.
IBI ibDHCPSubnetNetworkAddress	1.3.6.1.4.1.7779.3.1.1.4.1.1.1.1	IbIpAddr	read-only	DHCP Subnet in IpAddress format. A subnetwork may have many ranges for lease.
IBI ibDHCPSubnetNetworkMask	1.3.6.1.4.1.7779.3.1.1.4.1.1.1.2	IbIpAddr	read-only	DHCP Subnet mask in IpAddress format.
INT ibDHCPSubnetPercentUsed	1.3.6.1.4.1.7779.3.1.1.4.1.1.1.3	INTEGER	read-only	Percentage of dynamic DHCP address for subnet leased out at this time. Fixed addresses are always counted as leased for this calcuation if the fixed addresses are within ranges of leases.
ibDHCPStatistics	1.3.6.1.4.1.7779.3.1.1.4.1.3
CTR ibDhcpTotalNoOfDiscoversEx	1.3.6.1.4.1.7779.3.1.1.4.1.3.1	Counter	read-only	This variable indicates the number of discovery messages received
CTR ibDhcpTotalNoOfRequests	1.3.6.1.4.1.7779.3.1.1.4.1.3.2	Counter	read-only	This variable indicates the number of requests received
CTR ibDhcpTotalNoOfReleases	1.3.6.1.4.1.7779.3.1.1.4.1.3.3	Counter	read-only	This variable indicates the number of releases received
CTR ibDhcpTotalNoOfOffers	1.3.6.1.4.1.7779.3.1.1.4.1.3.4	Counter	read-only	This variable indicates the number of offers sent
CTR ibDhcpTotalNoOfAcks	1.3.6.1.4.1.7779.3.1.1.4.1.3.5	Counter	read-only	This variable indicates the number of acks sent
CTR ibDhcpTotalNoOfNacks	1.3.6.1.4.1.7779.3.1.1.4.1.3.6	Counter	read-only	This variable indicates the number of nacks sent
CTR ibDhcpTotalNoOfDeclines	1.3.6.1.4.1.7779.3.1.1.4.1.3.7	Counter	read-only	This variable indicates the number of declines received
CTR ibDhcpTotalNoOfInforms	1.3.6.1.4.1.7779.3.1.1.4.1.3.8	Counter	read-only	This variable indicates the number of informs received
CTR ibDhcpTotalNoOfOthers	1.3.6.1.4.1.7779.3.1.1.4.1.3.9	Counter	read-only	This variable indicates the number of other messages received
INT ibDhcpDeferredQueueSize	1.3.6.1.4.1.7779.3.1.1.4.1.4	INTEGER	read-only	The size of deferred dynamic DNS update queue
ibDHCPDDNSStats	1.3.6.1.4.1.7779.3.1.1.4.1.5
C64 ibDHCPDDNSAvgLatency5	1.3.6.1.4.1.7779.3.1.1.4.1.5.1	Counter64	read-only	Average Latencies (in microseconds) for DHCPD dynamic DNS updates during the last 5 minutes
C64 ibDHCPDDNSAvgLatency15	1.3.6.1.4.1.7779.3.1.1.4.1.5.2	Counter64	read-only	Average Latencies (in microseconds) for DHCPD dynamic DNS updates during the last 15 minutes
C64 ibDHCPDDNSAvgLatency60	1.3.6.1.4.1.7779.3.1.1.4.1.5.3	Counter64	read-only	Average Latencies (in microseconds) for DHCPD dynamic DNS updates during the last 60 minutes
C64 ibDHCPDDNSAvgLatency1440	1.3.6.1.4.1.7779.3.1.1.4.1.5.4	Counter64	read-only	Average Latencies (in microseconds) for DHCPD dynamic DNS updates during the last 1 day
U32 ibDHCPDDNSTimeoutCount5	1.3.6.1.4.1.7779.3.1.1.4.1.5.5	Unsigned32	read-only	The number of timeout DHCPD dynamic DDNS updates during the last 5 minutes
U32 ibDHCPDDNSTimeoutCount15	1.3.6.1.4.1.7779.3.1.1.4.1.5.6	Unsigned32	read-only	The number of timeout DHCPD dynamic DDNS updates during the last 15 minutes
U32 ibDHCPDDNSTimeoutCount60	1.3.6.1.4.1.7779.3.1.1.4.1.5.7	Unsigned32	read-only	The number of timeout DHCPD dynamic DDNS updates during the last 60 minutes
U32 ibDHCPDDNSTimeoutCount1440	1.3.6.1.4.1.7779.3.1.1.4.1.5.8	Unsigned32	read-only	The number of timeout DHCPD dynamic DDNS updates during the last 1 day

RFC description

Infoblox DHCP One system MIB for monitoring DHCP subnet usage and lease statistics.

Start monitoring Infoblox DDI (DNS/DHCP/IPAM) appliance (DHCP One service) 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 IB-DHCPONE-MIB