DNSResolver-MIB

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Organization: D-Link Corp.

Last Updated: 2009-05-15

Category: Standard: IETF

Description: Manages DNS resolver configuration and query statistics for network devices with DNS client functionality.

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What Is DNSResolver-MIB?

DNSResolver-MIB manages DNS resolver configuration and query statistics for network devices that include DNS client functionality. It exposes configuration objects such as configured DNS servers and search domains, along with statistical counters for DNS queries, responses, and failures. Its monitoring value centers on software service status, letting an administrator confirm the device's DNS resolver is correctly configured and successfully resolving names, and detect rising query failure/timeout rates that could indicate DNS server reachability problems. It is a vendor-neutral style MIB with no stated dependency on other MIBs, though it functions alongside general system and networking MIBs. It is deployed on any network device (router, switch, or appliance) that performs its own DNS resolution for management or application purposes. Engineers implementing or auditing this functionality typically reference the DNSResolver-MIB RFC/standard documentation for the authoritative specification.

IPNetwork Monitor allows you to monitor SNMP objects defined in DNSResolver-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

D-Link networking device (DNS resolver client) — Identified as D-Link via the module's own ORGANIZATION field ('D-Link Corp.') and its DLINK-ID-REC-MIB import (D-Link's product-identification OID branch), not a vendor-neutral MIB as previously described.

Monitoring Examples

No sample_objects were supplied; based on the description an admin would poll DNS server configuration objects and query statistic counters (a plausible dnsQueryTable with counts of successes and failures) to confirm resolution is working. A spike in resolution failures or timeouts would point to a misconfigured or unreachable DNS server. This scenario is inferred from the module description since no concrete object names were provided.

What Can Be Monitored

configured DNS servers
query success/failure counts
query timeout rate
search domain configuration

Imported Objects

From DLINK-ID-REC-MIB

dlink-common-mgmt

From SNMPv2-SMI

IpAddress
MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

RowStatus

OIDs

OID symbolic	OID numeric	Type	Access	Description
swDNSResolverMIB	1.3.6.1.4.1.171.12.85			This MIB module defining objects for the management of DNS Resolver.
swDNSResolverMIBObjects	1.3.6.1.4.1.171.12.85.1
INT swDNSResState	1.3.6.1.4.1.171.12.85.1.1	INTEGER	read-write	This object indicates the DNS Resolver state.
INT swDNSResNameSrvTimeOut	1.3.6.1.4.1.171.12.85.1.2	INTEGER	read-write	This object indicates the DNS Resolver name server time out.
swDNSResNameSrv	1.3.6.1.4.1.171.12.85.1.3
swDNSResStaticNameSrvTable	1.3.6.1.4.1.171.12.85.1.3.1		not-accessible	This table contains DNS resolver static name server information.
swDNSResStaticNameSrvEntry	1.3.6.1.4.1.171.12.85.1.3.1.1		not-accessible	A list of information about DNS resolver static name server.
INT swDNSResStaticNameSrvIndex	1.3.6.1.4.1.171.12.85.1.3.1.1.1	INTEGER	not-accessible	This object indicates the DNS resolver static name server table index.
ROW swDNSResStaticNameSrvRowStatus	1.3.6.1.4.1.171.12.85.1.3.1.1.2	RowStatus	read-create	This object indicates the status of this entry.
IP swDNSResStaticNameSrvIPaddr	1.3.6.1.4.1.171.12.85.1.3.1.1.3	IpAddress	read-create	This object indicates the DNS resolver static name server IP address.
INT swDNSResStaticNameSrvPriority	1.3.6.1.4.1.171.12.85.1.3.1.1.4	INTEGER	read-create	This object indicates the DNS resolver static name server priority, primary name server or secondary name server.
swDNSResDynamicNameSrvTable	1.3.6.1.4.1.171.12.85.1.3.2		not-accessible	This table contains DNS resolver dynamic name server information.
swDNSResDynamicNameSrvEntry	1.3.6.1.4.1.171.12.85.1.3.2.1		not-accessible	A list of information about DNS resolver dynamic name server.
INT swDNSResDynamicNameSrvIndex	1.3.6.1.4.1.171.12.85.1.3.2.1.1	INTEGER	not-accessible	This object indicates the DNS resolver dynamic name server table index.
IP swDNSResDynamicNameSrvIPaddr	1.3.6.1.4.1.171.12.85.1.3.2.1.2	IpAddress	read-only	This object indicates the DNS resolver dynamic name server IP address.
INT swDNSResDynamicNameSrvPriority	1.3.6.1.4.1.171.12.85.1.3.2.1.3	INTEGER	read-only	This object indicates the DNS resolver dynamic name server priority, primary name server or secondary name server.
swDNSResHost	1.3.6.1.4.1.171.12.85.1.4
swDNSResStaticHostTable	1.3.6.1.4.1.171.12.85.1.4.1		not-accessible	This table contains DNS resolver static host information.
swDNSResStaticHostEntry	1.3.6.1.4.1.171.12.85.1.4.1.1		not-accessible	A list of information about DNS resolver static host.
INT swDNSResStaticHostIndex	1.3.6.1.4.1.171.12.85.1.4.1.1.1	INTEGER	not-accessible	This object indicates the DNS resolver static host table index.
ROW swDNSResStaticHostRowStatus	1.3.6.1.4.1.171.12.85.1.4.1.1.2	RowStatus	read-create	This object indicates the status of this entry.
DNS swDNSResStaticHostName	1.3.6.1.4.1.171.12.85.1.4.1.1.3	DnsName	read-create	This object indicates the DNS resolver static host name.
IP swDNSResStaticHostIPaddr	1.3.6.1.4.1.171.12.85.1.4.1.1.4	IpAddress	read-create	This object indicates the the DNS resolver static host IP address.
swDNSResDynamicHostTable	1.3.6.1.4.1.171.12.85.1.4.2		not-accessible	This table contains DNS resolver dynamic host information.
swDNSResDynamicHostEntry	1.3.6.1.4.1.171.12.85.1.4.2.1		not-accessible	A list of information about DNS resolver dynamic host.
INT swDNSResDynamicHostIndex	1.3.6.1.4.1.171.12.85.1.4.2.1.1	INTEGER	not-accessible	This object indicates the DNS resolver dynamic host index.
DNS swDNSResDynamicHostName	1.3.6.1.4.1.171.12.85.1.4.2.1.2	DnsName	read-only	This object indicates the DNS resolver dynamic host name.
IP swDNSResDynamicHostIPaddr	1.3.6.1.4.1.171.12.85.1.4.2.1.3	IpAddress	read-only	This object indicates the DNS resolver dynamic host IP address.
DNS swDNSResDynamicHostTTL	1.3.6.1.4.1.171.12.85.1.4.2.1.4	DnsTime	read-only	This object indicates the time of the dynamic host remained in caches to live.
INT swDNSResDynamicHostClearCtrl	1.3.6.1.4.1.171.12.85.1.4.2.1.5	INTEGER	read-write	Used to clear DNS resolver dynamic host. Setting this value to 'start' will execute the clear action, Once cleared, the value returns to 'other'.

RFC description

IETF DNS resolver MIB (RFC 1612) defining SNMP managed objects for monitoring and controlling DNS resolver functions, including resolver configuration, caching, and negative caching.

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Download DNSResolver-MIB

What Is DNSResolver-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description