HM2-DNS-MIB

All MIBs › HM2-DNS-MIB

Organization: Hirschmann Automation and Control GmbH

Last Updated: 2011-06-17

Category: Protocol: DNS, Vendor: Belden

Description: Hirschmann HiOS (HM2) DNS MIB for Domain Name System client configuration and resolver settings.

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What Is HM2-DNS-MIB?

HM2-DNS-MIB is a Hirschmann HiOS proprietary MIB that manages the DNS client, DNS cache, and DNS caching-server functionality on Hirschmann industrial switches. It exposes configuration objects (client admin state, configuration source, list of configured DNS servers) as well as diagnostic tables that track per-server resolution status. Its monitoring value centers on software/service status rather than physical hardware: administrators use it to confirm whether DNS resolution is enabled (hm2DnsClientAdminState) and whether configured name servers are actually responding, which is essential for diagnosing failed hostname lookups used by other management protocols (e.g. NTP, syslog, RADIUS). It is a vendor-private extension that stands alongside standard IETF DNS-related MIB concepts but is not a direct dependency of any particular RFC. It is deployed on Hirschmann HiOS-based switches in industrial or utility networks where devices resolve hostnames for logging, authentication, or time-sync destinations. Engineers can download the HM2-DNS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in HM2-DNS-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

Hirschmann HiOS industrial Ethernet switch

Monitoring Examples

An admin would check hm2DnsClientAdminState to confirm DNS client functionality is turned on, then inspect hm2DnsClientServerCfgTable (rows keyed by hm2DnsClientServerIndex, holding hm2DnsClientServerAddressType and hm2DnsClientServerAddress) to verify which resolvers are configured. The companion hm2DnsClientServerDiagTable exposes per-server diagnostic entries (hm2DnsClientServerDiagIndex) that reveal whether a given configured DNS server is actually reachable and answering queries. A DNS server showing consistent diagnostic failures would explain downstream failures in hostname-based configuration (e.g. NTP or syslog servers specified by name).

What Can Be Monitored

DNS client admin state
configuration source
configured DNS server addresses
per-server DNS diagnostic status

Imported Objects

From HM2-TC-MIB

HmActionValue
HmEnabledStatus
hm2ConfigurationMibs	OBJECT-IDENTITY

From INET-ADDRESS-MIB

InetAddress
InetAddressType

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
OBJECT-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

RowStatus

OIDs

OID symbolic	OID numeric	Type	Access	Description
hm2DnsMib	1.3.6.1.4.1.248.11.90			Hirschmann DNS MIB for DNS client, DNS client cache and DNS caching server. Copyright (C) 2011. All Rights Reserved.
hm2DnsMibNotifications	1.3.6.1.4.1.248.11.90.0
hm2DnsMibObjects	1.3.6.1.4.1.248.11.90.1
hm2DnsClientGroup	1.3.6.1.4.1.248.11.90.1.1
HME hm2DnsClientAdminState	1.3.6.1.4.1.248.11.90.1.1.1	HmEnabledStatus	read-write	The operational status of DNS client. If disabled, no host name lookups will be done for names entered on the CLI and in the configuration of services e.g. NTP.
INT hm2DnsClientConfigSource	1.3.6.1.4.1.248.11.90.1.1.2	INTEGER	read-write	DNS client server source. If the value is set to user(1), the variables from hm2DnsClientServerCfgTable will be used. If the value is set to mgmt-dhcp(2), the DNS servers received by DHCP on the management interface will be used. If the value is set to provider(3), the DNS configuration will be taken from DHCP, PPP or PPPoE on the primary WAN link.
hm2DnsClientServerCfgTable	1.3.6.1.4.1.248.11.90.1.1.3		not-accessible	The table that contains the DNS Servers entries configured by the user in the system.
hm2DnsClientServerCfgEntry	1.3.6.1.4.1.248.11.90.1.1.3.1		not-accessible	An entry contains the IP address of a DNS server configured in the system.
I32 hm2DnsClientServerIndex	1.3.6.1.4.1.248.11.90.1.1.3.1.1	Integer32	not-accessible	The unique index used for each server added in the DNS servers table.
IPt hm2DnsClientServerAddressType	1.3.6.1.4.1.248.11.90.1.1.3.1.2	InetAddressType	read-write	Address type for DNS server. Currently, only ipv4 is supported.
IP hm2DnsClientServerAddress	1.3.6.1.4.1.248.11.90.1.1.3.1.3	InetAddress	read-write	The IP address of the DNS server.
ROW hm2DnsClientServerRowStatus	1.3.6.1.4.1.248.11.90.1.1.3.1.4	RowStatus	read-create	Describes the status of a row in the table.
hm2DnsClientServerDiagTable	1.3.6.1.4.1.248.11.90.1.1.4		not-accessible	The table that contains the DNS Servers entries configured and used in the system.
hm2DnsClientServerDiagEntry	1.3.6.1.4.1.248.11.90.1.1.4.1		not-accessible	An entry contains the IP address of a DNS server used in the system.
I32 hm2DnsClientServerDiagIndex	1.3.6.1.4.1.248.11.90.1.1.4.1.1	Integer32	not-accessible	The unique index used for each server added in the DNS servers table.
IPt hm2DnsClientServerDiagAddressType	1.3.6.1.4.1.248.11.90.1.1.4.1.2	InetAddressType	read-only	Address type for DNS server used. Currently, only ipv4 is supported.
IP hm2DnsClientServerDiagAddress	1.3.6.1.4.1.248.11.90.1.1.4.1.3	InetAddress	read-only	The IP address of the DNS server used by the system. The entry can be configured by the provider, e.g. through DHCP client or PPPoE client.
hm2DnsClientGlobalGroup	1.3.6.1.4.1.248.11.90.1.1.5
STR hm2DnsClientDefaultDomainName	1.3.6.1.4.1.248.11.90.1.1.5.1	SnmpAdminString	read-write	The default domain name for unqualified hostnames.
I32 hm2DnsClientRequestTimeout	1.3.6.1.4.1.248.11.90.1.1.5.2	Integer32	read-write	The timeout before retransmitting a request to the server. The timeout value is configured and displayed in seconds.
I32 hm2DnsClientRequestRetransmits	1.3.6.1.4.1.248.11.90.1.1.5.3	Integer32	read-write	The number of times the request is retransmitted. The request is retransmitted provided the maximum timeout value allows this many number of retransmits.
HME hm2DnsClientCacheAdminState	1.3.6.1.4.1.248.11.90.1.1.5.4	HmEnabledStatus	read-write	Enables/Disables DNS client cache functionality of the device.
hm2DnsClientStaticHostConfigTable	1.3.6.1.4.1.248.11.90.1.1.6		not-accessible	Static table of DNS hostname to IP address table
hm2DnsClientStaticHostConfigEntry	1.3.6.1.4.1.248.11.90.1.1.6.1		not-accessible	An entry in the static DNS hostname IP address list. Rows may be created or deleted at any time by the DNS resolver and by SNMP SET requests.
I32 hm2DnsClientStaticIndex	1.3.6.1.4.1.248.11.90.1.1.6.1.1	Integer32	not-accessible	The index of the entry.
STR hm2DnsClientStaticHostName	1.3.6.1.4.1.248.11.90.1.1.6.1.2	SnmpAdminString	read-create	The static hostname.
IPt hm2DnsClientStaticHostAddressType	1.3.6.1.4.1.248.11.90.1.1.6.1.3	InetAddressType	read-create	Address type for static hosts used. Currently, only ipv4 is supported.
IP hm2DnsClientStaticHostIPAddress	1.3.6.1.4.1.248.11.90.1.1.6.1.4	InetAddress	read-create	The IP address of the static host.
ROW hm2DnsClientStaticHostStatus	1.3.6.1.4.1.248.11.90.1.1.6.1.5	RowStatus	read-create	Describes the status of a row in the table.
hm2DnsCacheGroup	1.3.6.1.4.1.248.11.90.1.2
HME hm2DnsCacheAdminState	1.3.6.1.4.1.248.11.90.1.2.1	HmEnabledStatus	read-write	Enables/Disables DNS cache functionality of the device. NOTE: this object is deprecated and replaced by hm2DnsClientCacheAdminState/hm2DnsCachingServerAdminState.
HMA hm2DnsCacheFlushAction	1.3.6.1.4.1.248.11.90.1.2.2	HmActionValue	read-write	Setting this value to action will flush the DNS cache. After flushing the cache, it will be set to noop automatically. NOTE: this object is deprecated and replaced by hm2DevMgmtActionFlushDnsClientCache/hm2DevMgmtActionFlushDnsCachingServerCache.
hm2DnsCachingServerGroup	1.3.6.1.4.1.248.11.90.1.3
hm2DnsCachingServerGlobalGroup	1.3.6.1.4.1.248.11.90.1.3.1
HME hm2DnsCachingServerAdminState	1.3.6.1.4.1.248.11.90.1.3.1.1	HmEnabledStatus	read-write	Enables/Disables DNS caching server functionality of the device.
hm2DnsMibSNMPExtensionGroup	1.3.6.1.4.1.248.11.90.3
hm2DnsCHHostNameAlreadyExistsSESError	1.3.6.1.4.1.248.11.90.3.1			The host name entered exists and is associated with an IP. The change attempt was canceled.
hm2DnsCHBadIpNotAcceptedSESError	1.3.6.1.4.1.248.11.90.3.2			The Ip Adress entered is not a valid one for a host. The change attempt was canceled.
hm2DnsCHBadRowCannotBeActivatedSESError	1.3.6.1.4.1.248.11.90.3.3			The instance cannot be activated due to compliance issues. Please modify the entry and try again.

RFC description

Provides DNS client and caching server management for Hirschmann industrial Ethernet switches. Handles DNS configuration, client settings, and cache operations.

Start monitoring Hirschmann HiOS industrial Ethernet switch (DNS client/cache) 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 HM2-DNS-MIB

What Is HM2-DNS-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description