ALTIGA-DNS-STATS-MIB

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Organization: Cisco Systems, Inc.

Last Updated: 2002-09-05

Category: VPN and Security, Vendor: Altiga

Description: Altiga (Cisco VPN 3000) DNS statistics MIB for monitoring DNS proxy query counts and resolution performance.

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What Is ALTIGA-DNS-STATS-MIB?

ALTIGA-DNS-STATS-MIB is a vendor MIB originally from Altiga Networks (later Cisco, as the VPN 3000 Concentrator series) that models statistics for the device's built-in DNS resolver/proxy functions. It exposes simple global counters covering attempted queries, successful responses, timeout failures, unreachable-server failures, and miscellaneous failures. Its monitoring focus is purely software-service health: it tells an administrator whether the device's DNS resolution path is functioning correctly, which matters because VPN concentrators rely on DNS for tasks like name-based authentication server or split-tunnel domain resolution. It is a small, self-contained statistics MIB without heavy dependency on other standard MIBs beyond basic SNMPv2 conventions. It is deployed on Cisco/Altiga VPN 3000 series concentrators in remote-access VPN environments. Engineers can download the ALTIGA-DNS-STATS-MIB file directly to load it into their MIB browser.

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

Cisco/Altiga VPN 3000 Series Concentrator

Monitoring Examples

An operator would poll alDnsStatsAttemptedQueries against alDnsStatsSuccessfulResponses to compute a DNS success rate, and a rising alDnsStatsTimeoutFailures or alDnsStatsUnreachableServerFailures count would indicate the configured DNS server is unreachable or overloaded. alDnsStatsMiscFailures catches other resolution errors not covered by the specific failure counters. Because these are cumulative counters, an admin typically tracks the delta over a polling interval to detect a recent spike in DNS problems affecting VPN client connectivity.

What Can Be Monitored

attempted DNS queries
successful DNS responses
DNS timeout failures
unreachable DNS server failures
miscellaneous DNS failures

Imported Objects

From ALTIGA-GLOBAL-REG

alDnsMibModule

OBJECT-IDENTITY

From ALTIGA-MIB

alDnsGroup	OBJECT-IDENTITY
alStatsDns	OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Gauge32
MODULE-IDENTITY
OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using alDnsStatsAttemptedQueries OID:

Select a Cisco (Altiga) VPN 3000 Series Concentrator (legacy) 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 alDnsStatsAttemptedQueries into the Find box to locate it in the OID tree, then select it and click OK. The number of DNS queries that were attempted. 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 Gauge32-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
altigaDnsStatsMibModule	1.3.6.1.4.1.3076.1.1.23.2			The Altiga DNS Statistics MIB models counters and objects that are of management interest for DNS. Acronyms The following acronyms are used in this document: DNS: Domain Name Service MIB: Management Information Base
altigaDnsStatsMibConformance	1.3.6.1.4.1.3076.1.1.23.2.1
altigaDnsStatsMibCompliances	1.3.6.1.4.1.3076.1.1.23.2.1.1
altigaDnsStatsMibCompliance	1.3.6.1.4.1.3076.1.1.23.2.1.1.1			The compliance statement for agents which implement the Altiga DNS Statistics MIB.
altigaDnsStatsGroup	1.3.6.1.4.1.3076.2.1.1.1.18.2			The objects for the DNS resolver module statistics.
alStatsDnsResolverGlobal	1.3.6.1.4.1.3076.2.1.2.18.1
G32 alDnsStatsAttemptedQueriesEx	1.3.6.1.4.1.3076.2.1.2.18.1.1	Gauge32	read-only	The number of DNS queries that were attempted.
G32 alDnsStatsSuccessfulResponses	1.3.6.1.4.1.3076.2.1.2.18.1.2	Gauge32	read-only	The number of queries that were successfully resolved.
G32 alDnsStatsTimeoutFailures	1.3.6.1.4.1.3076.2.1.2.18.1.3	Gauge32	read-only	The number of failures because there was no response from the server.
G32 alDnsStatsUnreachableServerFailures	1.3.6.1.4.1.3076.2.1.2.18.1.4	Gauge32	read-only	The number of failures because the address of the server is not reachable according to the Concentrator's routing table.
G32 alDnsStatsMiscFailures	1.3.6.1.4.1.3076.2.1.2.18.1.5	Gauge32	read-only	The number of failures for an unspecified reason.

RFC description

DNS statistics and counters for Altiga/Cisco VPN concentrators.

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Download ALTIGA-DNS-STATS-MIB