Internet Draft - DNS MIB - September 2, 1992
DNS MIB Extensions
2-September-1992
DNS Working Group
Jon Saperia
Digital Equipment Corporation
saperia@tcpjon.ogo.dec.com
Status of this Memo
This document is an Internet Draft. Internet Drafts are working
documents of the Internet Engineering Task Force (IETF), its
Areas, and its Working Groups. Note that other groups may also
distribute working documents as Internet Drafts). Internet
Drafts are draft documents valid for a maximum of six months.
Internet Drafts may be updated, replaced, or obsoleted by other
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abstract listing contained in each Internet Draft directory to
learn the current status of this or any other Internet Draft.
This draft document will be submitted to the RFC editor as
a proposed extension to the SNMP MIB. Distribution of this
document is unlimited. Please send comments or corrections to
the editor.
Abstract
This memo defines a set of DNS (Domain Name System) exten-
sions that have been created for the Internet MIB. When used
in conjunction with the Structure of Management Information (RFC
1155), the Management Information Base for Network Management
of TCP/IP-based internets (RFC 1213) and the Simple Network
Management Protocol (RFC 1157), it will be possible to provide
Internet Draft - DNS MIB - September 2, 1992
integrated network management of DNS client and server soft-
ware in standard TCP/IP based environments. This document was
produced by the DNS working group.
Digital Equipment Corporation
Maynard, Massachusetts
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CONTENTS
1 Introduction......................................... 1
2 Selected Objects..................................... 1
3 Objects.............................................. 2
3.1 Format of Definitions............................. 3
3.2 Textual Conventions............................... 4
4 Object Definitions................................... 4
5 Acknowledgements..................................... 60
6 References........................................... 60
iii
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1 Introduction
With the adoption of The Simple Network Management Protocol (RFC
1157), the Management Information Base for network management of
TCP/IP-based internets (RFC 1213), and the Structure of Manage-
ment Information (RFC 1155) by the Internet, and a large number
of vendor implementations of these standards in commercially
available products, it became possible to provide a higher level
of effective network management in TCP/IP-based internets than
previously available. With the growth in the use of these stan-
dards, it has become possible to consider the management of
other elements of the infrastructure beyond the basic TCP/IP
protocols. A key element of the TCP/IP infrastructure is the
DNS.
Up to this point there has been no mechanism to integrate the
management of the DNS with SNMP-based managers. This memo pro-
vides the mechanisms by which IP-based management stations can
effectively manage DNS client and server software in an inte-
grated fashion through the use of the standard Internet SMI, MIB
and Simple Network Management Protocol.
New DNS MIB objects have been defined to be used in conjunction
with the Internet MIB to allow access and control of the DNS via
SNMP by the Internet community.
2 Selected Objects
The objects included in this memo have been created from infor-
mation contained in the relevant DNS related RFCs which include:
Domain Administrators Guide (RFC 1032), Domain Administrators
Operations Guide (RFC 1033) Domain Names - Concepts and Facili-
ties (RFC 1034), Domain Names - Implementation and Specification
(RFC 1035), and Requirements for Internet Hosts - Application
and Support (RFC 1123). In addition, objects have been created
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based on expected operational need and from the example of ex-
isting DNS specific tools. These objects have be ordered into
groups as follows:
o General Configuration Group
o Resolver Configuration Group
o Server Configuration Group
o Resolver Counter Group
o Server Counter Group
o Records Group
o Resolver Cache Group
o Resolver Negative Cache Group
o Resolver Statistics Group
o Server Management Group
Many of the objects defined in this memo have been created from
information contained in existing configuration files used by
many DNS implementations. This information has been converted
into a standard form using the Internet Standard SMI defined in
RFC 1155.
3 Objects
The objects in this memo are described using the standard Inter-
net SMI and BER of RFC 1155. Each object description includes
the objects name, its syntax and encoding. Just as with objects
supported in the MIB (RFC 1156), an object name is identified
with an object identifier which has been administratively as-
signed. This identifies an Object Type. When an object type
is combined with a specific instance - the particular object
is uniquely identified. Use of Object Descriptors in this memo
is consistent with that of RFC 1156 - meaning that they are
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text strings meant to be read by humans. The descriptors have
been created from a variety of sources. For the most part, the
descriptions are influenced by by the DNS related RFCs noted
above. For example, the descriptors for counters used for the
various types of queries of DNS records are influenced by the
definitions used for the various record types found in Domain
Names - Implementation and Specification RFC 1035.
3.1 Format of Definitions
An object in this memo is specified by five fields of informa-
tion: Object, Syntax, Description, Access, and Status.
The OBJECT is a textual name (OBJECT DESCRIPTOR) for that ob-
ject type combined with an administratively obtained OBJECT
IDENTIFIER.
SYNTAX : For each object type, its abstract syntax is presented
using the ASN.1 specified in RFC 1155.
DESCRIPTION: A general description of the object type.
ACCESS : The standard access keywords supported in RFC 1156 are
used. The keywords used in this MIB are: read-only, read-write,
and, not-accessible.
STATUS : The status field is used to describe with a single
keyword whether the object type is mandatory or optional. Status
keywords of obsolete and deprecated are not used in this memo
since this is the first version of the DNS MIB.
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3.2 Textual Conventions
Several datatypes have been introduced as a textual conven-
tions in this DNS MIB document. These additions will facilitate
the common understanding of information used by the DNS. No
changes to the SMI or the SNMP are necessary to support these
conventions which are described in 4.0 (Object Definitions).
4 Object Definitions
RFCxxxx-dnsMIB
DEFINITIONS ::= BEGIN
IMPORTS
mgmt, OBJECT-TYPE, NetworkAddress, IpAddress,
Counter, Gauge, TimeTicks
FROM RFC1155-SMI
DisplayString
FROM RFC1213;
-- DNS MIB
dns OBJECT IDENTIFIER ::= { experimental 9999 }
-- textual conventions
DnsDate ::= DisplayString
-- This data type is intended to provide a consistent
-- method of reporting date information. The first four
-- octets represent the year, the next two month of the year
-- expressed numerically, the next four octets represent the day
-- followed by hour of the day using a 24 hour clock followed by a
-- decimal point. The next two octets represent tenths and
-- hundreths of a second. The final 5 octets provide a mechanism
-- to relate the host's time to Coordinated Universal Time. Tuesday
-- May 26, 1992 at 1:30 PM EDT would be represented as:
-- 199205261330.00-400.
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DnsName ::= OCTET STRING
-- A DNS name is a sequence of octets with internal length encoding.
-- While it is often the case that the printed form of a DNS name is
-- a dotted-format Internet hostname, this is not always the case.
-- All occurrences of DNS names in this MIB us the internal format
-- used by the DNS protocols embedded within an OCTET STRING.
DnsClass ::= INTEGER (0..65535)
-- This data type is used to represent the class values which appear
-- in Resource Records in the DNS. A 16-bit unsigned integer is
-- used to allow room for new classes records to be defined.
-- Existing classes are listed in RFC 1035.
DnsType ::= INTEGER (0..65535)
-- This data type is used to represent the type values which appear
-- in Resource Records in the DNS. A 16-bit unsigned integer is
-- used to allow room for new record types to be defined.
-- Existing types are listed in RFC 1035.
DnsQClass ::= INTEGER (0..65535)
-- This data type is used to represent the QClass values which appear
-- in Resource Records in the DNS. A 16-bit unsigned integer is
-- used to allow room for new QClass records to be defined. Existing
-- Q classes are listed in RFC 1035.
DnsQType ::= INTEGER (0..65535)
-- This data type is used to represent the QType values which appear
-- in Resource Records in the DNS. A 16-bit unsigned integer is
-- used to allow room for new QType records to be defined.
-- Existing QTypes are listed in RFC 1035.
DnsTime ::= INTEGER
-- DnsTime values are 32-bit unsigned integers which measure time in
-- seconds.
DnsValid ::= INTEGER { valid (1), clear (2) }
-- Many of the tables in this MIB have as one of their columns, an
-- object which can be set to a value of 2 to delete that
-- row of the table. If a read operation is performed on this
-- object, a value of 1 is returned to indicate a valid row in the
-- table.
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DnsOpCode ::= INTEGER (0..15)
-- This data type is used to represent the DNS OPCODE used in the
-- header section of DNS messages. Existing OPCODE vales are listed
-- in RFC 1035.
DnsRespCode ::= INTEGER (0..15)
-- This data type is used to represent the DNS RCODE value in response
-- messages. Existing RCODE valeus are listed in RFC 1035.
-- groups in the dns mib
dnsGenConfig OBJECT IDENTIFIER ::= { dns 1 }
dnsResConfig OBJECT IDENTIFIER ::= { dns 2 }
dnsServerConfig OBJECT IDENTIFIER ::= { dns 3 }
dnsResCounter OBJECT IDENTIFIER ::= { dns 4 }
dnsServCounter OBJECT IDENTIFIER ::= { dns 5 }
dnsRec OBJECT IDENTIFIER ::= { dns 6 }
dnsResCache OBJECT IDENTIFIER ::= { dns 7 }
dnsResNCache OBJECT IDENTIFIER ::= { dns 8 }
dnsResStats OBJECT IDENTIFIER ::= { dns 9 }
dnsMgmt OBJECT IDENTIFIER ::= { dns 10 }
-- General Configuration Group
-- The implementation of the General Configuration group is
-- mandatory for all systems.
dnsGenConfigDnsUse OBJECT-TYPE
SYNTAX INTEGER {
primary (1),
not-primary (2),
not-used (3)
}
ACCESS read-write
STATUS mandatory
DESCRIPTION
"A value of 1 indicates that the DNS is used as the
primary mechanism for name resolution on this system.
A 2 indicates that some other mechanism is used as the
primary mechanism for name resolution and that the DNS
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is used as a back-up. A value of 3 indicates that DNS
is not used for name resolution."
::= { dnsGenConfig 1 }
-- Resolver Configuration Group
-- The implementation of the Resolver Configuration group is
-- mandatory for all systems which implement any resolver software
-- functions.
dnsResConfigId OBJECT-TYPE
SYNTAX DisplayString
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Name and version identification of DNS resolver software."
::= { dnsResConfig 1 }
dnsResConfigService OBJECT-TYPE
SYNTAX INTEGER {
recursive-only (1),
iterative-only (2),
recursive-and-iterative (3)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Kind of DNS resolution service provided.
RECURSIVE-ONLY is a stub resolver.
ITERATIVE-ONLY is a normal full service resolver.
RECURSIVE-AND-ITERATIVE is a full service resolver which
performs a mix of recursive and iterative queries."
::= { dnsResConfig 2 }
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dnsResConfigMaxCnames OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-write
STATUS mandatory
DESCRIPTION
"Limit on how many CNAMEs the resolver should allow before
deciding that there's a CNAME loop. Zero means that
resolver has no explicit CNAME limit."
::= { dnsResConfig 3 }
-- DNS Resolver Seat Belt Table
dnsResConfigSeatBeltTable OBJECT-TYPE
SYNTAX SEQUENCE OF DnsResConfigSeatBeltEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Table of safety belt information used by the resolver
when it hasn't got any better idea of where to send a
query, such as when the resolver is booting."
::= { dnsResConfig 4 }
dnsResConfigSeatBeltEntry OBJECT-TYPE
SYNTAX DnsResConfigSeatBeltEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"An entry in the resolver's seatbelt table."
INDEX { dnsResConfigSeatBeltAddr,
dnsResConfigSeatBeltSubTree,
dnsResConfigSeatBeltClass }
::= { dnsResConfigSeatBeltTable 1 }
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DnsResConfigSeatBeltEntry ::=
SEQUENCE {
dnsResConfigSeatBeltAddr
IpAddress,
dnsResConfigSeatBeltName
DnsName,
dnsResConfigSeatBeltSvc
INTEGER,
dnsResConfigSeatBeltPref
INTEGER,
dnsResConfigSeatBeltSubTree
DnsName,
dnsResConfigSeatBeltClass
DnsClass,
dnsResConfigSeatBeltFile
OCTET STRING,
dnsResConfigSeatBeltDate
DnsDate,
dnsResConfigSeatBeltValid
DnsValid
}
dnsResConfigSeatBeltAddr OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-only
STATUS mandatory
DESCRIPTION
"IP address of a SeatBelt name server."
::= { dnsResConfigSeatBeltEntry 1 }
dnsResConfigSeatBeltName OBJECT-TYPE
SYNTAX DnsName -- OCTET STRING
ACCESS read-only
STATUS mandatory
DESCRIPTION
"DNS name of a SeatBelt nameserver, if known, otherwise
it is null."
::= { dnsResConfigSeatBeltEntry 2 }
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dnsResConfigSeatBeltSvc OBJECT-TYPE
SYNTAX INTEGER {
iterative (1),
recursive (2)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Type-Of-Service resolver expects from seatbelt
nameserver. ITERATIVE indicates that resolver will be
directing iterative queries to this name server (RD
bit turned off), while RECURSIVE indicates that
resolver will be directing recursive queries to this
name server (RD bit turned on)."
::= { dnsResConfigSeatBeltEntry 3 }
dnsResConfigSeatBeltPref OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This value identifies the preference for the server
identified in this row of the table. The lower the
value, the more desirable the particular server is
considered."
::= { dnsResConfigSeatBeltEntry 4 }
dnsResConfigSeatBeltSubTree OBJECT-TYPE
SYNTAX DnsName -- OCTET STRING
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The DNS sub tree name for queries sent to the name
server identified by dnsResConfigSeatBeltName."
::= { dnsResConfigSeatBeltEntry 5 }
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dnsResConfigSeatBeltClass OBJECT-TYPE
SYNTAX DnsClass -- INTEGER (0..65535)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The class of DNS queries that will be sent to the
server identified by dnsResConfigSeatBeltName."
::= { dnsResConfigSeatBeltEntry 6 }
dnsResConfigSeatBeltFile OBJECT-TYPE
SYNTAX DisplayString
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The name of the source file which contains information
read by the resolver at initialization."
::= { dnsResConfigSeatBeltEntry 7 }
dnsResConfigSeatBeltDate OBJECT-TYPE
SYNTAX DnsDate -- DisplayString
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This is the date information found in
dnsResConfigSeatBeltFile was last changed."
::= { dnsResConfigSeatBeltEntry 8 }
dnsResConfigSeatBeltValid OBJECT-TYPE
SYNTAX DnsValid
ACCESS read-write
STATUS mandatory
DESCRIPTION
"Setting this variable to CLEAR deletes this SeatBelt
server."
::= { dnsResConfigSeatBeltEntry 9 }
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-- Server Configuration Group
-- The implementation of the Server Configuration Group is
-- mandatory for all systems which implement DNS server software
-- functions.
dnsServerConfigImplementIdent OBJECT-TYPE
SYNTAX DisplayString
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The implementation identification string for the DNS
software in use on the system, for example; FNS2.1"
::= { dnsServerConfig 1 }
dnsServerConfigRecurs OBJECT-TYPE
SYNTAX INTEGER {
available (1),
restricted (2),
unavailable (3)
}
ACCESS read-write
STATUS mandatory
DESCRIPTION
"This represents the recursion status of requests made
to this server. The possible values are: available -
performs recursion on requests from clients.
Restricted - recursion is performed on requests from
clients which are on an access control list.
Unavailable - recursion is not available."
::= { dnsServerConfig 2 }
-- Resolver Counters Group
-- The implementation of the Resolver Counters Group is mandatory for
-- all systems which implement resolver functions
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dnsResCounterUpTime OBJECT-TYPE
SYNTAX DnsTime
ACCESS read-only
STATUS mandatory
DESCRIPTION
"If the resolver has a persistent state, e.g., a
process; this value will be the time elapsed since it
started. For software that does not have persistence,
this value will be 0."
::= { dnsResCounter 1 }
dnsResCounterResetTime OBJECT-TYPE
SYNTAX DnsTime
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Elapsed time since cache was reloaded."
::= { dnsResCounter 2 }
dnsResCounterInUpkts OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of UDP packets received by the resolver
process(s)."
::= { dnsResCounter 3 }
dnsResCounterOutUPkts OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of UDP packets sent by the resolver
process(s)."
::= { dnsResCounter 4 }
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dnsResCounterTCPInitiatns OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of attempts to initiate TCP connections with
servers."
::= { dnsResCounter 5 }
dnsResCounterInTCPMesgs OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of received DNS messages over TCP by the
resolver process."
::= { dnsResCounter 6 }
dnsResCounterOutTCPMesgs OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of out bound DNS messages sent over TCP by the
resolver."
::= { dnsResCounter 7 }
-- Resolver Counter Table
dnsResCounterTable OBJECT-TYPE
SYNTAX SEQUENCE OF DnsResCounterTableEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Table of the current count of resolver queries and
answers."
::= { dnsResCounter 8 }
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dnsResCounterTableEntry OBJECT-TYPE
SYNTAX DnsResCounterTableEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Entry in the resolver counter table. Entries are
indexed by dns OpCode."
INDEX { dnsResCounterOpCode }
::= { dnsResCounterTable 1 }
DnsResCounterTableEntry ::=
SEQUENCE {
dnsResCounterOpCode
DnsOpCode,
dnsResCounterQueries
Counter,
dnsResCounterResponses
Counter
}
dnsResCounterOpCode OBJECT-TYPE
SYNTAX DnsOpCode -- INTEGER (0..15)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The index to this table. The OpCodes that have
already been defined are found in RFC1035."
::= { dnsResCounterTableEntry 1 }
dnsResCounterQueries OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of queries [total] that have sent out by the
resolver since initialization for the OpCode which is
the index to this row of the table."
::= { dnsResCounterTableEntry 2 }
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dnsResCounterResponses OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of responses [total] that have been received
by the resolver since initialization for the OpCode
which is the index to this row of the table."
::= { dnsResCounterTableEntry 3 }
-- Resolver Response Code Counter Table
dnsResResponseTable OBJECT-TYPE
SYNTAX SEQUENCE OF DnsResResponseTableEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Table of the current count of responses to resolver
queries."
::= { dnsResCounter 9 }
dnsResResponseTableEntry OBJECT-TYPE
SYNTAX DnsResResponseTableEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Entry in the resolver response table. Entries are
indexed by DNS response code."
INDEX { dnsResResponseCode }
::= { dnsResResponseTable 1 }
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DnsResResponseTableEntry ::=
SEQUENCE {
dnsResResponseCode
DnsRespCode,
dnsResResponses
Counter
}
dnsResResponseCode OBJECT-TYPE
SYNTAX DnsRespCode -- INTEGER (0..15)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The index to this table. The Response Codes that have
already been defined are found in RFC1035."
::= { dnsResResponseTableEntry 1 }
dnsResResponses OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of responses the resolver has received for the
response code value which identifies this row of the
table."
::= { dnsResResponseTableEntry 2 }
-- Additional DNS Resolver Counter Objects
dnsResCounterNonAuthDataResps OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests made by the resolver for which a
non-authoritative answer (cached data) was received."
::= { dnsResCounter 10 }
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dnsResCounterNonAuthNoDataResps OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests made by the resolver for which a
non-authoritative answer - no such data response
(empty answer) was received."
::= { dnsResCounter 11 }
dnsResCounterMartians OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of responses received which were received from
servers that the resolver does not think it asked."
::= { dnsResCounter 12 }
dnsResCounterRecdResponses OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of responses received to all queries."
::= { dnsResCounter 13 }
dnsResCounterDuplicates OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of responses received which were duplicates and
ignored by the resolver."
::= { dnsResCounter 14 }
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dnsResCounterUnparseResps OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of responses received which were unparseable."
::= { dnsResCounter 15 }
dnsResCounterRootAttempts OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of attempts made by the resolver to connect
with root servers."
::= { dnsResCounter 16 }
dnsResCounterReferals OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of responses which were received from
servers redirecting query to another server."
::= { dnsResCounter 17 }
dnsResCounterRetrans OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number requests retransmitted for all reasons."
::= { dnsResCounter 18 }
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dnsResCounterNoResponses OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of queries that were retransmitted because of
no response."
::= { dnsResCounter 19 }
dnsResCounterRootRetrans OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of queries that were retransmitted that were to
root servers."
::= { dnsResCounter 20 }
dnsResCounterInternals OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests internally generated by the
resolver."
::= { dnsResCounter 21 }
dnsResCounterInternalTimeOuts OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests internally generated which timed
out."
::= { dnsResCounter 22 }
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-- Server Counter Group
-- The implementation of the Server Counter Group is mandatory for
-- all systems which offer either recursive or non recursive server
-- software functions.
-- Several of the objects in this group make distinctions between
-- queries which originate with the local host, within the same
-- zone as the local host or come from outside the zone of the
-- server. The purpose of these distinctions is to allow for
-- implementations to group queries and responses on this basis.
-- One way in which servers may make these distinctions is by
-- looking at the source IP address of the DNS query. If the
-- source of the query is 'your own' then the query should be
-- counted as 'yourself' - local host. If the source of the query
-- matches an 'access list' - the the query came from a friend,
-- that is; within the local zone. What constitutes an 'access
-- list' is implementation dependent and could be as simple as all
-- hosts on the same IP network as the DNS server are classed as in
-- the local zone and are 'friends'. In order to avoid double
-- counting, the following rules apply:
-- 1. No host is in more than one of the three groups defined above.
-- 2. All queries from the local host are always counted in the
-- 'yourself' group regardless of what the access list, if any,
-- says.
-- 3. The access list should not define 'your friends' in such a way
-- that it includes all hosts, that is 'not everybody is your
-- friend'.
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dnsServCounterUTime OBJECT-TYPE
SYNTAX DnsTime
ACCESS read-only
STATUS mandatory
DESCRIPTION
"If the server has a persistent state, e.g., a
process; this value will be the time elapsed since it
started. For software that does not have persistence,
this value will be 0."
::= { dnsServCounter 1 }
dnsServCounterInUPkts OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number [total] of UDP packets received by the server."
::= { dnsServCounter 2 }
dnsServCounterOutUPkts OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number [total] of UDP packets sent by the server."
::= { dnsServCounter 3 }
dnsServCounterTCPConns OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of TCP connections received by the server."
::= { dnsServCounter 4 }
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dnsServCounterTCPInitiatns OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of attempt to initiate TCP connections with
other servers."
::= { dnsServCounter 5 }
dnsServCounterInTCPMesgs OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of received DNS messages over TCP by the server."
::= { dnsServCounter 6 }
dnsServCounterOutTCPMesgs OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of out bound DNS messages over TCP sent by the
server."
::= { dnsServCounter 7 }
dnsServCounterSelfAuthAns OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests the server has processed with
authoritative data which originated from a resolver
on the same host."
::= { dnsServCounter 8 }
Document Expiration Date - March 7, 1993 - Saperia 23
Internet Draft - DNS MIB - September 2, 1992
dnsServCounterSelfAuthNoNames OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests the server has processed which
originated from a resolver on the same host for which
there has been an authoritative no such name answer
given."
::= { dnsServCounter 9 }
dnsServCounterSelfAuthNoDataReqsts OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests the server has processed which
originated from a resolver on the same host for which
there has been an authoritative no such data answer
(empty answer) made."
::= { dnsServCounter 10 }
dnsServCounterSelfNonAuthDataReqsts OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests the server has processed which
originated from a resolver on the same host for which
a non-authoritative answer (cached data) was made."
::= { dnsServCounter 11 }
24 Document Expiration Date - March 7, 1993 - Saperia
Internet Draft - DNS MIB - September 2, 1992
dnsServCounterSelfNonAuthNoDataReqsts OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests the server has processed which
originated from a resolver on the same host for which
a non-authoritative answer - no such data response was
made (empty answer)."
::= { dnsServCounter 12 }
dnsServCounterSelfCAnyReqsts OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests the server has processed which
originated from a resolver on the same host which
were answers to class=* queries."
::= { dnsServCounter 13 }
dnsServCounterSelfIAnsReqsts OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of inverse queries the server has processed which
originated from a resolver on the same host."
::= { dnsServCounter 14 }
dnsServCounterSelfRefs OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of queries the server has processed
which originated from a resolver on the same
host and were referred to other servers."
::= { dnsServCounter 15 }
Document Expiration Date - March 7, 1993 - Saperia 25
Internet Draft - DNS MIB - September 2, 1992
dnsServCounterSelfErrors OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests the server has processed which
originated from a resolver on the same host which
have been answered with errors (RCODE values other
than 0). RCODE values are defined in RFC1035."
::= { dnsServCounter 16 }
dnsServCounterSelfRelNames OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests received for names that are only
1 label long (text form - no internal dots) the
server has processed which originated from a resolver
on the same host."
::= { dnsServCounter 17 }
dnsServCounterFriendsAuthAns OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of queries originating from friends which
were authoritatively answered. The definition of
friends is a locally defined matter."
::= { dnsServCounter 18 }
26 Document Expiration Date - March 7, 1993 - Saperia
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dnsServCounterFriendsNoSuchNames OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of queries originating from friends, for
which authoritative no such name (NXDOMAIN) responses
were made. The definition of friends is a locally
defined matter."
::= { dnsServCounter 19 }
dnsServCounterFriendsZoneNoDataResps OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of queries originating from friends for
which authoritative no such data (empty answer)
responses were made. The definition of friends is
a locally defined matter."
::= { dnsServCounter 20 }
dnsServCounterFriendsNonAuthDatas OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of queries originating from friends which
were non-authoritatively answered (cached data).
The definition of friends is a locally defined matter."
::= { dnsServCounter 21 }
Document Expiration Date - March 7, 1993 - Saperia 27
Internet Draft - DNS MIB - September 2, 1992
dnsServCounterFriendsNonAuthNoDatas OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of queries originating from friends which
were non-authoritatively answered with no such data
(empty answer)."
::= { dnsServCounter 22 }
dnsServCounterFriendsCAnys OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of answers to class=* queries which originated
from friends. The definition of friends is a locally
defined matter."
::= { dnsServCounter 23 }
dnsServCounterFriendsInverses OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of responses to inverse queries which originated
from friends. The definition of friends is a locally
defined matter."
::= { dnsServCounter 24 }
dnsServCounterFriendsRefs OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests which originated from friends
that were forwarded to other servers. The definition
of friends is a locally defined matter."
::= { dnsServCounter 25 }
28 Document Expiration Date - March 7, 1993 - Saperia
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dnsServCounterFriendsErrors OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests the server has processed which
originated from friends and were answered with errors
(RCODE values other than 0). RCODE values are defined
in RFC1035. The definition of friends is a locally
defined matter."
::= { dnsServCounter 26 }
dnsServCounterFriendsRels OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests received for names from friends
that are only 1 label long (text form - no internal
dots) the server has processed."
::= { dnsServCounter 27 }
dnsServCounterRemoteAuthAns OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of queries originating from systems which have
not been defined as friends, which were
authoritatively answered."
::= { dnsServCounter 28 }
Document Expiration Date - March 7, 1993 - Saperia 29
Internet Draft - DNS MIB - September 2, 1992
dnsServCounterRemoteNoNames OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of queries originating from systems which
have not been defined as friends, for which
authoritative no such name responses were made."
::= { dnsServCounter 29 }
dnsServCounterRemoteNoDataResps OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of queries originating from systems which
have not been defined as friends, for which
authoritative no such data (empty answer)
responses were made."
::= { dnsServCounter 30 }
dnsServCounterRemoteNonAuthDatas OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of queries originating from systems which
have not been defined as friends, which were
non-authoritatively answered (cached data)."
::= { dnsServCounter 31 }
30 Document Expiration Date - March 7, 1993 - Saperia
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dnsServCounterRemoteNonAuthNoDatas OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of queries originating from systems which
have not been defined as friends, which were
non-authoritatively answered with no data
(empty answer)."
::= { dnsServCounter 32 }
dnsServCounterRemoteCAnyResps OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of answers to class=* queries which originated
from systems which have not been defined as friends."
::= { dnsServCounter 33 }
dnsServCounterRemoteInverses OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of answers to inverse queries which originated
from systems which have not been defined as friends."
::= { dnsServCounter 34 }
dnsServCounterRemoteRefs OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests which originated from systems which
have not been defined as friends that were forwarded to
other servers."
::= { dnsServCounter 35 }
Document Expiration Date - March 7, 1993 - Saperia 31
Internet Draft - DNS MIB - September 2, 1992
dnsServCounterRemoteErrors OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests the server has processed which
originated from systems which have not been defined as
friends that were answered with errors (RCODE values other
than 0). RCODE values are defined in RFC1035."
::= { dnsServCounter 36 }
dnsServCounterRemoteRelNames OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests received by the server which originated
from systems which have not been defined as friends for
names that are only 1 label long (text form - no
internal dots)."
::= { dnsServCounter 37 }
dnsServCounterReqRefs OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of DNS requests refused by the server process."
::= { dnsServCounter 38 }
dnsServCounterReqUnparses OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests received which were unparseable."
::= { dnsServCounter 39 }
32 Document Expiration Date - March 7, 1993 - Saperia
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dnsServCounterLocalErrors OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests which were aborted for other
(local) server errors."
::= { dnsServCounter 40 }
dnsServCounterDuplicates OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of duplicate requests which were received and
not forwarded."
::= { dnsServCounter 41 }
dnsServCounterRelRemotes OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of requests received for names that are only
1 label long (text form - no internal dots) the
server has processed relative names from hosts
outside of the server zone."
::= { dnsServCounter 42 }
-- DNS Server Counter Table
dnsServCounterTable OBJECT-TYPE
SYNTAX SEQUENCE OF DnsServCounterEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Counter information based on DNS class and
record type."
::= { dnsServCounter 43 }
Document Expiration Date - March 7, 1993 - Saperia 33
Internet Draft - DNS MIB - September 2, 1992
dnsServCounterEntry OBJECT-TYPE
SYNTAX DnsServCounterEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"This table contains count information for each DNS
record and class type known to the server. The index
allows management software to to create indices to the
table to get the specific information desired, e.g.,
number or A record queries over UDP which came to this
server from a specific IP address."
INDEX { dnsServCounterOpCode, dnsServCounterQClass,
dnsServCounterQueryType, dnsServCounterQuerySource,
dnsServCounterTransport }
::= { dnsServCounterTable 1 }
DnsServCounterEntry ::=
SEQUENCE {
dnsServCounterOpCode
DnsOpCode,
dnsServCounterQClass
DnsClass,
dnsServCounterQueryType
DnsType,
dnsServCounterQuerySource
INTEGER,
dnsServCounterTransport
INTEGER,
dnsServCounterNumbers
Counter,
dnsServCounterResponses
Counter
}
dnsServCounterOpCode OBJECT-TYPE
SYNTAX DnsOpCode -- INTEGER (0..15)
ACCESS read-only
STATUS mandatory
DESCRIPTION
34 Document Expiration Date - March 7, 1993 - Saperia
Internet Draft - DNS MIB - September 2, 1992
"The DNS OpCode which applies to this row of the table."
::= { dnsServCounterEntry 1 }
dnsServCounterQClass OBJECT-TYPE
SYNTAX DnsClass -- INTEGER (0..65535)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The QCLASS of the record type being counted in
this row the table."
::= { dnsServCounterEntry 2 }
dnsServCounterQueryType OBJECT-TYPE
SYNTAX DnsType -- INTEGER (0..65535)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The type of record which is being counted in this row
in the table."
::= { dnsServCounterEntry 3 }
dnsServCounterQuerySource OBJECT-TYPE
SYNTAX INTEGER {
self (1),
friend (2),
remote (3)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The source of the queries being counted in this row of
the table. A value of 1 indicates that the queries reported
on this row came from a resolver which resides on the same
system as the server. A value of 2 indicates the
queries originated from friends of the server - the
definition of friends is a locally defined matter. A
value of 3 indicates that the queries counted on this
row of the table came from systems which have not been
defined as friends."
Document Expiration Date - March 7, 1993 - Saperia 35
Internet Draft - DNS MIB - September 2, 1992
::= { dnsServCounterEntry 4 }
dnsServCounterTransport OBJECT-TYPE
SYNTAX INTEGER {
udp (1),
tcp (2),
other (3)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A value of 1 indicates that the queries reported on
this row were sent using UDP. A value of 2 indicates
that TCP was used. 3 is for any transport other than
TCP or UDP."
::= { dnsServCounterEntry 5 }
dnsServCounterNumbers OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of queries that have been recorded in this row
of the table."
::= { dnsServCounterEntry 6 }
dnsServCounterResponses OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of responses made by the server since
initialization for the type of query identified
on this row of the table."
::= { dnsServCounterEntry 7 }
36 Document Expiration Date - March 7, 1993 - Saperia
Internet Draft - DNS MIB - September 2, 1992
-- Records Group
-- The implementation of the Records Group is mandatory for all
-- systems which implement DNS server software functions.
-- Records Table
-- The records table contains information about records that the
-- the DNS software reads at initialization.
dnsRecTable OBJECT-TYPE
SYNTAX SEQUENCE OF DnsRecEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Configuration information about all RR records for the
DNS software."
::= { dnsRec 1 }
dnsRecEntry OBJECT-TYPE
SYNTAX DnsRecEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"This table contains Resource Record configuration
information."
INDEX { dnsRecZoneName, dnsRecZoneClass, dnsRecName,
dnsRecType, dnsRecIndex }
::= { dnsRecTable 1 }
Document Expiration Date - March 7, 1993 - Saperia 37
Internet Draft - DNS MIB - September 2, 1992
DnsRecEntry ::=
SEQUENCE {
dnsRecZoneName
DnsName,
dnsRecZoneClass
DnsClass,
dnsRecName
DnsName,
dnsRecType
DnsType,
dnsRecTTL
INTEGER,
dnsRecData
OCTET STRING,
dnsRecIndex
INTEGER,
dnsRecHits
Counter
}
dnsRecZoneName OBJECT-TYPE
SYNTAX DnsName -- OCTET STRING
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The DNS name of the zone which contains the authoritative
record described by this row of the table."
::= { dnsRecEntry 1 }
dnsRecZoneClass OBJECT-TYPE
SYNTAX DnsClass -- INTEGER (0..65535)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The class of the zone contained in this row. For
classes defined in RFC 1035, the values are the same."
::= { dnsRecEntry 2 }
38 Document Expiration Date - March 7, 1993 - Saperia
Internet Draft - DNS MIB - September 2, 1992
dnsRecName OBJECT-TYPE
SYNTAX DnsName -- OCTET STRING
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The name of the owner of the resource record described
in this row of the table. This will be the name of the
node, about which this resource record applies."
::= { dnsRecEntry 3 }
dnsRecType OBJECT-TYPE
SYNTAX DnsType -- INTEGER (0..65535)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The type of the record contained in this row. For
types defined in RFC 1035, the values are the same."
::= { dnsRecEntry 4 }
dnsRecTTL OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The default Time to Live value for this record which
is read in on initialization."
::= { dnsRecEntry 5 }
dnsRecData OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Variable length of octets. Type and Class information
provided in this row of the table along with this data
tell the management station how to interpret the Record.
For information on the details of DNS Resource Records
and their formats, see RFC1035."
::= { dnsRecEntry 6 }
Document Expiration Date - March 7, 1993 - Saperia 39
Internet Draft - DNS MIB - September 2, 1992
dnsRecIndex OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A unique index value which identifies each entry in
this table."
::= { dnsRecEntry 7 }
dnsRecHits OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of hits the server has had on the resource record
defined in this row of the table."
::= { dnsRecEntry 8 }
-- Resolver Cache Group
-- The implementation of the Resolver Cache Group is mandatory for
-- all systems which implement a cache.
dnsResCacheStatus OBJECT-TYPE
SYNTAX INTEGER {
enabled (1),
disabled (2)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Status of the resolver's cache.
ENABLED means that the use of the cache is allowed.
DISABLED means that the cache is not being used."
::= { dnsResCache 1 }
40 Document Expiration Date - March 7, 1993 - Saperia
Internet Draft - DNS MIB - September 2, 1992
dnsResCacheValid OBJECT-TYPE
SYNTAX DnsValid
ACCESS read-write
STATUS mandatory
DESCRIPTION
"Setting this to CLEAR deletes the resolver's entire
cache."
::= { dnsResCache 2 }
dnsResCacheMaxTTL OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-write
STATUS mandatory
DESCRIPTION
"Maximum Time-To-Live for RRs in this cache. If the
resolver does not implement a TTL ceiling, the value of
this field should be hexadecimal FFFFFFFF."
::= { dnsResCache 3 }
-- Resolver Cache Table
-- The Resolver Cache Table contains information about Resource
-- Records currently in the resolver's cache.
dnsResCacheTable OBJECT-TYPE
SYNTAX SEQUENCE OF DnsResCacheEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"The entire contents of the resolver's cache."
::= { dnsResCache 4 }
Document Expiration Date - March 7, 1993 - Saperia 41
Internet Draft - DNS MIB - September 2, 1992
dnsResCacheEntry OBJECT-TYPE
SYNTAX DnsResCacheEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"A single entry in the resolvers's cache."
INDEX { dnsResCacheRRName, dnsResCacheRRClass,
dnsResCacheRRType, dnsResCacheRRIndex }
::= { dnsResCacheTable 1 }
DnsResCacheEntry ::=
SEQUENCE {
dnsResCacheRRName
DnsName,
dnsResCacheRRClass
DnsClass,
dnsResCacheRRType
DnsType,
dnsResCacheRRTTL
DnsTime,
dnsResCacheRRElapsedTTL
DnsTime,
dnsResCacheRRSource
IpAddress,
dnsResCacheRRRData
OCTET STRING,
dnsResCacheRRValid
DnsValid,
dnsResCacheRRIndex
INTEGER
}
dnsResCacheRRName OBJECT-TYPE
SYNTAX DnsName -- OCTET STRING
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Owner name of the Resource Record in the cache which
is identified in this row of the table. As described
42 Document Expiration Date - March 7, 1993 - Saperia
Internet Draft - DNS MIB - September 2, 1992
in RFC1034, the owner of the record is the domain name
were the RR is found."
::= { dnsResCacheEntry 1 }
dnsResCacheRRClass OBJECT-TYPE
SYNTAX DnsClass -- INTEGER (0..65535)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"DNS class of the Resource Record in the cache which
is identified in this row of the table."
::= { dnsResCacheEntry 2 }
dnsResCacheRRType OBJECT-TYPE
SYNTAX DnsType -- INTEGER (0..65535)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"DNS type of the Resource Record in the cache which
is identified in this row of the table."
::= { dnsResCacheEntry 3 }
dnsResCacheRRTTL OBJECT-TYPE
SYNTAX DnsTime
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Time-To-Live of RR in DNS cache. This is the initial
TTL value which was received with the RR when it was
originally received."
::= { dnsResCacheEntry 4 }
dnsResCacheRRElapsedTTL OBJECT-TYPE
SYNTAX DnsTime
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Elapsed seconds since RR was received."
::= { dnsResCacheEntry 5 }
Document Expiration Date - March 7, 1993 - Saperia 43
Internet Draft - DNS MIB - September 2, 1992
dnsResCacheRRSource OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Host from which RR was received, 0.0.0.0 if unknown."
::= { dnsResCacheEntry 6 }
dnsResCacheRRRData OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
DESCRIPTION
"RDATA portion of a cached RR."
::= { dnsResCacheEntry 7 }
dnsResCacheRRValid OBJECT-TYPE
SYNTAX DnsValid
ACCESS read-write
STATUS mandatory
DESCRIPTION
"Set to CLEAR to delete this RR entry from the
cache table."
::= { dnsResCacheEntry 8 }
dnsResCacheRRIndex OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A unique index value which indentifies each entry in
this table."
::= { dnsResCacheEntry 9 }
44 Document Expiration Date - March 7, 1993 - Saperia
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-- Resolver Negative Cache Group
-- The implementation of the Resolver Negative Cache group is
-- mandatory for all systems which implement negative a negative
-- cache function.
dnsResNCacheStatus OBJECT-TYPE
SYNTAX INTEGER {
enabled (1),
disabled (2)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Status of the resolver's negative cache.
ENABLED means that the use of the negative cache is
allowed.
DISABLED means that the negative caching is not being
used."
::= { dnsResNCache 1 }
dnsResNCacheValid OBJECT-TYPE
SYNTAX DnsValid
ACCESS read-write
STATUS mandatory
DESCRIPTION
"Setting this to CLEAR deletes the resolver's entire
negative response cache."
::= { dnsResNCache 2 }
dnsResNCacheMaxTTL OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-write
STATUS mandatory
DESCRIPTION
"Maximum Time-To-Live for cached authoritative errors.
If the resolver does not implement a TTL ceiling, the
value of this field should be hexadecimal FFFFFFFF."
::= { dnsResNCache 3 }
Document Expiration Date - March 7, 1993 - Saperia 45
Internet Draft - DNS MIB - September 2, 1992
-- Resolver Negative Cache Table
-- The Resolver Negative Cache Table contains information about
-- Resource Records currently in the resolver's cache.
dnsResNCacheTable OBJECT-TYPE
SYNTAX SEQUENCE OF DnsResNCacheEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"The resolver's negative response cache."
::= { dnsResNCache 4 }
dnsResNCacheEntry OBJECT-TYPE
SYNTAX DnsResNCacheEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"An entry in the resolver's negative response cache."
INDEX { dnsResNCacheErrQName, dnsResNCacheErrQClass,
dnsResNCacheErrQType, dnsResNCacheIndex }
::= { dnsResNCacheTable 1 }
DnsResNCacheEntry ::=
SEQUENCE {
dnsResNCacheErrQName
DnsName,
dnsResNCacheErrQClass
DnsQClass,
dnsResNCacheErrQType
DnsQType,
dnsResNCacheErrTTL
DnsTime,
dnsResNCacheErrElapsedTTL
DnsTime,
dnsResNCacheErrSource
IpAddress,
dnsResNCacheErrCode
INTEGER,
dnsResNCacheErrValid
46 Document Expiration Date - March 7, 1993 - Saperia
Internet Draft - DNS MIB - September 2, 1992
DnsValid,
dnsResNCacheIndex
INTEGER
}
dnsResNCacheErrQName OBJECT-TYPE
SYNTAX DnsName -- OCTET STRING
ACCESS read-only
STATUS mandatory
DESCRIPTION
"QNAME associated with a cached authoritative error."
::= { dnsResNCacheEntry 1 }
dnsResNCacheErrQClass OBJECT-TYPE
SYNTAX DnsQClass -- INTEGER (0..65535)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"DNS QCLASS associated with a cached authoritative error."
::= { dnsResNCacheEntry 2 }
dnsResNCacheErrQType OBJECT-TYPE
SYNTAX DnsQType -- INTEGER (0..65535)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"DNS QTYPE associated with a cached authoritative error."
::= { dnsResNCacheEntry 3 }
dnsResNCacheErrTTL OBJECT-TYPE
SYNTAX DnsTime
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Time-To-Live of a cached authoritative error.
This should be the TTL as copied from the MINIMUM
field of the SOA that accompanied the authoritative
error."
::= { dnsResNCacheEntry 4 }
Document Expiration Date - March 7, 1993 - Saperia 47
Internet Draft - DNS MIB - September 2, 1992
dnsResNCacheErrElapsedTTL OBJECT-TYPE
SYNTAX DnsTime
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Elapsed seconds since authoritative error was received."
::= { dnsResNCacheEntry 5 }
dnsResNCacheErrSource OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Host which sent the authoritative error, 0.0.0.0 if
unknown."
::= { dnsResNCacheEntry 6 }
dnsResNCacheErrCode OBJECT-TYPE
SYNTAX INTEGER {
nonexistantName (1),
noData (2),
other (3)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The authoritative error that has been cached.
NonexistantName indicates a cached authoritative name
error. NoData indicates a cached authoritative
response with no error and no relevant data."
::= { dnsResNCacheEntry 7 }
dnsResNCacheErrValid OBJECT-TYPE
SYNTAX DnsValid
ACCESS read-write
STATUS mandatory
DESCRIPTION
"Set to CLEAR to delete this cached error."
::= { dnsResNCacheEntry 8 }
48 Document Expiration Date - March 7, 1993 - Saperia
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dnsResNCacheIndex OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A unique index value which indentifies each entry in
the Negative Cache table."
::= { dnsResNCacheEntry 9 }
-- Resolver Statistics Group
-- The implementation of the Resolver Statistics Group is
-- mandatory for all systems which implement resolver functions.
dnsResStatGoodCaches OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of RRs the resolver has cached successfully."
::= { dnsResStats 1 }
dnsResStatBadCaches OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of RRs the resolver has refused to cache
because they appear to be dangerous or irrelevant.
Eg, RRs with suspiciously high TTLs, unsolicited root
information, or that just don't appear to be relevant
to the question the resolver asked."
::= { dnsResStats 2 }
Document Expiration Date - March 7, 1993 - Saperia 49
Internet Draft - DNS MIB - September 2, 1992
dnsResStatGoodNCaches OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of authoritative errors the resolver has cached
successfully."
::= { dnsResStats 3 }
dnsResStatBadNCaches OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Number of authoritative errors the resolver would
have liked to cache but was unable to because the
appropriate SOA RR was not supplied or looked
suspicious."
::= { dnsResStats 4 }
-- Lame Delegation Table
dnsResLameDelegationTable OBJECT-TYPE
SYNTAX SEQUENCE OF DnsResLameDelegationEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Table of name servers returning lame delegations."
::= { dnsResStats 5 }
dnsResLameDelegationEntry OBJECT-TYPE
SYNTAX DnsResLameDelegationEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Entry in lame delegation table."
INDEX { dnsResLameDelegationSource,
dnsResLameDelegationName,
dnsResLameDelegationClass }
::= { dnsResLameDelegationTable 1 }
50 Document Expiration Date - March 7, 1993 - Saperia
Internet Draft - DNS MIB - September 2, 1992
DnsResLameDelegationEntry ::=
SEQUENCE {
dnsResLameDelegationSource
IpAddress,
dnsResLameDelegationName
DnsName,
dnsResLameDelegationClass
DnsClass,
dnsResLameCountDelegations
Counter,
dnsResLameDelegationValid
DnsValid
}
dnsResLameDelegationSource OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Source of lame delegation."
::= { dnsResLameDelegationEntry 1 }
dnsResLameDelegationName OBJECT-TYPE
SYNTAX DnsName
ACCESS read-only
STATUS mandatory
DESCRIPTION
"DNS name for which lame delegation was received."
::= { dnsResLameDelegationEntry 2 }
dnsResLameDelegationClass OBJECT-TYPE
SYNTAX DnsClass -- INTEGER (0..65535)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"DNS class of received lame delegation."
::= { dnsResLameDelegationEntry 3 }
Document Expiration Date - March 7, 1993 - Saperia 51
Internet Draft - DNS MIB - September 2, 1992
dnsResLameCountDelegations OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"How many times this lame delegation has been received."
::= { dnsResLameDelegationEntry 4 }
dnsResLameDelegationValid OBJECT-TYPE
SYNTAX DnsValid
ACCESS read-write
STATUS mandatory
DESCRIPTION
"Set to CLEAR to delete this lame delegation entry."
::= { dnsResLameDelegationEntry 5 }
-- Server Management Group
-- The implementation of the Server Management Group is mandatory
-- for all systems which implement DNS server software functions.
dnsMgmtVersion OBJECT-TYPE
SYNTAX DisplayString
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Name and version information for name server software."
::= { dnsMgmt 1 }
52 Document Expiration Date - March 7, 1993 - Saperia
Internet Draft - DNS MIB - September 2, 1992
dnsMgmtReload OBJECT-TYPE
SYNTAX INTEGER {
reload (1),
other (2)
}
ACCESS read-write
STATUS mandatory
DESCRIPTION
"This read-write variable is used to force a database
reload with a restart of the name server process
When set to the values above, the following actions
are taken: reload - Reload and restart name server
process(s). Other is returned when a read operation
is performed on this object."
::= { dnsMgmt 2 }
-- DNS Managment Zone Configuration Table
dnsMgmtZoneTable OBJECT-TYPE
SYNTAX SEQUENCE OF DnsMgmtZoneEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Table of zones for which this name server is
configured. If name server doesn't load any zones,
this table is empty."
::= { dnsMgmt 3 }
dnsMgmtZoneEntry OBJECT-TYPE
SYNTAX DnsMgmtZoneEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"An entry in the name server zone table."
INDEX { dnsMgmtZoneMName,
dnsMgmtZoneClass }
::= { dnsMgmtZoneTable 1 }
Document Expiration Date - March 7, 1993 - Saperia 53
Internet Draft - DNS MIB - September 2, 1992
DnsMgmtZoneEntry ::=
SEQUENCE {
dnsMgmtZoneMName
DnsName,
dnsMgmtZoneRName
DnsName,
dnsMgmtZoneLoad
DisplayString,
dnsMgmtZoneDate
DnsDate,
dnsMgmtZoneClass
DnsClass,
dnsMgmtZoneLastReload
DnsTime,
dnsMgmtZoneLastReloadAttempt
DnsTime,
dnsMgmtZoneLastSource
IpAddress,
dnsMgmtZoneSerial
INTEGER,
dnsMgmtZoneRefresh
DnsTime,
dnsMgmtZoneRetry
DnsTime,
dnsMgmtZoneExpire
DnsTime,
dnsMgmtZoneMin
INTEGER,
dnsMgmtZoneValid
DnsValid
}
dnsMgmtZoneMName OBJECT-TYPE
SYNTAX DnsName
ACCESS read-only
STATUS mandatory
DESCRIPTION
"DNS name of the server that was the original or
primary source of the data for this zone - see RFC
54 Document Expiration Date - March 7, 1993 - Saperia
Internet Draft - DNS MIB - September 2, 1992
1035 for details of teh SOA RDATA format.."
::= { dnsMgmtZoneEntry 1 }
dnsMgmtZoneRName OBJECT-TYPE
SYNTAX DnsName
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The mailbox address of the person who is responsible
for the administration of the zone specified in this
row of the table. Note that the format of the address
follows the domain-name format as in
postman.server.acme.com."
::= { dnsMgmtZoneEntry 2 }
dnsMgmtZoneLoad OBJECT-TYPE
SYNTAX DisplayString
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This is the name of the file that is read in for the
initial load of zone information on startup."
::= { dnsMgmtZoneEntry 3 }
dnsMgmtZoneDate OBJECT-TYPE
SYNTAX DnsDate -- DisplayString
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This is the date that the information found in
dnsMgmtZoneLoad was last changed."
::= { dnsMgmtZoneEntry 4 }
dnsMgmtZoneClass OBJECT-TYPE
SYNTAX DnsClass -- INTEGER (0..65535)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"DNS class of the RRs in this zone."
::= { dnsMgmtZoneEntry 5 }
Document Expiration Date - March 7, 1993 - Saperia 55
Internet Draft - DNS MIB - September 2, 1992
dnsMgmtZoneLastReload OBJECT-TYPE
SYNTAX DnsTime
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Elapsed seconds since last successful reload of
this zone."
::= { dnsMgmtZoneEntry 6 }
dnsMgmtZoneLastReloadAttempt OBJECT-TYPE
SYNTAX DnsTime
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Elapsed seconds since last attempted reload of
this zone."
::= { dnsMgmtZoneEntry 7 }
dnsMgmtZoneLastSource OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-only
STATUS mandatory
DESCRIPTION
"IP address of host from which most recent reload of
this zone was received. If unknown or irrelevant,
value should be 0.0.0.0."
::= { dnsMgmtZoneEntry 8 }
dnsMgmtZoneSerial OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The current serial number of the SOA record in the
file specified by dnsServMgmtZoneLoad."
::= { dnsMgmtZoneEntry 9 }
56 Document Expiration Date - March 7, 1993 - Saperia
Internet Draft - DNS MIB - September 2, 1992
dnsMgmtZoneRefresh OBJECT-TYPE
SYNTAX DnsTime
ACCESS read-only
STATUS mandatory
DESCRIPTION
"REFRESH interval for zone. This is the REFRESH field
of the zone's SOA RR, if known, otherwise whatever
value the name server is using in place of the SOA
REFRESH value."
::= { dnsMgmtZoneEntry 10 }
dnsMgmtZoneRetry OBJECT-TYPE
SYNTAX DnsTime
ACCESS read-only
STATUS mandatory
DESCRIPTION
"RETRY interval for zone. This is the RETRY field of
the zone's SOA RR, if known, otherwise whatever value
the name server is using in place of the SOA RETRY
value."
::= { dnsMgmtZoneEntry 11 }
dnsMgmtZoneExpire OBJECT-TYPE
SYNTAX DnsTime
ACCESS read-only
STATUS mandatory
DESCRIPTION
"EXPIRE interval for zone. This is the EXPIRE field of
the zone's SOA RR, if known, otherwise whatever value
the name server is using in place of the SOA EXPIRE
value."
::= { dnsMgmtZoneEntry 12 }
Document Expiration Date - March 7, 1993 - Saperia 57
Internet Draft - DNS MIB - September 2, 1992
dnsMgmtZoneMin OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-write
STATUS mandatory
DESCRIPTION
"This value is the TTL field which will be exported
with any RR from this zone and is specified in the SOA
record identified by dnsServMgmtZoneLoad."
::= { dnsMgmtZoneEntry 13 }
dnsMgmtZoneValid OBJECT-TYPE
SYNTAX DnsValid
ACCESS write-only
STATUS mandatory
DESCRIPTION
"Set to CLEAR to delete this zone entry."
::= { dnsMgmtZoneEntry 14 }
-- DNS Management Server Table
dnsMgmtServTable OBJECT-TYPE
SYNTAX SEQUENCE OF DnsMgmtServEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Table of IP addresses of name server hosts from which
this name server might obtain particular zones.
Typically this indicates the addresses of the primary
name servers of zones for which the SNMP agent's host
is a secondary name server."
::= { dnsMgmt 4 }
58 Document Expiration Date - March 7, 1993 - Saperia
Internet Draft - DNS MIB - September 2, 1992
dnsMgmtServEntry OBJECT-TYPE
SYNTAX DnsMgmtServEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"An entry in the name server server (sic) table."
INDEX { dnsMgmtServName,
dnsMgmtServClass,
dnsMgmtServAddr }
::= { dnsMgmtServTable 1 }
DnsMgmtServEntry ::=
SEQUENCE {
dnsMgmtServName
DnsName,
dnsMgmtServClass
DnsClass,
dnsMgmtServAddr
IpAddress
}
dnsMgmtServName OBJECT-TYPE
SYNTAX DnsName
ACCESS read-only
STATUS mandatory
DESCRIPTION
"DNS name of the zone to which this entry applies."
::= { dnsMgmtServEntry 1 }
dnsMgmtServClass OBJECT-TYPE
SYNTAX DnsClass -- INTEGER (0..65535)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"DNS class of zone to which this entry applies."
::= { dnsMgmtServEntry 2 }
Document Expiration Date - March 7, 1993 - Saperia 59
Internet Draft - DNS MIB - September 2, 1992
dnsMgmtServAddr OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-only
STATUS mandatory
DESCRIPTION
"IP address of name server host from which this zone
might be obtainable."
::= { dnsMgmtServEntry 3 }
END
5 Acknowledgements
This document is the result of work undertaken the by DNS work-
ing group. Special thanks are due to Rob Austein of Epilogue
Technology for the major contributions he has made in the orga-
nization of the MIB as well as authoring many of the objects.
In addition, the contributions and comments of the following
members are also specially acknowledged:
Win Treese, Digital Equipment Corporation
Philip Almquist, Computer Communication consultant
Joe Peck, Digital Equipment Corporation
6 References
J. Reynolds and J. Postel, Assigned Numbers. Internet Working
Group Request for Comments 1010. Network Information Center, SRI
International, Menlo Park, California, (May, 1987).
M. Stahl, Domain Administrators Guide. Internet Working Group
Request for Comments 1032. Network Information Center, SRI
International, Menlo Park, California, (November, 1987).
60 Document Expiration Date - March 7, 1993 - Saperia
Internet Draft - DNS MIB - September 2, 1992
M. Lottor, Domain Administrators Operations Guide, Internet
Working Group Request for Comments 1033. Network Information
Center, SRI International, Menlo Park, California, (November,
1987).
P. Mockapetris, Domain Names - Concepts and Facilities, Internet
Working Group Request for Comments 1034. Network Information
Center, SRI International, Menlo Park, California, (November,
1987).
P. Mockapetris, Domain Names - Implementation and Specifica-
tion, Internet Working Group Request for Comments 1035. Network
Information Center, SRI International, Menlo Park, California,
(November, 1987).
V. Cerf, IAB Recommendations for the Development of Internet
Network Management Standards. Internet Working Group Request for
Comments 1052. Network Information Center, SRI International,
Menlo Park, California, (April, 1988).
R. Braden (editor) Requirements for Internet Hosts-Application
and Support, Internet Working Group Request for Comments 1123.
Network Information Center, SRI International,Menlo Park, Cali-
fornia, (October, 1989).
M.T. Rose and K. McCloghrie, Structure and Identification of
Management Information for TCP/IP-based internets, Internet
Working Group Request for Comments 1155. Network Information
Center, SRI International, Menlo Park, California, (May, 1990).
K. McCloghrie and M.T. Rose, Management Information Base for
Network Management of TCP/IP-based internets, Internet Working
Group Request for Comments 1156, Network Information Center, SRI
International, Menlo Park, California, (May, 1990).
J.D. Case, M.S. Fedor, M.L. Schoffstall, and J.R. Davin, Simple
Network Management Protocol, Internet Working Group Request for
Comments 1157. Network Information Center, SRI International,
Menlo Park, California, (May, 1990).
Document Expiration Date - March 7, 1993 - Saperia 61
Internet Draft - DNS MIB - September 2, 1992
M.T. Rose, The Open Book, A Practical Perspective on OSI. Pren-
tice Hall, Englewood Cliffs, New Jersey, (1990).
M.T. Rose and K. McCloghrie (editors) Concise MIB Definitions,
Internet Working Group Request for Comments 1212, Network In-
formation Center, SRI International, Menlo Park, California,
(March, 1991).
K. McCloghrie and M.T. Rose (editors), Management Information
Base for Network Management of TCP/IP-based internets: MIB-
II, Internet Working Group Request for Comments 1213. Network
Information Center, SRI International, Menlo Park, California,
(March, 1991).
62 Document Expiration Date - March 7, 1993 - Saperia
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