📄 rfc1611.txt
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DnsOpCode ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "This textual convention is used to represent the DNS OPCODE values used in the header section of DNS messages. Existing standard OPCODE values are listed in the DNS specifications." REFERENCE "RFC-1035 section 4.1.1." SYNTAX INTEGER (0..15) DnsRespCode ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "This data type is used to represent the DNS RCODE value in DNS response messages. Existing standard RCODE values are listed in the DNS specifications." REFERENCE "RFC-1035 section 4.1.1." SYNTAX INTEGER (0..15)Austein & Saperia [Page 8]RFC 1611 DNS Server MIB Extensions May 1994 -- Server Configuration Group dnsServConfigImplementIdent OBJECT-TYPE SYNTAX DisplayString MAX-ACCESS read-only STATUS current DESCRIPTION "The implementation identification string for the DNS server software in use on the system, for example; `FNS-2.1'" ::= { dnsServConfig 1 } dnsServConfigRecurs OBJECT-TYPE SYNTAX INTEGER { available(1), restricted(2), unavailable(3) } MAX-ACCESS read-write STATUS current DESCRIPTION "This represents the recursion services offered by this name server. The values that can be read or written are: available(1) - performs recursion on requests from clients. restricted(2) - recursion is performed on requests only from certain clients, for example; clients on an access control list. unavailable(3) - recursion is not available." ::= { dnsServConfig 2 } dnsServConfigUpTime OBJECT-TYPE SYNTAX DnsTime MAX-ACCESS read-only STATUS current DESCRIPTION "If the server has a persistent state (e.g., a process), this value will be the time elapsed since it started. For software without persistant state, this value will be zero." ::= { dnsServConfig 3 } dnsServConfigResetTime OBJECT-TYPE SYNTAX DnsTime MAX-ACCESS read-only STATUS currentAustein & Saperia [Page 9]RFC 1611 DNS Server MIB Extensions May 1994 DESCRIPTION "If the server has a persistent state (e.g., a process) and supports a `reset' operation (e.g., can be told to re-read configuration files), this value will be the time elapsed since the last time the name server was `reset.' For software that does not have persistence or does not support a `reset' operation, this value will be zero." ::= { dnsServConfig 4 } dnsServConfigReset OBJECT-TYPE SYNTAX INTEGER { other(1), reset(2), initializing(3), running(4) } MAX-ACCESS read-write STATUS current DESCRIPTION "Status/action object to reinitialize any persistant name server state. When set to reset(2), any persistant name server state (such as a process) is reinitialized as if the name server had just been started. This value will never be returned by a read operation. When read, one of the following values will be returned: other(1) - server in some unknown state; initializing(3) - server (re)initializing; running(4) - server currently running." ::= { dnsServConfig 5 } -- Server Counter Group dnsServCounterAuthAns OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of queries which were authoritatively answered." ::= { dnsServCounter 2 } dnsServCounterAuthNoNames OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of queries for which `authoritative no such name' responses were made." ::= { dnsServCounter 3 }Austein & Saperia [Page 10]RFC 1611 DNS Server MIB Extensions May 1994 dnsServCounterAuthNoDataResps OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of queries for which `authoritative no such data' (empty answer) responses were made." ::= { dnsServCounter 4 } dnsServCounterNonAuthDatas OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of queries which were non-authoritatively answered (cached data)." ::= { dnsServCounter 5 } dnsServCounterNonAuthNoDatas OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of queries which were non-authoritatively answered with no data (empty answer)." ::= { dnsServCounter 6 } dnsServCounterReferrals OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of requests that were referred to other servers." ::= { dnsServCounter 7 } dnsServCounterErrors OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of requests the server has processed that were answered with errors (RCODE values other than 0 and 3)." REFERENCE "RFC-1035 section 4.1.1." ::= { dnsServCounter 8 } dnsServCounterRelNames OBJECT-TYPE SYNTAX Counter32Austein & Saperia [Page 11]RFC 1611 DNS Server MIB Extensions May 1994 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of requests received by the server for names that are only 1 label long (text form - no internal dots)." ::= { dnsServCounter 9 } dnsServCounterReqRefusals OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of DNS requests refused by the server." ::= { dnsServCounter 10 } dnsServCounterReqUnparses OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of requests received which were unparseable." ::= { dnsServCounter 11 } dnsServCounterOtherErrors OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of requests which were aborted for other (local) server errors." ::= { dnsServCounter 12 } -- DNS Server Counter Table dnsServCounterTable OBJECT-TYPE SYNTAX SEQUENCE OF DnsServCounterEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Counter information broken down by DNS class and type." ::= { dnsServCounter 13 } dnsServCounterEntry OBJECT-TYPE SYNTAX DnsServCounterEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains count information for each DNS classAustein & Saperia [Page 12]RFC 1611 DNS Server MIB Extensions May 1994 and type value 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 of queries over UDP for records with type value `A' which came to this server. In order to prevent an uncontrolled expansion of rows in the table; if dnsServCounterRequests is 0 and dnsServCounterResponses is 0, then the row does not exist and `no such' is returned when the agent is queried for such instances." INDEX { dnsServCounterOpCode, dnsServCounterQClass, dnsServCounterQType, dnsServCounterTransport } ::= { dnsServCounterTable 1 } DnsServCounterEntry ::= SEQUENCE { dnsServCounterOpCode DnsOpCode, dnsServCounterQClass DnsClass, dnsServCounterQType DnsType, dnsServCounterTransport INTEGER, dnsServCounterRequests Counter32, dnsServCounterResponses Counter32 } dnsServCounterOpCode OBJECT-TYPE SYNTAX DnsOpCode MAX-ACCESS not-accessible STATUS current DESCRIPTION "The DNS OPCODE being counted in this row of the table." ::= { dnsServCounterEntry 1 } dnsServCounterQClass OBJECT-TYPE SYNTAX DnsClass MAX-ACCESS not-accessible STATUS current DESCRIPTION "The class of record being counted in this row of the table." ::= { dnsServCounterEntry 2 }Austein & Saperia [Page 13]RFC 1611 DNS Server MIB Extensions May 1994 dnsServCounterQType OBJECT-TYPE SYNTAX DnsType MAX-ACCESS not-accessible STATUS current DESCRIPTION "The type of record which is being counted in this row in the table." ::= { dnsServCounterEntry 3 } dnsServCounterTransport OBJECT-TYPE SYNTAX INTEGER { udp(1), tcp(2), other(3) } MAX-ACCESS not-accessible STATUS current DESCRIPTION "A value of udp(1) indicates that the queries reported on this row were sent using UDP. A value of tcp(2) indicates that the queries reported on this row were sent using TCP. A value of other(3) indicates that the queries reported on this row were sent using a transport that was neither TCP nor UDP." ::= { dnsServCounterEntry 4 } dnsServCounterRequests OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of requests (queries) that have been recorded in this row of the table." ::= { dnsServCounterEntry 5 } dnsServCounterResponses OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of responses made by the server since initialization for the kind of query identified on this row of the table." ::= { dnsServCounterEntry 6 }Austein & Saperia [Page 14]RFC 1611 DNS Server MIB Extensions May 1994 -- Server Optional Counter Group -- The Server Optional Counter Group is intended for those systems -- which make distinctions between the different sources of the DNS -- queries as defined below. -- -- Objects in this group are implemented on servers which distinguish -- between queries which originate from the same host as the server, -- queries from one of an arbitrary group of hosts that are on an -- access list defined by the server, and queries from hosts that do -- not fit either of these descriptions. -- -- The objects found in the Server Counter group are totals. Thus if -- one wanted to identify, for example, the number of queries from -- `remote' hosts which have been given authoritative answers, one -- would subtract the current values of ServOptCounterFriendsAuthAns -- and ServOptCounterSelfAuthAns from servCounterAuthAns. -- -- 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 query -- came from a friend. What constitutes an `access list' is -- implementation dependent and could be as simple as a rule that all -- hosts on the same IP network as the DNS server are classed -- `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.' dnsServOptCounterSelfAuthAns OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of requests the server has processed which originated from a resolver on the same host for whichAustein & Saperia [Page 15]
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