HTTP/1.1 200 OK Date: Tue, 09 Apr 2002 07:36:19 GMT Server: Apache/1.3.20 (Unix) Last-Modified: Thu, 15 Feb 1996 23:00:00 GMT ETag: "305067-fa30-3123baf0" Accept-Ranges: bytes Content-Length: 64048 Connection: close Content-Type: text/plain Internet Engineering Task Force Nevil Brownlee INTERNET-DRAFT The University of Auckland Feb 1996 Traffic Flow Measurement: Meter MIB 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. This Internet Draft is a product of the Realtime Traffic Flow Measurement Working Group of the IETF. Internet Drafts are draft documents valid for a maximum of six months. Internet Drafts may be updated, replaced, or obsoleted by other documents at any time. It is not appropriate to use Internet Drafts as reference material or to cite them other than as a "working draft" or "work in progress." Please check the I-D abstract listing contained in the internet-drafts Shadow Directories on nic.ddn.mil, nnsc.nsf.net, nic.nordu.net, ftp.nisc.sri.com or munnari.oz.au to learn the current status of this or any other Internet Draft. Abstract This memo defines an experimental portion of the Management Information Base (MIB) for use with network management protocols in TCP/IP-based internets. In particular, this memo defines managed objects used for obtaining traffic flow information from network traffic meters. Contents 1 The Network Management Framework 1 2 Objects 2 2.1 Format of Definitions . . . . . . . . . . . . . . . . . . . . 3 3 Overview 3 3.1 Scope of Definitions, Textual Conventions . . . . . . . . . . 3 3.2 Usage of the MIB variables . . . . . . . . . . . . . . . . . . 4 INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 4 Definitions 5 5 Acknowledgements 33 6 References 33 7 Security Considerations 34 8 Author's Address 34 1 The Network Management Framework The Internet-standard Network Management Framework consists of three components. They are: RFC 1155 defines the SMI, the mechanisms used for describing and naming objects for the purpose of management. RFC 1212 defines a more concise description mechanism, which is wholly consistent with the SMI. RFC 1156 defines MIB-I, the core set of managed objects for the Internet suite of protocols. RFC 1213 [1] defines MIB-II, an evolution of MIB-I based on implementation experience and new operational requirements. RFC 1157 defines the SNMP, the protocol used for network access to managed objects. RFC 1442 [2] defines the SMI for version 2 of the Simple Network Management Protocol. RFCs 1443 and 1444 [3,4] define Textual Conventions and Conformance Statements for version 2 of the Simple Network Management Protocol. RFC 1452 [5] describes how versions 1 and 2 of the Simple Network Management Protocol should coexist. The Framework permits new objects to be defined for the purpose of experimentation and evaluation. Nevil Brownlee [Page 2] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 2 Objects Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. Objects in the MIB are defined using the subset of Abstract Syntax Notation One (ASN.1) [6] defined in the SMI. In particular, each object has a name, a syntax, and an encoding. The name is an object identifier, an administratively assigned name, which specifies an object type. The object type together with an object instance serves to uniquely identify a specific instantiation of the object. For human convenience, we often use a textual string, termed the OBJECT DESCRIPTOR, to also refer to the object type. The syntax of an object type defines the abstract data structure corresponding to that object type. The ASN.1 language is used for this purpose. However, the SMI [2] purposely restricts the ASN.1 constructs which may be used. These restrictions are explicitly made for simplicity. The encoding of an object type is simply how that object type is represented using the object type's syntax. Implicitly tied to the notion of an object type's syntax and encoding is how the object type is represented when being transmitted on the network. The SMI specifies the use of the basic encoding rules of ASN.1 [7], subject to the additional requirements imposed by the SNMP. 2.1 Format of Definitions Section 4 contains contains the specification of all object types contained in this MIB module. These object types are defined using the conventions defined in [2] and [3]. 3 Overview Traffic Flow Measurement seeks to provide a well-defined method for gathering traffic flow information from networks and internetworks. The background for this is given in "Traffic Flow Measurement: Background" [8]. The Realtime Traffic Flow Measurement (rtfm) Working Group has produced a measurement architecture to achieve it; this is documented in "Traffic Flow Measurement: Architecture" [9]. The architecture defines three entities: Nevil Brownlee [Page 3] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 - METERS, which observe network traffic flows and build up a table of flow data records for them, - METER REAERS, which collect traffic flow data from meters, and - MANAGERS, which oversee the operation of meters and meter readers. This memo defines the SNMP management information for a Traffic Flow Meter (TFM). It documents the earlier work of the Internet Accounting Working Group, and is intended to provide a starting point for the Realtime Traffic Flow Measurement Working Group. 3.1 Scope of Definitions, Textual Conventions All objects defined in this memo are registered in a single subtree within the mib-2 namespace [1,2], and are for use in network devices which may perform a PDU forwarding or monitoring function. For these devices, the value of the ifSpecific variable in the MIB-II [1] has the OBJECT IDENTIFIER value: flowMIB OBJECT IDENTIFIER ::= mib-2 40 as defined below. The RTFM Meter MIB was first produced and tested using SNMPv1. It has been converted into SNMPv2 following the guidelines in RFC 1452 [5]. 3.2 Usage of the MIB variables The MIB breaks into four parts - control, flows, rules and conformance statements. The rules implement the minumum set of packet-matching actions, as set out in the "Traffic Flow Measurment: Architecture" document [9]. In addition they provide for BASIC-style subroutines, allowing a network manager to dramatically reduce the number of rules required to monitor a big network. Traffic flows are identified by a set of attributes for each of its end-points. Attributes include network addresses for each layer of the network protocol stack, and 'subscriber ids,' which may be used to identify an accountable entity for the flow. The conformance statements are set out as defined in [4]. They explain what must be implemented in a meter which claims to conform to this MIB. Nevil Brownlee [Page 4] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 To retrieve flow data one could simply do a linear scan of the flow table. This would certainly work, but would require a lot of protocol exchanges. To reduce the overhead in retrieving flow data, there are two 'indexes' into the flow table. The 'activity' index makes it easy to find those flows which have been active at or after a given time; this allows retrieval of flow data without using an opaque object. The other index is the flowColumnActivityTable, which is (logically) a three-dimensional array, subscripted by flow attribute, activity time and starting flow number. This allows a meter reader to retrieve (in an opaque object) data for a column of the flow table with a minimum of SNMP overhead. An attempt has been made to include a full ASN.1 definition of the flowColumnActivityData object. One aspect of data collection which needs emphasis is that all the MIB variables are set up to allow multiple independent colletors to work properly, i.e. the flow table indexes are stateless. An alternative approach would have been to 'snapshot' the flow table, which would mean that the meter readers would have to be synchronized. The stateless approach does mean that two meter readers will never return exactly the same set of traffic counts, but over long periods (e.g. 15-minute collections over a day) the discrepancies are acceptable. If one really needs a snapshot, this can be achieved by switching to an identical rule set with a different RuleSet number, hence asynchronous collections may be regarded as a useful generalisation of synchronised ones. The control variables are the minimum set required for a meter reader. Their number has been whittled down as experience has been gained with the MIB implementation. 4 Definitions FLOW-METER-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, OBJECT-TYPE, Counter32, Integer32, TimeTicks, IpAddress FROM SNMPv2-SMI TEXTUAL-CONVENTION, RowStatus, TimeStamp FROM SNMPv2-TC OBJECT-GROUP, MODULE-COMPLIANCE FROM SNMPv2-CONF mib-2, ifIndex FROM RFC1213-MIB; flowMIB MODULE-IDENTITY LAST-UPDATED "9602080845Z" ORGANIZATION "IETF Realtime Traffic Flow Measurement Working Group" Nevil Brownlee [Page 5] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 CONTACT-INFO "Nevil Brownlee, The University of Auckland Email: n.brownlee@auckland.ac.nz" DESCRIPTION "MIB for the RTFM Traffic Flow Meter." ::= { mib-2 40 } flowControl OBJECT IDENTIFIER ::= { flowMIB 1 } flowData OBJECT IDENTIFIER ::= { flowMIB 2 } flowRules OBJECT IDENTIFIER ::= { flowMIB 3 } flowMIBConformance OBJECT IDENTIFIER ::= { flowMIB 4 } -- Textual Conventions AddressType ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Indicates the type of an adjacent address or peer address. The type of a transport address will depend on the peer address type." SYNTAX INTEGER { ethernetAddress(1), ipAddress(2), nsapAddress(3), idprAddress(4), decnetAddress(5), ipxnetAddress(6), ethertalkAddress(7), fddiAddress(8), tokenringAddress(9) } AdjacentAddress ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Specifies the value of an adjacent address for various physical media. Address format depends on the actual media, as follows: Ethernet: ethernetAddress(1) 6-octet 802.3 MAC address in 'canonical' order FDDI: fddiAddress(3) FddiMACLongAddress, i.e. a 6-octet MAC address in 'canonical' order (defined in the FDDI MIB [10]) Token Ring: tokenringAddress(4) Nevil Brownlee [Page 6] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 6-octet 802.5 MAC address in 'canonical' order " SYNTAX OCTET STRING (SIZE (6)) PeerAddress ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Specifies the value of a peer address for various network protocols. Address format depends on the actual protocol, as follows: IP: ipAddress(2) 4-octet IpAddress (defined in the SNMPv2 SMI [2]) CLNS: nsapAddress(3) NsapAddress (defined in the SNMPv2 SMI [2]) IDRP: idprAddress(4) InterDomain Routing Protocol (a version of BGP) DECnet: decnetAddress(5) 1-octet Area number (in low-order six bits), 2-octet Host number (in low-order ten bits) Novell: ipxnetAddress(6) 4-octet Network number, 6-octet Host number (MAC address) AppleTalk: ethertalkAddress(7) 2-octet Network number (sixteen bits), 1-octet Host number (eight bits) " SYNTAX OCTET STRING (SIZE (3..20)) TransportAddress ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Specifies the value of a transport address for various network protocols. Format as follows: IP: 2-octet UDP or TCP port number Other protocols: 2-octet port number " SYNTAX OCTET STRING (SIZE (2)) RuleAddress ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION Nevil Brownlee [Page 7] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 "Specifies the value of an address. Is a superset of AdjacentAddress, PeerAddress and TransportAddress." SYNTAX OCTET STRING (SIZE (2..20)) FlowAttributeNumber ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Uniquely identifies an attribute within a flow data record." SYNTAX INTEGER { flowIndex(1), flowStatus(2), sourceInterface(3), -- Source Address sourceAdjacentType(4), sourceAdjacentAddress(5), sourceAdjacentMask(6), sourcePeerType(7), sourcePeerAddress(8), sourcePeerMask(9), sourceTransType(10), sourceTransAddress(11), sourceTransMask(12), destInterface(13), -- Dest Address destAdjacentType(14), destAdjacentAddress(15), destAdjacentMask(16), destPeerType(17), destPeerAddress(18), destPeerMask(19), destTransType(20), destTransAddress(21), destTransMask(22), pduScale(23), -- Rule Set attributes octetScale(24), ruleSet(25), toOctets(26), -- Source-to-Dest toPDUs(27), fromOctets(28), -- Dest-to-Source fromPDUs(29), firstTime(30), -- Activity times lastActiveTime(31), sourceSubscriberID(32), -- Subscriber ID destSubscriberID(33), sessionID(34), sourceClass(35), -- Computed attributes destClass(36), flowClass(37), sourceKind(38), destKind(39), flowKind(40) } RuleAttributeNumber ::= TEXTUAL-CONVENTION Nevil Brownlee [Page 8] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 STATUS current DESCRIPTION "Uniquely identifies an attribute which may be tested in a rule. These include attributes whose values come directly from the flow's packets and the five 'meter' variables used to hold an AttributeValue. Attributes derived from the rules - e.g. address masks - may not be tested." SYNTAX INTEGER { null(0), sourceInterface(3), -- Source Address sourceAdjacentType(4), sourceAdjacentAddress(5), sourcePeerType(7), sourcePeerAddress(8), sourceTransType(10), sourceTransAddress(11), destInterface(13), -- Dest Address destAdjacentType(14), destAdjacentAddress(15), destPeerType(17), destPeerAddress(18), destTransType(20), destTransAddress(21), sourceSubscriberID(32), -- Subscriber ID destSubscriberID(33), sessionID(34), v1(51), -- Meter variables v2(52), v3(53), v4(54), v5(55) } TimeFilter ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Used as an index to a table. A TimeFilter variable allows a GetNext or GetBulk request to find rows in a table for which the TimeFilter index variable is greater than or equal to a specified value. For example, a meter reader could use the FlowActivityTable to find the subscripts for all rows in the flow table which have been active at or since a specified time. More details on TimeFilter variables, their implementation and use can be found in the RMON2 MIB [11]." SYNTAX TimeTicks ActionNumber ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Uniquely identifies the action of a rule, i.e. the Pattern Nevil Brownlee [Page 9] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 Matching Engine's opcode number. Details of the opcodess are given in the 'Traffic Flow Measurement: Architecture' document [9]." SYNTAX INTEGER { ignore(1), fail(2), count(3), countPkt(4), return(5), gosub(6), gosubAct(7), assign(8), assignAct(9), goto(10), gotoAct(11), pushRuleTo(12), pushRuleToAct(13), pushPktTo(14), pushPktToAct(15) } -- -- Control Group: Rule Set Info Table -- flowRuleSetInfoTable OBJECT-TYPE SYNTAX SEQUENCE OF FlowRuleSetInfoEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An array of information about the rule sets held in the meter. Rule set 1 is the meter default, used when the meter starts up. It is built in to the meter; it may not be changed." ::= { flowControl 1 } flowRuleSetInfoEntry OBJECT-TYPE SYNTAX FlowRuleSetInfoEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Information about a particular rule set." INDEX { flowRuleInfoIndex } ::= { flowRuleSetInfoTable 1 } FlowRuleSetInfoEntry ::= SEQUENCE { flowRuleInfoIndex Integer32, flowRuleInfoSize Integer32, flowRuleInfoOwner IpAddress, flowRuleInfoTimeStamp TimeStamp, flowRuleInfoStatus RowStatus } Nevil Brownlee [Page 10] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 flowRuleInfoIndex OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS not-accessible STATUS current DESCRIPTION "An index which selects an entry in the flowRuleSetInfoTable. Each such entry contains control information for a particular rule set which the meter may run." ::= { flowRuleSetInfoEntry 1 } flowRuleInfoSize OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-create STATUS current DESCRIPTION "Number of rules in this rule set. Setting this variable will cause the meter to allocate space for these rules." ::= { flowRuleSetInfoEntry 2 } flowRuleInfoOwner OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS read-create STATUS current DESCRIPTION "Identifies the meter reader which configured this rule set." ::= { flowRuleSetInfoEntry 3 } flowRuleInfoTimeStamp OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-create STATUS current DESCRIPTION "Time this rule set was last changed." ::= { flowRuleSetInfoEntry 4 } flowRuleInfoStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "The status of this rule set. If this object's value is not active(1), the meter will not attempt to use this rule set." ::= { flowRuleSetInfoEntry 5 } -- -- Control Group: Interface Info Table -- flowInterfaceTable OBJECT-TYPE Nevil Brownlee [Page 11] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 SYNTAX SEQUENCE OF FlowInterfaceEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An array of information specific to each meter interface." ::= { flowControl 2 } flowInterfaceEntry OBJECT-TYPE SYNTAX FlowInterfaceEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Information about a particular interface." INDEX { ifIndex } ::= { flowInterfaceTable 1 } FlowInterfaceEntry ::= SEQUENCE { flowInterfaceRate Integer32, flowInterfaceLostPackets Counter32 } flowInterfaceRate OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-write STATUS current DESCRIPTION "The parameter N for statistical counting on this interface. Set to N to count 1/Nth of the packets appearing at this interface. A meter should choose its own algorithm to introduce variance into the sampling so that exactly every Nth packet is not counted. A sampling rate of 1 yields a normal counter. A sampling rate of 0 results in the interface being ignored by the meter." DEFVAL { 1 } -- Count every packet, ::= { flowInterfaceEntry 1 } flowInterfaceLostPackets OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of packets the meter has lost for this interface. Such losses may occur because the meter's network interface hardware or software has been unable to keep up with the traffic volume or because the meter has run out of memory for new flows." ::= { flowInterfaceEntry 2 } -- -- Control Group: Meter Reader Info Table -- Nevil Brownlee [Page 12] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 -- At present any meter reader wishing to collect flow data may do so -- by writing the flowLastReadTime object. The meter interprets -- such a write as the start of a new collection and updates the meter -- reader's row in the reader info table (creating a new row if -- neccessary). In future it may be better to have meter readers -- explicitly create a row in the reader info table, and indicate -- that they are starting a collection by writing that row's -- flowReaderLastTime object." flowReaderInfoTable OBJECT-TYPE SYNTAX SEQUENCE OF FlowReaderInfoEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An array of information about meter readers which may collect flow data from this meter." ::= { flowControl 3 } flowReaderInfoEntry OBJECT-TYPE SYNTAX FlowReaderInfoEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Information about a particular meter reader." INDEX { flowReaderIndex } ::= { flowReaderInfoTable 1 } FlowReaderInfoEntry ::= SEQUENCE { flowReaderIndex Integer32, flowReaderOwner IpAddress, flowReaderLastTime TimeStamp, flowReaderPreviousTime TimeStamp } flowReaderIndex OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS not-accessible STATUS current DESCRIPTION "Selects an entry from the array of meter reader info entries." ::= { flowReaderInfoEntry 1 } flowReaderOwner OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS read-only STATUS current DESCRIPTION "Peer address of this meter reader." ::= { flowReaderInfoEntry 2 } Nevil Brownlee [Page 13] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 flowReaderLastTime OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "Time this meter reader last began a data collection." ::= { flowReaderInfoEntry 3 } flowReaderPreviousTime OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "Time this meter reader began the collection before last." ::= { flowReaderInfoEntry 4 } flowLastReadTime OBJECT-TYPE SYNTAX TimeTicks MAX-ACCESS read-write STATUS current DESCRIPTION "Time last collection of meter data began. This variable will be written by a meter reader as the first step in reading flow data. The meter will set its LastTime value to uptime and set its PreviousTime value to the old LastTime. This allows the meter to recover flows which have been inactive since PreviousTime, for these have been collected at least once. If the meter fails to write flowLastReadTime, e.g. by failing authentication in the meter SNMP write community, collection may still proceed but the meter may not be able to recover inactive flows." ::= { flowControl 4 } -- -- Control Group: General Meter Control Variables -- -- At present the meter only runs a single rule set - the 'current' -- one and has a single 'standby' rule set. In future it may be -- developed so as to run multiple rule sets simultaneously; that would -- require a more elaborate set of control variables to allow reliable -- operation. flowCurrentRuleSet OBJECT-TYPE SYNTAX INTEGER (0..255) MAX-ACCESS read-write STATUS current DESCRIPTION "Index to the array of rule tables. Specifies which set of rules is currently being used for accounting by the meter. When the manager sets this variable the meter will close its Nevil Brownlee [Page 14] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 current rule set and start using the new one. Flows created by the old rule set remain in memory, orphaned until their data has been read. Specifying rule set 0 (the empty set) stops flow measurement." ::= { flowControl 5 } flowStandbyRuleSet OBJECT-TYPE SYNTAX INTEGER (0..255) MAX-ACCESS read-write STATUS current DESCRIPTION "Index to the array of rule tables. After reaching HighWaterMark (see below) the meter may switch to using it's standby rule set. For this to be effective the manager should have downloaded a standby rule set which uses a coarser reporting granularity. The manager may also need to decrease the meter reading interval so that the meter can recover flows measured by its normal rule set." ::= { flowControl 6 } flowHighWaterMark OBJECT-TYPE SYNTAX INTEGER (0..100) MAX-ACCESS read-write STATUS current DESCRIPTION "A value expressed as a percentage, interpreted by the meter as an indication of how full the flow table should be before it should switch to the standby rule set (if one has been specified). Values of 0% or 100% disable the checking represented by this variable." ::= { flowControl 7 } flowFloodMark OBJECT-TYPE SYNTAX INTEGER (0..100) MAX-ACCESS read-write STATUS current DESCRIPTION "A value expressed as a percentage, interpreted by the meter as an indication of how full the flow table should be before it should take some action to avoid running out of resources to handle new flows. Values of 0% or 100% disable the checking represented by this variable." ::= { flowControl 8 } flowInactivityTimeout OBJECT-TYPE SYNTAX Integer32 (1..3600) MAX-ACCESS read-write STATUS current DESCRIPTION "The time in seconds since the last packet seen, after which the flow may be terminated. Note that although a Nevil Brownlee [Page 15] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 flow may have been terminated, its data must be collected before its memory can be recovered." DEFVAL { 600 } -- 10 minutes ::= { flowControl 9 } flowActiveFlows OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "The numbers of flows which are currently in use, i.e. have been active since the last collection." ::= { flowControl 10 } flowMaxFlows OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "The maximum number of flows allowed in the meter's flow table. At present this is determined when the meter is first started up." ::= { flowControl 11 } -- -- The Flow Table -- -- This is a table kept by a meter, with one flow data entry for every -- flow being measured. Each flow data entry stores the attribute -- values for a traffic flow. Details of flows and their attributes -- are given in the 'Traffic Flow Measurement: Architecture' -- document [9]. -- From time to time a meter reader may sweep the flow table so as read -- counts. To reduce the number of SNMP requests required to do this, -- two further tables provide alternative windows into the flow table. -- The Activity Table allows a meter reader to find all the flows which -- were active at or after a specified time, and the Column Activity -- Table allows a meter reader to retrieve part of a column from the -- flow table. Note that it is not sensible for the meter to keep -- the Activity Table in LastActiveTime order, since that would result -- in very active flows being counted many times during the same -- collection. -- This scheme allows multiple meter readers to independently use the -- same meter; the meter readers do not have to be synchronised and -- they may use different collection intervals. flowDataTable OBJECT-TYPE Nevil Brownlee [Page 16] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 SYNTAX SEQUENCE OF FlowDataEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The list of all flows being measured." ::= { flowData 1 } flowDataEntry OBJECT-TYPE SYNTAX FlowDataEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The flow data record for a particular flow." INDEX { flowDataIndex } ::= { flowDataTable 1 } FlowDataEntry ::= SEQUENCE { flowDataIndex Integer32, flowDataStatus INTEGER, flowDataSourceInterface Integer32, -- Source Address flowDataSourceAdjacentType AddressType, flowDataSourceAdjacentAddress AdjacentAddress, flowDataSourceAdjacentMask AdjacentAddress, flowDataSourcePeerType AddressType, flowDataSourcePeerAddress PeerAddress, flowDataSourcePeerMask PeerAddress, flowDataSourceTransType INTEGER, flowDataSourceTransAddress TransportAddress, flowDataSourceTransMask TransportAddress, flowDataDestInterface Integer32, -- Dest Address flowDataDestAdjacentType AddressType, flowDataDestAdjacentAddress AdjacentAddress, flowDataDestAdjacentMask AdjacentAddress, flowDataDestPeerType AddressType, flowDataDestPeerAddress PeerAddress, flowDataDestPeerMask PeerAddress, flowDataDestTransType INTEGER, flowDataDestTransAddress TransportAddress, flowDataDestTransMask TransportAddress, flowDataPDUScale INTEGER, -- Rule Set flowDataOctetScale INTEGER, flowDataRuleSet INTEGER, flowDataToOctets Counter32, -- Source->Dest flowDataToPDUs Counter32, flowDataFromOctets Counter32, -- Dest->Source flowDataFromPDUs Counter32, flowDataFirstTime TimeTicks, -- Activity times Nevil Brownlee [Page 17] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 flowDataLastActiveTime TimeTicks, flowDataSourceSubscriberID OCTET STRING, flowDataDestSubscriberID OCTET STRING, flowDataSessionID OCTET STRING, flowDataSourceClass INTEGER, flowDataDestClass INTEGER, flowDataClass INTEGER, flowDataSourceKind INTEGER, flowDataDestKind INTEGER, flowDataKind INTEGER } flowDataIndex OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "Value of this flow data record's index within the meter's flow table. The value 0 should be used as an initial value for SNMP GetNext requests when performing a serial search of the flow table The value 1 should NOT be used; it is reserved as a special end marker for the flowColumnActivityData variable." ::= { flowDataEntry 1 } flowDataStatus OBJECT-TYPE SYNTAX INTEGER { inactive(1), current(2), idle(3) } MAX-ACCESS read-only STATUS current DESCRIPTION "Status of this flow data record." ::= { flowDataEntry 2 } flowDataSourceInterface OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "Index of the interface associated with the source address for this flow. It's value is one of those contained in the ifIndex field of the meter's interfaces table." ::= { flowDataEntry 3 } flowDataSourceAdjacentType OBJECT-TYPE SYNTAX AddressType MAX-ACCESS read-only STATUS current DESCRIPTION Nevil Brownlee [Page 18] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 "Adjacent address type of the source for this flow. If accounting is being performed at the network level the adjacent address will probably be an 802 MAC address, and the adjacent address type will indicate the medium type." ::= { flowDataEntry 4 } flowDataSourceAdjacentAddress OBJECT-TYPE SYNTAX AdjacentAddress MAX-ACCESS read-only STATUS current DESCRIPTION "Address of the adjacent device on the path for the source for this flow." ::= { flowDataEntry 5 } flowDataSourceAdjacentMask OBJECT-TYPE SYNTAX AdjacentAddress MAX-ACCESS read-only STATUS current DESCRIPTION "1-bits in this mask indicate which bits must match when comparing the adjacent source address for this flow." ::= { flowDataEntry 6 } flowDataSourcePeerType OBJECT-TYPE SYNTAX AddressType MAX-ACCESS read-only STATUS current DESCRIPTION "Peer address type of the source for this flow." ::= { flowDataEntry 7 } flowDataSourcePeerAddress OBJECT-TYPE SYNTAX PeerAddress MAX-ACCESS read-only STATUS current DESCRIPTION "Address of the peer device for the source of this flow." ::= { flowDataEntry 8 } flowDataSourcePeerMask OBJECT-TYPE SYNTAX PeerAddress MAX-ACCESS read-only STATUS current DESCRIPTION "1-bits in this mask indicate which bits must match when comparing the source peer address for this flow." ::= { flowDataEntry 9 } flowDataSourceTransType OBJECT-TYPE SYNTAX INTEGER (1..255) Nevil Brownlee [Page 19] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 MAX-ACCESS read-only STATUS current DESCRIPTION "Transport address type of the source for this flow. The value of this attribute will depend on the peer address type." ::= { flowDataEntry 10 } flowDataSourceTransAddress OBJECT-TYPE SYNTAX TransportAddress MAX-ACCESS read-only STATUS current DESCRIPTION "Transport address for the source of this flow." ::= { flowDataEntry 11 } flowDataSourceTransMask OBJECT-TYPE SYNTAX TransportAddress MAX-ACCESS read-only STATUS current DESCRIPTION "1-bits in this mask indicate which bits must match when comparing the transport source address for this flow." ::= { flowDataEntry 12 } flowDataDestInterface OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "Index of the interface associated with the dest address for this flow. This value is one of the values contained in the ifIndex field of the interfaces table." ::= { flowDataEntry 13 } flowDataDestAdjacentType OBJECT-TYPE SYNTAX AddressType MAX-ACCESS read-only STATUS current DESCRIPTION "Adjacent address type of the destination for this flow." ::= { flowDataEntry 14 } flowDataDestAdjacentAddress OBJECT-TYPE SYNTAX AdjacentAddress MAX-ACCESS read-only STATUS current DESCRIPTION "Address of the adjacent device on the path for the destination for this flow." ::= { flowDataEntry 15 } Nevil Brownlee [Page 20] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 flowDataDestAdjacentMask OBJECT-TYPE SYNTAX AdjacentAddress MAX-ACCESS read-only STATUS current DESCRIPTION "1-bits in this mask indicate which bits must match when comparing the adjacent dest address for this flow." ::= { flowDataEntry 16 } flowDataDestPeerType OBJECT-TYPE SYNTAX AddressType MAX-ACCESS read-only STATUS current DESCRIPTION "Peer address type of the destination for this flow." ::= { flowDataEntry 17 } flowDataDestPeerAddress OBJECT-TYPE SYNTAX PeerAddress MAX-ACCESS read-only STATUS current DESCRIPTION "Address of the peer device for the destination of this flow." ::= { flowDataEntry 18 } flowDataDestPeerMask OBJECT-TYPE SYNTAX PeerAddress MAX-ACCESS read-only STATUS current DESCRIPTION "1-bits in this mask indicate which bits must match when comparing the dest peer type for this flow." ::= { flowDataEntry 19 } flowDataDestTransType OBJECT-TYPE SYNTAX INTEGER (1..255) MAX-ACCESS read-only STATUS current DESCRIPTION "Transport address type of the destination for this flow. The value of this attribute will depend on the peer address type." ::= { flowDataEntry 20 } flowDataDestTransAddress OBJECT-TYPE SYNTAX TransportAddress MAX-ACCESS read-only STATUS current DESCRIPTION "Transport address for the destination of this flow." ::= { flowDataEntry 21 } Nevil Brownlee [Page 21] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 flowDataDestTransMask OBJECT-TYPE SYNTAX TransportAddress MAX-ACCESS read-only STATUS current DESCRIPTION "1-bits in this mask indicate which bits must match when comparing the transport destination address for this flow." ::= { flowDataEntry 22 } flowDataPDUScale OBJECT-TYPE SYNTAX INTEGER (1..255) MAX-ACCESS read-only STATUS current DESCRIPTION "The scale factor applied to this particular flow. Indicates the number of bits the PDU counter values should be moved left to obtain the actual values." ::= { flowDataEntry 23 } flowDataOctetScale OBJECT-TYPE SYNTAX INTEGER (1..255) MAX-ACCESS read-only STATUS current DESCRIPTION "The scale factor applied to this particular flow. Indicates the number of bits the octet counter values should be moved left to obtain the actual values." ::= { flowDataEntry 24 } flowDataRuleSet OBJECT-TYPE SYNTAX INTEGER (1..255) MAX-ACCESS read-only STATUS current DESCRIPTION "The RuleSet number of the rule set which created this flow." ::= { flowDataEntry 25 } flowDataToOctets OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The count of octets flowing from source to dest address and being delivered to the protocol level being metered. In the case of IP this would count the number of octets delivered to the IP level." ::= { flowDataEntry 26 } flowDataToPDUs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only Nevil Brownlee [Page 22] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 STATUS current DESCRIPTION "The count of protocol packets flowing from source to dest address and being delivered to the protocol level being metered. In the case of IP, for example, this would count the IP packets delivered to the IP protocol level." ::= { flowDataEntry 27 } flowDataFromOctets OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The count of octets flowing from dest to source address and being delivered to the protocol level being metered." ::= { flowDataEntry 28 } flowDataFromPDUs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The count of protocol packets flowing from dest to source address and being delivered to the protocol level being metered. In the case of IP, for example, this would count the IP packets delivered to the IP protocol level." ::= { flowDataEntry 29 } flowDataFirstTime OBJECT-TYPE SYNTAX TimeTicks MAX-ACCESS read-only STATUS current DESCRIPTION "The time at which this flow was first entered in the table" ::= { flowDataEntry 30 } flowDataLastActiveTime OBJECT-TYPE SYNTAX TimeTicks MAX-ACCESS read-only STATUS current DESCRIPTION "The last time this flow had activity, i.e. the time of arrival of the most recent PDU belonging to this flow." ::= { flowDataEntry 31 } flowDataSourceSubscriberID OBJECT-TYPE SYNTAX OCTET STRING (SIZE (4..20)) MAX-ACCESS read-only STATUS current DESCRIPTION "Subscriber ID associated with the source address for this Nevil Brownlee [Page 23] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 flow." ::= { flowDataEntry 32 } flowDataDestSubscriberID OBJECT-TYPE SYNTAX OCTET STRING (SIZE (4..20)) MAX-ACCESS read-only STATUS current DESCRIPTION "Subscriber ID associated with the dest address for this flow." ::= { flowDataEntry 33 } flowDataSessionID OBJECT-TYPE SYNTAX OCTET STRING (SIZE (4..10)) MAX-ACCESS read-only STATUS current DESCRIPTION "Session ID for this flow. Such an ID might be allocated by a network access server to distinguish a series of sessions between the same pair of addresses, which would otherwise appear to be parts of the same accounting flow." ::= { flowDataEntry 34 } flowDataSourceClass OBJECT-TYPE SYNTAX INTEGER (1..255) MAX-ACCESS read-only STATUS current DESCRIPTION "Source class for this flow. Determined by the rules, set by a PushRule action when this flow was entered in the table." ::= { flowDataEntry 35 } flowDataDestClass OBJECT-TYPE SYNTAX INTEGER (1..255) MAX-ACCESS read-only STATUS current DESCRIPTION "Destination class for this flow. Determined by the rules, set by a PushRule action when this flow was entered in the table." ::= { flowDataEntry 36 } flowDataClass OBJECT-TYPE SYNTAX INTEGER (1..255) MAX-ACCESS read-only STATUS current DESCRIPTION "Class for this flow. Determined by the rules, set by a PushRule action when this flow was entered in the table." ::= { flowDataEntry 37 } flowDataSourceKind OBJECT-TYPE Nevil Brownlee [Page 24] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 SYNTAX INTEGER (1..255) MAX-ACCESS read-only STATUS current DESCRIPTION "Source kind for this flow. Determined by the rules, set by a PushRule action when this flow was entered in the table." ::= { flowDataEntry 38 } flowDataDestKind OBJECT-TYPE SYNTAX INTEGER (1..255) MAX-ACCESS read-only STATUS current DESCRIPTION "Destination kind for this flow. Determined by the rules, set by a PushRule action when this flow was entered in the table." ::= { flowDataEntry 39 } flowDataKind OBJECT-TYPE SYNTAX INTEGER (1..255) MAX-ACCESS read-only STATUS current DESCRIPTION "Class for this flow. Determined by the rules, set by a PushRule action when this flow was entered in the table." ::= { flowDataEntry 40 } -- -- The Activity Table -- flowActivityTable OBJECT-TYPE SYNTAX SEQUENCE OF FlowActivityEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Index into the Flow Table. This is the 'Collect Index' described in the 'Traffic Flow Measurement: Architecture' document [9]. It allows a meter reader to retrieve a list containing the flow table indexess for all flows wich were last active at or after a given time." ::= { flowData 2 } flowActivityEntry OBJECT-TYPE SYNTAX FlowActivityEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The Activity Entry for a particular activity time and flow." INDEX { flowActivityTime, flowActivityIndex } ::= { flowActivityTable 1 } Nevil Brownlee [Page 25] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 FlowActivityEntry ::= SEQUENCE { flowActivityTime TimeFilter, flowActivityIndex Integer32 } flowActivityTime OBJECT-TYPE SYNTAX TimeFilter MAX-ACCESS read-only STATUS current DESCRIPTION "This variable is a copy of flowDataLastActiveTime in the flow data record identified by the flowActivityIndex value of this flowActivityTable entry." ::= { flowActivityEntry 1 } flowActivityIndex OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "Index of a flow table entry which was active at or after a specified flowActivity time. This index may be used to retrieve attribute values for that flow data record." ::= { flowActivityEntry 2 } -- -- The Activity Column Table -- flowColumnActivityTable OBJECT-TYPE SYNTAX SEQUENCE OF FlowColumnActivityEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Index into the Flow Table. Allows a meter reader to retrieve a list containing the flow table indeces of flows which were last active at or after a given time, together with the values of a specified attribute for each such flow." ::= { flowData 3 } flowColumnActivityEntry OBJECT-TYPE SYNTAX FlowColumnActivityEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The Column Activity Entry for a particular attribute, activity time and flow." INDEX { flowColumnActivityAttribute, flowColumnActivityTime, flowColumnActivityIndex } Nevil Brownlee [Page 26] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 ::= { flowColumnActivityTable 1 } FlowColumnActivityEntry ::= SEQUENCE { flowColumnActivityAttribute FlowAttributeNumber, flowColumnActivityTime TimeFilter, flowColumnActivityIndex Integer32, flowColumnActivityData OCTET STRING } flowColumnActivityAttribute OBJECT-TYPE SYNTAX FlowAttributeNumber MAX-ACCESS read-only STATUS current DESCRIPTION "Specifies the attribute for which values are required from active flows." ::= { flowColumnActivityEntry 1 } flowColumnActivityTime OBJECT-TYPE SYNTAX TimeFilter MAX-ACCESS read-only STATUS current DESCRIPTION "This variable is a copy of flowDataLastActiveTime in the flow data record identified by the flowColumnActivityIndex value of this flowColumnActivityTable entry." ::= { flowColumnActivityEntry 2 } flowColumnActivityIndex OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "Index of a flow table entry which was active at or after a specified flowColumnActivityTime." ::= { flowColumnActivityEntry 3 } flowColumnActivityData OBJECT-TYPE SYNTAX OCTET STRING (SIZE (5..1000)) MAX-ACCESS read-only STATUS current DESCRIPTION "Collection of attribute data for flows active after flowColumnActivityTime. Within the OCTET STRING is a sequence of { flow index, attribute value } pairs, one for each active flow. The end of the sequence is marked by a flow index value of 0 if there are no more rows in this column, and 1 otherwise. The format of objects inside flowColumnFlowData is as follows. All numbers are unsigned. Numbers and strings appear with Nevil Brownlee [Page 27] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 their high-order bytes leading. Numbers are fixed size, as specified by their SYNTAX in the flow table (above), i.e. one octet for flowAddressType and small constants, and four octets for Counter and Timeticks. Strings are variable-length, with the length given in a single leading octet. The following is an attempt at an ASN.1 definition of flowColumnActivityData: flowColumnActivityData ::= SEQUENCE { RowItems flowRowItemList, EndMarker INTEGER (0..1) -- 0 = No more rows } flowRowItemList ::= SEQUENCE OF flowRowItemEntry flowRowItemEntry ::= SEQUENCE { flowRowNumber INTEGER (1..65535), flowDataValue flowDataType -- Choice depends on attribute } flowDataType ::= CHOICE { flowByteValue INTEGER (1..255), flowShortValue INTEGER (1..65535), flowLongValue Integer32, flowStringValue OCTET STRING -- Length (n) in first byte, -- n+1 bytes total length, trailing zeroes truncated }" ::= { flowColumnActivityEntry 4 } -- -- The Rule Table -- -- This is an array of rule tables; the one in use is selected by -- CurrentRuleSet. To change the rule set the manager chooses a set -- number which is not in use, downloads the new rule set there, then -- writes the new set number into CurrentRuleSet. Rule set 1 is the -- default rule set, used by the meter on start-up. Several rule sets -- can be held in a meter so that the manager can change the rules -- easily, for example with time of day. Note that the manager may -- not change the default rule set, nor the rules in the current rule -- set! See the 'Traffic Flow Measurement: Architecture' document [9] -- for details of rules and how they are used. flowRuleTable OBJECT-TYPE SYNTAX SEQUENCE OF FlowRuleEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Contains all the rule sets which may be used by the meter." ::= { flowRules 1 } Nevil Brownlee [Page 28] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 flowRuleEntry OBJECT-TYPE SYNTAX FlowRuleEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The rule record itself." INDEX { flowRuleSet, flowRuleIndex } ::= { flowRuleTable 1 } FlowRuleEntry ::= SEQUENCE { flowRuleSet INTEGER, flowRuleIndex INTEGER, flowRuleSelector RuleAttributeNumber, flowRuleMask RuleAddress, flowRuleMatchedValue RuleAddress, flowRuleAction ActionNumber, flowRuleParameter Integer32 } flowRuleSet OBJECT-TYPE SYNTAX INTEGER (1..255) MAX-ACCESS not-accessible STATUS current DESCRIPTION "Selects a rule set from the array of rule sets." ::= { flowRuleEntry 1 } flowRuleIndex OBJECT-TYPE SYNTAX INTEGER (1..65535) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The index into the Rule table. N.B: These values will often be consecutive, given the fall-through semantics of processing the table." ::= { flowRuleEntry 2 } flowRuleSelector OBJECT-TYPE SYNTAX RuleAttributeNumber MAX-ACCESS read-create STATUS current DESCRIPTION "Defines the source of the value to match. null(0) is a special case; null rules always succeed. v1(51), v2(52), v3(53), v4(54) and v5(55) select meter variables, each of which can hold the name (i.e. selector value) of an address attribute. When one of these is used as a selector, its value specifies the attribute to be tested. Variable values are set by an Assign action." Nevil Brownlee [Page 29] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 ::= { flowRuleEntry 3 } flowRuleMask OBJECT-TYPE SYNTAX RuleAddress MAX-ACCESS read-create STATUS current DESCRIPTION "The initial mask used to compute the desired value. If the mask is zero the rule's test will always succeed." ::= { flowRuleEntry 4 } flowRuleMatchedValue OBJECT-TYPE SYNTAX RuleAddress MAX-ACCESS read-create STATUS current DESCRIPTION "The resulting value to be matched for equality. Specifically, if the attribute chosen by the flowRuleSelector logically ANDed with the mask specified by the flowRuleMask equals the value specified in the flowRuleMatchedValue, then continue processing the table entry based on the action specified by the flowRuleAction entry. Otherwise, proceed to the next entry in the rule table." ::= { flowRuleEntry 5 } flowRuleAction OBJECT-TYPE SYNTAX ActionNumber MAX-ACCESS read-create STATUS current DESCRIPTION "The action to be taken if this rule's test succeeds, or if the meter's 'test' flag is off. Actions are opcodes for the meter's Packet Matching Engine; details are given in the 'Traffic Flow Measurement: Architecture' document [9]." ::= { flowRuleEntry 6 } flowRuleParameter OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-create STATUS current DESCRIPTION "A parameter value providing extra information for the rule's action." ::= { flowRuleEntry 7 } -- -- Accounting Meter conformance statement -- flowMIBCompliances Nevil Brownlee [Page 30] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 OBJECT IDENTIFIER ::= { flowMIBConformance 1 } flowMIBGroups OBJECT IDENTIFIER ::= { flowMIBConformance 2 } flowControlGroup OBJECT-GROUP OBJECTS { flowRuleInfoSize, flowRuleInfoOwner, flowRuleInfoTimeStamp, flowRuleInfoStatus, flowInterfaceRate, flowInterfaceLostPackets, flowReaderOwner, flowReaderLastTime, flowReaderPreviousTime, flowLastReadTime, flowCurrentRuleSet, flowStandbyRuleSet, flowHighWaterMark, flowFloodMark, flowInactivityTimeout, flowActiveFlows, flowMaxFlows } STATUS current DESCRIPTION "The control group defines objects which are used to control an accounting meter." ::= {flowMIBGroups 1 } flowDataTableGroup OBJECT-GROUP OBJECTS { flowDataIndex, flowDataStatus, flowDataSourceInterface, flowDataSourceAdjacentType, flowDataSourceAdjacentAddress, flowDataSourceAdjacentMask, flowDataSourcePeerType, flowDataSourcePeerAddress, flowDataSourcePeerMask, flowDataSourceTransType, flowDataSourceTransAddress, flowDataSourceTransMask, flowDataDestInterface, flowDataDestAdjacentType, flowDataDestAdjacentAddress, flowDataDestAdjacentMask, flowDataDestPeerType, flowDataDestPeerAddress, flowDataDestPeerMask, flowDataDestTransType, flowDataDestTransAddress, flowDataDestTransMask, flowDataRuleSet, flowDataToOctets, flowDataToPDUs, flowDataFromOctets, flowDataFromPDUs, flowDataFirstTime, flowDataLastActiveTime, flowDataSourceClass, flowDataDestClass, flowDataClass, flowDataSourceKind, flowDataDestKind, flowDataKind, Nevil Brownlee [Page 31] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 flowActivityTime, flowActivityIndex } STATUS current DESCRIPTION "The flow table group defines objects which provide the structure for the rule table, including the creation time and activity time indexes into it. In addition it defines objects which provide a base set of flow attributes for the adjacent, peer and transport layers, together with a flow's counters and times. Finally it defines a flow's class and kind attributes, which are set by rule actions." ::= {flowMIBGroups 2 } flowDataScaleGroup OBJECT-GROUP OBJECTS { flowDataPDUScale, flowDataOctetScale } STATUS current DESCRIPTION "The flow scale group defines objects which specify scale factors for counters." ::= {flowMIBGroups 3 } flowDataSubscriberGroup OBJECT-GROUP OBJECTS { flowDataSourceSubscriberID, flowDataDestSubscriberID, flowDataSessionID } STATUS current DESCRIPTION "The flow subscriber group defines objects which may be used to identify the end point(s) of a flow." ::= {flowMIBGroups 4 } flowDataColumnTableGroup OBJECT-GROUP OBJECTS { flowColumnActivityAttribute, flowColumnActivityTime, flowColumnActivityIndex, flowColumnActivityData } STATUS current DESCRIPTION "The flow column table group defines objects which can be used to collect part of a column of attribute values from the flow table." ::= {flowMIBGroups 5 } flowRuleTableGroup OBJECT-GROUP OBJECTS { flowRuleSelector, Nevil Brownlee [Page 32] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 flowRuleMask, flowRuleMatchedValue, flowRuleAction, flowRuleParameter } STATUS current DESCRIPTION "The rule table group defines objects which hold the set(s) of rules specifying which traffic flows are to be accounted for." ::= {flowMIBGroups 6 } flowMIBCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for a Traffic Flow Meter." MODULE MANDATORY-GROUPS { flowControlGroup, flowDataTableGroup, flowRuleTableGroup } ::= { flowMIBCompliances 1 } END 5 Acknowledgements An early draft of this document was produced under the auspices of the IETF's Accounting Working Group with assistance from SNMP and SAAG working groups. Particular thanks are due to Jim Barnes, Sig Handelman and Stephen Stibler for their support and their assistance with checking the MIB. 6 References [1] McCloghrie, K., and Rose, M., Editors, "Management Information Base for Network Management of TCP/IP-based internets," RFC 1213, Performance Systems International, March 1991. [2] Case J., McCloghrie K., Rose M., and Waldbusser S., "Structure of Management Information for version 2 of the Simple Network Managemenet Protocol," RFC 1442, SNMP Research Inc., Hughes LAN Systems, Dover Beach Consulting, Carnegie Mellon University, April 1993. Nevil Brownlee [Page 33] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 [3] Case J., McCloghrie, K., Rose, M., and Waldbusser, S., "Textual Conventions for version 2 of the Simple Network Managemenet Protocol SNMPv2", RFC 1443, SNMP Research Inc., Hughes LAN Systems, Dover Beach Consulting, Carnegie Mellon University, April 1993. [4] Case, J., McCloghrie, K., Rose, M., and Waldbusser, S., "Conformance Statements for version 2 of the Simple Network Managemenet Protocol (SNMPv2)," RFC 1444, SNMP Research Inc., Hughes LAN Systems, Dover Beach Consulting, Carnegie Mellon University, April 1993. [5] Case, J., McCloghrie, K., Rose, M., and Waldbusser, S., "Coexistence between version 1 and version 2 of the Internet-standard Network Management Framework," RFC 1452, SNMP Research Inc., Hughes LAN Systems, Dover Beach Consulting, Carnegie Mellon University, April 1993. [6] Information processing systems - Open Systems Interconnection - Specification of Abstract Syntax Notation One (ASN.1), International Organization for Standardization, International Standard 8824, December 1987. [7] Information processing systems - Open Systems Interconnection - Specification of Basic Encoding Rules for Abstract Notation One (ASN.1), International Organization for Standardization, International Standard 8825, December 1987. [8] Mills, C., Hirsch, G. and Ruth, G., "Internet Accounting Background," RFC 1272, Bolt Beranek and Newman Inc., Meridian Technology Corporation, November 1991. [9] Brownlee, N., Mills, C., and Ruth, G., "Traffic Flow Measurement: Architecture," Internet Draft (work in progress), The University of Auckland, Bolt Beranek and Newman Inc., GTE Laboratories, Inc, February 1995. [10] Case, J., "FDDI Management Information Base," RFC 1285, SNMP Research Incorporated, January 1992. [11] Waldbusser, S., "Remote Network Monitoring Management Information Base, Version 2," Internet Draft (work in progress). 7 Security Considerations Security issues are not discussed in this document. Nevil Brownlee [Page 34] INTERNET-DRAFT Traffic Flow Measurement: Meter MIB Feb 1996 8 Author's Address Nevil Brownlee Computer Centre The University of Auckland Phone: +64 9 373 7599 x8941 E-mail: n.brownlee @auckland.ac.nz Nevil Brownlee [Page 35]