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This is a modified version of the Internet RFC suitable for machine-translating. Original version is available here:
RFC1066
Obsoleted by: 1156 UNKNOWN
Network Working Group K. McCloghrie
Request For Comments: 1066 M. Rose
TWG
August 1988
Management Information Base for Network Management of TCP/IP-based internets
Table of Contents
1. Status of this Memo ................................... 1
2. IAB POLICY STATEMENT .................................. 2
3. Introduction .......................................... 2
4. Objects ............................................... 5
4.1 Object Groups ........................................ 5
4.2 Format of Definitions ................................ 6
5. Object Definitions .................................... 7
5.1 The System Group ..................................... 8
5.2 The Interfaces Group ................................. 10
5.2.1 The Interfaces Table ............................... 10
5.3 The Address Translation Group ........................ 22
5.4 The IP Group ......................................... 25
5.4.1 The IP Address Table ............................... 33
5.4.2 The IP Routing Table ............................... 35
5.5 The ICMP Group ....................................... 42
5.6 The TCP Group ........................................ 52
5.7 The UDP Group ........................................ 61
5.8 The EGP Group ........................................ 63
5.8.1 The EGP Neighbor Table ............................. 64
6. Definitions ........................................... 67
7. Acknowledgements ...................................... 88
8. References ............................................ 89
1. Status of this Memo
This memo provides the initial version of the Management Information Base (MIB) for use with network management protocols in TCP/IP-based internets in the short-term. In particular, together with its companion memos which describe the structure of management information along with the initial network management protocol, these documents provide a simple, workable architecture and system for managing TCP/IP-based internets and in particular the Internet. This memo specifies a draft standard for the Internet community. TCP/IP implementations in the Internet which are network manageable are expected to adopt and implement this specification.
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Distribution of this memo is unlimited.
2. IAB POLICY STATEMENT
This MIB specification is the first edition of an evolving document defining variables needed for monitoring and control of various components of the Internet. Not all groups of defined variables are mandatory for all Internet components.
For example, the EGP group is mandatory for gateways using EGP but not for hosts which should not be running EGP. Similarly, the TCP group is mandatory for hosts running TCP but not for gateways which aren't running it. What IS mandatory, however, is that all variables of a group be supported if any element of the group is supported.
It is expected that additional MIB groups and variables will be defined over time to accommodate the monitoring and control needs of new or changing components of the Internet. The MIB working group will continue to refine this specification and projects a revision incorporating new requirements in early 1989.
3. Introduction
As reported in RFC 1052, IAB Recommendations for the Development of Internet Network Management Standards [1], the Internet Activities Board has directed the Internet Engineering Task Force (IETF) to create two new working groups in the area of network management. One group is charged with the further specification and definition of elements to be included in the Management Information Base. The other is charged with defining the modifications to the Simple Network Management Protocol (SNMP) to accommodate the short-term needs of the network vendor and operator communities. The long-term needs of the Internet community are to be met using the ISO CMIS/CMIP [2,3] framework as a basis. An existing IETF working group, the "NETMAN" group, is already engaged in defining the use of CMIS/CMIP in a TCP/IP network, and will continue with responsibility for addressing the longer-term requirements.
The output of the MIB working group is to be provided to both the SNMP working group and the NETMAN group, so as to ensure compatibility of monitored items for both network management frameworks.
The MIB working group has produced this memo and a companion. The companion memo [4] defines a Structure for Management Information (SMI) for use by the managed objects contained in the MIB. This memo defines the list of managed objects.
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The IAB also urged the working groups to be "extremely sensitive to the need to keep SNMP simple," and recommends that the MIB working group take as its starting inputs the MIB definitions found in the High-Level Entity Management Systems (HEMS) RFC 1024 [5], the initial SNMP specification [6], and the CMIS/CMIP memos [7,8].
Thus, the list of managed objects defined here, has been derived by taking only those elements which are considered essential. Since such elements are essential, there is no need to allow the implementation of individual objects, to be optional. Rather, all compliant implementations will contain all applicable (see below) objects defined in this memo.
This approach of taking only the essential objects is NOT restrictive, since the SMI defined in the companion memo provides three extensibility mechanisms: one, the addition of new standard objects through the definitions of new versions of the MIB; two, the addition of widely-available but non-standard objects through the multilateral subtree; and three, the addition of private objects through the enterprises subtree. Such additional objects can not only be used for vendor-specific elements, but also for experimentation as required to further the knowledge of which other objects are essential.
The primary criterion for being considered essential was for an object to be contained in all of the above referenced MIB definitions. A few other objects have been included, but only if the MIB working group believed they are truly essential. The detailed list of criteria against which potential inclusions in this (initial) MIB were considered, was:
1) An object needed to be essential for either fault or configuration management.
2) Only weak control objects were permitted (by weak, it is meant that tampering with them can do only limited damage). This criterion reflects the fact that the current management protocols are not sufficiently secure to do more powerful control operations.
3) Evidence of current use and utility was required.
4) An attempt was made to limit the number of objects to about 100 to make it easier for vendors to fully instrument their software.
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5) To avoid redundant variables, it was required that no object be included that can be derived from others in the MIB.
6) Implementation specific objects (e.g., for BSD UNIX) were excluded.
7) It was agreed to avoid heavily instrumenting critical sections of code. The general guideline was one counter per critical section per layer.
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4. Objects
Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. Objects in the MIB are defined using Abstract Syntax Notation One (ASN.1) [9].
The mechanisms used for describing these objects are specified in the companion memo. 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 companion memo 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. This memo specifies the use of the basic encoding rules of ASN.1 [10].
4.1. Object Groups
Since this list of managed objects contains only the essential elements, there is no need to allow individual objects to be optional. Rather, the objects are arranged into the following groups:
- System - Interfaces - Address Translation - IP - ICMP - TCP - UDP - EGP
There are two reasons for defining these groups: one, to provide a means of assigning object identifiers; two, to provide a method for implementations of managed agents to know which objects they must implement. This method is as follows: if the semantics of a group is applicable to an implementation, then it must implement all objects in that group. For example, an implementation must implement the EGP group if and only if it implements the EGP protocol.
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4.2. Format of Definitions
The next section contains the specification of all object types contained in the MIB. Following the conventions of the companion memo, the object types are defined using the following fields:
OBJECT:
-------
A textual name, termed the OBJECT DESCRIPTOR, for the
object type, along with its corresponding OBJECT IDENTIFIER.
Syntax:
The abstract syntax for the object type, presented using ASN.1. This must resolve to an instance of the ASN.1 type ObjectSyntax defined in the SMI.
Definition:
A textual description of the semantics of the object type. Implementations should ensure that their interpretation of the object type fulfills this definition since this MIB is intended for use in multi- vendor environments. As such it is vital that object types have consistent meaning across all machines.
Access:
One of read-only, read-write, write-only, or not-accessible.
Status:
One of mandatory, optional, or obsolete.
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5. Object Definitions
RFC1066-MIB { iso org(3) dod(6) internet(1) mgmt(2) 1 }
DEFINITIONS ::= BEGIN
IMPORTS mgmt, OBJECT-TYPE, NetworkAddress, IpAddress, Counter, Gauge, TimeTicks
FROM RFC1065-SMI;
mib OBJECT IDENTIFIER ::= { mgmt 1 }
system OBJECT IDENTIFIER ::= { mib 1 } interfaces OBJECT IDENTIFIER ::= { mib 2 } at OBJECT IDENTIFIER ::= { mib 3 } ip OBJECT IDENTIFIER ::= { mib 4 } icmp OBJECT IDENTIFIER ::= { mib 5 } tcp OBJECT IDENTIFIER ::= { mib 6 } udp OBJECT IDENTIFIER ::= { mib 7 } egp OBJECT IDENTIFIER ::= { mib 8 }
END
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5.1. The System Group
Implementation of the System group is mandatory for all systems.
OBJECT:
-------
sysDescr { system 1 }
Syntax:
OCTET STRING
Definition:
A textual description of the entity. This value should include the full name and version identification of the system's hardware type, software operating-system, and networking software. It is mandatory that this only contain printable ASCII characters.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
sysObjectID { system 2 }
Syntax:
OBJECT IDENTIFIER
Definition:
The vendor's authoritative identification of the network management subsystem contained in the entity. This value is allocated within the SMI enterprises subtree (1.3.6.1.4.1) and provides an easy and unambiguous means for determining "what kind of box" is being managed. For example, if vendor "Flintstones, Inc." was assigned the subtree 1.3.6.1.4.1.42, it could assign the identifier 1.3.6.1.4.1.42.1.1 to its "Fred Router".
Access:
read-only.
Status:
mandatory.
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OBJECT:
-------
sysUpTime { system 3 }
Syntax:
TimeTicks
Definition:
The time (in hundredths of a second) since the network management portion of the system was last re-initialized.
Access:
read-only.
Status:
mandatory.
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5.2. The Interfaces Group
Implementation of the Interfaces group is mandatory for all systems.
OBJECT:
-------
ifNumber { interfaces 1 }
Syntax:
INTEGER
Definition:
The number of network interfaces (regardless of their current state) on which this system can send/receive IP datagrams.
Access:
read-only.
Status:
mandatory.
5.2.1. The Interfaces Table
OBJECT:
-------
ifTable { interfaces 2 }
Syntax:
SEQUENCE OF IfEntry
Definition:
A list of interface entries. The number of entries is given by the value of ifNumber.
Access:
read-write.
Status:
mandatory.
OBJECT:
-------
ifEntry { ifTable 1 }
Syntax:
IfEntry ::= SEQUENCE {
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RFC 1066 MIB August 1988
ifIndex
INTEGER,
ifDescr
OCTET STRING,
ifType
INTEGER,
ifMtu
INTEGER,
ifSpeed
Gauge,
ifPhysAddress
OCTET STRING,
ifAdminStatus
INTEGER,
ifOperStatus
INTEGER,
ifLastChange
TimeTicks,
ifInOctets
Counter,
ifInUcastPkts
Counter,
ifInNUcastPkts
Counter,
ifInDiscards
Counter,
ifInErrors
Counter,
ifInUnknownProtos
Counter,
ifOutOctets
Counter,
ifOutUcastPkts
Counter,
ifOutNUcastPkts
Counter,
ifOutDiscards
Counter,
ifOutErrors
Counter,
ifOutQLen
Gauge
}
Definition:
An interface entry containing objects at the subnetwork layer and below for a particular interface.
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Access:
read-write.
Status:
mandatory.
We now consider the individual components of each interface entry:
OBJECT:
-------
ifIndex { ifEntry 1 }
Syntax:
INTEGER
Definition:
A unique value for each interface. Its value ranges between 1 and the value of ifNumber. The value for each interface must remain constant at least from one re- initialization of the entity's network management system to the next re-initialization.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ifDescr { ifEntry 2 }
Syntax:
OCTET STRING
Definition:
A text string containing information about the interface. This string should include the name of the manufacturer, the product name and the version of the hardware interface. The string is intended for presentation to a human; it must not contain anything but printable ASCII characters.
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Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ifType { ifEntry 3 }
Syntax:
INTEGER {
other(1), -- none of the following
regular1822(2),
hdh1822(3), ddn-x25(4), rfc877-x25(5), ethernet-csmacd(6), iso88023-csmacd(7), iso88024-tokenBus(8), iso88025-tokenRing(9), iso88026-man(10), starLan(11), proteon-10MBit(12), proteon-80MBit(13), hyperchannel(14), fddi(15), lapb(16), sdlc(17),
t1-carrier(18),
cept(19), -- european equivalent of T-1
basicIsdn(20),
primaryIsdn(21),
-- proprietary serial
propPointToPointSerial(22)
}
Definition:
The type of interface, distinguished according to the physical/link/network protocol(s) immediately "below" IP in the protocol stack.
Access:
read-only.
Status:
mandatory.
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OBJECT:
-------
ifMtu { ifEntry 4 }
Syntax:
INTEGER
Definition:
The size of the largest IP datagram which can be sent/received on the interface, specified in octets.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ifSpeed { ifEntry 5 }
Syntax:
Gauge
Definition:
An estimate of the interface's current bandwidth in bits per second. For interfaces which do not vary in bandwidth or for those where no accurate estimation can be made, this object should contain the nominal bandwidth.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ifPhysAddress { ifEntry 6 }
Syntax:
OCTET STRING
Definition:
The interface's address at the protocol layer immediately "below" IP in the protocol stack. For interfaces which do not have such an address (e.g., a serial line), this object should contain an octet string of zero length.
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Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ifAdminStatus { ifEntry 7 }
Syntax:
INTEGER {
up(1), -- ready to pass packets down(2), testing(3) -- in some test mode
}
Definition:
The desired state of the interface. The testing(3) state indicates that no operational packets can be passed.
Access:
read-write.
Status:
mandatory.
OBJECT:
-------
ifOperStatus { ifEntry 8 }
Syntax:
INTEGER {
up(1), -- ready to pass packets down(2), testing(3) -- in some test mode
}
Definition:
The current operational state of the interface. The testing(3) state indicates that no operational packets can be passed.
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Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ifLastChange { ifEntry 9 }
Syntax:
TimeTicks
Definition:
The value of sysUpTime at the time the interface entered its current operational state. If the current state was entered prior to the last re-initialization of the local network management subsystem, then this object contains a zero value.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ifInOctets { ifEntry 10 }
Syntax:
Counter
Definition:
The total number of octets received on the interface, including framing characters.
Access:
read-only.
Status:
mandatory.
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OBJECT:
-------
ifInUcastPkts { ifEntry 11 }
Syntax:
Counter
Definition:
The number of (subnet) unicast packets delivered to a higher-layer protocol.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ifInNUcastPkts { ifEntry 12 }
Syntax:
Counter
Definition:
The number of non-unicast (i.e., subnet broadcast or subnet multicast) packets delivered to a higher-layer protocol.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ifInDiscards { ifEntry 13 }
Syntax:
Counter
Definition:
The number of inbound packets which were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher-layer protocol. One possible reason for discarding such a packet could be to free up buffer space.
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Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ifInErrors { ifEntry 14 }
Syntax:
Counter
Definition:
The number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ifInUnknownProtos { ifEntry 15 }
Syntax:
Counter
Definition:
The number of packets received via the interface which were discarded because of an unknown or unsupported protocol.
Access:
read-only.
Status:
mandatory.
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OBJECT:
-------
ifOutOctets { ifEntry 16 }
Syntax:
Counter
Definition:
The total number of octets transmitted out of the interface, including framing characters.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ifOutUcastPkts { ifEntry 17 }
Syntax:
Counter
Definition:
The total number of packets that higher-level protocols requested be transmitted to a subnet-unicast address, including those that were discarded or not sent.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ifOutNUcastPkts { ifEntry 18 }
Syntax:
Counter
Definition:
The total number of packets that higher-level protocols requested be transmitted to a non-unicast (i.e., a subnet broadcast or subnet multicast) address, including those that were discarded or not sent.
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Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ifOutDiscards { ifEntry 19 }
Syntax:
Counter
Definition:
The number of outbound packets which were chosen to be discarded even though no errors had been detected to prevent their being transmitted. One possible reason for discarding such a packet could be to free up buffer space.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ifOutErrors { ifEntry 20 }
Syntax:
Counter
Definition:
The number of outbound packets that could not be transmitted because of errors.
Access:
read-only.
Status:
mandatory.
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OBJECT:
-------
ifOutQLen { ifEntry 21 }
Syntax:
Gauge
Definition:
The length of the output packet queue (in packets).
Access:
read-only.
Status:
mandatory.
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5.3. The Address Translation Group
Implementation of the Address Translation group is mandatory for all systems.
The Address Translation group contains one table which is the union across all interfaces of the translation tables for converting a NetworkAddress (e.g., an IP address) into a subnetwork-specific address. For lack of a better term, this document refers to such a subnetwork-specific address as a "physical" address.
Examples of such translation tables are: for broadcast media where ARP is in use, the translation table is equivalent to the ARP cache; or, on an X.25 network where non-algorithmic translation to X.121 addresses is required, the translation table contains the NetworkAddress to X.121 address equivalences.
OBJECT:
-------
atTable { at 1 }
Syntax:
SEQUENCE OF AtEntry
Definition:
The Address Translation tables contain the NetworkAddress to "physical" address equivalences. Some interfaces do not use translation tables for determining address equivalences (e.g., DDN-X.25 has an algorithmic method); if all interfaces are of this type, then the Address Translation table is empty, i.e., has zero entries.
Access:
read-write.
Status:
mandatory.
OBJECT:
-------
atEntry { atTable 1 }
Syntax:
AtEntry ::= SEQUENCE {
atIfIndex
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INTEGER,
atPhysAddress
OCTET STRING,
atNetAddress
NetworkAddress
}
Definition:
Each entry contains one NetworkAddress to "physical" address equivalence.
Access:
read-write.
Status:
mandatory.
We now consider the individual components of each Address Translation table entry:
OBJECT:
-------
atIfIndex { atEntry 1 }
Syntax:
INTEGER
Definition:
The interface on which this entry's equivalence is effective. The interface identified by a particular value of this index is the same interface as identified
by the same value of ifIndex.
Access:
read-write.
Status:
mandatory.
OBJECT:
-------
atPhysAddress { atEntry 2 }
Syntax:
OCTET STRING
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Definition:
The media-dependent "physical" address.
Access:
read-write.
Status:
mandatory.
OBJECT:
-------
atNetAddress { atEntry 3 }
Syntax:
NetworkAddress
Definition:
The NetworkAddress (e.g., the IP address) corresponding to the media-dependent "physical" address.
Access:
read-write.
Status:
mandatory.
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5.4. The IP Group
Implementation of the IP group is mandatory for all systems.
OBJECT:
-------
ipForwarding { ip 1 }
Syntax:
INTEGER {
gateway(1), -- entity forwards datagrams host(2) -- entity does NOT forward datagrams
}
Definition:
The indication of whether this entity is acting as an IP gateway in respect to the forwarding of datagrams received by, but not addressed to, this entity. IP gateways forward datagrams; Hosts do not (except those Source-Routed via the host).
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipDefaultTTL { ip 2 }
Syntax:
INTEGER
Definition:
The default value inserted into the Time-To-Live field of the IP header of datagrams originated at this entity, whenever a TTL value is not supplied by the transport layer protocol.
Access:
read-write.
Status:
mandatory.
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OBJECT:
-------
ipInReceives { ip 3 }
Syntax:
Counter
Definition:
The total number of input datagrams received from interfaces, including those received in error.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipInHdrErrors { ip 4 }
Syntax:
Counter
Definition:
The number of input datagrams discarded due to errors in their IP headers, including bad checksums, version number mismatch, other format errors, time-to-live exceeded, errors discovered in processing their IP options, etc.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipInAddrErrors { ip 5 }
Syntax:
Counter
Definition:
The number of input datagrams discarded because the IP address in their IP header's destination field was not a valid address to be received at this entity. This count includes invalid addresses (e.g., 0.0.0.0) and addresses of unsupported Classes (e.g., Class E). For entities which are not IP Gateways and therefore do not forward datagrams, this counter includes datagrams discarded because the destination address was not a local address.
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Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipForwDatagrams { ip 6 }
Syntax:
Counter
Definition:
The number of input datagrams for which this entity was not their final IP destination, as a result of which an attempt was made to find a route to forward them to that final destination. In entities which do not act as IP Gateways, this counter will include only those packets which were Source-Routed via this entity, and the Source-Route option processing was successful.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipInUnknownProtos { ip 7 }
Syntax:
Counter
Definition:
The number of locally-addressed datagrams received successfully but discarded because of an unknown or unsupported protocol.
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Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipInDiscards { ip 8 }
Syntax:
Counter
Definition:
The number of input IP datagrams for which no problems were encountered to prevent their continued processing, but which were discarded (e.g. for lack of buffer space). Note that this counter does not include any datagrams discarded while awaiting re-assembly.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipInDelivers { ip 9 }
Syntax:
Counter
Definition:
The total number of input datagrams successfully delivered to IP user-protocols (including ICMP).
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipOutRequests { ip 10 }
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Syntax:
Counter
Definition:
The total number of IP datagrams which local IP user- protocols (including ICMP) supplied to IP in requests for transmission. Note that this counter does not include any datagrams counted in ipForwDatagrams.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipOutDiscards { ip 11 }
Syntax:
Counter
Definition:
The number of output IP datagrams for which no problem was encountered to prevent their transmission to their destination, but which were discarded (e.g., for lack of buffer space). Note that this counter would include datagrams counted in ipForwDatagrams if any such packets met this (discretionary) discard criterion.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipOutNoRoutes { ip 12 }
Syntax:
Counter
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Definition:
The number of IP datagrams discarded because no route could be found to transmit them to their destination. Note that this counter includes any packets counted in ipForwDatagrams which meet this "no-route" criterion.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipReasmTimeout { ip 13 }
Syntax:
INTEGER
Definition:
The maximum number of seconds which received fragments are held while they are awaiting reassembly at this entity.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipReasmReqds { ip 14 }
Syntax:
Counter
Definition:
The number of IP fragments received which needed to be reassembled at this entity.
Access:
read-only.
Status:
mandatory.
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OBJECT:
-------
ipReasmOKs { ip 15 }
Syntax:
Counter
Definition:
The number of IP datagrams successfully re-assembled.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipReasmFails { ip 16 }
Syntax:
Counter
Definition:
The number of failures detected by the IP re-assembly algorithm (for whatever reason: timed out, errors, etc).
Note that this is not necessarily a count of discarded IP fragments since some algorithms (notably RFC 815's) can lose track of the number of fragments by combining them as they are received.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipFragOKs { ip 17 }
Syntax:
Counter
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Definition:
The number of IP datagrams that have been successfully fragmented at this entity.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipFragFails { ip 18 }
Syntax:
Counter
Definition:
The number of IP datagrams that have been discarded because they needed to be fragmented at this entity but could not be, e.g., because their "Don't Fragment" flag was set.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipFragCreates { ip 19 }
Syntax:
Counter
Definition:
The number of IP datagram fragments that have been generated as a result of fragmentation at this entity.
Access:
read-only.
Status:
mandatory.
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5.4.1. The IP Address Table
The Ip Address table contains this entity's IP addressing information.
OBJECT:
-------
ipAddrTable { ip 20 }
Syntax:
SEQUENCE OF IpAddrEntry
Definition:
The table of addressing information relevant to this entity's IP addresses.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipAddrEntry { ipAddrTable 1 }
Syntax:
IpAddrEntry ::= SEQUENCE {
ipAdEntAddr
IpAddress,
ipAdEntIfIndex
INTEGER,
ipAdEntNetMask
IpAddress,
ipAdEntBcastAddr
INTEGER
}
Definition:
The addressing information for one of this entity's IP addresses.
Access:
read-only.
McCloghrie & Rose [Page 33]
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Status:
mandatory.
OBJECT:
-------
ipAdEntAddr { ipAddrEntry 1 }
Syntax:
IpAddress
Definition:
The IP address to which this entry's addressing information pertains.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipAdEntIfIndex { ipAddrEntry 2 }
Syntax:
INTEGER
Definition:
The index value which uniquely identifies the interface to which this entry is applicable. The interface identified by a particular value of this index is the same interface as identified by the same value of ifIndex.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipAdEntNetMask { ipAddrEntry 3 }
McCloghrie & Rose [Page 34]
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Syntax:
IpAddress
Definition:
The subnet mask associated with the IP address of this entry. The value of the mask is an IP address with all the network bits set to 1 and all the hosts bits set to 0.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipAdEntBcastAddr { ipAddrEntry 4 }
Syntax:
INTEGER
Definition:
The value of the least-significant bit in the IP broadcast address used for sending datagrams on the (logical) interface associated with the IP address of this entry. For example, when the Internet standard all-ones broadcast address is used, the value will be 1.
Access:
read-only.
Status:
mandatory.
5.4.2. The IP Routing Table
The IP Routing Table contains an entry for each route presently known to this entity. Note that the action to be taken in response to a request to read a non-existent entry, is specific to the network management protocol being used.
OBJECT:
-------
ipRoutingTable { ip 21 }
McCloghrie & Rose [Page 35]
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Syntax:
SEQUENCE OF IpRouteEntry
Definition:
This entity's IP Routing table.
Access:
read-write.
Status:
mandatory.
OBJECT:
-------
ipRouteEntry { ipRoutingTable 1 }
Syntax:
IpRouteEntry ::= SEQUENCE {
ipRouteDest
IpAddress,
ipRouteIfIndex
INTEGER,
ipRouteMetric1
INTEGER,
ipRouteMetric2
INTEGER,
ipRouteMetric3
INTEGER,
ipRouteMetric4
INTEGER,
ipRouteNextHop
IpAddress,
ipRouteType
INTEGER,
ipRouteProto
INTEGER,
ipRouteAge
INTEGER
}
Definition:
A route to a particular destination.
Access:
read-write.
McCloghrie & Rose [Page 36]
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Status:
mandatory.
We now consider the individual components of each route in the IP Routing Table:
OBJECT:
-------
ipRouteDest { ipRouteEntry 1 }
Syntax:
IpAddress
Definition:
The destination IP address of this route. An entry with a value of 0.0.0.0 is considered a default route. Multiple such default routes can appear in the table, but access to such multiple entries is dependent on the table-access mechanisms defined by the network management protocol in use.
Access:
read-write.
Status:
mandatory.
OBJECT:
-------
ipRouteIfIndex { ipRouteEntry 2 }
Syntax:
INTEGER
Definition:
The index value which uniquely identifies the local interface through which the next hop of this route should be reached. The interface identified by a particular value of this index is the same interface as identified by the same value of ifIndex.
Access:
read-write.
Status:
mandatory.
McCloghrie & Rose [Page 37]
RFC 1066 MIB August 1988
OBJECT:
-------
ipRouteMetric1 { ipRouteEntry 3 }
Syntax:
INTEGER
Definition:
The primary routing metric for this route. The semantics of this metric are determined by the routing-protocol specified in the route's ipRouteProto value. If this metric is not used, its value should be set to -1.
Access:
read-write.
Status:
mandatory.
OBJECT:
-------
ipRouteMetric2 { ipRouteEntry 4 }
Syntax:
INTEGER
Definition:
An alternate routing metric for this route. The semantics of this metric are determined by the routing- protocol specified in the route's ipRouteProto value. If this metric is not used, its value should be set to -1.
Access:
read-write.
Status:
mandatory.
OBJECT:
-------
ipRouteMetric3 { ipRouteEntry 5 }
Syntax:
INTEGER
McCloghrie & Rose [Page 38]
RFC 1066 MIB August 1988
Definition:
An alternate routing metric for this route. The semantics of this metric are determined by the routing- protocol specified in the route's ipRouteProto value. If this metric is not used, its value should be set to -1.
Access:
read-write.
Status:
mandatory.
OBJECT:
-------
ipRouteMetric4 { ipRouteEntry 6 }
Syntax:
INTEGER
Definition:
An alternate routing metric for this route. The semantics of this metric are determined by the routing- protocol specified in the route's ipRouteProto value. If this metric is not used, its value should be set to -1.
Access:
read-write.
Status:
mandatory.
OBJECT:
-------
ipRouteNextHop { ipRouteEntry 7 }
Syntax:
IpAddress
Definition:
The IP address of the next hop of this route.
Access:
read-write.
Status:
mandatory.
McCloghrie & Rose [Page 39]
RFC 1066 MIB August 1988
OBJECT:
-------
ipRouteType { ipRouteEntry 8 }
Syntax:
INTEGER {
other(1), -- none of the following
invalid(2), -- an invalidated route
-- route to directly
direct(3), -- connected (sub-)network
-- route to a non-local
remote(4), -- host/network/sub-network
}
Definition:
The type of route.
Access:
read-write.
Status:
mandatory.
OBJECT:
-------
ipRouteProto { ipRouteEntry 9 }
Syntax:
INTEGER {
other(1), -- none of the following
-- non-protocol information, -- e.g., manually configured
local(2), -- entries
-- set via a network management
netmgmt(3), -- protocol
-- obtained via ICMP,
icmp(4), -- e.g., Redirect
-- the remaining values are -- all gateway routing protocols egp(5), ggp(6), hello(7), rip(8), is-is(9), es-is(10), ciscoIgrp(11), bbnSpfIgp(12), oigp(13)
McCloghrie & Rose [Page 40]
RFC 1066 MIB August 1988
}
Definition:
The routing mechanism via which this route was learned. Inclusion of values for gateway routing protocols is not intended to imply that hosts should support those protocols.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
ipRouteAge { ipRouteEntry 10 }
Syntax:
INTEGER
Definition:
The number of seconds since this route was last updated or otherwise determined to be correct. Note that no semantics of "too old" can be implied except through knowledge of the routing protocol by which the route was learned.
Access:
read-write.
Status:
mandatory.
McCloghrie & Rose [Page 41]
RFC 1066 MIB August 1988
5.5. The ICMP Group
Implementation of the ICMP group is mandatory for all systems.
The ICMP group contains the ICMP input and output statistics.
Note that individual counters for ICMP message (sub-)codes have been omitted from this (version of the) MIB for simplicity.
OBJECT:
-------
icmpInMsgs { icmp 1 }
Syntax:
Counter
Definition:
The total number of ICMP messages which the entity received. Note that this counter includes all those counted by icmpInErrors.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpInErrors { icmp 2 }
Syntax:
Counter
Definition:
The number of ICMP messages which the entity received but determined as having errors (bad ICMP checksums, bad length, etc.).
Access:
read-only.
Status:
mandatory.
McCloghrie & Rose [Page 42]
RFC 1066 MIB August 1988
OBJECT:
-------
icmpInDestUnreachs { icmp 3 }
Syntax:
Counter
Definition:
The number of ICMP Destination Unreachable messages received.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpInTimeExcds { icmp 4 }
Syntax:
Counter
Definition:
The number of ICMP Time Exceeded messages received.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpInParmProbs { icmp 5 }
Syntax:
Counter
Definition:
The number of ICMP Parameter Problem messages received.
Access:
read-only.
McCloghrie & Rose [Page 43]
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Status:
mandatory.
OBJECT:
-------
icmpInSrcQuenchs { icmp 6 }
Syntax:
Counter
Definition:
The number of ICMP Source Quench messages received.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpInRedirects { icmp 7 }
Syntax:
Counter
Definition:
The number of ICMP Redirect messages received.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpInEchos { icmp 8 }
Syntax:
Counter
Definition:
The number of ICMP Echo (request) messages received.
McCloghrie & Rose [Page 44]
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Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpInEchoReps { icmp 9 }
Syntax:
Counter
Definition:
The number of ICMP Echo Reply messages received.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpInTimestamps { icmp 10 }
Syntax:
Counter
Definition:
The number of ICMP Timestamp (request) messages received.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpInTimestampReps { icmp 11 }
Syntax:
Counter
McCloghrie & Rose [Page 45]
RFC 1066 MIB August 1988
Definition:
The number of ICMP Timestamp Reply messages received.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpInAddrMasks { icmp 12 }
Syntax:
Counter
Definition:
The number of ICMP Address Mask Request messages received.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpInAddrMaskReps { icmp 13 }
Syntax:
Counter
Definition:
The number of ICMP Address Mask Reply messages received.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpOutMsgs { icmp 14 }
McCloghrie & Rose [Page 46]
RFC 1066 MIB August 1988
Syntax:
Counter
Definition:
The total number of ICMP messages which this entity attempted to send. Note that this counter includes all those counted by icmpOutErrors.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpOutErrors { icmp 15 }
Syntax:
Counter
Definition:
The number of ICMP messages which this entity did not send due to problems discovered within ICMP such as a lack of buffers. This value should not include errors discovered outside the ICMP layer such as the inability of IP to route the resultant datagram. In some implementations there may be no types of error which contribute to this counter's value.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpOutDestUnreachs { icmp 16 }
Syntax:
Counter
Definition:
The number of ICMP Destination Unreachable messages sent.
McCloghrie & Rose [Page 47]
RFC 1066 MIB August 1988
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpOutTimeExcds { icmp 17 }
Syntax:
Counter
Definition:
The number of ICMP Time Exceeded messages sent.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpOutParmProbs { icmp 18 }
Syntax:
Counter
Definition:
The number of ICMP Parameter Problem messages sent.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpOutSrcQuenchs { icmp 19 }
Syntax:
Counter
McCloghrie & Rose [Page 48]
RFC 1066 MIB August 1988
Definition:
The number of ICMP Source Quench messages sent.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpOutRedirects { icmp 20 }
Syntax:
Counter
Definition:
The number of ICMP Redirect messages sent.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpOutEchos { icmp 21 }
Syntax:
Counter
Definition:
The number of ICMP Echo (request) messages sent.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpOutEchoReps { icmp 22 }
McCloghrie & Rose [Page 49]
RFC 1066 MIB August 1988
Syntax:
Counter
Definition:
The number of ICMP Echo Reply messages sent.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpOutTimestamps { icmp 23 }
Syntax:
Counter
Definition:
The number of ICMP Timestamp (request) messages sent.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpOutTimestampReps { icmp 24 }
Syntax:
Counter
Definition:
The number of ICMP Timestamp Reply messages sent.
Access:
read-only.
Status:
mandatory.
McCloghrie & Rose [Page 50]
RFC 1066 MIB August 1988
OBJECT:
-------
icmpOutAddrMasks { icmp 25 }
Syntax:
Counter
Definition:
The number of ICMP Address Mask Request messages sent.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
icmpOutAddrMaskReps { icmp 26 }
Syntax:
Counter
Definition:
The number of ICMP Address Mask Reply messages sent.
Access:
read-only.
Status:
mandatory.
McCloghrie & Rose [Page 51]
RFC 1066 MIB August 1988
5.6. The TCP Group
Implementation of the TCP group is mandatory for all systems that implement the TCP protocol.
Note that instances of object types that represent information about a particular TCP connection are transient; they persist only as long as the connection in question.
OBJECT:
-------
tcpRtoAlgorithm { tcp 1 }
Syntax:
INTEGER {
other(1), -- none of the following constant(2), -- a constant rto rsre(3), -- MIL-STD-1778, Appendix B vanj(4) -- Van Jacobson's algorithm [11]
}
Definition:
The algorithm used to determine the timeout value used for retransmitting unacknowledged octets.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
tcpRtoMin { tcp 2 }
Syntax:
INTEGER
Definition:
The minimum value permitted by a TCP implementation for the retransmission timeout, measured in milliseconds. More refined semantics for objects of this type depend upon the algorithm used to determine the retransmission timeout. In particular, when the timeout algorithm is rsre(3), an object of this type has the semantics of the LBOUND quantity described in RFC 793.
McCloghrie & Rose [Page 52]
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Access:
read-only.
Status:
mandatory.
OBJECT:
-------
tcpRtoMax { tcp 3 }
Syntax:
INTEGER
Definition:
The maximum value permitted by a TCP implementation for the retransmission timeout, measured in milliseconds. More refined semantics for objects of this type depend upon the algorithm used to determine the retransmission timeout. In particular, when the timeout algorithm is rsre(3), an object of this type has the semantics of the UBOUND quantity described in RFC 793.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
tcpMaxConn { tcp 4 }
Syntax:
INTEGER
Definition:
The limit on the total number of TCP connections the entity can support. In entities where the maximum number of connections is dynamic, this object should contain the value "-1".
Access:
read-only.
McCloghrie & Rose [Page 53]
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Status:
mandatory.
OBJECT:
-------
tcpActiveOpens { tcp 5 }
Syntax:
Counter
Definition:
The number of times TCP connections have made a direct transition to the SYN-SENT state from the CLOSED state.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
tcpPassiveOpens { tcp 6 }
Syntax:
Counter
Definition:
The number of times TCP connections have made a direct transition to the SYN-RCVD state from the LISTEN state.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
tcpAttemptFails { tcp 7 }
Syntax:
Counter
McCloghrie & Rose [Page 54]
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Definition:
The number of times TCP connections have made a direct transition to the CLOSED state from either the SYN-SENT state or the SYN-RCVD state, plus the number of times TCP connections have made a direct transition to the LISTEN state from the SYN-RCVD state.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
tcpEstabResets { tcp 8 }
Syntax:
Counter
Definition:
The number of times TCP connections have made a direct transition to the CLOSED state from either the ESTABLISHED state or the CLOSE-WAIT state.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
tcpCurrEstab { tcp 9 }
Syntax:
Gauge
Definition:
The number of TCP connections for which the current state is either ESTABLISHED or CLOSE-WAIT.
Access:
read-only.
McCloghrie & Rose [Page 55]
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Status:
mandatory.
OBJECT:
-------
tcpInSegs { tcp 10 }
Syntax:
Counter
Definition:
The total number of segments received, including those received in error. This count includes segments received on currently established connections.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
tcpOutSegs { tcp 11 }
Syntax:
Counter
Definition:
The total number of segments sent, including those on current connections but excluding those containing only retransmitted octets.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
tcpRetransSegs { tcp 12 }
Syntax:
Counter
McCloghrie & Rose [Page 56]
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Definition:
The total number of segments retransmitted - that is, the number of TCP segments transmitted containing one or more previously transmitted octets.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
tcpConnTable { tcp 13 }
Syntax:
SEQUENCE OF TcpConnEntry
Definition:
A table containing TCP connection-specific information.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
tcpConnEntry { tcpConnTable 1 }
Syntax:
TcpConnEntry ::= SEQUENCE {
tcpConnState
INTEGER,
tcpConnLocalAddress
IpAddress,
tcpConnLocalPort
INTEGER (0..65535),
tcpConnRemAddress
IpAddress,
tcpConnRemPort
INTEGER (0..65535)
}
McCloghrie & Rose [Page 57]
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Definition:
Information about a particular current TCP connection. An object of this type is transient, in that it ceases to exist when (or soon after) the connection makes the transition to the CLOSED state.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
tcpConnState { tcpConnEntry 1 }
Syntax:
INTEGER {
closed(1), listen(2), synSent(3), synReceived(4), established(5), finWait1(6), finWait2(7), closeWait(8), lastAck(9), closing(10), timeWait(11)
}
Definition:
The state of this TCP connection.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
tcpConnLocalAddress { tcpConnEntry 2 }
Syntax:
IpAddress
McCloghrie & Rose [Page 58]
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Definition:
The local IP address for this TCP connection.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
tcpConnLocalPort { tcpConnEntry 3 }
Syntax:
INTEGER (0..65535)
Definition:
The local port number for this TCP connection.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
tcpConnRemAddress { tcpConnEntry 4 }
Syntax:
IpAddress
Definition:
The remote IP address for this TCP connection.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
tcpConnRemPort { tcpConnEntry 5 }
McCloghrie & Rose [Page 59]
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Syntax:
INTEGER (0..65535)
Definition:
The remote port number for this TCP connection.
Access:
read-only.
Status:
mandatory.
McCloghrie & Rose [Page 60]
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5.7. The UDP Group
Implementation of the UDP group is mandatory for all systems which implement the UDP protocol.
OBJECT:
-------
udpInDatagrams { udp 1 }
Syntax:
Counter
Definition:
The total number of UDP datagrams delivered to UDP users.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
udpNoPorts { udp 2 }
Syntax:
Counter
Definition:
The total number of received UDP datagrams for which there was no application at the destination port.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
udpInErrors { udp 3 }
Syntax:
Counter
McCloghrie & Rose [Page 61]
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Definition:
The number of received UDP datagrams that could not be delivered for reasons other than the lack of an application at the destination port.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
udpOutDatagrams { udp 4 }
Syntax:
Counter
Definition:
The total number of UDP datagrams sent from this entity.
Access:
read-only.
Status:
mandatory.
McCloghrie & Rose [Page 62]
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5.8. The EGP Group
Implementation of the EGP group is mandatory for all systems which implement the EGP protocol.
OBJECT:
-------
egpInMsgs { egp 1 }
Syntax:
Counter
Definition:
The number of EGP messages received without error.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
egpInErrors { egp 2 }
Syntax:
Counter
Definition:
The number of EGP messages received that proved to be in error.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
egpOutMsgs { egp 3 }
Syntax:
Counter
McCloghrie & Rose [Page 63]
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Definition:
The total number of locally generated EGP messages.
Access:
read-only.
Status:
mandatory.
OBJECT:
-------
egpOutErrors { egp 4 }
Syntax:
Counter
Definition:
The number of locally generated EGP messages not sent due to resource limitations within an EGP entity.
Access:
read-only.
Status:
mandatory.
5.8.1. The EGP Neighbor Table
The Egp Neighbor table contains information about this entity's EGP neighbors.
OBJECT:
-------
egpNeighTable { egp 5 }
Syntax:
SEQUENCE OF EgpNeighEntry
Definition:
The EGP neighbor table.
Access:
read-only.
Status:
mandatory.
McCloghrie & Rose [Page 64]
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OBJECT:
-------
egpNeighEntry { egpNeighTable 1 }
Syntax:
EgpNeighEntry ::= SEQUENCE {
egpNeighState
INTEGER,
egpNeighAddr
IpAddress
}
Definition:
Information about this entity's relationship with a particular EGP neighbor.
Access:
read-only.
Status:
mandatory.
We now consider the individual components of each EGP neighbor entry:
OBJECT:
-------
egpNeighState { egpNeighEntry 1 }
Syntax:
INTEGER {
idle(1), acquisition(2), down(3), up(4), cease(5)
}
Definition:
The EGP state of the local system with respect to this entry's EGP neighbor. Each EGP state is represented by a value that is one greater than the numerical value associated with said state in RFC 904.
Access:
read-only.
McCloghrie & Rose [Page 65]
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Status:
mandatory.
OBJECT:
-------
egpNeighAddr { egpNeighEntry 2 }
Syntax:
IpAddress
Definition:
The IP address of this entry's EGP neighbor.
Access:
read-only.
Status:
mandatory.
McCloghrie & Rose [Page 66]
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6. Definitions
RFC1066-MIB { iso org(3) dod(6) internet(1) mgmt(2) 1 }
DEFINITIONS ::= BEGIN
IMPORTS mgmt, OBJECT-TYPE, NetworkAddress, IpAddress, Counter, Gauge, TimeTicks
FROM RFC1065-SMI;
mib OBJECT IDENTIFIER ::= { mgmt 1 }
system OBJECT IDENTIFIER ::= { mib 1 } interfaces OBJECT IDENTIFIER ::= { mib 2 } at OBJECT IDENTIFIER ::= { mib 3 } ip OBJECT IDENTIFIER ::= { mib 4 } icmp OBJECT IDENTIFIER ::= { mib 5 } tcp OBJECT IDENTIFIER ::= { mib 6 } udp OBJECT IDENTIFIER ::= { mib 7 } egp OBJECT IDENTIFIER ::= { mib 8 }
-- object types
-- the System group
sysDescr OBJECT-TYPE SYNTAX OCTET STRING ACCESS read-only STATUS mandatory ::= { system 1 }
sysObjectID OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER ACCESS read-only STATUS mandatory ::= { system 2 }
sysUpTime OBJECT-TYPE
SYNTAX TimeTicks ACCESS read-only STATUS mandatory ::= { system 3 }
-- the Interfaces group
ifNumber OBJECT-TYPE SYNTAX INTEGER ACCESS read-only STATUS mandatory ::= { interfaces 1 }
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-- the Interfaces table
ifTable OBJECT-TYPE SYNTAX SEQUENCE OF IfEntry ACCESS read-write STATUS mandatory ::= { interfaces 2 }
ifEntry OBJECT-TYPE
SYNTAX IfEntry ACCESS read-write STATUS mandatory ::= { ifTable 1 }
IfEntry ::= SEQUENCE {
ifIndex
INTEGER,
ifDescr
OCTET STRING,
ifType
INTEGER,
ifMtu
INTEGER,
ifSpeed
Gauge,
ifPhysAddress
OCTET STRING,
ifAdminStatus
INTEGER,
ifOperStatus
INTEGER,
ifLastChange
TimeTicks,
ifInOctets
Counter,
ifInUcastPkts
Counter,
ifInNUcastPkts
Counter,
ifInDiscards
Counter,
ifInErrors
Counter,
ifInUnknownProtos
McCloghrie & Rose [Page 68]
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Counter,
ifOutOctets
Counter,
ifOutUcastPkts
Counter,
ifOutNUcastPkts
Counter,
ifOutDiscards
Counter,
ifOutErrors
Counter,
ifOutQLen
Gauge
}
ifIndex OBJECT-TYPE SYNTAX INTEGER ACCESS read-only STATUS mandatory ::= { ifEntry 1 }
ifDescr OBJECT-TYPE
SYNTAX OCTET STRING ACCESS read-only STATUS mandatory ::= { ifEntry 2 }
ifType OBJECT-TYPE
SYNTAX INTEGER {
other(1), -- none of the following regular1822(2), hdh1822(3), ddn-x25(4), rfc877-x25(5), ethernet-csmacd(6), iso88023-csmacd(7), iso88024-tokenBus(8), iso88025-tokenRing(9), iso88026-man(10), starLan(11), proteon-10MBit(12), proteon-80MBit(13), hyperchannel(14), fddi(15), lapb(16), sdlc(17), t1-carrier(18), cept(19), basicIsdn(20), primaryIsdn(21),
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RFC 1066 MIB August 1988
-- proprietary serial
propPointToPointSerial(22)
}
ACCESS read-only STATUS mandatory ::= { ifEntry 3 }
ifMtu OBJECT-TYPE
SYNTAX INTEGER ACCESS read-only STATUS mandatory ::= { ifEntry 4 }
ifSpeed OBJECT-TYPE
SYNTAX Gauge ACCESS read-only STATUS mandatory ::= { ifEntry 5 }
ifPhysAddress OBJECT-TYPE
SYNTAX OCTET STRING ACCESS read-only STATUS mandatory ::= { ifEntry 6 }
ifAdminStatus OBJECT-TYPE
SYNTAX INTEGER {
up(1), -- ready to pass packets down(2), testing(3) -- in some test mode } ACCESS read-write STATUS mandatory ::= { ifEntry 7 }
ifOperStatus OBJECT-TYPE
SYNTAX INTEGER {
up(1), -- ready to pass packets down(2), testing(3) -- in some test mode } ACCESS read-only STATUS mandatory ::= { ifEntry 8 }
ifLastChange OBJECT-TYPE
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SYNTAX TimeTicks ACCESS read-only STATUS mandatory ::= { ifEntry 9 }
ifInOctets OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ifEntry 10 }
ifInUcastPkts OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ifEntry 11 }
ifInNUcastPkts OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ifEntry 12 }
ifInDiscards OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ifEntry 13 }
ifInErrors OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ifEntry 14 }
ifInUnknownProtos OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ifEntry 15 }
ifOutOctets OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ifEntry 16 }
ifOutUcastPkts OBJECT-TYPE
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RFC 1066 MIB August 1988
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ifEntry 17 }
ifOutNUcastPkts OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ifEntry 18 }
ifOutDiscards OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ifEntry 19 }
ifOutErrors OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ifEntry 20 }
ifOutQLen OBJECT-TYPE
SYNTAX Gauge ACCESS read-only STATUS mandatory ::= { ifEntry 21 }
-- the Address Translation group
atTable OBJECT-TYPE SYNTAX SEQUENCE OF AtEntry ACCESS read-write STATUS mandatory ::= { at 1 }
atEntry OBJECT-TYPE
SYNTAX AtEntry ACCESS read-write STATUS mandatory ::= { atTable 1 }
AtEntry ::= SEQUENCE {
atIfIndex
INTEGER,
atPhysAddress
OCTET STRING,
McCloghrie & Rose [Page 72]
RFC 1066 MIB August 1988
atNetAddress
NetworkAddress
}
atIfIndex OBJECT-TYPE SYNTAX INTEGER ACCESS read-write STATUS mandatory ::= { atEntry 1 }
atPhysAddress OBJECT-TYPE
SYNTAX OCTET STRING ACCESS read-write STATUS mandatory ::= { atEntry 2 }
atNetAddress OBJECT-TYPE
SYNTAX NetworkAddress ACCESS read-write STATUS mandatory ::= { atEntry 3 }
-- the IP group
ipForwarding OBJECT-TYPE
SYNTAX INTEGER {
gateway(1), -- entity forwards datagrams host(2) -- entity does NOT forward datagrams
}
ACCESS read-only STATUS mandatory ::= { ip 1 }
ipDefaultTTL OBJECT-TYPE
SYNTAX INTEGER ACCESS read-write STATUS mandatory ::= { ip 2 }
ipInReceives OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ip 3 }
ipInHdrErrors OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ip 4 }
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ipInAddrErrors OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ip 5 }
ipForwDatagrams OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ip 6 }
ipInUnknownProtos OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ip 7 }
ipInDiscards OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ip 8 }
ipInDelivers OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ip 9 }
ipOutRequests OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ip 10 }
ipOutDiscards OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ip 11 }
ipOutNoRoutes OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ip 12 }
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RFC 1066 MIB August 1988
ipReasmTimeout OBJECT-TYPE
SYNTAX INTEGER ACCESS read-only STATUS mandatory ::= { ip 13 }
ipReasmReqds OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ip 14 }
ipReasmOKs OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ip 15 }
ipReasmFails OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ip 16 }
ipFragOKs OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ip 17 }
ipFragFails OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ip 18 }
ipFragCreates OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { ip 19 }
-- the IP Interface table
ipAddrTable OBJECT-TYPE SYNTAX SEQUENCE OF IpAddrEntry ACCESS read-only STATUS mandatory ::= { ip 20 }
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RFC 1066 MIB August 1988
ipAddrEntry OBJECT-TYPE
SYNTAX IpAddrEntry ACCESS read-only STATUS mandatory ::= { ipAddrTable 1 }
IpAddrEntry ::= SEQUENCE {
ipAdEntAddr
IpAddress,
ipAdEntIfIndex
INTEGER,
ipAdEntNetMask
IpAddress,
ipAdEntBcastAddr
INTEGER
}
ipAdEntAddr OBJECT-TYPE SYNTAX IpAddress ACCESS read-only STATUS mandatory ::= { ipAddrEntry 1 }
ipAdEntIfIndex OBJECT-TYPE
SYNTAX INTEGER ACCESS read-only STATUS mandatory ::= { ipAddrEntry 2 }
ipAdEntNetMask OBJECT-TYPE
SYNTAX IpAddress ACCESS read-only STATUS mandatory ::= { ipAddrEntry 3 }
ipAdEntBcastAddr OBJECT-TYPE
SYNTAX INTEGER ACCESS read-only STATUS mandatory ::= { ipAddrEntry 4 }
-- the IP Routing table ipRoutingTable OBJECT-TYPE SYNTAX SEQUENCE OF IpRouteEntry ACCESS read-write STATUS mandatory ::= { ip 21 }
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RFC 1066 MIB August 1988
ipRouteEntry OBJECT-TYPE
SYNTAX IpRouteEntry ACCESS read-write STATUS mandatory ::= { ipRoutingTable 1 }
IpRouteEntry ::= SEQUENCE {
ipRouteDest
IpAddress,
ipRouteIfIndex
INTEGER,
ipRouteMetric1
INTEGER,
ipRouteMetric2
INTEGER,
ipRouteMetric3
INTEGER,
ipRouteMetric4
INTEGER,
ipRouteNextHop
IpAddress,
ipRouteType
INTEGER,
ipRouteProto
INTEGER,
ipRouteAge
INTEGER
}
ipRouteDest OBJECT-TYPE SYNTAX IpAddress ACCESS read-write STATUS mandatory ::= { ipRouteEntry 1 }
ipRouteIfIndex OBJECT-TYPE
SYNTAX INTEGER ACCESS read-write STATUS mandatory ::= { ipRouteEntry 2 }
ipRouteMetric1 OBJECT-TYPE
McCloghrie & Rose [Page 77]
RFC 1066 MIB August 1988
SYNTAX INTEGER ACCESS read-write STATUS mandatory ::= { ipRouteEntry 3 }
ipRouteMetric2 OBJECT-TYPE
SYNTAX INTEGER ACCESS read-write STATUS mandatory ::= { ipRouteEntry 4 }
ipRouteMetric3 OBJECT-TYPE
SYNTAX INTEGER ACCESS read-write STATUS mandatory ::= { ipRouteEntry 5 }
ipRouteMetric4 OBJECT-TYPE
SYNTAX INTEGER ACCESS read-write STATUS mandatory ::= { ipRouteEntry 6 }
ipRouteNextHop OBJECT-TYPE
SYNTAX IpAddress ACCESS read-write STATUS mandatory ::= { ipRouteEntry 7 }
ipRouteType OBJECT-TYPE
SYNTAX INTEGER {
other(1), -- none of the following
invalid(2), -- an invalidated route
-- route to directly
direct(3), -- connected (sub-)network
-- route to a non-local
remote(4), -- host/network/sub-network
}
ACCESS read-write STATUS mandatory ::= { ipRouteEntry 8 }
ipRouteProto OBJECT-TYPE
SYNTAX INTEGER {
other(1), -- none of the following
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RFC 1066 MIB August 1988
-- non-protocol information -- e.g., manually
local(2), -- configured entries
-- set via a network
netmgmt(3), -- management protocol
-- obtained via ICMP,
icmp(4), -- e.g., Redirect
-- the following are -- gateway routing protocols egp(5), ggp(6), hello(7), rip(8), is-is(9), es-is(10), ciscoIgrp(11), bbnSpfIgp(12), oigp(13)
}
ACCESS read-only STATUS mandatory ::= { ipRouteEntry 9 }
ipRouteAge OBJECT-TYPE
SYNTAX INTEGER ACCESS read-write STATUS mandatory ::= { ipRouteEntry 10 }
-- the ICMP group
icmpInMsgs OBJECT-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 1 }
icmpInErrors OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 2 }
icmpInDestUnreachs OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 3 }
McCloghrie & Rose [Page 79]
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icmpInTimeExcds OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 4 }
icmpInParmProbs OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 5 }
icmpInSrcQuenchs OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 6 }
icmpInRedirects OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 7 }
icmpInEchos OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 8 }
icmpInEchoReps OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 9 }
icmpInTimestamps OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 10 }
icmpInTimestampReps OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 11 }
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RFC 1066 MIB August 1988
icmpInAddrMasks OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 12 }
icmpInAddrMaskReps OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 13 }
icmpOutMsgs OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 14 }
icmpOutErrors OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 15 }
icmpOutDestUnreachs OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 16 }
icmpOutTimeExcds OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 17 }
icmpOutParmProbs OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 18 }
icmpOutSrcQuenchs OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 19 }
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RFC 1066 MIB August 1988
icmpOutRedirects OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 20 }
icmpOutEchos OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 21 }
icmpOutEchoReps OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 22 }
icmpOutTimestamps OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 23 }
icmpOutTimestampReps OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 24 }
icmpOutAddrMasks OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 25 }
icmpOutAddrMaskReps OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { icmp 26 }
-- the TCP group tcpRtoAlgorithm OBJECT-TYPE SYNTAX INTEGER { other(1), -- none of the following constant(2), -- a constant rto rsre(3), -- MIL-STD-1778, Appendix B vanj(4) -- Van Jacobson's algorithm [11]
McCloghrie & Rose [Page 82]
RFC 1066 MIB August 1988
}
ACCESS read-only STATUS mandatory ::= { tcp 1 }
tcpRtoMin OBJECT-TYPE
SYNTAX INTEGER ACCESS read-only STATUS mandatory ::= { tcp 2 }
tcpRtoMax OBJECT-TYPE
SYNTAX INTEGER ACCESS read-only STATUS mandatory ::= { tcp 3 }
tcpMaxConn OBJECT-TYPE
SYNTAX INTEGER ACCESS read-only STATUS mandatory ::= { tcp 4 }
tcpActiveOpens OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { tcp 5 }
tcpPassiveOpens OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { tcp 6 }
tcpAttemptFails OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { tcp 7 }
tcpEstabResets OBJECT-TYPE
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RFC 1066 MIB August 1988
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { tcp 8 }
tcpCurrEstab OBJECT-TYPE
SYNTAX Gauge ACCESS read-only STATUS mandatory ::= { tcp 9 }
tcpInSegs OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { tcp 10 }
tcpOutSegs OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { tcp 11 }
tcpRetransSegs OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { tcp 12 }
-- the TCP connections table
tcpConnTable OBJECT-TYPE SYNTAX SEQUENCE OF TcpConnEntry ACCESS read-only STATUS mandatory ::= { tcp 13 }
tcpConnEntry OBJECT-TYPE
SYNTAX TcpConnEntry ACCESS read-only STATUS mandatory ::= { tcpConnTable 1 }
TcpConnEntry ::= SEQUENCE {
tcpConnState
INTEGER,
tcpConnLocalAddress
IpAddress,
McCloghrie & Rose [Page 84]
RFC 1066 MIB August 1988
tcpConnLocalPort
INTEGER (0..65535),
tcpConnRemAddress
IpAddress,
tcpConnRemPort
INTEGER (0..65535)
}
tcpConnState OBJECT-TYPE
SYNTAX INTEGER {
closed(1), listen(2), synSent(3), synReceived(4), established(5), finWait1(6), finWait2(7), closeWait(8), lastAck(9), closing(10), timeWait(11)
}
ACCESS read-only STATUS mandatory ::= { tcpConnEntry 1 }
tcpConnLocalAddress OBJECT-TYPE
SYNTAX IpAddress ACCESS read-only STATUS mandatory ::= { tcpConnEntry 2 }
tcpConnLocalPort OBJECT-TYPE
SYNTAX INTEGER (0..65535) ACCESS read-only STATUS mandatory ::= { tcpConnEntry 3 }
tcpConnRemAddress OBJECT-TYPE
SYNTAX IpAddress ACCESS read-only STATUS mandatory ::= { tcpConnEntry 4 }
tcpConnRemPort OBJECT-TYPE
SYNTAX INTEGER (0..65535) ACCESS read-only STATUS mandatory ::= { tcpConnEntry 5 }
McCloghrie & Rose [Page 85]
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-- the UDP group
udpInDatagrams OBJECT-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory ::= { udp 1 }
udpNoPorts OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { udp 2 }
udpInErrors OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { udp 3 }
udpOutDatagrams OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { udp 4 }
-- the EGP group
egpInMsgs OBJECT-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory ::= { egp 1 }
egpInErrors OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { egp 2 }
egpOutMsgs OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { egp 3 }
McCloghrie & Rose [Page 86]
RFC 1066 MIB August 1988
egpOutErrors OBJECT-TYPE
SYNTAX Counter ACCESS read-only STATUS mandatory ::= { egp 4 }
-- the EGP Neighbor table
egpNeighTable OBJECT-TYPE SYNTAX SEQUENCE OF EgpNeighEntry ACCESS read-only STATUS mandatory ::= { egp 5 }
egpNeighEntry OBJECT-TYPE
SYNTAX EgpNeighEntry ACCESS read-only STATUS mandatory ::= { egpNeighTable 1 }
EgpNeighEntry ::= SEQUENCE {
egpNeighState
INTEGER,
egpNeighAddr
IpAddress
}
egpNeighState OBJECT-TYPE
SYNTAX INTEGER {
idle(1), acquisition(2), down(3), up(4), cease(5)
}
ACCESS read-only STATUS mandatory ::= { egpNeighEntry 1 }
egpNeighAddr OBJECT-TYPE
SYNTAX IpAddress ACCESS read-only STATUS mandatory ::= { egpNeighEntry 2 }
END
McCloghrie & Rose [Page 87]
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7. Acknowledgements
The initial draft of this memo was heavily influenced by the the HEMS [5] and SNMP [6] MIBs.
Its final form is the result of the suggestions, the dicussions, and the compromises reached by the members of the IETF MIB working group:
Karl Auerbach, Epilogue Technology K. Ramesh Babu, Excelan Lawrence Besaw, Hewlett-Packard Jeffrey D. Case, University of Tennessee at Knoxville James R. Davin, Proteon Mark S. Fedor, NYSERNet Robb Foster, BBN Phill Gross, The MITRE Corporation Bent Torp Jensen, Convergent Technology Lee Labarre, The MITRE Corporation Dan Lynch, Advanced Computing Environments Keith McCloghrie, The Wollongong Group Dave Mackie, 3Com/Bridge Craig Partridge, BBN (chair) Jim Robertson, 3Com/Bridge Marshall T. Rose, The Wollongong Group Greg Satz, cisco Martin Lee Schoffstall, Rensselaer Polytechnic Institute Lou Steinberg, IBM Dean Throop, Data General Unni Warrier, Unisys
McCloghrie & Rose [Page 88]
RFC 1066 MIB August 1988
8. References
[1] Cerf, V., "IAB Recommendations for the Development of Internet
Network Management Standards", RFC 1052, IAB, April 1988.
[2] Information processing systems - Open Systems Interconnection,
"Management Information Services Definition", International Organization for Standardization, Draft Proposal 9595/2, December 1987.
[3] Information processing systems - Open Systems Interconnection,
"Management Information Protocol Specification", International Organization for Standardization, Draft Proposal 9596/2, December 1987.
[4] Rose M., and K. McCloghrie, "Structure and Identification of
Management Information for TCP/IP-based internets", RFC 1065, TWG, August 1988.
[5] Partridge C., and G. Trewitt, "The High-Level Entity Management
System (HEMS)", RFCs 1021-1024, BBN and Stanford, October 1987.
[6] Case, J., M. Fedor, M. Schoffstall, and J. Davin, "A Simple
Network Management Protocol", RFC 1067, University of Tennessee At Knoxville, NYSERNet, Rensselaer Polytechnic, Proteon, August 1988.
[7] LaBarre, L., "Structure and Identification of Management
Information for the Internet", Internet Engineering Task Force working note, Network Information Center, SRI International, Menlo Park, California, April 1988.
[8] LaBarre, L., "Transport Layer Management Information: TCP",
Internet Engineering Task Force working note in preparation. Network Information Center, SRI International, Menlo Park, California, (unpublished).
[9] Information processing systems - Open Systems Interconnection,
"Specification of Abstract Syntax Notation One (ASN.1)", International Organization for Standardization, International Standard 8824, December 1987.
[10] 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.
[11] Jacobson, V., "Congestion Avoidance and Control", SIGCOMM, 1988,
McCloghrie & Rose [Page 89]
RFC 1066 MIB August 1988
Stanford, California.
McCloghrie & Rose [Page 90]
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