RFC 1253
OSPF Version 2 Management Information Base
Network Working Group F. Baker Request for Comments: 1253 ACC Obsoletes: RFC 1252 R. Coltun Computer Science Center August 1991 OSPF Version 2 Management Information Base Status of this Memo This RFC specifies an IAB standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "IAB Official Protocol Standards" for the standardization state and status of this protocol. This memo replaces RFC 1252 which contained an error in the "standard-mib" number assignment in Section 5. Distribution of this memo is unlimited. Table of Contents 1. Abstract ............................................. 2 2. The Network Management Framework...................... 2 3. Objects .............................................. 2 3.1 Format of Definitions ............................... 3 4. Overview ............................................. 3 4.1 Textual Conventions ................................. 3 4.2 Structure of MIB .................................... 3 4.2.1 General Variables ................................. 4 4.2.2 Area Data Structure and Area Stub Metric Table .... 4 4.2.3 Link State Database ............................... 4 4.2.4 Address Table and Host Tables ..................... 4 4.2.5 Interface and Interface Metric Tables ............. 4 4.2.6 Virtual Interface Table ........................... 4 4.2.7 Neighbor and Virtual Neighbor Tables .............. 4 4.3 Conceptual Row Creation ............................. 5 4.4 Default Configuration ............................... 5 5. Definitions .......................................... 7 5.1 OSPF General Variables .............................. 8 5.2 OSPF Area Data Structure ............................ 11 5.3 OSPF Area Default Metric Table ...................... 14 5.4 OSPF Link State Database ............................ 16 5.5 OSPF Address Range Table ............................ 19 5.6 OSPF Host Table ..................................... 21 5.7 OSPF Interface Table ................................ 23 5.8 OSPF Interface Metric Table ......................... 28 5.9 OSPF Virtual Interface Table ........................ 31 5.10 OSPF Neighbor Table ................................ 34
5.11 OSPF Virtual Neighbor Table ........................ 38 6. Acknowledgements ..................................... 40 7. References ........................................... 40 8. Security Considerations............................... 41 9. Authors' Addresses.................................... 42 1. Abstract This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in TCP/IP-based internets. In particular, it defines objects for managing OSPF Version 2. 2. The Network Management Framework The Internet-standard Network Management Framework consists of three components. They are: RFC 1155 which 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 which defines MIB-I, the core set of managed objects for the Internet suite of protocols. RFC 1213, defines MIB-II, an evolution of MIB-I based on implementation experience and new operational requirements. RFC 1157 which defines the SNMP, the protocol used for network access to managed objects. The Framework permits new objects to be defined for the purpose of experimentation and evaluation. 3. 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) [7] 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 [3] 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 [8], subject to the additional requirements imposed by the SNMP. 3.1. Format of Definitions Section 5 contains contains the specification of all object types contained in this MIB module. The object types are defined using the conventions defined in the SMI, as amended by the extensions specified in [9]. 4. Overview 4.1. Textual Conventions Several new data types are introduced as a textual convention in this MIB document. These textual conventions enhance the readability of the specification and can ease comparison with other specifications if appropriate. It should be noted that the introduction of the these textual conventions has no effect on either the syntax nor the semantics of any managed objects. The use of these is merely an artifact of the explanatory method used. Objects defined in terms of one of these methods are always encoded by means of the rules that define the primitive type. Hence, no changes to the SMI or the SNMP are necessary to accommodate these textual conventions which are adopted merely for the convenience of readers and writers in pursuit of the elusive goal of clear, concise, and unambiguous MIB documents. The new data types are AreaID, RouterID, TOSType, Metric, BigMetric, TruthValue, Status, Validation, PositiveInteger, HelloRange, UpToMaxAge, InterfaceIndex, and DesignatedRouterPriority. 4.2. Structure of MIB The MIB is composed of the following sections: General Variables Area Data Structure Area Stub Metric Table Link State Database
Address Range Table
Host Table
Interface Table
Interface Metric Table
Virtual Interface Table
Neighbor Table
Virtual Neighbor Table
4.2.1. General Variables
The General Variables are about what they sound like; variables which
are global to the OSPF Process.
4.2.2. Area Data Structure and Area Stub Metric Table
The Area Data Structure describes the OSPF Areas that the router
participates in. The Area Stub Metric Table describes the metrics
advertised into a stub area by the default router(s).
4.2.3. Link State Database
The Link State Database is provided primarily to provide detailed
information for network debugging.
4.2.4. Address Table and Host Tables
The Address Range Table and Host Table are provided to view
configured Network Summary and Host Route information.
4.2.5. Interface and Interface Metric Tables
The Interface Table and the Interface Metric Table together describe
the various IP interfaces to OSPF. The metrics are placed in
separate tables in order to simplify dealing with multiple types of
service, and to provide flexibility in the event that the IP TOS
definition is changed in the future. A Default Value specification
is supplied for the TOS 0 (default) metric.
4.2.6. Virtual Interface Table
Likewise, the Virtual Interface Table describe virtual links to the
OSPF Process.
4.2.7. Neighbor and Virtual Neighbor Tables
The Neighbor Table and the Virtual Neighbor Table describe the
neighbors to the OSPF Process.
4.3. Conceptual Row Creation For the benefit of row-creation in "conceptual" (see [9]) tables, DEFVAL (Default Value) clauses are included in the definitions in section 5, suggesting values which an agent should use for instances of variables which need to be created due to a Set-Request, but which are not specified in the Set- Request. DEFVAL clauses have not been specified for some objects which are read-only, implying that they are zeroed upon row creation. These objects are of the SYNTAX Counter or Gauge. For those objects not having a DEFVAL clause, both management stations and agents should heed the Robustness Principle of the Internet (see RFC-791): "be liberal in what you accept, conservative in what you send" That is, management stations should include as many of these columnar objects as possible (e.g., all read-write objects) in a Set-Request when creating a conceptual row; agents should accept a Set-Request with as few of these as they need (e.g., the minimum contents of a row creating SET consists of those objects for which, as they cannot be intuited, no default is specified.). There are numerous read-write objects in this MIB, as it is designed for SNMP management of the protocol, not just SNMP monitoring of its state. However, in the absence of a standard SNMP Security architecture, it is acceptable for implementations to implement these as read-only with an alternative interface for their modification. 4.4. Default Configuration OSPF is a powerful routing protocol, equipped with features to handle virtually any configuration requirement that might reasonably be found within an Autonomous System. With this power comes a fair degree of complexity, which the sheer number of objects in the MIB will attest to. Care has therefore been taken, in constructing this MIB, to define default values for virtually every object, to minimize the amount of parameterization required in the typical case. That default configuration is as follows: Given the following assumptions: - IP has already been configured - The ifTable has already been configured
- ifSpeed is estimated by the interface drivers
- The OSPF Process automatically discovers all IP
Interfaces and creates corresponding OSPF Interfaces
- The TOS 0 metrics are autonomously derived from
ifSpeed
- The OSPF Process automatically creates the Areas
required for the Interfaces
The simplest configuration of an OSPF process requires that:
- The OSPF Process be Enabled.
This can be accomplished with a single SET:
ospfAdminStat := enabled.
The configured system will have the following attributes:
- The RouterID will be one of the IP addresses of the
device
- The device will be neither an Area Border Router nor
an Autonomous System Border Router.
- Every IP Interface, with or without an address, will
be an OSPF Interface.
- The AreaID of each interface will be 0.0.0.0, the
Backbone.
- Authentication will be disabled
- All Broadcast and Point to Point interfaces will be
operational. NBMA Interfaces require the configuration
of at least one neighbor.
- Timers on all direct interfaces will be:
Hello Interval: 10 seconds
Dead Timeout: 40 Seconds
Retransmission: 5 Seconds
Transit Delay: 1 Second
Poll Interval: 120 Seconds
- no direct links to hosts will be configured.
- no addresses will be summarized
- Metrics, being a measure of bit duration, are
unambiguous and intelligent.
- No Virtual Links will be configured.
5. Definitions
RFC1253-MIB DEFINITIONS ::= BEGIN
IMPORTS
Counter, Gauge, IpAddress
FROM RFC1155-SMI
mib-2
FROM RFC1213-MIB
OBJECT-TYPE
FROM RFC-1212;
-- This MIB module uses the extended OBJECT-TYPE macro as
-- defined in [9].
ospf OBJECT IDENTIFIER ::= { mib-2 14 }
-- The Area ID, in OSPF, has the same format as an IP Address,
-- but has the function of defining a summarization point for
-- Link State Advertisements
AreaID ::= IpAddress
-- The Router ID, in OSPF, has the same format as an IP Address,
-- but identifies the router independent of its IP Address.
RouterID ::= IpAddress
-- The OSPF Metric is defined as an unsigned value in the range
Metric ::= INTEGER (1..'FFFF'h)
BigMetric ::= INTEGER (1..'FFFFFF'h)
-- Boolean Values
TruthValue ::= INTEGER { true (1), false (2) }
-- Status Values
Status ::= INTEGER { enabled (1), disabled (2) }
-- Row Creation/Deletion Values
Validation ::= INTEGER { valid (1), invalid (2) }
-- Time Durations measured in seconds
PositiveInteger ::= INTEGER (1..'FFFFFFFF'h)
HelloRange ::= INTEGER (1..'FFFF'h)
UpToMaxAge ::= INTEGER (1..3600)
-- The range of ifIndex, i.e. (1..ifNumber)
InterfaceIndex ::= INTEGER
-- Potential Priorities for the Designated Router Election
DesignatedRouterPriority ::= INTEGER (0..'FF'h)
-- Type of Service is defined as a mapping to the IP Type of
-- Service Flags as defined in the Router Requirements
-- Document:
--
-- D => Low Delay R => Reliable Route
-- T => High Bandwidth
-- D T R TOS D T R TOS
-- 0 0 0 => 0 0 0 1 => 4
-- 0 1 0 => 8 0 1 1 => 12
-- 1 0 0 => 16 1 0 1 => 20
-- 1 1 0 => 24 1 1 1 => 28
-- The remaining values are left for future definition.
TOSType ::= INTEGER (0..31)
-- OSPF General Variables
-- These parameters apply globally to the Router's
-- OSPF Process.
ospfGeneralGroup OBJECT IDENTIFIER ::= { ospf 1 }
ospfRouterId OBJECT-TYPE
SYNTAX RouterID
ACCESS read-write
STATUS mandatory
DESCRIPTION
"A 32-bit integer uniquely identifying the router in
the Autonomous System.
By convention, to ensure uniqueness, this should
default to the value of one of the router's IP
interface addresses."
REFERENCE
"OSPF Version 2, C.1 Global parameters"
::= { ospfGeneralGroup 1 }
ospfAdminStat OBJECT-TYPE
SYNTAX Status
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The administrative status of OSPF in the router. The
value 'enabled' denotes that the OSPF Process is active
on at least one interface; 'disabled' disables it on
all interfaces."
::= { ospfGeneralGroup 2 }
ospfVersionNumber OBJECT-TYPE
SYNTAX INTEGER { version2 (2) }
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The current version number of the OSPF protocol is 2."
REFERENCE
"OSPF Version 2, Title"
::= { ospfGeneralGroup 3 }
ospfAreaBdrRtrStatus OBJECT-TYPE
SYNTAX TruthValue
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A flag to note whether this router is an area border
router."
REFERENCE
"OSPF Version 2, Section 3 Splitting the AS into Areas"
::= { ospfGeneralGroup 4 }
ospfASBdrRtrStatus OBJECT-TYPE
SYNTAX TruthValue
ACCESS read-write
STATUS mandatory
DESCRIPTION
"A flag to note whether this router is an Autonomous
System border router."
REFERENCE
"OSPF Version 2, Section 3.3 Classification of routers"
::= { ospfGeneralGroup 5 }
ospfExternLSACount OBJECT-TYPE
SYNTAX Gauge
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of external (LS type 5) link-state
advertisements in the link-state database."
REFERENCE
"OSPF Version 2, Appendix A.4.5 AS external link
advertisements"
::= { ospfGeneralGroup 6 }
ospfExternLSACksumSum OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The 32-bit unsigned sum of the LS checksums of the
external link-state advertisements contained in the
link-state database. This sum can be used to determine
if there has been a change in a router's link state
database, and to compare the link-state database of two
routers."
::= { ospfGeneralGroup 7 }
ospfTOSSupport OBJECT-TYPE
SYNTAX TruthValue
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The router's support for type-of-service routing."
REFERENCE
"OSPF Version 2, Appendix F.1.2 Optional TOS support"
::= { ospfGeneralGroup 8 }
ospfOriginateNewLSAs OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of new link-state advertisements that have
been originated. This number is incremented each time
the router originates a new LSA."
::= { ospfGeneralGroup 9 }
ospfRxNewLSAs OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of link-state advertisements received
determined to be new instantiations. This number does
not include newer instantiations of self-originated
link-state advertisements."
::= { ospfGeneralGroup 10 }
-- The OSPF Area Data Structure contains information
-- regarding the various areas. The interfaces and
-- virtual links are configured as part of these areas.
-- Area 0.0.0.0, by definition, is the Backbone Area
ospfAreaTable OBJECT-TYPE
SYNTAX SEQUENCE OF OspfAreaEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Information describing the configured parameters and
cumulative statistics of the router's attached areas."
REFERENCE
"OSPF Version 2, Section 6 The Area Data Structure"
::= { ospf 2 }
ospfAreaEntry OBJECT-TYPE
SYNTAX OspfAreaEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Information describing the configured parameters and
cumulative statistics of one of the router's attached
areas."
INDEX { ospfAreaID }
::= { ospfAreaTable 1 }
OspfAreaEntry ::=
SEQUENCE {
ospfAreaId
AreaID,
ospfAuthType
INTEGER,
ospfImportASExtern
TruthValue,
ospfSpfRuns
Counter,
ospfAreaBdrRtrCount
Gauge,
ospfASBdrRtrCount
Gauge,
ospfLSACount
Gauge,
ospfAreaLSACksumSum
INTEGER
}
ospfAreaId OBJECT-TYPE
SYNTAX AreaID
ACCESS read-write
STATUS mandatory
DESCRIPTION
"A 32-bit integer uniquely identifying an area. Area
ID 0.0.0.0 is used for the OSPF backbone."
REFERENCE
"OSPF Version 2, Appendix C.2 Area parameters"
::= { ospfAreaEntry 1 }
ospfAuthType OBJECT-TYPE
SYNTAX INTEGER
-- none (0),
-- simplePassword (1)
-- reserved for specification by IANA (> 1)
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The authentication type specified for an area.
Additional authentication types may be assigned locally
on a per Area basis."
REFERENCE
"OSPF Version 2, Appendix E Authentication"
DEFVAL { 0 } -- no authentication, by default
::= { ospfAreaEntry 2 }
ospfImportASExtern OBJECT-TYPE
SYNTAX TruthValue
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The area's support for importing AS external link-
state advertisements."
REFERENCE
"OSPF Version 2, Appendix C.2 Area parameters"
DEFVAL { true }
::= { ospfAreaEntry 3 }
ospfSpfRuns OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of times that the intra-area route table
has been calculated using this area's link-state
database. This is typically done using Dijkstra's
algorithm."
DEFVAL { 0 }
::= { ospfAreaEntry 4 }
ospfAreaBdrRtrCount OBJECT-TYPE
SYNTAX Gauge
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total number of area border routers reachable
within this area. This is initially zero, and is
calculated in each SPF Pass."
DEFVAL { 0 }
::= { ospfAreaEntry 5 }
ospfASBdrRtrCount OBJECT-TYPE
SYNTAX Gauge
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total number of Autonomous System border routers
reachable within this area. This is initially zero,
and is calculated in each SPF Pass."
DEFVAL { 0 }
::= { ospfAreaEntry 6 }
ospfAreaLSACount OBJECT-TYPE
SYNTAX Gauge
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total number of link-state advertisements in this
area's link-state database, excluding AS External
LSA's."
DEFVAL { 0 }
::= { ospfAreaEntry 7 }
ospfAreaLSACksumSum OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The 32-bit unsigned sum of the link-state
advertisements' LS checksums contained in this area's
link-state database. This sum excludes external (LS
type 5) link-state advertisements. The sum can be used
to determine if there has been a change in a router's
link state database, and to compare the link-state
database of two routers."
DEFVAL { 0 }
::= { ospfAreaEntry 8 }
-- OSPF Area Default Metric Table
-- The OSPF Area Default Metric Table describes the metrics
-- that a default Area Border Router will advertise into a
-- Stub area.
ospfStubAreaTable OBJECT-TYPE
SYNTAX SEQUENCE OF OspfStubAreaEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"The set of metrics that will be advertised by a
default Area Border Router into a stub area."
REFERENCE
"OSPF Version 2, Appendix C.2, Area Parameters"
::= { ospf 3 }
ospfStubAreaEntry OBJECT-TYPE
SYNTAX OspfStubAreaEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"The metric for a given Type of Service that will be
advertised by a default Area Border Router into a stub
area."
REFERENCE
"OSPF Version 2, Appendix C.2, Area Parameters"
INDEX { ospfStubAreaID, ospfStubTOS }
::= { ospfStubAreaTable 1 }
OspfStubAreaEntry ::=
SEQUENCE {
ospfStubAreaID
AreaID,
ospfStubTOS
TOSType,
ospfStubMetric
BigMetric,
ospfStubStatus
Validation
}
ospfStubAreaID OBJECT-TYPE
SYNTAX AreaID
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The 32 bit identifier for the Stub Area. On creation,
this can be derived from the instance."
::= { ospfStubAreaEntry 1 }
ospfStubTOS OBJECT-TYPE
SYNTAX TOSType
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The Type of Service associated with the metric. On
creation, this can be derived from the instance."
::= { ospfStubAreaEntry 2 }
ospfStubMetric OBJECT-TYPE
SYNTAX BigMetric
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The metric value applied at the indicated type of
service. By default, this equals the least metric at
the type of service among the interfaces to other
areas."
::= { ospfStubAreaEntry 3 }
ospfStubStatus OBJECT-TYPE
SYNTAX Validation
ACCESS read-write
STATUS mandatory
DESCRIPTION
"This variable displays the validity or invalidity of
the entry. Setting it to 'invalid' has the effect of
rendering it inoperative. The internal effect (row
removal) is implementation dependent."
DEFVAL { valid }
::= { ospfStubAreaEntry 4 }
-- OSPF Link State Database
-- The Link State Database contains the Link State
-- Advertisements from throughout the areas that the
-- device is attached to.
ospfLsdbTable OBJECT-TYPE
SYNTAX SEQUENCE OF OspfLsdbEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"The OSPF Process's Links State Database."
REFERENCE
"OSPF Version 2, Section 12 Link State Advertisements"
::= { ospf 4 }
ospfLsdbEntry OBJECT-TYPE
SYNTAX OspfLsdbEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"A single Link State Advertisement."
INDEX { ospfLsdbAreaId, ospfLsdbType,
ospfLsdbLSID, ospfLsdbRouterId }
::= { ospfLsdbTable 1 }
OspfLsdbEntry ::=
SEQUENCE {
ospfLsdbAreaId
AreaID,
ospfLsdbType
INTEGER,
ospfLsdbLSID
IpAddress,
ospfLsdbRouterId
RouterID,
ospfLsdbSequence
INTEGER,
ospfLsdbAge
INTEGER,
ospfLsdbChecksum
INTEGER,
ospfLsdbAdvertisement
OCTET STRING
}
ospfLsdbAreaId OBJECT-TYPE
SYNTAX AreaID
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The 32 bit identifier of the Area from which the LSA
was received."
REFERENCE
"OSPF Version 2, Appendix C.2 Area parameters"
::= { ospfLsdbEntry 1 }
ospfLsdbType OBJECT-TYPE
SYNTAX INTEGER {
routerLink (1),
networkLink (2),
summaryLink (3),
asSummaryLink (4),
asExternalLink (5)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The type of the link state advertisement. Each link
state type has a separate advertisement format."
REFERENCE
"OSPF Version 2, Appendix A.4.1 The Link State
Advertisement header"
::= { ospfLsdbEntry 2 }
ospfLsdbLSID OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The Link State ID is an LS Type Specific field
containing either a Router ID or an IP Address; it
identifies the piece of the routing domain that is
being described by the advertisement."
REFERENCE
"OSPF Version 2, Section 12.1.4 Link State ID"
::= { ospfLsdbEntry 3 }
ospfLsdbRouterId OBJECT-TYPE
SYNTAX RouterID
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The 32 bit number that uniquely identifies the
originating router in the Autonomous System."
REFERENCE
"OSPF Version 2, Appendix C.1 Global parameters"
::= { ospfLsdbEntry 4 }
-- Note that the OSPF Sequence Number is a 32 bit signed
-- integer. It starts with the value '80000001'h,
-- or -'7FFFFFFF'h, and increments until '7FFFFFFF'h
-- Thus, a typical sequence number will be very negative.
ospfLsdbSequence OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The sequence number field is a signed 32-bit integer.
It is used to detect old and duplicate link state
advertisements. The space of sequence numbers is
linearly ordered. The larger the sequence number the
more recent the advertisement."
REFERENCE
"OSPF Version 2, Section 12.1.6 LS sequence number"
::= { ospfLsdbEntry 5 }
ospfLsdbAge OBJECT-TYPE
SYNTAX INTEGER -- Should be 0..MaxAge
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This field is the age of the link state advertisement
in seconds."
REFERENCE
"OSPF Version 2, Section 12.1.1 LS age"
::= { ospfLsdbEntry 6 }
ospfLsdbChecksum OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"This field is the checksum of the complete contents of
the advertisement, excepting the age field. The age
field is excepted so that an advertisement's age can be
incremented without updating the checksum. The
checksum used is the same that is used for ISO
connectionless datagrams; it is commonly referred to as
the Fletcher checksum."
REFERENCE
"OSPF Version 2, Section 12.1.7 LS checksum"
::= { ospfLsdbEntry 7 }
ospfLsdbAdvertisement OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The entire Link State Advertisement, including its
header."
REFERENCE
"OSPF Version 2, Section 12 Link State Advertisements"
::= { ospfLsdbEntry 8 }
-- Address Range Table
-- The Address Range Table acts as an adjunct to the Area
-- Table; It describes those Address Range Summaries that
-- are configured to be propagated from an Area to reduce
-- the amount of information about it which is known beyond
-- its borders.
ospfAreaRangeTable OBJECT-TYPE
SYNTAX SEQUENCE OF OspfAreaRangeEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"A range if IP addresses specified by an IP address/IP
network mask pair. For example, class B address range
of X.X.X.X with a network mask of 255.255.0.0 includes
all IP addresses from X.X.0.0 to X.X.255.255"
REFERENCE
"OSPF Version 2, Appendix C.2 Area parameters"
::= { ospf 5 }
ospfAreaRangeEntry OBJECT-TYPE
SYNTAX OspfAreaRangeEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"A range if IP addresses specified by an IP address/IP
network mask pair. For example, class B address range
of X.X.X.X with a network mask of 255.255.0.0 includes
all IP addresses from X.X.0.0 to X.X.255.255"
REFERENCE
"OSPF Version 2, Appendix C.2 Area parameters"
INDEX { ospfAreaRangeAreaID, ospfAreaRangeNet }
::= { ospfAreaRangeTable 1 }
OspfAreaRangeEntry ::=
SEQUENCE {
ospfAreaRangeAreaID
AreaID,
ospfAreaRangeNet
IpAddress,
ospfAreaRangeMask
IpAddress,
ospfAreaRangeStatus
Validation
}
ospfAreaRangeAreaID OBJECT-TYPE
SYNTAX AreaID
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The Area the Address Range is to be found within."
REFERENCE
"OSPF Version 2, Appendix C.2 Area parameters"
::= { ospfAreaRangeEntry 1 }
ospfAreaRangeNet OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The IP Address of the Net or Subnet indicated by the
range."
REFERENCE
"OSPF Version 2, Appendix C.2 Area parameters"
::= { ospfAreaRangeEntry 2 }
ospfAreaRangeMask OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The Subnet Mask that pertains to the Net or Subnet."
REFERENCE
"OSPF Version 2, Appendix C.2 Area parameters"
::= { ospfAreaRangeEntry 3 }
ospfAreaRangeStatus OBJECT-TYPE
SYNTAX Validation
ACCESS read-write
STATUS mandatory
DESCRIPTION
"This variable displays the validity or invalidity of
the entry. Setting it to 'invalid' has the effect of
rendering it inoperative. The internal effect (row
removal) is implementation dependent."
DEFVAL { valid }
::= { ospfAreaRangeEntry 4 }
-- OSPF Host Table
-- The Host/Metric Table indicates what hosts are directly
-- attached to the Router, and what metrics and types of
-- service should be advertised for them.
ospfHostTable OBJECT-TYPE
SYNTAX SEQUENCE OF OspfHostEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"The list of Hosts, and their metrics, that the router
will advertise as host routes."
REFERENCE
"OSPF Version 2, Appendix C.6 Host route parameters"
::= { ospf 6 }
ospfHostEntry OBJECT-TYPE
SYNTAX OspfHostEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"A metric to be advertised, for a given type of service,
when a given host is reachable."
INDEX { ospfHostIpAddress, ospfHostTOS }
::= { ospfHostTable 1 }
OspfHostEntry ::=
SEQUENCE {
ospfHostIpAddress
IpAddress,
ospfHostTOS
TOSType,
ospfHostMetric
Metric,
ospfHostStatus
Validation
}
ospfHostIpAddress OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The IP Address of the Host."
REFERENCE
"OSPF Version 2, Appendix C.6 Host route parameters"
::= { ospfHostEntry 1 }
ospfHostTOS OBJECT-TYPE
SYNTAX TOSType
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The Type of Service of the route being configured."
REFERENCE
"OSPF Version 2, Appendix C.6 Host route parameters"
::= { ospfHostEntry 2 }
ospfHostMetric OBJECT-TYPE
SYNTAX Metric
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The Metric to be advertised."
REFERENCE
"OSPF Version 2, Appendix C.6 Host route parameters"
::= { ospfHostEntry 3 }
ospfHostStatus OBJECT-TYPE
SYNTAX Validation
ACCESS read-write
STATUS mandatory
DESCRIPTION
"This variable displays the validity or invalidity of
the entry. Setting it to 'invalid' has the effect of
rendering it inoperative. The internal effect (row
removal) is implementation dependent."
DEFVAL { valid }
::= { ospfHostEntry 4 }
-- OSPF Interface Table
-- The OSPF Interface Table augments the ifTable with OSPF
-- specific information.
ospfIfTable OBJECT-TYPE
SYNTAX SEQUENCE OF OspfIfEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"The OSPF Interface Table describes the interfaces from
the viewpoint of OSPF."
REFERENCE
"OSPF Version 2, Appendix C.3 Router interface
parameters"
::= { ospf 7 }
ospfIfEntry OBJECT-TYPE
SYNTAX OspfIfEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"The OSPF Interface Entry describes one interface from
the viewpoint of OSPF."
INDEX { ospfIfIpAddress, ospfAddressLessIf }
::= { ospfIfTable 1 }
OspfIfEntry ::=
SEQUENCE {
ospfIfIpAddress
IpAddress,
ospfAddressLessIf
INTEGER,
ospfIfAreaId
AreaID,
ospfIfType
INTEGER,
ospfIfAdminStat
Status,
ospfIfRtrPriority
DesignatedRouterPriority,
ospfIfTransitDelay
UpToMaxAge,
ospfIfRetransInterval
UpToMaxAge,
ospfIfHelloInterval
HelloRange,
ospfIfRtrDeadInterval
PositiveInteger,
ospfIfPollInterval
PositiveInteger,
ospfIfState
INTEGER,
ospfIfDesignatedRouter
IpAddress,
ospfIfBackupDesignatedRouter
IpAddress,
ospfIfEvents
Counter,
ospfIfAuthKey
OCTET STRING
}
ospfIfIpAddress OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The IP address of this OSPF interface."
::= { ospfIfEntry 1 }
ospfAddressLessIf OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-write
STATUS mandatory
DESCRIPTION
"For the purpose of easing the instancing of addressed
and addressless interfaces; This variable takes the
value 0 on interfaces with IP Addresses, and the
corresponding value of ifIndex for interfaces having no
IP Address."
::= { ospfIfEntry 2 }
ospfIfAreaId OBJECT-TYPE
SYNTAX AreaID
ACCESS read-write
STATUS mandatory
DESCRIPTION
"A 32-bit integer uniquely identifying the area to
which the interface connects. Area ID 0.0.0.0 is used
for the OSPF backbone."
DEFVAL { '00000000'H } -- 0.0.0.0
::= { ospfIfEntry 3 }
ospfIfType OBJECT-TYPE
SYNTAX INTEGER {
broadcast (1),
nbma (2),
pointToPoint (3)
}
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The OSPF interface type.
By way of a default, this field may be intuited from
the corresponding value of ifType. Broadcast LANs,
such as Ethernet and IEEE 802.5, take the value
'broadcast', X.25, Frame Relay, and similar
technologies take the value 'nbma', and links that are
definitively point to point take the value
'pointToPoint'."
::= { ospfIfEntry 4 }
ospfIfAdminStat OBJECT-TYPE
SYNTAX Status
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The OSPF interface's administrative status. The value
'enabled' denotes that neighbor relationships may be
formed on the interface, and the interface will be
advertised as an internal route to some area. The
value 'disabled' denotes that the interface is external
to OSPF."
DEFVAL { enabled }
::= { ospfIfEntry 5 }
ospfIfRtrPriority OBJECT-TYPE
SYNTAX DesignatedRouterPriority
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The priority of this interface. Used in multi-access
networks, this field is used in the designated router
election algorithm. The value 0 signifies that the
router is not eligible to become the designated router
on this particular network. In the event of a tie in
this value, routers will use their router id as a tie
breaker."
DEFVAL { 1 }
::= { ospfIfEntry 6 }
ospfIfTransitDelay OBJECT-TYPE
SYNTAX UpToMaxAge
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The estimated number of seconds it takes to transmit a
link- state update packet over this interface."
DEFVAL { 1 }
::= { ospfIfEntry 7 }
ospfIfRetransInterval OBJECT-TYPE
SYNTAX UpToMaxAge
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The number of seconds between link-state advertisement
retransmissions, for adjacencies belonging to this
interface. This value is also used when retransmitting
database description and link-state request packets."
DEFVAL { 5 }
::= { ospfIfEntry 8 }
ospfIfHelloInterval OBJECT-TYPE
SYNTAX HelloRange
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The length of time, in seconds, between the Hello
packets that the router sends on the interface. This
value must be the same for all routers attached to a
common network."
DEFVAL { 10 }
::= { ospfIfEntry 9 }
ospfIfRtrDeadInterval OBJECT-TYPE
SYNTAX PositiveInteger
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The number of seconds that a router's Hello packets
have not been seen before it's neighbors declare the
router down. This should be some multiple of the Hello
interval. This value must be the same for all routers
attached to a common network."
DEFVAL { 40 }
::= { ospfIfEntry 10 }
ospfIfPollInterval OBJECT-TYPE
SYNTAX PositiveInteger
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The larger time interval, in seconds, between the
Hello packets sent to an inactive non-broadcast multi-
access neighbor."
DEFVAL { 120 }
::= { ospfIfEntry 11 }
ospfIfState OBJECT-TYPE
SYNTAX INTEGER {
down (1),
loopback (2),
waiting (3),
pointToPoint (4),
designatedRouter (5),
backupDesignatedRouter (6),
otherDesignatedRouter (7)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The OSPF Interface State."
DEFVAL { down }
::= { ospfIfEntry 12 }
ospfIfDesignatedRouter OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The IP Address of the Designated Router."
DEFVAL { '00000000'H } -- 0.0.0.0
::= { ospfIfEntry 13 }
ospfIfBackupDesignatedRouter OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The IP Address of the Backup Designated Router."
DEFVAL { '00000000'H } -- 0.0.0.0
::= { ospfIfEntry 14 }
ospfIfEvents OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of times this OSPF interface has changed
its state, or an error has occurred."
DEFVAL { 0 }
::= { ospfIfEntry 15 }
ospfIfAuthKey OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The Authentication Key. If the Area's Authorization
Type is simplePassword, and the key length is shorter
than 8 octets, the agent will left adjust and zero fill
to 8 octets.
When read, ospfIfAuthKey always returns an Octet String
of length zero."
REFERENCE
"OSPF Version 2, Section 9 The Interface Data
Structure"
DEFVAL { '0000000000000000'H } -- 0.0.0.0.0.0.0.0
::= { ospfIfEntry 16 }
-- OSPF Interface Metric Table
-- The Metric Table describes the metrics to be advertised
-- for a specified interface at the various types of service.
-- As such, this table is an adjunct of the OSPF Interface
-- Table.
-- Types of service, as defined by RFC 791, have the ability
-- to request low delay, high bandwidth, or reliable linkage.
-- For the purposes of this specification, the measure of
-- bandwidth
-- Metric = 10^8 / ifSpeed
-- is the default value. For multiple link interfaces, note
-- that ifSpeed is the sum of the individual link speeds.
-- This yields a number having the following typical values:
-- Network Type/bit rate Metric
-- >= 100 MBPS 1
-- Ethernet/802.3 10
-- E1 48
-- T1 (ESF) 65
-- 64 KBPS 1562
-- 56 KBPS 1785
-- 19.2 KBPS 5208
-- 9.6 KBPS 10416
-- Routes that are not specified use the default (TOS 0) metric
ospfIfMetricTable OBJECT-TYPE
SYNTAX SEQUENCE OF OspfIfMetricEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"The TOS metrics for a non-virtual interface identified
by the interface index."
REFERENCE
"OSPF Version 2, Appendix C.3 Router interface
parameters"
::= { ospf 8 }
ospfIfMetricEntry OBJECT-TYPE
SYNTAX OspfIfMetricEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"A particular TOS metric for a non-virtual interface
identified by the interface index."
REFERENCE
"OSPF Version 2, Appendix C.3 Router interface
parameters"
INDEX { ospfIfMetricIpAddress,
ospfIfMetricAddressLessIf,
ospfIfMetricTOS }
::= { ospfIfMetricTable 1 }
OspfIfMetricEntry ::=
SEQUENCE {
ospfIfMetricIpAddress
IpAddress,
ospfIfMetricAddressLessIf
INTEGER,
ospfIfMetricTOS
TOSType,
ospfIfMetricMetric
Metric,
ospfIfMetricStatus
Validation
}
ospfIfMetricIpAddress OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The IP address of this OSPF interface. On row
creation, this can be derived from the instance."
::= { ospfIfMetricEntry 1 }
ospfIfMetricAddressLessIf OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-write
STATUS mandatory
DESCRIPTION
"For the purpose of easing the instancing of addressed
and addressless interfaces; This variable takes the
value 0 on interfaces with IP Addresses, and the value
of ifIndex for interfaces having no IP Address. On row
creation, this can be derived from the instance."
::= { ospfIfMetricEntry 2 }
ospfIfMetricTOS OBJECT-TYPE
SYNTAX TOSType
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The type of service metric being referenced. On row
creation, this can be derived from the instance."
::= { ospfIfMetricEntry 3 }
ospfIfMetricMetric OBJECT-TYPE
SYNTAX Metric
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The metric of using this type of service on this
interface. The default value of the TOS 0 Metric is
10^8 / ifSpeed.
The value FFFF is distinguished to mean 'no route via
this TOS'."
::= { ospfIfMetricEntry 4 }
ospfIfMetricStatus OBJECT-TYPE
SYNTAX Validation
ACCESS read-write
STATUS mandatory
DESCRIPTION
"This variable displays the validity or invalidity of
the entry. Setting it to 'invalid' has the effect of
rendering it inoperative. The internal effect (row
removal) is implementation dependent."
DEFVAL { valid }
::= { ospfIfMetricEntry 5 }
-- OSPF Virtual Interface Table
-- The Virtual Interface Table describes the virtual
-- links that the OSPF Process is configured to
-- carry on.
ospfVirtIfTable OBJECT-TYPE
SYNTAX SEQUENCE OF OspfVirtIfEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Information about this router's virtual interfaces."
REFERENCE
"OSPF Version 2, Appendix C.4 Virtual link parameters"
::= { ospf 9 }
ospfVirtIfEntry OBJECT-TYPE
SYNTAX OspfVirtIfEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Information about a single Virtual Interface."
INDEX { ospfVirtIfAreaID, ospfVirtIfNeighbor }
::= { ospfVirtIfTable 1 }
OspfVirtIfEntry ::=
SEQUENCE {
ospfVirtIfAreaID
AreaID,
ospfVirtIfNeighbor
RouterID,
ospfVirtIfTransitDelay
UpToMaxAge,
ospfVirtIfRetransInterval
UpToMaxAge,
ospfVirtIfHelloInterval
HelloRange,
ospfVirtIfRtrDeadInterval
PositiveInteger,
ospfVirtIfState
INTEGER,
ospfVirtIfEvents
Counter,
ospfVirtIfAuthKey
OCTET STRING,
ospfVirtIfStatus
Validation
}
ospfVirtIfAreaID OBJECT-TYPE
SYNTAX AreaID
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The Transit Area that the Virtual Link traverses. By
definition, this is not 0.0.0.0"
::= { ospfVirtIfEntry 1 }
ospfVirtIfNeighbor OBJECT-TYPE
SYNTAX RouterID
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The Router ID of the Virtual Neighbor."
::= { ospfVirtIfEntry 2 }
ospfVirtIfTransitDelay OBJECT-TYPE
SYNTAX UpToMaxAge
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The estimated number of seconds it takes to transmit a
link- state update packet over this interface."
DEFVAL { 1 }
::= { ospfVirtIfEntry 3 }
ospfVirtIfRetransInterval OBJECT-TYPE
SYNTAX UpToMaxAge
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The number of seconds between link-state advertisement
retransmissions, for adjacencies belonging to this
interface. This value is also used when retransmitting
database description and link-state request packets.
This value should be well over the expected round-trip
time."
DEFVAL { 5 }
::= { ospfVirtIfEntry 4 }
ospfVirtIfHelloInterval OBJECT-TYPE
SYNTAX HelloRange
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The length of time, in seconds, between the Hello
packets that the router sends on the interface. This
value must be the same for the virtual neighbor."
DEFVAL { 10 }
::= { ospfVirtIfEntry 5 }
ospfVirtIfRtrDeadInterval OBJECT-TYPE
SYNTAX PositiveInteger
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The number of seconds that a router's Hello packets
have not been seen before it's neighbors declare the
router down. This should be some multiple of the Hello
interval. This value must be the same for the virtual
neighbor."
DEFVAL { 60 }
::= { ospfVirtIfEntry 6 }
ospfVirtIfState OBJECT-TYPE
SYNTAX INTEGER {
down (1), -- these use the same encoding
pointToPoint (4) -- as the ospfIfTable
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"OSPF virtual interface states."
DEFVAL { down }
::= { ospfVirtIfEntry 7 }
ospfVirtIfEvents OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of state changes or error events on this
Virtual Link"
DEFVAL { 0 }
::= { ospfVirtIfEntry 8 }
ospfVirtIfAuthKey OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-write
STATUS mandatory
DESCRIPTION
"If Authentication Type is simplePassword, the device
will left adjust and zero fill to 8 octets.
When read, ospfVifAuthKey always returns a string of
length zero."
REFERENCE
"OSPF Version 2, Section 9 The Interface Data
Structure"
DEFVAL { '0000000000000000'H } -- 0.0.0.0.0.0.0.0
::= { ospfVirtIfEntry 9 }
ospfVirtIfStatus OBJECT-TYPE
SYNTAX Validation
ACCESS read-write
STATUS mandatory
DESCRIPTION
"This variable displays the validity or invalidity of
the entry. Setting it to 'invalid' has the effect of
rendering it inoperative. The internal effect (row
removal) is implementation dependent."
DEFVAL { valid }
::= { ospfVirtIfEntry 10 }
-- OSPF Neighbor Table
-- The OSPF Neighbor Table describes all neighbors in
-- the locality of the subject router.
ospfNbrTable OBJECT-TYPE
SYNTAX SEQUENCE OF OspfNbrEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"A table of non-virtual neighbor information."
REFERENCE
"OSPF Version 2, Section 10 The Neighbor Data
Structure"
::= { ospf 10 }
ospfNbrEntry OBJECT-TYPE
SYNTAX OspfNbrEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"The information regarding a single neighbor."
REFERENCE
"OSPF Version 2, Section 10 The Neighbor Data
Structure"
INDEX { ospfNbrIpAddr, ospfNbrAddressLessIndex }
::= { ospfNbrTable 1 }
OspfNbrEntry ::=
SEQUENCE {
ospfNbrIpAddr
IpAddress,
ospfNbrAddressLessIndex
InterfaceIndex,
ospfNbrRtrId
RouterID,
ospfNbrOptions
INTEGER,
ospfNbrPriority
DesignatedRouterPriority,
ospfNbrState
INTEGER,
ospfNbrEvents
Counter,
ospfNbrLSRetransQLen
Gauge,
ospfNBMANbrStatus
Validation
}
ospfNbrIpAddr OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The IP address of this neighbor."
::= { ospfNbrEntry 1 }
ospfNbrAddressLessIndex OBJECT-TYPE
SYNTAX InterfaceIndex
ACCESS read-write
STATUS mandatory
DESCRIPTION
" On an interface having an IP Address, zero. On
addressless interfaces, the corresponding value of
ifIndex in the Internet Standard MIB. On row creation,
this can be derived from the instance."
::= { ospfNbrEntry 2 }
ospfNbrRtrId OBJECT-TYPE
SYNTAX RouterID
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A 32-bit integer (represented as a type IpAddress)
uniquely identifying the neighboring router in the
Autonomous System."
DEFVAL { '00000000'H } -- 0.0.0.0
::= { ospfNbrEntry 3 }
ospfNbrOptions OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A Bit Mask corresponding to the neighbor's options
field.
Bit 0, if set, indicates that the area accepts and
operates on external information; if zero, it is a stub
area.
Bit 1, if set, indicates that the system will operate
on Type of Service metrics other than TOS 0. If zero,
the neighbor will ignore all metrics except the TOS 0
metric."
REFERENCE
"OSPF Version 2, Section 12.1.2 Options"
DEFVAL { 0 }
::= { ospfNbrEntry 4 }
ospfNbrPriority OBJECT-TYPE
SYNTAX DesignatedRouterPriority
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The priority of this neighbor in the designated router
election algorithm. The value 0 signifies that the
neighbor is not eligible to become the designated
router on this particular network."
DEFVAL { 1 }
::= { ospfNbrEntry 5 }
ospfNbrState OBJECT-TYPE
SYNTAX INTEGER {
down (1),
attempt (2),
init (3),
twoWay (4),
exchangeStart (5),
exchange (6),
loading (7),
full (8)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The State of the relationship with this Neighbor."
REFERENCE
"OSPF Version 2, Section 10.1 Neighbor States"
DEFVAL { down }
::= { ospfNbrEntry 6 }
ospfNbrEvents OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of times this neighbor relationship has
changed state, or an error has occurred."
DEFVAL { 0 }
::= { ospfNbrEntry 7 }
ospfNbrLSRetransQLen OBJECT-TYPE
SYNTAX Gauge
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The current length of the retransmission queue."
DEFVAL { 0 }
::= { ospfNbrEntry 8 }
ospfNBMANbrStatus OBJECT-TYPE
SYNTAX Validation
ACCESS read-write
STATUS mandatory
DESCRIPTION
"This variable displays the validity or invalidity of
the entry. Setting it to 'invalid' has the effect of
rendering it inoperative. The internal effect (row
removal) is implementation dependent."
DEFVAL { valid }
::= { ospfNbrEntry 9 }
-- OSPF Virtual Neighbor Table
-- This table describes all virtual neighbors.
-- Since Virtual Links are configured in the
-- virtual interface table, this table is read-only.
ospfVirtNbrTable OBJECT-TYPE
SYNTAX SEQUENCE OF OspfVirtNbrEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"A table of virtual neighbor information."
REFERENCE
"OSPF Version 2, Section 15 Virtual Links"
::= { ospf 11 }
ospfVirtNbrEntry OBJECT-TYPE
SYNTAX OspfVirtNbrEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Virtual neighbor information."
INDEX { ospfVirtNbrArea, ospfVirtNbrRtrId }
::= { ospfVirtNbrTable 1 }
OspfVirtNbrEntry ::=
SEQUENCE {
ospfVirtNbrArea
AreaID,
ospfVirtNbrRtrId
RouterID,
ospfVirtNbrIpAddr
IpAddress,
ospfVirtNbrOptions
INTEGER,
ospfVirtNbrState
INTEGER,
ospfVirtNbrEvents
Counter,
ospfVirtNbrLSRetransQLen
Gauge
}
ospfVirtNbrArea OBJECT-TYPE
SYNTAX AreaID
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The Transit Area Identifier."
::= { ospfVirtNbrEntry 1 }
ospfVirtNbrRtrId OBJECT-TYPE
SYNTAX RouterID
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A 32-bit integer uniquely identifying the neighboring
router in the Autonomous System."
::= { ospfVirtNbrEntry 2 }
ospfVirtNbrIpAddr OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The IP address this Virtual Neighbor is using."
::= { ospfVirtNbrEntry 3 }
ospfVirtNbrOptions OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A bit map corresponding to the neighbor's options
field. Thus, Bit 1, if set, indicates that the
neighbor supports Type of Service Routing; if zero, no
metrics other than TOS 0 are in use by the neighbor."
::= { ospfVirtNbrEntry 4 }
ospfVirtNbrState OBJECT-TYPE
SYNTAX INTEGER {
down (1),
attempt (2),
init (3),
twoWay (4),
exchangeStart (5),
exchange (6),
loading (7),
full (8)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The state of the Virtual Neighbor Relationship."
::= { ospfVirtNbrEntry 5 }
ospfVirtNbrEvents OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of times this virtual link has changed its
state, or an error has occurred."
::= { ospfVirtNbrEntry 6 }
ospfVirtNbrLSRetransQLen OBJECT-TYPE
SYNTAX Gauge
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The current length of the retransmission queue."
::= { ospfVirtNbrEntry 7 }
END
6. Acknowledgements
This document was produced by the OSPF Working Group, of which the
Chairman is John Moy of Proteon.
In addition, the comments of the following individuals are also
acknowledged:
John Moy Proteon, Inc
Dino Farinacci 3COM
Stan Froyd Advanced Computer Communications
Steve Willis Wellfleet
John Burress Wellfleet
Keith McCloghrie Hughes LAN Systems
7. References
[1] Cerf, V., "IAB Recommendations for the Development of Internet
Network Management Standards", RFC 1052, NRI, April 1988.
[2] Cerf, V., "Report of the Second Ad Hoc Network Management Review
Group", RFC 1109, NRI, August 1989.
[3] Rose M., and K. McCloghrie, "Structure and Identification of Management Information for TCP/IP-based internets", RFC 1155, Performance Systems International, Hughes LAN Systems, May 1990. [4] McCloghrie K., and M. Rose, "Management Information Base for Network Management of TCP/IP-based internets", RFC 1156, Hughes LAN Systems, Performance Systems International, May 1990. [5] Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple Network Management Protocol", RFC 1157, SNMP Research, Performance Systems International, Performance Systems International, MIT Laboratory for Computer Science, May 1990. [6] Rose M., Editor, "Management Information Base for Network Management of TCP/IP-based internets: MIB-II", RFC 1213, Performance Systems International, March 1991. [7] Information processing systems - Open Systems Interconnection - Specification of Abstract Syntax Notation One (ASN.1), International Organization for Standardization, International Standard 8824, December 1987. [8] 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. [9] Rose, M., and K. McCloghrie, Editors, "Concise MIB Definitions", RFC 1212, Performance Systems International, Hughes LAN Systems, March 1991. [10] Moy, J., Editor, "The OSPF Specification, Version 2", RFC 1247, Proteon, Inc., July 1991. 8. Security Considerations Security issues are not discussed in this memo.
9. Authors' Addresses Fred Baker Advanced Computer Communications 720 Santa Barbara Street Santa Barbara, California 93101 Phone: (805) 963-9431 EMail: fbaker@acc.com Rob Coltun Computer Science Center Computer and Space Sciences Building College Park, Maryland 20742 Phone: (301) 921-8600 EMail: rcoltun@ni.umd.edu Or send comments to ospf@trantor.umd.edu.