All MIBs › RFC1248-MIB
Category: IETF Standards
Description: Defines OSPF version 1 routing protocol management objects for area and neighbor monitoring per RFC 1248.
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What Is RFC1248-MIB?
RFC1248-MIB is a vendor-neutral, standards-based IETF MIB defining management objects for OSPF version 1, the link-state interior gateway routing protocol, as specified in RFC 1248. It exposes routing-protocol configuration and operational data such as OSPF area definitions, neighbor adjacency state, and interface-level OSPF parameters. Its monitoring value is centered on software/protocol status rather than physical hardware: tracking neighbor state transitions and area status reveals routing instability, adjacency flaps, or misconfiguration that can cause routing loops or blackholes. It is an early, largely superseded precursor depending on the same OSPF concepts later refined in OSPF-MIB (RFC 1253 and successors), and is commonly seen only on legacy routing platforms. It would be deployed on older router software stacks running OSPFv1-era implementations where routing protocol health needs to be tracked via SNMP. Engineers can download the RFC1248-MIB file directly to load it into their MIB browser.
IPNetwork Monitor allows you to monitor SNMP objects defined in RFC1248-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.
Supported Devices
- vendor-neutral, standards-based MIB, not tied to a specific manufacturer
- IP routers running OSPF version 1
Monitoring Examples
An operator would monitor the OSPF neighbor table to check neighbor state (e.g., full, init, down) per interface, and the area table to confirm area IDs and stub/backbone configuration match design intent. A neighbor stuck in a non-full state, or repeated state transitions, would indicate an adjacency problem such as mismatched hello/dead timers or a flapping link.
What Can Be Monitored
- OSPF area configuration
- OSPF neighbor adjacency state
- OSPF interface parameters
- routing protocol stability
This MIB depends on
Related MIBs
Imported Objects
OIDs
| OID symbolic | OID numeric | Type | Access | Description |
|---|---|---|---|---|
| ospf | 1.3.6.1.2.1.13 | |||
| INT ospfAddressLessIf | 1.3.6.1.2.1.13.7.1.2 | INTEGER | read-write | 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. |
| STA ospfAdminStat | 1.3.6.1.2.1.13.1.2 | Status | read-write | 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. |
| GAU ospfAreaBdrRtrCount | 1.3.6.1.2.1.13.2.1.5 | Gauge | read-only | The total number of area border routers reachable within this area. This is initially zero, and is calculated in each SPF Pass. |
| T/F ospfAreaBdrRtrStatus | 1.3.6.1.2.1.13.1.4 | TruthValue | read-only | A flag to note whether this router is an area border router. |
| ospfAreaEntry | 1.3.6.1.2.1.13.2.1 | not-accessible | Information describing the configured parameters and cumulative statistics of one of the router's attached areas. | |
| ARE ospfAreaId | 1.3.6.1.2.1.13.2.1.1 | AreaID | read-write | A 32-bit integer uniquely identifying an area. Area ID 0.0.0.0 is used for the OSPF backbone. |
| INT ospfAreaLSACksumSum | 1.3.6.1.2.1.13.2.1.8 | INTEGER | read-only | 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. |
| GAU ospfAreaLSACount | 1.3.6.1.2.1.13.2.1.7 | Gauge | read-only | The total number of link-state advertisements in this area's link-state database, excluding AS External LSA's. |
| ARE ospfAreaRangeAreaID | 1.3.6.1.2.1.13.5.1.1 | AreaID | read-write | The Area the Address Range is to be found within. |
| ospfAreaRangeEntry | 1.3.6.1.2.1.13.5.1 | not-accessible | 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 | |
| IP ospfAreaRangeMask | 1.3.6.1.2.1.13.5.1.3 | IpAddress | read-write | The Subnet Mask that pertains to the Net or Subnet. |
| IP ospfAreaRangeNet | 1.3.6.1.2.1.13.5.1.2 | IpAddress | read-write | The IP Address of the Net or Subnet indicated by the range. |
| VAL ospfAreaRangeStatus | 1.3.6.1.2.1.13.5.1.4 | Validation | read-write | 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. |
| ospfAreaRangeTable | 1.3.6.1.2.1.13.5 | not-accessible | 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 | |
| ospfAreaTable | 1.3.6.1.2.1.13.2 | not-accessible | Information describing the configured parameters and cumulative statistics of the router's attached areas. | |
| GAU ospfASBdrRtrCount | 1.3.6.1.2.1.13.2.1.6 | Gauge | read-only | The total number of Autonomous System border routers reachable within this area. This is initially zero, and is calculated in each SPF Pass. |
| T/F ospfASBdrRtrStatus | 1.3.6.1.2.1.13.1.5 | TruthValue | read-write | A flag to note whether this router is an Autonomous System border router. |
| INT ospfAuthType | 1.3.6.1.2.1.13.2.1.2 | INTEGER | read-write | The authentication type specified for an area. Additional authentication types may be assigned locally on a per Area basis. |
| INT ospfExternLSACksumSum | 1.3.6.1.2.1.13.1.7 | INTEGER | read-only | 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. |
| GAU ospfExternLSACount | 1.3.6.1.2.1.13.1.6 | Gauge | read-only | The number of external (LS type 5) link-state advertisements in the link-state database. |
| ospfGeneralGroup | 1.3.6.1.2.1.13.1 | |||
| ospfHostEntry | 1.3.6.1.2.1.13.6.1 | not-accessible | A metric to be advertised, for a given type of service, when a given host is reachable. | |
| IP ospfHostIpAddress | 1.3.6.1.2.1.13.6.1.1 | IpAddress | read-write | The IP Address of the Host. |
| MET ospfHostMetric | 1.3.6.1.2.1.13.6.1.3 | Metric | read-write | The Metric to be advertised. |
| VAL ospfHostStatus | 1.3.6.1.2.1.13.6.1.4 | Validation | read-write | 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. |
| ospfHostTable | 1.3.6.1.2.1.13.6 | not-accessible | The list of Hosts, and their metrics, that the router will advertise as host routes. | |
| TOS ospfHostTOS | 1.3.6.1.2.1.13.6.1.2 | TOSType | read-write | The Type of Service of the route being configured. |
| STA ospfIfAdminStat | 1.3.6.1.2.1.13.7.1.5 | Status | read-write | 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. |
| ARE ospfIfAreaId | 1.3.6.1.2.1.13.7.1.3 | AreaID | read-write | 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. |
| OCT ospfIfAuthKey | 1.3.6.1.2.1.13.7.1.16 | OCTET STRING | read-write | 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. |
| IP ospfIfBackupDesignatedRouter | 1.3.6.1.2.1.13.7.1.14 | IpAddress | read-only | The IP Address of the Backup Designated Router. |
| IP ospfIfDesignatedRouter | 1.3.6.1.2.1.13.7.1.13 | IpAddress | read-only | The IP Address of the Designated Router. |
| ospfIfEntry | 1.3.6.1.2.1.13.7.1 | not-accessible | The OSPF Interface Entry describes one interface from the viewpoint of OSPF. | |
| CTR ospfIfEvents | 1.3.6.1.2.1.13.7.1.15 | Counter | read-only | The number of times this OSPF interface has changed its state, or an error has occurred. |
| HEL ospfIfHelloInterval | 1.3.6.1.2.1.13.7.1.9 | HelloRange | read-write | 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. |
| IP ospfIfIpAddress | 1.3.6.1.2.1.13.7.1.1 | IpAddress | read-write | The IP address of this OSPF interface. |
| INT ospfIfMetricAddressLessIf | 1.3.6.1.2.1.13.8.1.2 | INTEGER | read-write | 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 | 1.3.6.1.2.1.13.8.1 | not-accessible | A particular TOS metric for a non-virtual interface identified by the interface index. | |
| IP ospfIfMetricIpAddress | 1.3.6.1.2.1.13.8.1.1 | IpAddress | read-write | The IP address of this OSPF interface. On row creation, this can be derived from the instance. |
| MET ospfIfMetricMetric | 1.3.6.1.2.1.13.8.1.4 | Metric | read-write | 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'. |
| VAL ospfIfMetricStatus | 1.3.6.1.2.1.13.8.1.5 | Validation | read-write | 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. |
| ospfIfMetricTable | 1.3.6.1.2.1.13.8 | not-accessible | The TOS metrics for a non-virtual interface identified by the interface index. | |
| TOS ospfIfMetricTOS | 1.3.6.1.2.1.13.8.1.3 | TOSType | read-write | The type of service metric being referenced. On row creation, this can be derived from the instance. |
| NUM ospfIfPollInterval | 1.3.6.1.2.1.13.7.1.11 | PositiveInteger | read-write | The larger time interval, in seconds, between the Hello packets sent to an inactive non-broadcast multi- access neighbor. |
| UPT ospfIfRetransInterval | 1.3.6.1.2.1.13.7.1.8 | UpToMaxAge | read-write | 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. |
| NUM ospfIfRtrDeadInterval | 1.3.6.1.2.1.13.7.1.10 | PositiveInteger | read-write | 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. |
| DES ospfIfRtrPriority | 1.3.6.1.2.1.13.7.1.6 | DesignatedRouterPriority | read-write | 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. |
| INT ospfIfState | 1.3.6.1.2.1.13.7.1.12 | INTEGER | read-only | The OSPF Interface State. |
| ospfIfTable | 1.3.6.1.2.1.13.7 | not-accessible | The OSPF Interface Table describes the interfaces from the viewpoint of OSPF. | |
| UPT ospfIfTransitDelay | 1.3.6.1.2.1.13.7.1.7 | UpToMaxAge | read-write | The estimated number of seconds it takes to transmit a link- state update packet over this interface. |
| INT ospfIfType | 1.3.6.1.2.1.13.7.1.4 | INTEGER | read-write | 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'. |
| T/F ospfImportASExtern | 1.3.6.1.2.1.13.2.1.3 | TruthValue | read-write | The area's support for importing AS external link- state advertisements. |
| OCT ospfLsdbAdvertisement | 1.3.6.1.2.1.13.4.1.8 | OCTET STRING | read-only | The entire Link State Advertisement, including its header. |
| INT ospfLsdbAge | 1.3.6.1.2.1.13.4.1.6 | INTEGER | read-only | This field is the age of the link state advertisement in seconds. |
| ARE ospfLsdbAreaId | 1.3.6.1.2.1.13.4.1.1 | AreaID | read-only | The 32 bit identifier of the Area from which the LSA was received. |
| INT ospfLsdbChecksum | 1.3.6.1.2.1.13.4.1.7 | INTEGER | read-only | 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. |
| ospfLsdbEntry | 1.3.6.1.2.1.13.4.1 | not-accessible | A single Link State Advertisement. | |
| IP ospfLsdbLSID | 1.3.6.1.2.1.13.4.1.3 | IpAddress | read-only | 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. |
| ROU ospfLsdbRouterId | 1.3.6.1.2.1.13.4.1.4 | RouterID | read-only | The 32 bit number that uniquely identifies the originating router in the Autonomous System. |
| INT ospfLsdbSequence | 1.3.6.1.2.1.13.4.1.5 | INTEGER | read-only | 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. |
| ospfLsdbTable | 1.3.6.1.2.1.13.4 | not-accessible | The OSPF Process's Links State Database. | |
| INT ospfLsdbType | 1.3.6.1.2.1.13.4.1.2 | INTEGER | read-only | The type of the link state advertisement. Each link state type has a separate advertisement format. |
| VAL ospfNBMANbrStatus | 1.3.6.1.2.1.13.10.1.9 | Validation | read-write | 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. |
| NUM ospfNbrAddressLessIndex | 1.3.6.1.2.1.13.10.1.2 | InterfaceIndex | read-write | 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 | 1.3.6.1.2.1.13.10.1 | not-accessible | The information regarding a single neighbor. | |
| CTR ospfNbrEvents | 1.3.6.1.2.1.13.10.1.7 | Counter | read-only | The number of times this neighbor relationship has changed state, or an error has occurred. |
| IP ospfNbrIpAddr | 1.3.6.1.2.1.13.10.1.1 | IpAddress | read-write | The IP address of this neighbor. |
| GAU ospfNbrLSRetransQLen | 1.3.6.1.2.1.13.10.1.8 | Gauge | read-only | The current length of the retransmission queue. |
| INT ospfNbrOptions | 1.3.6.1.2.1.13.10.1.4 | INTEGER | read-only | 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. |
| DES ospfNbrPriority | 1.3.6.1.2.1.13.10.1.5 | DesignatedRouterPriority | read-write | 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. |
| ROU ospfNbrRtrId | 1.3.6.1.2.1.13.10.1.3 | RouterID | read-only | A 32-bit integer (represented as a type IpAddress) uniquely identifying the neighboring router in the Autonomous System. |
| INT ospfNbrState | 1.3.6.1.2.1.13.10.1.6 | INTEGER | read-only | The State of the relationship with this Neighbor. |
| ospfNbrTable | 1.3.6.1.2.1.13.10 | not-accessible | A table of non-virtual neighbor information. | |
| CTR ospfOriginateNewLSAs | 1.3.6.1.2.1.13.1.9 | Counter | read-only | The number of new link-state advertisements that have been originated. This number is incremented each time the router originates a new LSA. |
| ROU ospfRouterId | 1.3.6.1.2.1.13.1.1 | RouterID | read-write | 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. |
| CTR ospfRxNewLSAs | 1.3.6.1.2.1.13.1.10 | Counter | read-only | 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. |
| CTR ospfSpfRuns | 1.3.6.1.2.1.13.2.1.4 | Counter | read-only | 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. |
| ospfStubAreaEntry | 1.3.6.1.2.1.13.3.1 | not-accessible | The metric for a given Type of Service that will be advertised by a default Area Border Router into a stub area. | |
| ARE ospfStubAreaID | 1.3.6.1.2.1.13.3.1.1 | AreaID | read-write | The 32 bit identifier for the Stub Area. On creation, this can be derived from the instance. |
| ospfStubAreaTable | 1.3.6.1.2.1.13.3 | not-accessible | The set of metrics that will be advertised by a default Area Border Router into a stub area. | |
| BIG ospfStubMetric | 1.3.6.1.2.1.13.3.1.3 | BigMetric | read-write | 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. |
| VAL ospfStubStatus | 1.3.6.1.2.1.13.3.1.4 | Validation | read-write | 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. |
| TOS ospfStubTOS | 1.3.6.1.2.1.13.3.1.2 | TOSType | read-write | The Type of Service associated with the metric. On creation, this can be derived from the instance. |
| T/F ospfTOSSupport | 1.3.6.1.2.1.13.1.8 | TruthValue | read-write | The router's support for type-of-service routing. |
| INT ospfVersionNumber | 1.3.6.1.2.1.13.1.3 | INTEGER | read-only | The current version number of the OSPF protocol is 2. |
| ARE ospfVirtIfAreaID | 1.3.6.1.2.1.13.9.1.1 | AreaID | read-write | The Transit Area that the Virtual Link traverses. By definition, this is not 0.0.0.0 |
| OCT ospfVirtIfAuthKey | 1.3.6.1.2.1.13.9.1.9 | OCTET STRING | read-write | 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. |
| ospfVirtIfEntry | 1.3.6.1.2.1.13.9.1 | not-accessible | Information about a single Virtual Interface. | |
| CTR ospfVirtIfEvents | 1.3.6.1.2.1.13.9.1.8 | Counter | read-only | The number of state changes or error events on this Virtual Link |
| HEL ospfVirtIfHelloInterval | 1.3.6.1.2.1.13.9.1.5 | HelloRange | read-write | 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. |
| ROU ospfVirtIfNeighbor | 1.3.6.1.2.1.13.9.1.2 | RouterID | read-write | The Router ID of the Virtual Neighbor. |
| UPT ospfVirtIfRetransInterval | 1.3.6.1.2.1.13.9.1.4 | UpToMaxAge | read-write | 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. |
| NUM ospfVirtIfRtrDeadInterval | 1.3.6.1.2.1.13.9.1.6 | PositiveInteger | read-write | 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. |
| INT ospfVirtIfState | 1.3.6.1.2.1.13.9.1.7 | INTEGER | read-only | OSPF virtual interface states. |
| VAL ospfVirtIfStatus | 1.3.6.1.2.1.13.9.1.10 | Validation | read-write | 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. |
| ospfVirtIfTable | 1.3.6.1.2.1.13.9 | not-accessible | Information about this router's virtual interfaces. | |
| UPT ospfVirtIfTransitDelay | 1.3.6.1.2.1.13.9.1.3 | UpToMaxAge | read-write | The estimated number of seconds it takes to transmit a link- state update packet over this interface. |
| ARE ospfVirtNbrArea | 1.3.6.1.2.1.13.11.1.1 | AreaID | read-only | The Transit Area Identifier. |
| ospfVirtNbrEntry | 1.3.6.1.2.1.13.11.1 | not-accessible | Virtual neighbor information. | |
| CTR ospfVirtNbrEvents | 1.3.6.1.2.1.13.11.1.6 | Counter | read-only | The number of times this virtual link has changed its state, or an error has occurred. |
| IP ospfVirtNbrIpAddr | 1.3.6.1.2.1.13.11.1.3 | IpAddress | read-only | The IP address this Virtual Neighbor is using. |
| GAU ospfVirtNbrLSRetransQLen | 1.3.6.1.2.1.13.11.1.7 | Gauge | read-only | The current length of the retransmission queue. |
| INT ospfVirtNbrOptions | 1.3.6.1.2.1.13.11.1.4 | INTEGER | read-only | 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. |
| ROU ospfVirtNbrRtrId | 1.3.6.1.2.1.13.11.1.2 | RouterID | read-only | A 32-bit integer uniquely identifying the neighboring router in the Autonomous System. |
| INT ospfVirtNbrState | 1.3.6.1.2.1.13.11.1.5 | INTEGER | read-only | The state of the Virtual Neighbor Relationship. |
| ospfVirtNbrTable | 1.3.6.1.2.1.13.11 | not-accessible | A table of virtual neighbor information. |
RFC description
OSPF routing protocol MIB defining textual conventions and general protocol variables.
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