The MIB module to describe the OSPF Version 2 Protocol. Note that some objects in this MIB module may pose a significant security risk. Refer to the Security Considerations section in the document defining this MIB module for more information read-write current 1.3.6.1.2.1.14.1.1 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. read-write current 1.3.6.1.2.1.14.1.2 The administrative status of OSPF in the router. The value 'enabled' denotes that the OSPF Process is active on at least one inter- face; 'disabled' disables it on all inter- faces. 1 2 read-only current 1.3.6.1.2.1.14.1.3 The current version number of the OSPF proto- col is 2. 2 read-only current 1.3.6.1.2.1.14.1.4 A flag to note whether this router is an area border router. 1 2 read-write current 1.3.6.1.2.1.14.1.5 A flag to note whether this router is config- ured as an Autonomous System border router. 1 2 read-only current 1.3.6.1.2.1.14.1.6 The number of external (LS type 5) link-state advertisements in the link-state database. read-only current 1.3.6.1.2.1.14.1.7 The 32-bit unsigned sum of the LS checksums of the external link-state advertisements con- tained 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. read-write current 1.3.6.1.2.1.14.1.8 The router's support for type-of-service rout- ing. 1 2 read-only current 1.3.6.1.2.1.14.1.9 The number of new link-state advertisements that have been originated. This number is in- cremented each time the router originates a new LSA. read-only current 1.3.6.1.2.1.14.1.10 The number of link-state advertisements re- ceived determined to be new instantiations. This number does not include newer instantia- tions of self-originated link-state advertise- ments. read-write current 1.3.6.1.2.1.14.1.11 The maximum number of non-default AS- external-LSAs entries that can be stored in the link-state database. If the value is -1, then there is no limit. When the number of non-default AS-external-LSAs in a router's link-state database reaches ospfExtLsdbLimit, the router enters Overflow- State. The router never holds more than ospfExtLsdbLimit non-default AS-external-LSAs in its database. OspfExtLsdbLimit MUST be set identically in all routers attached to the OSPF backbone and/or any regular OSPF area. (i.e., OSPF stub areas and NSSAs are excluded). read-write current 1.3.6.1.2.1.14.1.12 A Bit Mask indicating whether the router is forwarding IP multicast (Class D) datagrams based on the algorithms defined in the Multi- cast Extensions to OSPF. Bit 0, if set, indicates that the router can forward IP multicast datagrams in the router's directly attached areas (called intra-area mul- ticast routing). Bit 1, if set, indicates that the router can forward IP multicast datagrams between OSPF areas (called inter-area multicast routing). Bit 2, if set, indicates that the router can forward IP multicast datagrams between Auto- nomous Systems (called inter-AS multicast rout- ing). Only certain combinations of bit settings are allowed, namely: 0 (no multicast forwarding is enabled), 1 (intra-area multicasting only), 3 (intra-area and inter-area multicasting), 5 (intra-area and inter-AS multicasting) and 7 (multicasting everywhere). By default, no mul- ticast forwarding is enabled. read-write current 1.3.6.1.2.1.14.1.13 The number of seconds that, after entering OverflowState, a router will attempt to leave OverflowState. This allows the router to again originate non-default AS-external-LSAs. When set to 0, the router will not leave Overflow- State until restarted. read-write current 1.3.6.1.2.1.14.1.14 The router's support for demand routing. 1 2 read-write current 1.3.6.1.2.1.14.1.15 Indicates metrics used to choose among multiple AS- external-LSAs. When RFC1583Compatibility is set to enabled, only cost will be used when choosing among multiple AS-external-LSAs advertising the same destination. When RFC1583Compatibility is set to disabled, preference will be driven first by type of path using cost only to break ties. 1 2 read-write current 1.3.6.1.2.1.14.1.16 The router's support for Opaque LSA types. 1 2 read-write current 1.3.6.1.2.1.14.1.17 The router's support for OSPF traffic engineering. 1 2 read-write current 1.3.6.1.2.1.14.1.1 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. read-write current 1.3.6.1.2.1.14.1.2 The administrative status of OSPF in the router. The value 'enabled' denotes that the OSPF Process is active on at least one inter- face; 'disabled' disables it on all inter- faces. 1 2 read-only current 1.3.6.1.2.1.14.1.3 The current version number of the OSPF proto- col is 2. 2 read-only current 1.3.6.1.2.1.14.1.4 A flag to note whether this router is an area border router. 1 2 read-write current 1.3.6.1.2.1.14.1.5 A flag to note whether this router is config- ured as an Autonomous System border router. 1 2 read-only current 1.3.6.1.2.1.14.1.6 The number of external (LS type 5) link-state advertisements in the link-state database. read-only current 1.3.6.1.2.1.14.1.7 The 32-bit unsigned sum of the LS checksums of the external link-state advertisements con- tained 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. read-write current 1.3.6.1.2.1.14.1.8 The router's support for type-of-service rout- ing. 1 2 read-only current 1.3.6.1.2.1.14.1.9 The number of new link-state advertisements that have been originated. This number is in- cremented each time the router originates a new LSA. read-only current 1.3.6.1.2.1.14.1.10 The number of link-state advertisements re- ceived determined to be new instantiations. This number does not include newer instantia- tions of self-originated link-state advertise- ments. read-write current 1.3.6.1.2.1.14.1.11 The maximum number of non-default AS- external-LSAs entries that can be stored in the link-state database. If the value is -1, then there is no limit. When the number of non-default AS-external-LSAs in a router's link-state database reaches ospfExtLsdbLimit, the router enters Overflow- State. The router never holds more than ospfExtLsdbLimit non-default AS-external-LSAs in its database. OspfExtLsdbLimit MUST be set identically in all routers attached to the OSPF backbone and/or any regular OSPF area. (i.e., OSPF stub areas and NSSAs are excluded). read-write current 1.3.6.1.2.1.14.1.12 A Bit Mask indicating whether the router is forwarding IP multicast (Class D) datagrams based on the algorithms defined in the Multi- cast Extensions to OSPF. Bit 0, if set, indicates that the router can forward IP multicast datagrams in the router's directly attached areas (called intra-area mul- ticast routing). Bit 1, if set, indicates that the router can forward IP multicast datagrams between OSPF areas (called inter-area multicast routing). Bit 2, if set, indicates that the router can forward IP multicast datagrams between Auto- nomous Systems (called inter-AS multicast rout- ing). Only certain combinations of bit settings are allowed, namely: 0 (no multicast forwarding is enabled), 1 (intra-area multicasting only), 3 (intra-area and inter-area multicasting), 5 (intra-area and inter-AS multicasting) and 7 (multicasting everywhere). By default, no mul- ticast forwarding is enabled. read-write current 1.3.6.1.2.1.14.1.13 The number of seconds that, after entering OverflowState, a router will attempt to leave OverflowState. This allows the router to again originate non-default AS-external-LSAs. When set to 0, the router will not leave Overflow- State until restarted. read-write current 1.3.6.1.2.1.14.1.14 The router's support for demand routing. 1 2 read-write current 1.3.6.1.2.1.14.1.15 Indicates metrics used to choose among multiple AS- external-LSAs. When RFC1583Compatibility is set to enabled, only cost will be used when choosing among multiple AS-external-LSAs advertising the same destination. When RFC1583Compatibility is set to disabled, preference will be driven first by type of path using cost only to break ties. 1 2 read-write current 1.3.6.1.2.1.14.1.16 The router's support for Opaque LSA types. 1 2 read-write current 1.3.6.1.2.1.14.1.17 The router's support for OSPF traffic engineering. 1 2 not-accessible current 1.3.6.1.2.1.14.2.1 Information describing the configured parame- ters and cumulative statistics of one of the router's attached areas. not-accessible current 1.3.6.1.2.1.14.3.1 The metric for a given Type of Service that will be advertised by a default Area Border Router into a stub area. not-accessible current 1.3.6.1.2.1.14.4.1 A single Link State Advertisement. not-accessible obsolete 1.3.6.1.2.1.14.5.1 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 not-accessible current 1.3.6.1.2.1.14.6.1 A metric to be advertised, for a given type of service, when a given host is reachable. not-accessible current 1.3.6.1.2.1.14.7.1 The OSPF Interface Entry describes one inter- face from the viewpoint of OSPF. not-accessible current 1.3.6.1.2.1.14.8.1 A particular TOS metric for a non-virtual in- terface identified by the interface index. not-accessible current 1.3.6.1.2.1.14.9.1 Information about a single Virtual Interface. not-accessible current 1.3.6.1.2.1.14.10.1 The information regarding a single neighbor. not-accessible current 1.3.6.1.2.1.14.11.1 Virtual neighbor information. not-accessible current 1.3.6.1.2.1.14.12.1 A single Link State Advertisement. not-accessible current 1.3.6.1.2.1.14.14.1 A range of 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. Note that if ranges are range configured such that one range subsumes another range (e.g., 10.0.0.0 mask 255.0.0.0 and 10.1.0.0 mask 255.255.0.0), the most specific match is the preferred one. not-accessible current 1.3.6.1.2.1.14.17.1 A single Link State Advertisement. not-accessible current 1.3.6.1.2.1.14.18.1 A single Link State Advertisement. read-only current 1.3.6.1.2.1.14.2.1.1 A 32-bit integer uniquely identifying an area. Area ID 0.0.0.0 is used for the OSPF backbone. read-write obsolete 1.3.6.1.2.1.14.2.1.2 The authentication type specified for an area. Additional authentication types may be assigned locally on a per Area basis. read-write current 1.3.6.1.2.1.14.2.1.3 Indicates whether an area is a Stub area, NSSA, or standard area. Type-5 AS-External LSAs and Type-11 Opaque LSAs are not imported into Stub Areas or NSSAs. NSSAs import AS- External data as Type-7 LSAs 1 2 3 read-only current 1.3.6.1.2.1.14.2.1.4 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. read-only current 1.3.6.1.2.1.14.2.1.5 The total number of area border routers reach- able within this area. This is initially zero, and is calculated in each SPF Pass. read-only current 1.3.6.1.2.1.14.2.1.6 The total number of Autonomous System border routers reachable within this area. This is initially zero, and is calculated in each SPF Pass. read-only current 1.3.6.1.2.1.14.2.1.7 The total number of link-state advertisements in this area's link-state database, excluding AS External LSA's. read-only current 1.3.6.1.2.1.14.2.1.8 The 32-bit unsigned sum of the link-state ad- vertisements' 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 data- base, and to compare the link-state database of two routers. read-write current 1.3.6.1.2.1.14.2.1.9 The variable ospfAreaSummary controls the im- port of summary LSAs into stub and NSSA areas. It has no effect on other areas. If it is noAreaSummary, the router will neither originate nor propagate summary LSAs into the stub or NSSA area. It will rely entirely on its default route. If it is sendAreaSummary, the router will both summarize and propagate summary LSAs. 1 2 read-write current 1.3.6.1.2.1.14.2.1.10 This object permits management of the table by facilitating actions such as row creation, construction and destruction. 1 2 -- the following value is a state: -- this value may be read, but not written 3 -- the following three values are -- actions: these values may be written, -- but are never read 4 5 6 read-write current 1.3.6.1.2.1.14.2.1.11 Indicates an NSSA Border router's ability to perform NSSA translation of type-7 LSAs into type-5 LSAs. 1 2 read-only current 1.3.6.1.2.1.14.2.1.12 Indicates if and how an NSSA Border router is performing NSSA translation of type-7 LSAs into type-5 LSAs. When this object set to enabled, the NSSA Border router's OspfAreaNssaExtTranslatorRole has been set to always. When this object is set to elected, a candidate NSSA Border router is Translating type-7 LSAs into type-5. When this object is set to disabled, a candidate NSSA Border router is NOT translating type-7 LSAs into type-5. 1 2 3 read-write current 1.3.6.1.2.1.14.2.1.13 The number of seconds after an elected translator determines its services are no longer required, that it should continue to perform its translation duties. read-only current 1.3.6.1.2.1.14.2.1.14 Indicates the number of Translator State changes that have occurred since the last boot-up. read-only current 1.3.6.1.2.1.14.3.1.1 The 32 bit identifier for the Stub Area. On creation, this can be derived from the in- stance. read-only current 1.3.6.1.2.1.14.3.1.2 The Type of Service associated with the metric. On creation, this can be derived from the instance. read-write current 1.3.6.1.2.1.14.3.1.3 The metric value applied at the indicated type of service. By default, this equals the least metric at the type of service among the inter- faces to other areas. read-write current 1.3.6.1.2.1.14.3.1.4 This object permits management of the table by facilitating actions such as row creation, construction and destruction. 1 2 -- the following value is a state: -- this value may be read, but not written 3 -- the following three values are -- actions: these values may be written, -- but are never read 4 5 6 read-write current 1.3.6.1.2.1.14.3.1.5 This variable displays the type of metric ad- vertised as a default route. 1 -- OSPF Metric 2 -- external type 1 3 -- external type 2 read-only current 1.3.6.1.2.1.14.4.1.1 The 32 bit identifier of the Area from which the LSA was received. read-only current 1.3.6.1.2.1.14.4.1.2 The type of the link state advertisement. Each link state type has a separate advertise- ment format. 1 2 3 4 5 -- but see ospfExtLsdbTable 6 7 10 read-only current 1.3.6.1.2.1.14.4.1.3 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. read-only current 1.3.6.1.2.1.14.4.1.4 The 32 bit number that uniquely identifies the originating router in the Autonomous System. read-only current 1.3.6.1.2.1.14.4.1.5 The sequence number field is a signed 32-bit integer. It is used to detect old and dupli- cate link state advertisements. The space of sequence numbers is linearly ordered. The larger the sequence number the more recent the advertisement. read-only current 1.3.6.1.2.1.14.4.1.6 This field is the age of the link state adver- tisement in seconds. read-only current 1.3.6.1.2.1.14.4.1.7 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 connec- tionless datagrams; it is commonly referred to as the Fletcher checksum. read-only current 1.3.6.1.2.1.14.4.1.8 The entire Link State Advertisement, including its header. read-only obsolete 1.3.6.1.2.1.14.5.1.1 The Area the Address Range is to be found within. read-only obsolete 1.3.6.1.2.1.14.5.1.2 The IP Address of the Net or Subnet indicated by the range. read-write obsolete 1.3.6.1.2.1.14.5.1.3 The Subnet Mask that pertains to the Net or Subnet. read-write obsolete 1.3.6.1.2.1.14.5.1.4 This object permits management of the table by facilitating actions such as row creation, construction and destruction. 1 2 -- the following value is a state: -- this value may be read, but not written 3 -- the following three values are -- actions: these values may be written, -- but are never read 4 5 6 read-write obsolete 1.3.6.1.2.1.14.5.1.5 Subnets subsumed by ranges either trigger the advertisement of the indicated summary (adver- tiseMatching), or result in the subnet's not being advertised at all outside the area. 1 2 read-only current 1.3.6.1.2.1.14.6.1.1 The IP Address of the Host. read-only current 1.3.6.1.2.1.14.6.1.2 The Type of Service of the route being config- ured. read-write current 1.3.6.1.2.1.14.6.1.3 The Metric to be advertised. read-write current 1.3.6.1.2.1.14.6.1.4 This object permits management of the table by facilitating actions such as row creation, construction and destruction. 1 2 -- the following value is a state: -- this value may be read, but not written 3 -- the following three values are -- actions: these values may be written, -- but are never read 4 5 6 read-write current 1.3.6.1.2.1.14.6.1.5 The Area the Host Entry is to be found within. read-only current 1.3.6.1.2.1.14.7.1.1 The IP address of this OSPF interface. read-only current 1.3.6.1.2.1.14.7.1.2 For the purpose of easing the instancing of addressed and address less interfaces; This variable takes the value 0 on interfaces with IP Addresses, and the corresponding value of ifIndex for interfaces having no IP Address. "d" read-write current 1.3.6.1.2.1.14.7.1.3 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. read-write current 1.3.6.1.2.1.14.7.1.4 The OSPF interface type. By way of a default, this field may be intuited from the corresponding value of ifType. Broad- cast LANs, such as Ethernet and IEEE 802.5, take the value 'broadcast', X.25 and similar technologies take the value 'nbma', and links that are definitively point to point take the value 'pointToPoint'. 1 2 3 5 read-write current 1.3.6.1.2.1.14.7.1.5 The OSPF interface's administrative status. The value formed on the interface, and the in- terface will be advertised as an internal route to some area. The value 'disabled' denotes that the interface is external to OSPF. 1 2 read-write current 1.3.6.1.2.1.14.7.1.6 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 eligi- ble 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. read-write current 1.3.6.1.2.1.14.7.1.7 The estimated number of seconds it takes to transmit a link state update packet over this interface. read-write current 1.3.6.1.2.1.14.7.1.8 The number of seconds between link-state ad- vertisement retransmissions, for adjacencies belonging to this interface. This value is also used when retransmitting database descrip- tion and link-state request packets. read-write current 1.3.6.1.2.1.14.7.1.9 The length of time, in seconds, between the Hello packets that the router sends on the in- terface. This value must be the same for all routers attached to a common network. read-write current 1.3.6.1.2.1.14.7.1.10 The number of seconds that a router's Hello packets have not been seen before it's neigh- bors 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. read-write current 1.3.6.1.2.1.14.7.1.11 The larger time interval, in seconds, between the Hello packets sent to an inactive non- broadcast multi- access neighbor. read-only current 1.3.6.1.2.1.14.7.1.12 The OSPF Interface State. 1 2 3 4 5 6 7 read-only current 1.3.6.1.2.1.14.7.1.13 The IP Address of the Designated Router. read-only current 1.3.6.1.2.1.14.7.1.14 The IP Address of the Backup Designated Router. read-only current 1.3.6.1.2.1.14.7.1.15 The number of times this OSPF interface has changed its state, or an error has occurred. read-write current 1.3.6.1.2.1.14.7.1.16 The cleartext password used as an OSPF Authentication key when simplePassword security is enabled. This object does not access any OSPF Cryptogaphic (e.g. MD5) Authentication Key under any circumstance. If the key length is shorter than 8 octets, the agent will left adjust and zero fill to 8 octets. Unauthenticated interfaces need no authentication key, and simple password authentication cannot use a key of more than 8 octets. Note that the use of simplePassword authentication is NOT recommended when there is concern regarding attack upon the OSPF system. SimplePassword authentication is only sufficient to protect against accidental misconfigurations because it re-uses cleartext passwords. [RFC-1704] When read, ospfIfAuthKey always returns an Octet String of length zero. read-write current 1.3.6.1.2.1.14.7.1.17 This object permits management of the table by facilitating actions such as row creation, construction and destruction. 1 2 -- the following value is a state: -- this value may be read, but not written 3 -- the following three values are -- actions: these values may be written, -- but are never read 4 5 6 read-write current 1.3.6.1.2.1.14.7.1.18 The way multicasts should forwarded on this interface; not forwarded, forwarded as data link multicasts, or forwarded as data link uni- casts. Data link multicasting is not meaning- ful on point to point and NBMA interfaces, and setting ospfMulticastForwarding to 0 effective- ly disables all multicast forwarding. 1 -- no multicast forwarding 2 -- using multicast address 3 -- to each OSPF neighbor read-write current 1.3.6.1.2.1.14.7.1.19 Indicates whether Demand OSPF procedures (hel- lo suppression to FULL neighbors and setting the DoNotAge flag on propagated LSAs) should be per- formed on this interface. 1 2 read-write current 1.3.6.1.2.1.14.7.1.20 The authentication type specified for an in- terface. Additional authentication types may be assigned locally. Note that this object can be used to engage in significant attacks against an OSPF router. read-only current 1.3.6.1.2.1.14.7.1.21 The total number of link-local link state advertisements in this interface's link-local link state database. read-only current 1.3.6.1.2.1.14.7.1.22 The 32-bit unsigned sum of the link-state ad- vertisements' LS checksums contained in this interface's link-local link state database. The sum can be used to determine if there has been a change in the interface's link state data- base, and to compare the interface link-state database of routers attached to the same subnet. read-only current 1.3.6.1.2.1.14.8.1.1 The IP address of this OSPF interface. On row creation, this can be derived from the in- stance. read-only current 1.3.6.1.2.1.14.8.1.2 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 in- terfaces having no IP Address. On row crea- tion, this can be derived from the instance. "d" read-only current 1.3.6.1.2.1.14.8.1.3 The type of service metric being referenced. On row creation, this can be derived from the instance. read-write current 1.3.6.1.2.1.14.8.1.4 The metric of using this type of service on this interface. The default value of the TOS 0 Metric is 10^8 / ifSpeed. read-write current 1.3.6.1.2.1.14.8.1.5 This object permits management of the table by facilitating actions such as row creation, construction and destruction. 1 2 -- the following value is a state: -- this value may be read, but not written 3 -- the following three values are -- actions: these values may be written, -- but are never read 4 5 6 read-only current 1.3.6.1.2.1.14.9.1.1 The Transit Area that the Virtual Link traverses. By definition, this is not 0.0.0.0 read-only current 1.3.6.1.2.1.14.9.1.2 The Router ID of the Virtual Neighbor. read-write current 1.3.6.1.2.1.14.9.1.3 The estimated number of seconds it takes to transmit a link-state update packet over this interface. read-write current 1.3.6.1.2.1.14.9.1.4 The number of seconds between link-state ad- vertisement retransmissions, for adjacencies belonging to this interface. This value is also used when retransmitting database descrip- tion and link-state request packets. This value should be well over the expected round- trip time. read-write current 1.3.6.1.2.1.14.9.1.5 The length of time, in seconds, between the Hello packets that the router sends on the in- terface. This value must be the same for the virtual neighbor. read-write current 1.3.6.1.2.1.14.9.1.6 The number of seconds that a router's Hello packets have not been seen before it's neigh- bors declare the router down. This should be some multiple of the Hello interval. This value must be the same for the virtual neigh- bor. read-only current 1.3.6.1.2.1.14.9.1.7 OSPF virtual interface states. 1 -- these use the same encoding 4 -- as the ospfIfTable read-only current 1.3.6.1.2.1.14.9.1.8 The number of state changes or error events on this Virtual Link read-write current 1.3.6.1.2.1.14.9.1.9 The cleartext password used as an OSPF Authentication key when simplePassword security is enabled. This object does not access any OSPF Cryptogaphic (e.g. MD5) Authentication Key under any circumstance. If the key length is shorter than 8 octets, the agent will left adjust and zero fill to 8 octets. Unauthenticated interfaces need no authentication key, and simple password authentication cannot use a key of more than 8 octets. Note that the use of simplePassword authentication is NOT recommended when there is concern regarding attack upon the OSPF system. SimplePassword authentication is only sufficient to protect against accidental misconfigurations because it re-uses cleartext passwords. [RFC-1704] When read, ospfIfAuthKey always returns an Octet String of length zero. read-write current 1.3.6.1.2.1.14.9.1.10 This object permits management of the table by facilitating actions such as row creation, construction and destruction. 1 2 -- the following value is a state: -- this value may be read, but not written 3 -- the following three values are -- actions: these values may be written, -- but are never read 4 5 6 read-write current 1.3.6.1.2.1.14.9.1.11 The authentication type specified for a virtu- al interface. Additional authentication types may be assigned locally. Note that this object can be used to engage in significant attacks against an OSPF router. read-only current 1.3.6.1.2.1.14.9.1.12 The total number of link-local link state advertisements in this virtual interface's link-local link state database. read-only current 1.3.6.1.2.1.14.9.1.13 The 32-bit unsigned sum of the link-state ad- vertisements' LS checksums contained in this virtual interface's link-local link state database. The sum can be used to determine if there has been a change in the virtual interface's link state data- base, and to compare the virtual interface link-state database of the virtual neighbors. read-only current 1.3.6.1.2.1.14.10.1.1 The IP address this neighbor is using in its IP Source Address. Note that, on addressless links, this will not be 0.0.0.0, but the ad- dress of another of the neighbor's interfaces. read-only current 1.3.6.1.2.1.14.10.1.2 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. "d" read-only current 1.3.6.1.2.1.14.10.1.3 A 32-bit integer (represented as a type IpAd- dress) uniquely identifying the neighboring router in the Autonomous System. read-only current 1.3.6.1.2.1.14.10.1.4 A Bit Mask corresponding to the neighbor's op- tions field. Bit 0, 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. Bit 1, if set, indicates that the associated area accepts and operates on external informa- tion; if zero, it is a stub area. Bit 2, if set, indicates that the system is ca- pable of routing IP Multicast datagrams; i.e., that it implements the Multicast Extensions to OSPF. Bit 3, if set, indicates that the associated area is an NSSA. These areas are capable of carrying type 7 external advertisements, which are translated into type 5 external advertise- ments at NSSA borders. read-write current 1.3.6.1.2.1.14.10.1.5 The priority of this neighbor in the designat- ed router election algorithm. The value 0 sig- nifies that the neighbor is not eligible to be- come the designated router on this particular network. read-only current 1.3.6.1.2.1.14.10.1.6 The State of the relationship with this Neigh- bor. 1 2 3 4 5 6 7 8 read-only current 1.3.6.1.2.1.14.10.1.7 The number of times this neighbor relationship has changed state, or an error has occurred. read-only current 1.3.6.1.2.1.14.10.1.8 The current length of the retransmission queue. read-write current 1.3.6.1.2.1.14.10.1.9 This object permits management of the table by facilitating actions such as row creation, construction and destruction. 1 2 -- the following value is a state: -- this value may be read, but not written 3 -- the following three values are -- actions: these values may be written, -- but are never read 4 5 6 read-only current 1.3.6.1.2.1.14.10.1.10 This variable displays the status of the en- try. 'dynamic' and 'permanent' refer to how the neighbor became known. 1 -- learned through protocol 2 -- configured address read-only current 1.3.6.1.2.1.14.10.1.11 Indicates whether Hellos are being suppressed to the neighbor 1 2 read-only current 1.3.6.1.2.1.14.11.1.1 The Transit Area Identifier. read-only current 1.3.6.1.2.1.14.11.1.2 A 32-bit integer uniquely identifying the neighboring router in the Autonomous System. read-only current 1.3.6.1.2.1.14.11.1.3 The IP address this Virtual Neighbor is us- ing. read-only current 1.3.6.1.2.1.14.11.1.4 A Bit Mask corresponding to the neighbor's op- tions field. 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. Bit 2, if set, indicates that the system is Network Multicast capable; ie, that it imple- ments OSPF Multicast Routing. read-only current 1.3.6.1.2.1.14.11.1.5 The state of the Virtual Neighbor Relation- ship. 1 2 3 4 5 6 7 8 read-only current 1.3.6.1.2.1.14.11.1.6 The number of times this virtual link has changed its state, or an error has occurred. read-only current 1.3.6.1.2.1.14.11.1.7 The current length of the retransmission queue. read-only current 1.3.6.1.2.1.14.11.1.8 Indicates whether Hellos are being suppressed to the neighbor 1 2 read-only current 1.3.6.1.2.1.14.12.1.1 The type of the link state advertisement. Each link state type has a separate advertise- ment format. 5 11 read-only current 1.3.6.1.2.1.14.12.1.2 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. read-only current 1.3.6.1.2.1.14.12.1.3 The 32 bit number that uniquely identifies the originating router in the Autonomous System. read-only current 1.3.6.1.2.1.14.12.1.4 The sequence number field is a signed 32-bit integer. It is used to detect old and dupli- cate link state advertisements. The space of sequence numbers is linearly ordered. The larger the sequence number the more recent the advertisement. read-only current 1.3.6.1.2.1.14.12.1.5 This field is the age of the link state adver- tisement in seconds. read-only current 1.3.6.1.2.1.14.12.1.6 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 connec- tionless datagrams; it is commonly referred to as the Fletcher checksum. read-only current 1.3.6.1.2.1.14.12.1.7 The entire Link State Advertisement, including its header. read-only current 1.3.6.1.2.1.14.14.1.1 The Area the Address Aggregate is to be found within. read-only current 1.3.6.1.2.1.14.14.1.2 The type of the Address Aggregate. This field specifies the Lsdb type that this Address Ag- gregate applies to. 3 7 read-only current 1.3.6.1.2.1.14.14.1.3 The IP Address of the Net or Subnet indicated by the range. read-only current 1.3.6.1.2.1.14.14.1.4 The Subnet Mask that pertains to the Net or Subnet. read-write current 1.3.6.1.2.1.14.14.1.5 This object permits management of the table by facilitating actions such as row creation, construction and destruction. 1 2 -- the following value is a state: -- this value may be read, but not written 3 -- the following three values are -- actions: these values may be written, -- but are never read 4 5 6 read-write current 1.3.6.1.2.1.14.14.1.6 Subnets subsumed by ranges either trigger the advertisement of the indicated aggregate (ad- vertiseMatching), or result in the subnet's not being advertised at all outside the area. 1 2 read-only current 1.3.6.1.2.1.14.17.1.1 The IP Address of the interface from which the LSA was received if the interface is numbered. read-only current 1.3.6.1.2.1.14.17.1.2 The Interface Index of the interface from which the LSA was received if the interface is unnumbered. "d" read-only current 1.3.6.1.2.1.14.17.1.3 The type of the link state advertisement. Each link state type has a separate advertise- ment format. 9 read-only current 1.3.6.1.2.1.14.17.1.4 The Link State ID is an LS Type Specific field containing a 32 bit identifier in IP address format; it identifies the piece of the routing domain that is being described by the advertisement. read-only current 1.3.6.1.2.1.14.17.1.5 The 32 bit number that uniquely identifies the originating router in the Autonomous System. read-only current 1.3.6.1.2.1.14.17.1.6 The sequence number field is a signed 32-bit integer. It is used to detect old and dupli- cate link state advertisements. The space of sequence numbers is linearly ordered. The larger the sequence number the more recent the advertisement. read-only current 1.3.6.1.2.1.14.17.1.7 This field is the age of the link state adver- tisement in seconds. read-only current 1.3.6.1.2.1.14.17.1.8 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 connec- tionless datagrams; it is commonly referred to as the Fletcher checksum. read-only current 1.3.6.1.2.1.14.17.1.9 The entire Link State Advertisement, including its header. read-only current 1.3.6.1.2.1.14.18.1.1 The Transit Area that the Virtual Link traverses. By definition, this is not 0.0.0.0 read-only current 1.3.6.1.2.1.14.18.1.2 The Router ID of the Virtual Neighbor. read-only current 1.3.6.1.2.1.14.18.1.3 The type of the link state advertisement. Each link state type has a separate advertise- ment format. 9 read-only current 1.3.6.1.2.1.14.18.1.4 The Link State ID is an LS Type Specific field containing a 32 bit identifier in IP address format; it identifies the piece of the routing domain that is being described by the advertisement. read-only current 1.3.6.1.2.1.14.18.1.5 The 32 bit number that uniquely identifies the originating router in the Autonomous System. read-only current 1.3.6.1.2.1.14.18.1.6 The sequence number field is a signed 32-bit integer. It is used to detect old and dupli- cate link state advertisements. The space of sequence numbers is linearly ordered. The larger the sequence number the more recent the advertisement. read-only current 1.3.6.1.2.1.14.18.1.7 This field is the age of the link state adver- tisement in seconds. read-only current 1.3.6.1.2.1.14.18.1.8 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 connec- tionless datagrams; it is commonly referred to as the Fletcher checksum. read-only current 1.3.6.1.2.1.14.18.1.9 The entire Link State Advertisement, including its header. The values defined for the priority of a system for becoming the designated router. An OSPF Area Identifier. The range of ifIndex. This statement no longer used and is included for backwards- compatibility A OSPF Router Identifier. Type of Service is defined as a mapping to the IP Type of Service Flags as defined in the IP Forwarding Table MIB +-----+-----+-----+-----+-----+-----+-----+-----+ | | | | | PRECEDENCE | TYPE OF SERVICE | 0 | | | | | +-----+-----+-----+-----+-----+-----+-----+-----+ IP TOS IP TOS Field Policy Field Policy Contents Code Contents Code 0 0 0 0 ==> 0 0 0 0 1 ==> 2 0 0 1 0 ==> 4 0 0 1 1 ==> 6 0 1 0 0 ==> 8 0 1 0 1 ==> 10 0 1 1 0 ==> 12 0 1 1 1 ==> 14 1 0 0 0 ==> 16 1 0 0 1 ==> 18 1 0 1 0 ==> 20 1 0 1 1 ==> 22 1 1 0 0 ==> 24 1 1 0 1 ==> 26 1 1 1 0 ==> 28 1 1 1 1 ==> 30 The remaining values are left for future definition. The OSPF External Metric. The values that one might find or configure for variables bounded by the maximum age of an LSA. A positive integer. Values in excess are precluded as unnecessary and prone to interoperability issues. The OSPF Internal Metric. An indication of the operability of an OSPF function or feature. For example, The status of an interface: 'enabled' indicates that it is willing to communicate with other OSPF Routers, while 'disabled' indicates that it is not. 1 2 The range of intervals on which hello messages are exchanged.