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OSPF dialog box and item reference

The table below lists the OSPF tabs and describes the items in those tabs.


Tab Item Description
General

Contains general information about the version of OSPF running and the configuration of the router.

RouterID
The Router ID, which in OSPF has the same format as an IP Address but identifies the router independent of other routers in the OSPF domain.

AdminStat
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.The default is disabled.

VersionNumber
Current version number of OSPF.

AreaBdrRtrStatus
A flag to note if this router is an area border router. Note: Area must be enabled to create a virtual router interface.

ASBdrRtrStatus
Enabled as true indicates the router is configured as an Autonomous System border router.

ExternalSACount
The number of external (LS type 5) link state advertisements in the link state database.

ExternalSACksumSum
The 32-bit unsigned sum of the LS checksums of the external link state advertisements contained in the link state database. This sum is used to determine if there has been a change in a router's link state database and to compare the link state databases of two routers.

OriginateNewLSAs
The number of new link state advertisements that have been originated. This number is incremented each time the router originates a new LSA.

RxNewLSAs
The number of link state advertisements received that are determined to be new instantiations. This number does not include newer instantiations of self-originated link state advertisements.

10MbpsPortDefaultMetric
Indicates the cost associated with 10 Mb/s interface (port). The default is 100.

100MbpsPortDefaultMetric
Indicates the cost associated with 100 Mb/s interface (port). The default is 10.
General
1000MbpsPortDefaultMetric
Indicates the cost associated with 1000 Mb/s interface (port). The default is 1.

TrapEnable
Indicates whether or not to enable traps relating to the OSPF. The default is false.

AutoVirtLinkEnable
Enables or disables automatic creation of virtual links. The default is false.

SpfHoldDownTime
Allows the user to change the OSPF hold down timer value (3 to 60 seconds). The default is 10 seconds.

LastSpfRun
Used to indicate the time (SysUpTime) since the last SPF calculated by OSPF.
Area

Contains information describing the configured parameters and cumulative statistics of the router's attached areas.

AreaId
A 32-bit integer uniquely identifying an area. Area ID 0.0.0.0 is used for the OSPF backbone.

ImportASExtern
The area's support for importing AS external link state advertisements. Could be importExternal (default), importNotExternal, or importNssa (not so stubby area).

SpfRuns
Used to indicate the number of SPF calculations performed by OSPF.

AreaBdrRtrCount
The total number of area border routers reachable within this area. The value, initially zero, is calculated in each SPF Pass.

AsBdrRtrCount
The total number of autonomous system boundary routers (ASBRs) reachable within this area. The value, initially zero, is calculated in each SPF Pass.

AreaLSACount
The total number of link state advertisements in this area's link state database, excluding AS External LSAs.

AreaLSACksumSum
The 32-bit unsigned sum of the link state advertisements. This sum excludes external (LS type 5) link state advertisements. The sum is 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.

AreaSummary
The area's support for Summary advertisements in a stub area.

ImportSummary
The area's support for importing Summary advertisements into a stub area. This field should be used only if ImportASExtern or ImportNssa is not selected.


ActiveCount
The number of active interfaces in this area.
Stub Area Metric

Contains the set of metrics that are advertised by a default area border router into a stub area.

AreaID
The 32-bit identifier for the stub area. On creation, it is derived from the instance.

TOS
The type of service associated with the metric. On creation, it is derived from the instance.

Metric
The metric value applied at the indicated type of service. By default, it equals the lowest metric value at the type of service among the interfaces to other areas.

Status
This variable displays the status of the entry.

Metric Type
The type of metric used: ospfMetric (the OSPF metric), comparableCost (external type 1), or noncomparableCost (external type 2).
Interface

Displays information describing the interfaces from the viewpoint of OSPF.

IpAddress
The Internet Protocol address of the device used to represent a point of attachment in a TCP/IP internetwork.

AddressLessIf
Used 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.

AreaId
A 32-bit integer uniquely identifying an area. Area ID 0.0.0.0 is used for the OSPF backbone.

AdminStat
The administrative status of OSPF in the router. The value "enabled" denotes that the OSPF process is active on the interface; "disabled" disables it on this interfaces.

RtrPriority
The priority of this interface. Used in multiaccess 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.

TransitDelay
The estimated number of seconds it takes to transmit a link state update packet over this interface.

RetransInterval
The number of seconds between link state advertisement retransmissions. This value is also used for retransmission of database descriptions and link state request packets.

HelloInterval
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.

RtrDeadInterval
The number of seconds that a router's hello packets have not been seen before its neighbors declare the router down. This value should be a multiple of the hello interval and the same for the virtual neighbor.

PollInterval
The larger time interval, in seconds, between the Hello packets sent to an inactive nonbroadcast multiaccess neighbor.

State
The OSPF interface state.

DesignatedRouter
The IP address of the designated router.

BackupDesignatedRouter
The IP address of the designated backup router.

Events
The number of state changes or error events that have occurred through all interfaces.

AuthKey
The area's authorization type as a simple password, and the key, which is shorter than 8 octets. The agent will left adjust and zero fill to 8 octets.

AuthType
The type of authentication: 0 = none, 1 = simple password, 2 = MD5 authentication.

Status
Whether or not status is active.
Interface Metric

Indicates the metrics associated with the peer layer interface.

IpAddress
The Internet Protocol address of the device used to represent a point of attachment in a TCP/IP internetwork.

AddressLessIf
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.

TOS
Type of service is a mapping to the IP type of service flags as defined in the IP forwarding table MIB.

Value
The value advertised to other areas indicating the distance from the OSPF router to any network in the range.

Status
Active or not active. Not configurable.
Neighbor

Displays information describing the interfaces from the viewpoint of OSPF.

IpAddr
The device IP address.

AddressLessIndex
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 value is derived from the instance.

Rtrld
The router ID of the neighboring router, which in OSPF has the same format as an IP address but identifies the router independent of its IP address.

Options
A bit mask corresponding to the neighbor's options field.

Priority
Assignment of preferential treatment to place the transmitted packets in queues and possible selection of the priority field in the data link header when the packet is forwarded.

State
The OSPF Interface state.

Events
The number of state changes or error events that have occurred between the OSPF router and the neighbor router.

LSRetransQLen
The number of elapsed seconds between advertising retransmissions of the same packet to a neighbor.

HelloSuppressed
This variable indicates whether Hellos are being suppressed to a neighbor.
Virtual Interface

Displays information describing a virtual interface from the viewpoint of OSPF.

AreaID
An OSPF area identifier.

Neighbor
Virtual neighbor interfaced on the same network.

TransitDelay
The estimated number of seconds it takes to transmit a link state update packet over this interface.

RetransInterval
The number of seconds between link state advertisement retransmissions. This value is also used for retransmission of database descriptions and link state request packets.

HelloInterval
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.

RtrDeadInterval
The number of seconds that a router's hello packets have not been seen before its neighbors declare the router down. This value should be some multiple of the hello interval. It must be the same for the virtual neighbor.

State
The OSPF interface state: point-to-point (up) or down.

Events
The number of state changes or error events that have occurred through the virtual interface.

AuthKey
The area's authorization type as a simple password and the key, which is shorter than 8 octets. The agent will left adjust and zero fill to 8 octets.

Status
Active or inactive.

AuthType
Area authentication type: none (0), simple password (1), or MD5 encrypted (3).
Virtual Neighbor

Displays statistics for a virtual neighbor in a network.

Area
The subnetwork in which the virtual neighbor resides.

RtrId
A 32-bit integer (represented as a type IpAddress) uniquely identifying the neighboring router in the autonomous system.

IpAddr
The IP address of the virtual neighboring router.

Options
A bit mask corresponding to the neighbor's options field.

State
The OSPF interface state.

Events
The number of state changes or error events that have occurred between the OSPF router and the virtual neighbor router.

LSRetransQLen
The number of elapsed seconds between advertising retransmissions of the same packet to a neighbor.
Host

Indicates which hosts are directly attached to the router and the metrics and types of service that should be advertised for them.

IpAddress
The IP address of the host used to represent a point of attachment in a TCP/IP internetwork.

TOS
The type of service of the route being configured.

Metric
The metric advertised to other areas. The value indicates the distance from the OSPF router to any network in the range.

Status
Active if created.

AreaID
Area where host is found. By default, the area that is submitting the OSPF interface is in 0.0.0.0.
Link State DB

Contains the link state advertisements from throughout the areas to which the device is attached.

AreaId
A 32-bit integer uniquely identifying an area. Area ID 0.0.0.0 is used for the OSPF backbone.

Type
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 and similar technologies take the value nbma; and links that are definitively point-to-point links take the value pointToPoint.

LSID
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.

RouterID
A 32-bit integer uniquely identifying the router, which is advertising on this LSID.

Sequence
The sequence number is a signed 32-bit integer that identifies old and duplicate link state advertisements.

Age
The age in seconds of the link state advertisement.

Checksum
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 is 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.
Ext Link StateDB

Displays the characteristics of the external link state database.
ExtLinkDB
Type
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 and similar technologies take the value nbma; and links that are definitively point-to-point take the value pointToPoint.

LSID
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.

RouterID
A 32-bit integer uniquely identifying the router, which is advertising on this LSID.

Sequence
The sequence number is a signed 32-bit integer that identifies old and duplicate link state advertisements.

Age
The age in seconds of the link state advertisement.

Checksum
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 is 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.

Advertisement
Hex representation of the entire link state advertisement, including the header.
Area Aggregate
AreaID
The area in which the address would be found.

LsdbType
One of the following:
  • summaryLink--generates aggregated summary
  • nssaExternalLink -- generates aggregated NSSA external link

Net
Network IP address for the area range.

Mask
Network mask for the area range.

Effect
One of the following:
  • advertiseMatching--advertises the aggregate summary LSA with same LSID
  • doNotAdvertiseMatching--suppresses all networks that fall within the entire range
  • advertiseDoNotAggregate--advertises individual networks


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