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>> Table: ospfIfTable - (.1.3.6.1.2.1.14.7.1)

Description: The OSPF Interface Entry describes one interface from the viewpoint of OSPF.

ospfIfTable
OIDNameTypeAccess
.1IfIpAddressIpAddressR
.2AddressLessIfINTEGERR
.3IfAreaIdIpAddressRW
.4IfTypeENUMR
.5IfAdminStatENUMR
.6IfRtrPriorityINTEGERRW
.7IfTransitDelayINTEGERRW
.8IfRetransIntervalINTEGERRW
.9IfHelloIntervalINTEGERRW
.10IfRtrDeadIntervalINTEGERRW
.11IfPollIntervalINTEGERRW
.12IfStateENUMR
.13IfDesignatedRouterIpAddressR
.14IfBackupDesignatedRouterIpAddressR
.15IfEventsCounterR
.16IfAuthKeyDisplayStringRW
.17IfStatusENUMR
.18IfMulticastForwardingENUMR
.19IfDemandENUMRW
.20IfAuthTypeINTEGERRW

IfIpAddress
The IP address of this OSPF interface.
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.
IfAreaId
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.
IfType
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'.
Enumerations:
  • broadcast (1)
  • nbma (2)
  • pointToPoint (3)
  • pointToMultipoint (5)
IfAdminStat
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. This variable is implicitly set by the value of

ipExtIfOspf.
Enumerations:
  • enabled (1)
  • disabled (2)
IfRtrPriority
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.
IfTransitDelay
The estimated number of seconds it takes to transmit a

link- state update packet over this interface.
IfRetransInterval
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.
IfHelloInterval
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.
IfRtrDeadInterval
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.
IfPollInterval
The larger time interval, in seconds, between the

Hello packets sent to an inactive non-broadcast multi-

access neighbor.
IfState
The OSPF Interface State.
Enumerations:
  • down (1)
  • loopback (2)
  • waiting (3)
  • pointToPoint (4)
  • designatedRouter (5)
  • backupDesignatedRouter (6)
  • otherDesignatedRouter (7)
IfDesignatedRouter
The IP Address of the Designated Router.
IfBackupDesignatedRouter
The IP Address of the Backup Designated Router.
IfEvents
The number of times this OSPF interface has changed

its state, or an error has occurred.
IfAuthKey
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.
IfStatus
This variable displays the status of  the  en-

try.  Setting it to 'invalid' has the effect of

rendering it inoperative.  The internal  effect

(row removal) is implementation dependent.
Enumerations:
  • valid (1)
  • invald (2)
IfMulticastForwarding
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.
Enumerations:
  • blocked (1)
  • multicast (2)
  • unicast (3)
IfDemand
Indicates whether Demand OSPF procedures (hel-

lo supression to FULL neighbors and setting the

DoNotAge flag on propagated LSAs) should be per-

formed on this interface.
Enumerations:
  • true (1)
  • false (2)
IfAuthType
The authentication type specified for  an  in-

terface.   Additional  authentication types may

be assigned locally.


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