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>> Table: ospfLsdbTable - (.1.3.6.1.2.1.14.4.1)

Description: A single Link State Advertisement.

ospfLsdbTable
OIDNameTypeAccess
.1AreaIdIpAddressR
.2TypeENUMR
.3LsidIpAddressR
.4RouterIdIpAddressR
.5SequenceHexValueR
.6AgeINTEGERR
.7ChecksumHexValueR
.8AdvertisementOCTET STRINGR

AreaId
The 32 bit identifier of the Area from which the LSA

was received.
Type
The type of the link state advertisement.  Each link

state type has a separate advertisement format.
Enumerations:
  • routerLink (1)
  • networkLink (2)
  • summaryLink (3)
  • asSummaryLink (4)
  • asExternalLink (5)
  • multicastLink (6)
  • nssaExternalLink (7)
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
The 32 bit number that uniquely identifies the

originating router in the Autonomous System.
Sequence
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.
Age
This field is the age of the link state advertisement

in seconds.
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 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.
Advertisement
The entire Link State Advertisement, including its

header.


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