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. |