The Link State Database window displays the following parameters:
Area ID — The link IP address.
Link Type — Each link state advertisement has a specific format. The link is a Router Link, Network Link, External Link, Summary Link or Stub Link.
Link ID — Identifies the routing domain piece described by the advertisement. It is either a router ID or an IP address.
Router ID — Identifies the originating router in the autonomous system.
Sequence Number — The number for the link. This parameter is used to detect old and duplicate links state advertisements. The larger the sequence number the more recent the advertisement.
Age — The link age state advertisement in seconds.
Checksum — This parameter is a checksum of the advertisement complete contents, excluding the Age value.