Link ID is the object attached to the router’s link. The value de-
pends on the Type, as follows:
LS_ASE The destination IP network number.
LS_NET The designated router’s IP interface address.
LS_RTR The neighbor’s OSPF router ID.
LS_SUM_ASB The AS boundary router’s OSPF router ID.
LS_SUM_NET The destination IPnetwork number.
LS_STUB The default destination (0.0.0.0).
Advrtr lists the OSPF router ID of the advertisement’s originator,
which is given for the Type fields above.
Age lists the time in seconds since this link state advertisement was
originated.
Len lists the length in bytes of this link state advertisement.
Seq # is a sequential number identifying each successive instance of
a link state advertisement, indicating old and duplicate entries.
Metric is the cost of this route.
Using the Network Control Language
Managing the Open Shortest Path First Protocol
16-76