Link State Database; Application Example For Ospf - TP-Link JetStream T2700G-28TQ User Manual

10.9.11 Link State Database

Choose the menu Routing→OSPF→Link State Database to load the following page.
The following entries are displayed on this screen:
Link State Database

Process:
Area ID:
Advertising Router:
LSA Type:
Link State ID:
Age:
Sequence:
Checksum:
Options:

10.9.12 Application Example for OSPF

Network Requirements

1. The AS is divided into three areas and all switches in the AS run OSPF.
2. Switch A and Switch B act as ABRs to forward routing information between areas.
3. Each switch can learn routing information to all the network segments in the AS after the
configuration.
Figure10-56 Link State Database
Select one OSPF Process to display its link state database.
Displays the ID of the area to which the LSA belongs.
Displays the ID of the router that advertising the LSA.
The format and function of the link state advertisement. One of
the following: Router,
ASBR-Summary, External (Type 5), NSSA-External (Type 7).
The Link State ID identifies the piece of the routing domain
that is being described by the advertisement. The value of the
LS ID depends on the advertisement's LS type.
The time since the link state advertisement was first
originated, in seconds.
The sequence number field is an unsigned 32-bit integer. It is
used to detect old and duplicate link state advertisements. The
larger the sequence
advertisement.
The checksum is used to detect data corruption of an
advertisement. This
advertisement is being flooded, or while it is being held in a
router's memory. This field is the checksum of the complete
contents of the advertisement, except the LS age field.
The Options field in the link state advertisement header
indicates which optional capabilities are associated with the
advertisement.
209
Network, Network-Summary,
number, the more
corruption can occur
recent the
while an