TP-Link T3700G-28TQ User Manual page 207

Passive Mode:
MTU Ignore:
Database Filter:
Authentication
Type:
Authentication Key
ID:
Authentication Key:
State:
Make an interface passive to prevent OSPF from forming an
adjacency on an interface. OSPF advertises networks
attached to passive interfaces as stub networks. Interfaces are
not passive by default.
Disables OSPF MTU mismatch detection on received
database description packets. Default value is Disable (MTU
mismatch detection is enabled).
To prevent outgoing link-state advertisements (LSAs) flooding
out of an OSPF interface. The default is Disable, all outgoing
LSAs are flooded out of the interface.
Displays the authentication type of the interface. One of the
following:
default: The authentication type is same with the

associated area's authentication type.
null: No authentication.

simple: Use simple password.

md5: Use md5 message-digest algorithm.

Displays the active authentication key ID of the interface.
Displays the active authentication key of the interface.
Displays the current state of the selected router interface. One
of the following:
Down: This is the initial interface state. In this state, the

lower-level protocols have indicated that the interface is
unusable. In this state, interface parameters will be set to
their initial values. All interface timers will be disabled, and
there will be no adjacencies associated with the interface.
Loopback: In this state, the router's interface to the

network is looped back either in hardware or software.
The interface is unavailable for regular data traffic.
However, it may still be desirable to gain information on
the quality of this interface, either through sending ICMP
pings to the interface or through something like a bit error
test. For this reason, IP packets may still be addressed to
an interface in Loopback state. To facilitate this, such
interfaces are advertised in router- LSAs as single host
routes, whose destination is the interface IP address.
Waiting: The router is trying to determine the identity of

the (Backup) Designated Router by monitoring received
Hello Packets. The router is not allowed to elect a Backup
Designated Router or a Designated Router until it
transitions out
unnecessary changes of (Backup) Designated Router.
DR: This router is itself the Designated Router on the

attached network. Adjacencies are established to all other
routers attached to the network. The router must also
originate a Network LSA for the network node. The
Network LSA will contain links to all routers (including the
Designated Router itself) attached to the network.
BDR: This router is itself the Backup Designated Router

on the attached network. It will be promoted to
Designated Router if the present Designated Router fails.
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of Waiting state. This prevents