PLANET WGS3-2820 - Manual (Page 225)

User’s Manual of WGS3-2820/WGS3-5220
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。 Authentication Key - Enter the OSPF Authentication Key for the specified interface. If you do not choose to use
authentication you will not be prompted to enter a key. If you choose 'simple' authentication you cannot use a key of
more than 8 octets. If you choose 'encrypt' the key may be up to 16 octets long. The key value will only be displayed
if you are logged on with Read/Write privileges, otherwise it will be displayed as asterisks.
。 Authentication ID - Enter the ID to be used for authentication. You will only be prompted to enter an ID when you
select 'Encrypt' as the authentication type. The ID is a number between 0 ad 255, inclusive.
。 Metric Cost - Enter the value on this interface for the cost TOS (type of service). The range for the metric cost is
between 1 and 65,535. Metric Cost is only configurable / displayed if OSPF is initialized on the interface.
Non-Configurable Data
。 IP Address - The IP address of the interface.
。 Subnet Mask - The subnet/network mask, that indicates the portion of the IP interface address that identifies the
attached network.
。 LSA Ack Interval - The number of seconds between LSA Acknowledgment packet transmissions, which must be
less than the Retransmit Interval.
。 OSPF Interface Type - The OSPF interface type, which will always be broadcast.
。 State - The current state of the selected router interface. One of:
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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.
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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 IP interface
address.
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Waiting - The router is trying to determine the identity of the (Backup) Designated Router for the network by
monitoring received Hello Packets. The router is not allowed to elect a Backup Designated Router or a
Designated Router until it transitions out of Waiting state. This prevents unnecessary changes of (Backup)
Designated Router.
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Designated Router - 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.
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Backup Designated Router - 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. The router establishes
adjacencies to all other routers attached to the network. The Backup Designated Router performs slightly
different functions during the Flooding Procedure, as compared to the Designated Router.