Verilink WANsuite 5230 (34-00304.F) Product Manual - Manual (Page 181)

V T 1 0 0 I n t e r f a c e 4-65
Area ID This parameter has the same format as the IP Address of the Mask Address.
Values: 0.0.0.0
−
255.255.255.255
Default: 0.0.0.0
Enable Displays whether or not this Area is enabled.
Values: Enable, Disable
Default: Enable
Auth Type Indicates type of Authentication.
Values: Simple, None
Default: None
Stub An area can be configured as stub when there is a single exit point from the
area, or when the choice of exit point need not be made on a per-external-
destination basis.
Values: Yes, No
Default: No
Address Summary A configured address range specifies what addresses are contained within an
area. When summarizing the routes in an area to inform other areas, all routes
falling within the configured range are described by a single LSA, thus
decreasing the size of the LSA database.
Values: 0.0.0.0
−
255.255.255.255
Default: 0.0.0.0
Mask Summary IP Mask of the summary to be added.
Values: 0.0.0.0
−
255.255.255.255
Default: 0.0.0.0
Advertise Describes the local state of a router or network. This includes the state of the
route’s interfaces and adjacencies. Each link state advertisement is flooded
throughout the routing domain. The collected link state advertisements of all
routers and networks form the protocol's topological database.
Values: Yes, No
Default: No
Virtual Link Table Screen
To permit maximum flexibility, OSPF allows the configuration of virtual links
to enable the backbone area to appear contiguous despite the physical reality.
In OSPF, the backbone is defined as an Area ID of 0.0.0.0. This backbone
cannot be disconnected in any way or some areas of the Autonomous System
become unreachable. This is because all inter-area traffic must go through the
backbone. In fact, the backbone is responsible of all inter-area routing
information distribution.