Ospf - D-Link DGS-3324SRi User Manual

Parameter
Interface Name
IP Address
TX Mode
RX Mode
Authentication
Password
State
Interface Metric
Click Apply to implement changes made.

OSPF

The Open Shortest Path First (OSPF) routing protocol uses a link -state algorithm to determine routes to network
destinations. A "link" is an interface on a router and the "state" is a description of that interface and its relationship to
neighboring routers. The state contains information such as the IP address, subnet mask, type of network the interface is
attached to, other routers attached to the network, etc. The collection of link-states is then collected in a link-state database
that is maintained by routers running OSPF.
OSPF specifies how routers will communicate to maintain their link-state database and defines several concepts about the
topology of networks that use OSPF.
To limit the extent of link-state update traffic between routers, OSPF defines the concept of Area. All routers within an
area share the exact same link-state database, and a change to this database on one router triggers an update to the link-state
database of all other routers in that area. Routers that have interfaces connected to more than one area are called Border
Routers and take the responsibility of distributing routing information between areas.
One area is defined as Area 0 or the Backbone. This area is central to the rest of the network in that all other areas have a
connection (through a router) to the backbone. Only routers have connections to the backbone and OSPF is structured such
that routing information changes in other areas will be introduced into the backbone, and then propagated to the rest of the
network.
When constructing a network to use OSPF, it is generally advisable to begin with the backbone (area 0) and work outward
Link-State Algorithm
An OSPF router uses a link-state algorithm to build a shortest path tree to all destinations known to the router. The
following is a simplified description of the algorithm's steps:
When OSPF is started, or when a change in the routing information changes, the router generates a link-state
advertisement. This advertisement is a specially formatted packet that contains information about all the link-
states on the router.
xStack Stackable Gigabit Layer 3 Switch Manual
Description
The name of the IP interface on which RIP is to be setup. This interface must be
previously configured on the Switch.
The IP address corresponding to the Interface Name showing in the field above.
Toggle among Disabled, V1 Only, V1 Compatible, and V2 Only. This entry specifies
which version of the RIP protocol will be used to transmit RIP packets. Disabled
prevents the transmission of RIP packets.
Toggle among Disabled, V1 Only, V2 Only, and V1 or V2. This entry specifies which
version of the RIP protocol will be used to interpret received RIP packets. Disabled
prevents the reception of RIP packets.
Toggle between Disabled and Enabled to specify that routers on the network should
us the Password above to authenticate router table exchanges.
A password to be used to authenticate communication between routers on the
network.
Toggle between Disabled and Enabled to disable or enable this RIP interface on the
switch.
A read only field that denotes the Metric value of the current IP Interface setting.
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