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Configuring OSPF
Open Shortest Path First is more suited for large area networks which experience
frequent changes in the links. It also allows for subnets. This protocol actively tests the
status of each link to its neighbors to generate a shortest path tree, and builds a routing
table based on this information. (See “OSPFv2 Dynamic Routing Protocol” on chapter 4.)
OSPF then utilizes IP multicast to propagate routing information. A separate routing
area scheme is also used to further reduce the amount of routing traffic (chapter
2 ”Protocol Configuration”).
You can use the following menu to specify the area identifier, or other key routing
parameters as described in the following table.
Subnet Configuration: Modify OSPF Configuration
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Area ID : 0.0.0.0
Router Priority : 1
Interface Cost : 100
Transit Delay (in seconds) : 1
Retransmit Interval (in seconds): 5
Hello Interval (in seconds) : 10
Dead Interval (in seconds) : 40
Poll Interval (in seconds) : 120
Authentication Type : NONE
Authentication Key : MD5 Key Table
<Apply> <OK>
<Cancel>
Area ID.
| READ/WRITE
Use <TAB> or arrow keys to move, other keys to make changes.
Parameter Default Description
Area ID¹ 0.0.0.0 A 32-bit integer uniquely identifying an OSPF protocol broadcast
area. This identifier can be in the form of an IP address or
integer. Each port on the switch can be configured to represent
one OSPF area.
You must first specify OSPF areas for global access in the Area
ID Configuration menu, before they can be used for a specific IP
interface.(see chapter 2 “OSPF Area Configuration”)
ID 0.0.0.0 is used for the OSPF backbone.
Router
Priority
1 The priority used when selecting the designated router and
designated backup router.
Range: 0-255; Disable election: 0