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. 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. You can use the following menu to specify the area identifier, or other key routing parameters as described in the following table.
Parameter | Default | Description |
Area ID*1 | 0.0.0.0 | A |
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| This identifier can be in the form of an IP address or integer. Each |
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| port on the switch can be configured to represent one OSPF area. |
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| You must first specify OSPF areas for global access in the Area ID |
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| Configuration menu, before they can be used for a specific IP |
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| interface. |
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| ID 0.0.0.0 is used for the OSPF backbone. |
Router Priority | 1 | The priority used when selecting the designated router and |
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| designated backup router. |
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| Range: |
Interface Cost | 100 | Explicitly specify the cost of sending a packet on the interface. |
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| Range: |
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WGS3 Layer 3 Switch User’s Manual | - 180 - |