| Parameter | Default | Description |
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| |||
| Area ID |
| An identifier for the transit area the virtual link crosses. |
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| Neighbor |
| The IP address of the OSPF router on this end of the |
|
| Router ID |
| virtual link. |
|
| Transit Delay | 1 second | The estimated number of seconds it takes to transmit a |
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|
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| link state update packet over this virtual link. |
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|
|
| Range: |
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| Retransmit | 5 seconds | The number of seconds between retransmitting |
|
| Interval |
| advertisements to the router at the other end on the |
|
|
|
| virtual link. This value is also used when retransmitting |
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|
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| database descriptions and |
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|
|
| Range: |
|
| Hello Interval² | 10 seconds | The interval, in seconds, between sending Hello packets |
|
|
|
| out the router interface. |
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|
|
| Range: |
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| Dead Interval² | 40 seconds | The number of seconds that a router’s Hello packets |
|
|
|
| have not been seen before the router at the other end of |
|
|
|
| the virtual link is declared down. This should be a |
|
|
|
| multiple of the Hello interval. |
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|
|
| Range: |
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| Authentication | None | Authentication can be used to ensure that routing |
|
| Type |
| information comes from a valid source. The options |
|
|
|
| include none or a simple password. |
|
| Authentication |
| A simple password must be provided if authentication is |
|
| Key |
| enabled. (An authentication string is case sensitive, and |
|
|
|
| can be up to 16 characters.) |
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|
OSPF Host Route Configuration
A host route is a prefix that will be advertised as a stub network in one of the router’s link state advertisements. These prefixes may be IP addresses of hosts directly attached to the router, which themselves do not run OSPF. The router advertises these addresses by proxy.
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