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Cisco OSPF Command and Configuration Handbook by William R. Parkhurst - Ph.D., CCIE #2969

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Chapter 13. Passive OSPF Interfaces

passive-interface interface-name interface-number

Syntax Description:

  • interface-name—Name of the interface.

  • interface-number—Number of the interface.

Purpose: To prevent OSPF packets from being sent on the specified interface.

Initial Cisco IOS Software Release: 10.0

Configuration Example: Using a Passive Interface to Reduce Protocol Traffic

In Figure 13-1, Router B has a BGP neighbor relationship with Router C. The BGP routes learned by Router B from Router C are redistributed into OSPF. The network between Routers B and C needs to be advertised by OSPF to Router A so there is IP connectivity between Routers A and C. There is no need to send OSPF protocol packets to Router C. Therefore, the Serial 1 interface ...

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