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How to stop interfaces that develop adjacencies in OSPF

Resolution

To selectively prevent interfaces from forming adjacencies, issue the passive-interface command.

For routers that have many interfaces, configuring the passive-interface command on each interface can be too time consuming.

 

In these cases, perform these steps:

  1. Issue the passive-interface default command to make all interfaces passive by default.
  2. Issue the no passive-interface command on interfaces where adjacencies are desired.


For more information on stopping interfaces from developing adjacencies in OSPF, refer to Default Passive Interface Feature document.


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