3com S7906E Manuel De Montage

 

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Different OSPF processes can disable the same interface from sending OSPF packets. Use of the 

silent-interface command disables only the interfaces associated with the current process rather 

than interfaces associated with other processes. 

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After an OSPF interface is set to silent, other interfaces on the router can still advertise direct 

routes of the interface in Router LSAs, but no OSPF packet can be advertised for the interface to 

find a neighbor. This configuration can enhance adaptability of OSPF networking and reduce 

resource consumption. 

 

A stub router is used for traffic control. It tells other OSPF routers not to use it to forward data, but they 

can have a route to it. 

The Router LSAs from the stub router may contain different link type values. A value of 3 means a link to 

the stub network, so the cost of the link remains unchanged. A value of 1, 2 or 4 means a point-to-point 

link, a link to a transit network or a virtual link. In such cases, a maximum cost value of 65535 is used. 

Thus, other neighbors find the links to the stub router have such big costs, they will not send packets to 

the stub router for forwarding as long as there is a route with a smaller cost.  

Follow these steps to configure a router as a stub router: 

Enter system view 

— 

Enter OSPF view 

ospf [ process-id | router-id router-id 
| vpn-instance instance-name ] * 

— 

Configure the router as a 
stub router 

Required 

Not configured by default. 

 

A stub router has nothing to do with a stub area. 

 

OSPF supports packet authentication to ensure the security of packet exchange.  

After authentication is configured, OSPF only receives packets that pass authentication, so failed 

packets cannot establish neighboring relationships.