3com S7906E Instruccion De Instalación
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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.
Configuring Stub Routers
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:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enter OSPF view
ospf [ process-id | router-id router-id
| vpn-instance instance-name ] *
| vpn-instance instance-name ] *
—
Configure the router as a
stub router
stub router
stub-router
Required
Not configured by default.
A stub router has nothing to do with a stub area.
Configuring OSPF Authentication
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.