Configuring Ospf Authentication; Configuring Stub Routers - H3C S7500E Series Operation Manual

Operation Manual – IPv4 Routing
H3C S7500E Series Ethernet Switches
Note:
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.
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.

3.7.8 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:
Enter system view
Enter OSPF view
Configure the router as a
stub router
Note:
A stub router has nothing to do with a stub area.

3.7.9 Configuring OSPF Authentication

By supporting packet authentication, OSPF receives packets that pass the
authentication only, so failed packets cannot establish neighboring relationships.
Follow these steps to configure OSPF authentication:
To do...
system-view
ospf [ process-id |
router-id router-id ] *
stub-router
Use the command...
3-37
Chapter 3 OSPF Configuration
Remarks
—
—
Required
Not configured by default