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Configuring gated
Configuring the OSPF Protocol
Chapter 3 77
backbone {
interface 15.13.115.156 {
enable ;
transitdelay 20 ;
priority 20 ;
hellointerval 30 ;
routerdeadinterval 120 ;
retransmitinterval 60 ;
};
};
If the router is directly attached via a point-to-point interface to a host
that is not running OSPF, you can prevent sending OSPF Hello packets
to the host. Do this by specifying the subhost statement with the host’s
address. You can optionally define the cost.
NOTE Backbones must be directly connected or contiguous. In some gated
implementations, you can configure a virtual link to join non-contiguous
backbone routers. HP-UX systems do not support virtual links.
Authentication
The OSPF protocol allows you to authenticate packets containing routing
information. You can configure the authentication on a per-area basis;
You can use different authentication methods in different areas.
gated supports a simple password authentication method. You can also
choose to have no authentication. You can use the authtype statement to
define the authentication method used for the area. 0 or none specifies
that routing exchanges in the area are not authenticated. 1 or simple
specifies that network passwords of up to 64 bits (8 characters) are used
to authenticate packets received from routers in the area.
In the simple password authentication method, all routers that interface
to a given network use the same password. The password is defined by
the authkey statement in the router’s interface definition. If you do not
configure a router with the same password as other routers in the
network, other networks discard the router’s packets. The password is