HP-UX Routing Services Administrator's Guide HP-UX 11i v2, HP-UX 11i v3 (B2355-91153, November 2011)

Figure 13 Backbone Configuration Example
The following is an example of the backbone router definition in router A’s /etc/gated.conf
file:
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 configured on a per-interface basis.
If a router has interfaces to more than one network, different passwords can be configured. This
is illustrated in Figure 14.
Configuring the OSPF Protocol 37