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Conﬁguring gated

Conﬁguring the OSPF Protocol

Chapter 3 67

The following is an example of the network deﬁnition in the Router A’s

/etc/gated.conf ﬁle:

ospf yes

area 0.0.0.1

networks {

193.2.1.16 mask 0xfffffff0 ;

193.2.1.32 mask 0xfffffff0 ;

};

interface 193.2.1.33 {

...

};

...

The interface Statement

The interface statement in the OSPF protocol deﬁnition speciﬁes the

interface to use while communicating with the speciﬁed networks. You

can specify the interface with an address (for example, 193.2.1.36), a

domain or interface name (for example, lan0 or lan1), a wild card name

(for example, lan*), or all (the order of precedence is address, name,

wild card name, all). You can specify multiple interface statements

using different clauses. If you specify a clause more than once, the

instance with the most speciﬁc interface reference is used.

You can specify the cost clause optionally to deﬁne a cost of sending a

packet on the interface. This cost is advertised as the link cost for this

interface. See “Cost” on page 79 for more information on setting interface

costs.

You can also enable or disable the interface deﬁnition. If you do not

explicitly specify disable, an interface deﬁnition is enabled by default.

OSPF supports the following types of network interfaces:

• A multicast (or broadcast) network is a network that supports two or

more attached routers and allows a single message to be addressed

to a set of network nodes at the same time. An example of a multicast

network is an Ethernet LAN.

• A non-broadcast multi-access (NBMA) network is a network that

supports multiple attached routers, but does not support

broadcasting of messages. An example of an NBMA network is an

X.25 PDN.

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HP 11i Manual do Utilizador Página 67