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gated.conf(4) gated.conf(4)

[metricout metric] ;

trustedgateways gateway_list ;

sourcegateways gateway_list ;

traceoptions trace_options ;

} ] ;

the hello statement enables or disables HELLO. If the hello statement is not speciﬁed, the default is

hello off. If enabled, HELLO will assume nobroadcast when there is only one interface and broad-

cast when there is more than one interface.

broadcast

Speciﬁes that HELLO packets will be broadcast regardless of the number of interfaces present.

This is useful when propagating static routes or routes learned from anther protocol into

HELLO. In some cases, the use of broadcast when only one network interface is present can

cause data packets to traverse a single network twice.

nobroadcast

Speciﬁes that HELLO packets will not be broadcast on attached interfaces, even if there are

more than one. If a sourcegateways clause is present, routes will still be unicast directly to

that gateway.

preference preference

Sets the preference for routes learned from HELLO. The default preference is 90. This prefer-

ence may be overridden by a preference speciﬁed in import policy.

defaultmetric metric

Deﬁnes the metric used when advertising routes via HELLO that were learned from other proto-

cols. If not speciﬁed, the default value is 30000 (unreachable). This choice of values requires you

to explicitly specify a metric in order to export routes from other protocols into HELLO. This

metric may be overridden by a metric speciﬁed in export policy.

interface interface_list

Controls various attributes of sending HELLO on speciﬁc interfaces. See the section on interface

list speciﬁcation for the description of the interface_list.

Note that if there are multiple interfaces conﬁgured on the same subnet, HELLO updates will

only be sent from ﬁrst one one which HELLO output is conﬁgured. This limitation is required

because of the way the Unix kernel operates. It will hopefully be removed in a future release.

The possible parameters are:

nohelloin

Speciﬁes that HELLO packets received via the speciﬁed interface will be ignored. The

default is to listen to HELLO on all nonloopback interfaces.

helloin

This is the default. This argument may be necessary when nohelloin is used on a wild-

card interface descriptor.

nohelloout

Speciﬁes that no HELLO packets will be sent on the speciﬁed interfaces. The default is to

send HELLO on all broadcast and nonbroadcast interfaces when in broadcast mode. The

sending of HELLO on point-to-point interfaces must be manually conﬁgured.

helloout

This is the default. This argument is necessary when it is desired to send HELLO on point-

to-point interfaces and may be necessary when nohelloin is used on a wildcard interface

descriptor.

metricin metric

Speciﬁes the HELLO metric to add to incoming routes before they are installed in the rout-

ing table. The default is the kernel interface metric plus 1 (which is the default HELLO hop

count). If this value is speciﬁed, it will be used as the absolute value. The kernel metric will

not be added. This option is used to make this router prefer HELLO routes learned via the

speciﬁed interface(s) less than HELLO routes from other interfaces.

metricout metric

Speciﬁes the HELLO metric to be added to routes that are send via the speciﬁed

interface(s). The default is zero. This option is used to make other routers prefer other

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