gated RIP protocol statement

   rip yes|no|on|off [ {
       broadcast ;
       nobroadcast ;
       nocheckzero;
       preference preference ;
       defaultmetric metric ;
       interface interface_list [noripin] [noripout]
           [metricin metric] [metricout metric]
           [version 1]|[version 2 [multicast|broadcast]];
       . . .
       trustedgateways gateway_list ;
       sourcegateways gateway_list ;
       traceoptions traceoptions ;
   } ] ;

   rip on ;

broadcast

Specifies that RIP packets will be broadcast regardless of the number of
interfaces present. This is useful when propagating static routes or routes learned from another protocol into RIP. 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 RIP packets will not be broadcast on attached interfaces,
even if there is more than one. If a sourcegateways clause is present, routes will still be unicast directly to that gateway.

nocheckzero

Specifies that RIP should not make sure that reserved fields in incoming
Version 1 RIP packets are zero. Normally RIP will reject packets where the reserved fields are zero.

preference preference

Sets the preference for routes learned from RIP. The default preference
is 100. This preference may be overridden by a preference specified in import policy.

defaultmetric metric

Defines the metric used when advertising routes via RIP that were learned from other protocols. If not specified, the default value is 16 (unreachable). This choice of values requires you to explicitly specify a
metric in order to export routes from other protocols into RIP. This metric may be overridden by a metric specified in export policy.

interface interface_list

Controls various attributes of sending RIP on specific interfaces. See ``gated interfaces statements'' for the description of the
interface_list variable. The possible parameters are:

noripin

Specifies that RIP packets received via the specified interface
will be ignored. The default is to listen to RIP on all interfaces.

noripout

Specifies that no RIP packets will be sent on the specified
interfaces. The default is to send RIP on all interfaces when in broadcast mode.

metricin metric

Specifies the RIP metric to add to incoming routes before they are installed in the routing table. The default is the kernel
interface metric plus 1 (which is the default RIP hop count). If this value is specified, it will be used as the absolute value, and the kernel metric will not be added. This option is used to make this router prefer RIP routes learned via the specified interface(s) less than RIP routes from other interfaces.

metricout metric

Specifies the RIP metric to be added to routes that are sent via the specified interface(s). The default is zero. This option is used
to make other routers prefer other sources of RIP routes over this router.

version 1

Specifies that RIP packets sent via the specified interface(s) will
be Version 1 packets. This is the default.

version 2

Specifies that RIP Version 2 packets will be sent on the specified
interfaces(s). If IP multicast support is available on this interface, the default is to send full Version 2 packets. If it is not available, Version 1-compatible Version 2 packets will be sent.

multicast

Specifies that RIP Version 2 packets should be multicast on this
interface. This is the default.

broadcast

Specifies that RIP Version 1-compatible Version 2 packets should
be broadcast on this interface, even if IP multicast is available.

trustedgateways gateway_list

Defines the list of gateways from which RIP will accept updates.
The gateway_list is simply a list of host names or IP addresses. By default, all routers on the shared network are trusted to supply routing information. But if the trustedgateways clause is specified, only updates from the gateways in the list are accepted.

sourcegateways gateway_list

Defines a list of routers to which RIP sends packets directly, not
through multicast or broadcast. By default, RIP packets are broadcast to every system on the shared network. If the sourcegateways statement is used, only updates from the gateways in the list are accepted.

traceoptions trace_options

Specifies the tracing options for RIP. (See
``gated trace statements'').

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