User Manual

C HAPTER 49 | IP Routing Commands
Routing Information Protocol (RIP)
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COMMAND MODE
Router Configuration
COMMAND USAGE
◆ When a metric value has not been configured by the redistribute
command, the default-metric command sets the metric value to be
used for all imported external routes.
◆ A route metric must be used to resolve the problem of redistributing
external routes with incompatible metrics.
◆ It is advisable to use a low metric when redistributing routes from
another protocol into RIP. Using a high metric limits the usefulness of
external routes redistributed into RIP. For example, if a metric of 10 is
defined for redistributed routes, these routes can only be advertised to
routers up to 5 hops away, at which point the metric exceeds the
maximum hop count of 15. By defining a low metric of 1, traffic can
follow a imported route the maximum number of hops allowed within a
RIP domain. However, using a low metric can increase the possibility of
routing loops For example, this can occur if there are multiple
redistribution points and the router learns about the same external
network with a better metric from a redistribution point other than that
derived from the original source.
EXAMPLE
This example redistributes routes learned from OSPF and sets the metric
for all external routes imported from OSPF to a value of 3.
Console(config-router)#redistribute ospf metric 3
Console(config-router)#
This example redistributes static routes and sets the metric for all of these
routes to a value of 3.
Console(config-router)#redistribute static metric 3
Console(config-router)#
RELATED COMMANDS
default-metric (1459)