Asante Technologies 40240/40480-10G - Manual (Page 727)

redistribute
This command imports external routing information from other routing domains (that
is, protocols or static routes) into the autonomous system. Use the no form to
disable this feature.
Syntax
[no] redistribute (ospf | static} [metric <metric-value>]
• ospf - External routes will be imported from the Open Shortest Path First
(OSPF) protocol into this routing domain.
• static - Static routes will be imported into this routing domain.
• metric-value - Metric value assigned to all external routes for the specified
protocol. (Range: 1-15)
Command Mode
Router Configuration
Default Setting
redistribution - none:
metric-value - set by the default-metric command (see page 42-7)
Command Usage
• When a metric value has not been configured by the redistribute command,
the default-metric command (page 42-7) 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)#
42-11
Routing Information Protocol (RIP)
42