Cabletron Systems SmartSwitch 8-slot, User'S Reference Manual

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Chapter 6: Routing Policy Configuration Guide
SSR User Reference Manual 6 - 9
secondary authentication key. In the router configuration mode, instead of specifying
the key for each interface (which can be up to 16 characters long), a key-chain
identifier is specified.
Configure Simple Routing Policies
Simple routing policies provide an efficient way for routing information to be
exchanged between routing protocols. The redistribute command can be used to
redistribute routes from one routing domain into another routing domain.
Redistribution of routes between routing domains is based on route policies. A route
policy is a set of conditions based on which routes are redistributed. While the
redistribute command is expected to satisfy the export policy requirement for most
users, complex export policies may require the use of the commands listed under
Export Policies.
The general syntax of the redistribute command is as follows:
ip-router policy redistribute from-proto <protocol> to-proto <protocol>
[network <ipAddr-mask> [exact|refines|between <low-high>]] [metric
<number>|restrict] [source-as <number>] [target-as <number>]
The from-proto parameter specifies the protocol of the source routes. The values for
the from-proto parameter are rip, ospf, bgp, direct, static, aggregate and ospf-ase. The
to-proto parameter specifies the destination protocol where the routes are to be
exported. The values for the to-proto parameter are rip, ospf and bgp. The network
parameter provides a means to define a filter for the routes to be distributed. The
network parameter defines a filter that is made up of an IP address and a mask. Routes
that match the filter are considered as eligible for redistribution.
Every protocol (RIP, OSPF, and BGP) has a configurable parameter that specifies
default-metric associated with routes exported to that protocol. If a metric is not
explicitly specified with the redistribute command, then it is inherited from the default-
metric associated with the protocol to which the routes are being exported.
Redistributing Static Routes
Static routes may be redistributed to another routing protocol such as RIP or OSPF by
the following command. The network parameter specifies the set of static routes that
will be redistributed by this command. If all static routes are to be redistributed set the
network parameter to all. Note that the network parameter is a filter that is used to
specify routes that are to be redistributed.