Brocade Communications Systems FastIron SX 800 Configuration Manual page 205

To configure redistribution, perform the following tasks.
1. Configure redistribution filters (optional). You can configure filters to permit or deny redistribution for a route based on its origin
(OSPF, BGP4, and so on), the destination network address, and the route's metric. You also can configure a filter to set the
metric based on these criteria.
2. Change the default redistribution metric (optional). The Brocade device assigns a RIP metric of 1 to each redistributed route by
default. You can change the default metric to a value up to 15.
3. Enable redistribution.
NOTE
Do not enable redistribution until you configure the other redistribution
parameters.
Configuring redistribution filters
RIP redistribution filters apply to all interfaces. Use route maps to define how you want to deny or permit redistribution.
NOTE
The default redistribution action is permit, even after you configure and apply redistribution filters to the virtual routing interface.
If you want to tightly control redistribution, apply a filter to deny all routes as the last filter (the filter with the highest ID), and then
apply filters to allow specific routes.
A route map is a named set of match conditions and parameter settings that the Brocade device can use to modify route attributes and
to control redistribution of the routes into other protocols. A route map consists of a sequence of up to 50 instances. The Brocade device
evaluates a route according to a route map's instances in ascending numerical order. The route is first compared against instance 1, then
against instance 2, and so on. If a match is found, the Brocade device stops evaluating the route against the route map instances.
Route maps can contain match statements and set statements. Each route map contains a permit or deny action for routes that match
the match statements:
• If the route map contains a permit action, a route that matches a match statement is permitted; otherwise, the route is denied.
• If the route map contains a deny action, a route that matches a match statement is denied.
• If a route does not match any match statements in the route map, the route is denied. This is the default action. To change the
default action, configure the last match statement in the last instance of the route map to "permit any any".
• If there is no match statement, the route is considered to be a match.
• For route maps that contain address filters, AS-path filters, or community filters, if the action specified by a filter conflicts with
the action specified by the route map, the route map's action takes precedence over the individual filter's action.
If the route map contains set statements, routes that are permitted by the route map's match statements are modified according to the
set statements.
In RIP, the match statements are based on prefix lists and access control lists. Set statements are based on tag values and metric values.
To configure redistribution filters, enter the following command.
device(config-rip-router)# redistribute connected route-map routemap1
Syntax: [no] redistribute {connected | bgp | ospf | static [metric value | route-map name]}
The connected keyword applies redistribution to connected types.
The bgp keyword applies redistribution to BGP4 routes.
The ospf keyword applies redistribution to OSPF routes.
FastIron Ethernet Switch Layer 3 Routing
53-1003627-04
Configuring RIP parameters
205