Dell Brocade DCX, Руководство по настройке

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800 BigIron RX Series Configuration Guide
53-1001810-01
Filtering
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For example, when you configure parameters for redistributing routes into BGP, one of the optional
parameters is a route map. If you specify a route map as one of the redistribution parameters, the
router will match the route against the match statements in the route map. If a match is found and
if the route map contains set statements, the router will set attributes in the route according to the
set statements.
To create a route map, you define instances of the map. Each instance is identified by a sequence
number.
To define a route map, use the procedures in the following sections.
Entering the route map Into the software
To add instance 1 of a route map named “GET_ONE” with a permit action, enter the following
command.
BigIron RX(config)# route-map GET_ONE permit 1
BigIron RX(config-routemap GET_ONE)#
Syntax: [no] route-map <map-name> permit | deny <num>
As shown in this example, the command prompt changes to the Route Map level. You can enter
the match and set statements at this level. Refer to
“Specifying the match conditions” on page 800
and “Setting parameters in the routes” on page 804.
The <map-name> is a string of characters that names the map. Map names can be up to 32
characters in length.
The permit | deny parameter specifies the action the router will take if a route matches a match
statement.
•
If you specify deny, the device does not advertise or learn the route.
•
If you specify permit, the device applies the match and set statements associated with this
route map instance.
The <num> parameter specifies the instance of the route map you are defining.
To delete a route map, enter a command such as the following. When you delete a route map, all
the permit and deny entries in the route map are deleted.
BigIron RX(config)# no route-map Map1
This command deletes a route map named “Map1”. All entries in the route map are deleted.
To delete a specific instance of a route map without deleting the rest of the route map, enter a
command such as the following.
BigIron RX(config)# no route-map Map1 permit 10
This command deletes the specified instance from the route map but leaves the other instances of
the route map intact.
Specifying the match conditions
Use the following command to define the match conditions for instance 1 of the route map
GET_ONE. This instance compares the route updates against BGP4 address filter 11.
BigIron RX(config-routemap GET_ONE)# match address-filters 11