3Com Switch 8800 Configuration Guide Chapter 22 IP Routing Policy Configuration
22-9
Operation Command
Cancel the setting for importing
routes of other protocols undo import-route protocol
By default, the routes discovered by other protocols will not be advertised.
Note:
In different routing protocol views, the parameter options are different. For details,
respectively refer to the import-route command in different protocols.
22.2.6 Configuring Route Filtering

I. Configuring to filter the received routes

Perform the following configuration in routing protocol view.
Define a policy to filter the routing information not satisfying the conditions while
receiving routes with the help of an ACL or address prefix-list. gateway specifies that
only the update packets from a particular neighboring router will be received.
Table 22-8 Configure to filter the received routes
Operation Command
Configure to filter the received routing
information advertised by the specified
address
filter-policy gateway ip-prefix-name
import
Cancel the filtering of the received
routing information advertised by the
specified address
undo filter-policy gateway
ip-prefix-name import
Configure to filter the received global
routing information filter-policy { acl-number | ip-prefix
ip-prefix-name } [ gateway ] import
Cancel the filtering of the received global
routing information
undo filter-policy { acl-number |
ip-prefix ip-prefix-name } [ gateway ]
import

II. Configuring to filter the advertised routes

You may define a route advertisement policy to filter advertised routing information.
This can be done by referencing an ACL or IP prefix-list to filter routing information that
does not meet the conditions, or by specifying a protocol to filter routing information of
the protocol only.
Perform the following configuration in routing protocol view.