Configuring Route Filtering - 3Com 8800 Configuration Manual

3Com Switch 8800 Configuration Guide
Cancel the setting for importing
routes of other protocols
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
Configure to filter the received routing
information advertised by the specified
address
Cancel the filtering of the received
routing information advertised by the
specified address
Configure to filter the received global
routing information
Cancel the filtering of the received global
routing information
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.
Operation
Operation
22-9
Chapter 22 IP Routing Policy Configuration
Command
undo import-route protocol
Command
filter-policy gateway ip-prefix-name
import
undo filter-policy
ip-prefix-name import
filter-policy { acl-number | ip-prefix
ip-prefix-name } [ gateway ] import
undo filter-policy
ip-prefix ip-prefix-name } [ gateway ]
import
gateway
{ acl-number |