3com 8807 참조 가이드

C

HAPTER

 25: OSPF C

ONFIGURATION

 C

OMMANDS

Use the filter-policy export command to configure the rule used by OSPF to filter 
advertised routing information.

Use the undo filter-policy export command to cancel the filtering rules that 
have been set.

By default, no filtering of the advertised routing information is performed.

In some cases, it may be required that only the routing information meeting some 
conditions can be advertised. Then, the filter-policy command can be used to set 
the filtering conditions for the routing information to be advertised. Only the 
routing information passing the filtration can be advertised.

This command takes effect on the routes imported by OSPF using the 
import-route command. If the routing-protocol argument is specified, only the 
routes imported from this specified protocol are filtered. If the routing-protocol 
argument is not specified, all imported routes are filtered.

Related command: acl, ip ip-prefix.

# Configure OSPF to advertise only the routing information permitted by acl 2000.

[SW8800] acl number 2000

 

[3Com-acl-basic-2000] rule permit source 11.0.0.0  0.255.255.255

 

[3Com-acl-basic-2000] rule deny source any

 

[3Com-ospf-1] filter-policy 2000 export 

filter-policy { acl-number | ip-prefix ip-prefix-name } export

undo filter-policy { acl-number | ip-prefix ip-prefix-name} export

OSPF area view

acl-number: Specifies the number of the basic or advanced ACL used for filtering 
Type-3 LSAs.

ip-prefix-name: Specifies the name of the address prefix list used for filtering 
Type-3 LSAs.

Use the filter-policy export command to set the filter condition for the Type-3 
LSAs advertised from an OSPF area.

Use the undo filter-policy export command to cancel the set filter condition.

By default, no advertised Type-3 LSA is filtered.