filter (OSPF area view)
Use filter to configure OSPF to filter inbound/outbound Type-3 LSAs on an ABR.
Use undo filter to disable Type-3 LSA filtering.
Syntax
filter { ipv4-acl-number | prefix-list prefix-list-name | route-policy route-policy-name } { export | import }
undo filter { export | import }
Default
Type-3 LSAs are not filtered.
Views
OSPF area view
Predefined user roles
network-admin
Parameters
ipv4-acl-number: Specifies an IPv4 ACL by its number in the range of 2000 to 3999 to filter inbound/outbound Type-3 LSAs.
prefix-list-name: Specifies an IP prefix list by its name, a case-sensitive string of 1 to 63 characters, to filter inbound/outbound Type-3 LSAs.
route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters, to filter inbound/outbound Type-3 LSAs.
export: Filters Type-3 LSAs advertised to other areas.
import: Filters Type-3 LSAs advertised into the local area.
Usage guidelines
This command applies only to an ABR.
Examples
# Use IP prefix list my-prefix-list to filter inbound Type-3 LSAs. Use basic ACL 2000 to filter outbound Type-3 LSAs in OSPF Area 1.
<Sysname> system-view [Sysname] ospf 100 [Sysname-ospf-100] area 1 [Sysname-ospf-100-area-0.0.0.1] filter prefix-list my-prefix-list import [Sysname-ospf-100-area-0.0.0.1] filter 2000 export