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filter-policy import (OSPF view)
Use filter-policy import to configure OSPF to filter routes calculated using received LSAs.
Use undo filter-policy import to restore the default.
Syntax
filter-policy { acl-number [ gateway prefix-list-name ] | gateway prefix-list-name | prefix-list
prefix-list-name [ gateway prefix-list-name ] | route-policy route-policy-name } import
undo filter-policy import
Default
Routes calculated using received LSAs are not filtered.
Views
OSPF view
Predefined user roles
network-admin
Parameters
acl-number: Specifies an ACL by its number in the range of 2000 to 3999 to filter inbound routes by
destination.
gateway prefix-list-name: Specifies an IP prefix list by its name, a case-sensitive string of 1 to 63
characters, to filter inbound routes by next hop.
prefix-list prefix-list-name: Specifies an IP prefix list by its name, a case-sensitive string of 1 to 63
characters, to filter inbound routes by destination.
route-policy route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63
characters, to filter inbound routes.
Usage guidelines
To reference an advanced ACL (with a number from 3000 to 3999) in the command or in the specified
routing policy, configure the ACL in one of the following ways:
• To deny/permit a route with the specified destination, use the rule [ rule-id ] { deny | permit } ip
source sour-addr sour-wildcard command.
• To deny/permit a route with the specified destination and mask, use the rule [ rule-id ] { deny |
permit } ip source sour-addr sour-wildcard destination dest-addr dest-wildcard command.
The source keyword specifies the destination address of a route and the destination keyword specifies the
subnet mask of the destination address. The specified subnet mask must be contiguous. Otherwise, the
mask configuration does not take effect.
Examples
# Use ACL 2000 to filter inbound routes.
<Sysname> system-view
[Sysname] acl number 2000
[Sysname-acl-basic-2000] rule deny source 192.168.10.0 0.0.0.255
[Sysname-acl-basic-2000] quit
[Sysname] ospf 100
[Sysname-ospf-100] filter-policy 2000 import
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