Huawei Quidway NetEngine80E Configuration Manual page 329

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
Issue 02 (2014-09-30)
rule [ rule-id ] { deny | permit } [ fragment-type fragment-type-name |
source { source-ip-address source-wildcard | any } | time-range time-
name | vpn-instance vpn-instance-name ]
The rule for the basic ACL is configured.
When a filtering policy of a routing protocol is used to filter routes:
– If the action specified in an ACL rule is permit, a route that matches the rule
will be received or advertised by the system.
– If the action specified in an ACL rule is deny, a route that matches the rule will
not be received or advertised by the system.
– If a route has not matched any ACL rules, the route will not be received or
advertised by the system.
– If an ACL does not contain any rules, all routes matching the route-policy that
references the ACL will not be received or advertised by the system.
– If the ACL referenced by the route-policy does not exist, all routes matching the
route-policy will be received or advertised by the system.
– In the configuration order, the system first matches a route with a rule that has a
smaller number and then matches the route with a rule with a larger number.
Routes can be filtered using a blacklist or a whitelist:
Route filtering using a blacklist: Configure a rule with a smaller number and
specify the action deny in this rule to filter out the unwanted routes. Then,
configure another rule with a larger number in the same ACL and specify the
action permit in this rule to receive or advertise the other routes.
Route filtering using a whitelist: Configure a rule with a smaller number and
specify the action permit in this rule to permit the routes to be received or
advertised by the system. Then, configure another rule with a larger number in
the same ACL and specify the action deny in this rule to filter out unwanted
routes.
– Based on the advanced ACL:
1. Run:
filter acl-name acl-name export
The filter outgoing Type 3 LSAs in the area are filtered.
2. Run:
quit
Return to the system view.
3. Run:
Run acl name acl-name advance [ number acl-number2 ] [ match-order
{ auto | config } ]
The basic ACL view is displayed.
4. Run:
rule [ rule-id ] { deny | permit } protocol [ source { source-ip-address
source-wildcard | any } | time-range time-name ]
The rule for the advanced ACL is configured.
When a filtering policy of a routing protocol is used to filter routes:
– If the action specified in an ACL rule is permit, a route that matches the rule
will be received or advertised by the system.
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5 OSPF Configuration
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