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.
l
Configure an advanced ACL:
1.
Run:
filter-policy
acl6-name
acl6-name
import
OSPFv3 is configured to filter the imported routes.
2.
Run:
quit
Return to the system view.
3.
Run
acl ipv6
name
acl-name
[
number
acl-number2
] [
match-order
{
auto
|
config
} ]
The basic ACL view is displayed.
4.
Run
rule
[
rule-id
] {
deny
|
permit
}
protocol
[
source
{
source-ipv6-address
prefix-length
|
source-ipv6-address
/
prefix-length
|
any
} |
time-range
time-
name
]
*
A rule is configured for the advanced ACL.
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.
l
Based on the IP prefix:
HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
6 OSPFv3 Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
425
