Huawei Quidway NetEngine80E Configuration Manual page 198

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
l Based on the named advanced ACL:
l Based on the IP prefix: filter-policy ip-prefix ip-prefix-name export [ protocol [ process-
If the routing information to be advertised by RIP contains the routes imported from other routing
protocols, you can specify protocol to filter the specified routes. If protocol is not specified, all
the routing information to be advertised will be filtered, including the imported routes and local
RIP routes (directly connected routes).
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Issue 02 (2014-09-30)
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.
1. Run filter-policy acl-name acl-name export [ protocol [ process-id ]| interface-type
interface-number ], the imported routes are filtered when being advertised.
2. Run quit, return to the system view.
3. 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 ]
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.
id ]| interface-type interface-number ]
NOTE
The Tag field in RIP is 16 bits in length, whereas the Tag field in other routing protocols is 32 bits in length.
If the routes of other routing protocols are imported and the tag is used in the routing policy, ensure that
the tag value does not exceed 65535. Otherwise, the routing policy becomes invalid or the matching result
is incorrect.
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, a rule is configured for the basic ACL.
3 RIP Configuration
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