Filtering Routes Received By Rip - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing

10.4.2 Filtering Routes Received by RIP

By applying filters, you can control the receiving of RIP routes.
Context
Perform the following steps on the router that runs RIP:
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
rip [ process-id ] [ vpn-instance vpn-instance-name ]
Step 3 Run any of the following commands as required:
l Based on the basic ACL:
Issue 02 (2014-09-30)
1. Run filter-policy { acl-number | acl-name acl-name } import [ interface-type interface-
number ], the filtering policy is configured for routes received by RIP.
2. Run quit, return to the system view.
3. Run acl { [ number ] acl-number1 | name acl-name basic [ number acl-number2 ] }
[ match-order { auto | config } ], the basic ACL view is displayed.
4. Run 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 ]
When the rule command is run to configure rules for a named ACL, only the source
address range specified by source and the time period specified by time-range are valid
as the rules.
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
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
*
, a rule is configured for the basic ACL.
10 Routing Policy Configuration
1223