Checking The Configurations - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
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7.6.4 Checking the Configurations

After IS-IS is enabled to import routes from other protocols, run the following commands to
verify that the configurations are correct.
Procedure
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Issue 02 (2014-09-30)
d. Run rule [ rule-id ] { deny | permit } protocol [ source { source-ip-address
source-wildcard | any } | time-range time-name ]
the basic 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.
– Based on the IP prefix: filter-policy ip-prefix ip-prefix-name import
– Based on the Route-Policy: filter-policy route-policy route-policy-name import
NOTE
After this command is run, only external routes that meet the specified conditions can be
advertised to the IS-IS routing domain.
Run the display isis lsdb [ { level-1 | level-2 } | verbose | { local | lsp-id | is-name symbolic-

*

name } ] [ process-id | vpn-instance vpn-instance-name ] command to check IS-IS LSDB
information.
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7 IS-IS Configuration
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, a rule is configured for
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