Applying Filters To Advertised Routes - Huawei Quidway NetEngine80E Configuration Manual
Universal service router, ip routing
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HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
Prerequisites
Applying filters to received routes has been configured.
Procedure
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10.5 Applying Filters to Advertised Routes
By applying the related filters of routing policies to routing protocols, you can filter advertised
routes.
10.5.1 Before You Start
Before applying filters to advertised routes, familiarize yourself with the usage scenario,
complete the pre-configuration tasks, and obtain the required data. This can help you complete
the configuration task quickly and accurately.
Applicable Environment
After defining the filters including the IP prefix list, ACL, and Route-Policy related to the routing
policy, you need to import the filters to the protocols.
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Issue 02 (2014-09-30)
Run the display rip process-id route command to check information about the RIP routing
table.
Run the display ospf [ process-id ] routing command to check information about the OSPF
routing table.
Run the display isis [ process-id ] route command to check information about the ISIS
routing table.
Run the display bgp routing-table command to check information about the BGP routing
table.
Run the display ip routing-table command to check information about the public IPv4
routing table.
Run the display ip routing-table command on the neighboring router. You can find that
the routes that meet the matching rules set on the neighboring router are filtered or the
actions defined by the apply clauses are performed.
Filtering the advertised routes
Use the filter-policy command in the protocol view and import an ACL or an IP prefix list
to filter the advertised routes. Only the routes that meet the matching rules are advertised.
The filter-policy export command is used to filter the advertised routes.
For the distance vector (DV) protocol and the link state protocol, the procedures are
different after the filter-policy command is run.
– DV protocol
A DV protocol generates routes based on the routing table. The filters affect the route
received from the neighbor and the route to be sent to the neighbor.
– Link state protocol
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10 Routing Policy Configuration
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