The LSAs to be sent are filtered.
By default, the LSAs to be sent are not filtered.
----End
4.6.7 (Optional) Configuring OSPF to Filter LSAs in an Area
Filtering LSAs in an area can prevent unnecessary LSA transmission. This reduces the size of
the LSDB on the neighboring switch and speeds up network convergence.
Context
After filtering conditions are set for the incoming or outgoing Type 3 LSAs (Summary LSAs)
in an area, only the Type 3 LSAs that meet the filtering conditions can be received or advertised.
This function is applicable only to the ABR.
Perform the following steps on the switch running OSPF.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
ospf [ process-id ]
The OSPF process view is displayed.
Step 3 Run:
area area-id
The OSPF area view is displayed.
Step 4 Filter incoming or outgoing Type 3 LSAs in the area.
l Filter incoming Type 3 LSAs in the area.
Run the filter { acl-number | acl-name acl-name | ip-prefix ip-prefix-name | route-policy
route-policy-name } export command to filter incoming Type 3 LSAs in the area.
l Filter outgoing Type 3 LSAs in the area.
Run the filter { acl-number | acl-name acl-name | ip-prefix ip-prefix-name | route-policy
route-policy-name } import command to filter outgoing Type 3 LSAs in the area.
----End
4.6.8 (Optional) Enabling the Mesh-Group Function
The mesh-group function is used to prevent repeated flooding and save system resources.
Context
When concurrent links exist between two switches, you can enable the mesh-group function to
reduce the load on the links.
S6700 Series Ethernet Switches
Configuration Guide - IP Routing 4 OSPF Configuration
Issue 01 (2012-03-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
114
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