H3c-technologies H3C WX6000 Series Access Controllers Uživatelský manuál Strana 257

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z OSPF basic functions
z Corresponding filters if routing information filtering is needed.
Configuring OSPF Route Summarization
OSPF route summarization includes:
z Configuring route summarization between OSPF areas on an ABR
z Configuring route summarization when redistributing routes into OSPF on an ASBR
Follow these steps to configure route summarization between OSPF areas on an ABR:
To do… Use the command… Remarks
Enter system view
system-view
Enter OSPF view
ospf
[
process-id |
router-id
router-id ] *
Enter OSPF area view
area
area-id Required
Configure ABR route
summarization
abr-summary
ip-address { mask |
mask-length } [
advertise
|
not-advertise
] [
cost
cost ]
Required
Available on an ABR only
Not configured by default
Follow these steps to configure route summarization when redistributing routes into OSPF on an ASBR:
To do… Use the command Remarks
Enter system view
system-view
Enter OSPF view
ospf
[
process-id |
router-id
router-id ] *
Configure ASBR route
summarization
asbr-summary
ip-address { mask |
mask-length } [
tag
tag |
not-advertise
|
cost
cost ] *
Required
Available on an ASBR only
Not configured by default
Configuring OSPF Inbound Route Filtering
Follow these steps to configure inbound route filtering:
To do… Use the command… Remarks
Enter system view
system-view
Enter OSPF view
ospf
[
process-id |
router-id
router-id ] * Required
Configure inbound route
filtering
filter-policy
{ acl-number |
ip-prefix
ip-prefix-name |
gateway
ip-prefix-name }
import
Required
Not configured by default
Since OSPF is a link state-based interior gateway protocol, routing information is contained in LSAs.
However, OSPF cannot filter LSAs. Using the filter-policy import command is to filter routes
computed by OSPF, and only routes not filtered out are installed into the routing table.
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