R3166-R3206-HP High-End Firewalls Network Management Configuration Guide-6PW101

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To do… Use the command… Remarks
Enter OSPF view
ospf [ process-id | router-id router-id |
vpn-instance instance-name ] *
—
Enter OSPF area view area area-id
—
Configure ABR route
summarization
abr-summary ip-address { mask |
mask-length } [ advertise | not-advertise ]
[ cost cost ]
Required
The command is available on an
ABR only.
Not configured by default.
2. Configuring route summarization when redistributing routes into OSPF on an ASBR
Without route summarization, an ASBR advertises each redistributed route in a separate ASE LSA. After
a summary route is configured, the ASBR advertises only the summary route in an ASE LSA instead of
more specific routes, reducing the number of LSAs in the LSDB.
The ASBR summarizes redistributed Type-5 LSAs that fall into the specified address range. If the ASBR is
in an NSSA area, it also summarizes Type-7 LSAs that fall into the specified address range. If the ASBR
is also the ABR, it summarizes Type-5 LSAs translated from Type-7 LSAs.
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 |
vpn-instance instance-name ]*
—
Configure ASBR route
summarization
asbr-summary ip-address { mask |
mask-length } [ tag tag | not-advertise |
cost cost ] *
Required
The command is available on an
ASBR only.
Not configured by default.
Configuring OSPF inbound route filtering
NOTE:
For more information about route policy, see the chapter “Policy-based routing configuration.”
OSPF calculates routes by using LSAs. The calculated routes can be filtered and only permitted routes are
installed into the OSPF routing table.
OSPF provides the following filtering methods:
• Filters routing information by destination address through ACLs and IP address prefixes.
• Filters routing information by next hop through the filtering criteria configured with the gateway
keyword.
• Filters routing information by destination address through ACLs and IP address prefixes and by next
hop through the filtering criteria configured with the gateway keyword.
• Filters routing information by route policies specified by the route-policy keyword.
Follow these steps to configure inbound route filtering: