R3721-F3210-F3171-HP High-End Firewalls Network Management Configuration Guide-6PW101

383
Ste
p
Command Remarks
2. Enter OSPF view.
ospf [ process-id | router-id router-id
| vpn-instance vpn-instance-name ] *
N/A
3. Enter OSPF area view. area area-id N/A
4. Configure ABR route
summarization.
abr-summary ip-address { mask |
mask-length } [ advertise |
not-advertise ] [ cost cost ]
Not configured by default.
The command is available on
an ABR only.
• Configure 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.
To configure route summarization when redistributing routes into OSPF on an ASBR:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter OSPF view.
ospf [ process-id | router-id router-id
| vpn-instance vpn-instance-name ]*
N/A
3. Configure ASBR route
summarization.
asbr-summary ip-address { mask |
mask-length } [ tag tag |
not-advertise | cost cost ] *
The command is available on
an ASBR only.
Not configured by default.
• Configure OSPF inbound route filtering
NOTE:
For more information about IP prefix list and routing policy, see "Configuring routing policies."
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 routing policy specified by the route-policy
keyword.
To configure inbound route filtering:
Ste
p
Command Remarks
1. Enter system view. system-view N/A
2. Enter OSPF view.
ospf [ process-id | router-id router-id
| vpn-instance vpn-instance-name ] *
N/A