Configuring Ospf Route Control; Configuration Prerequisites; Configuring Ospf Route Summarization - HP 3600 v2 series Configuration Manual

To do...
Configure the OSPF network type
for the interface as P2P

Configuring OSPF route control

This section describes how to control the advertisement and reception of OSPF routing information, as
well as route redistribution from other protocols.

Configuration prerequisites

Before configuring OSPF route control, complete the following tasks:
Configure IP addresses for interfaces
•
Configure OSPF basic functions
•
• Configure filters if routing information filtering is needed

Configuring OSPF route summarization

Route summarization is when an ABR or ASBR summarizes routes with the same prefix into a single route
and distributes it to other areas.
Route summarization reduces the traffic of routing information exchanged between areas and the sizes
of routing tables on routers, improving route calculation speed on routers.
For example, there are three internal routes in an area: 19.1.1.0/24, 19.1.2.0/24, and 19.1.3.0/24. By
configuring route summarization on the ABR, the three routes are summarized into the route 19.1.0.0/16
that is advertised to other areas.
Configuring route summarization on an ABR
If contiguous network segments are available in the area, you can summarize them into a single network
segment. An ABR generates Type-3 LSAs on a per network segment basis for an attached non-backbone
area.
The ABR in the area distributes only the summary LSA to reduce the scale of LSDBs on routers in other
areas and the influence of topology changes.
Follow these steps to configure route summarization on an ABR:
To do...
Enter system view
Enter OSPF view
Enter OSPF area view
Configure ABR route
summarization
Use the command...
ospf network-type p2p
Use the command...
system-view
ospf [ process-id | router-id router-id
| vpn-instance vpn-instance-name ] *
area area-id
abr-summary ip-address { mask |
mask-length } [ advertise |
not-advertise ] [ cost cost ]
80
Remarks
Required
By default, the network type of an
interface depends on the link layer
protocol.
Remarks
—
—
—
Required
Not configured by default.
The command is available on an
ABR only.