Configuring Ospf Route Control; Configuration Prerequisites; Configuring Ospf Route Summarization - HP 6125XLG Layer 3 - Ip Routing Configuration Manual

Step
3. 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 you configure OSPF route control, complete the following tasks:
Configure IP addresses for interfaces to ensure IP connectivity between neighboring nodes.
•
• Enable OSPF.
Configure filters if routing information filtering is needed.
•

Configuring OSPF route summarization

Configure route summarization on an ABR or ASBR to summarize contiguous networks into a single
network and distribute it to other areas.
Route summarization reduces the routing information exchanged between areas and the size of routing
tables, and improves routing performance. For example, three internal networks 19.1.1.0/24,
19.1.2.0/24, and 19.1.3.0/24 are available within an area. You can summarize the three networks into
network 19.1.0.0/16, and advertise the summary network to other areas.
Configuring route summarization on an ABR
After you configure a summary route on an ABR, the ABR generates a summary LSA instead of more
specific LSAs so that the scale of LSDBs on routers in other areas and the influence of topology changes
are reduced.
To configure route summarization on an ABR:
Step
1. Enter system view.
2. Enter OSPF view.
3. Enter OSPF area view.
4. Configure ABR route
summarization.
Command
ospf network-type p2p
[ peer-address-check ]
Command
system-view
ospf [ process-id | router-id router-id
| vpn-instance vpn-instance-name ] *
area area-id
abr-summary ip-address
{ mask-length | mask } [ advertise |
not-advertise ] [ cost cost ]
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Remarks
By default, the network type of an
interface depends on the link layer
protocol.
Remarks
N/A
N/A
N/A
By default, no route summarization
is configured.
The command takes effect only on
an ABR.