Configuring ospfv3 route control, Configuration prerequisites, Configuring ospfv3 route summarization – H3C Technologies H3C S5560 Series Switches User Manual

Page 386: Configuring route summarization on an abr, Configuring route summarization on an asbr

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Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter interface view.

interface interface-type
interface-number

N/A

3.

Specify an NBMA or P2MP

(unicast) neighbor and its DR
priority.

ospfv3 peer ipv6-address [ cost
value | dr-priority dr-priority ]

[ instance instance-id ]

By default, no link-local
address is specified for the

neighbor interface.

Configuring OSPFv3 route control

Configuration prerequisites

Before you configure OSPFv3 route control, complete the following tasks:

Configure IPv6 addresses for interfaces to ensure IPv6 connectivity between neighboring nodes.

Enable OSPFv3.

Configuring OSPFv3 route summarization

Route summarization enables an ABR or ASBR to summarize contiguous networks into a single network

and advertise it to other areas.

Configuring route summarization on an ABR

If contiguous network segments exist in an area, you can summarize them into one network segment on

the ABR. The ABR will advertise only the summary route. Any LSA on the specified network segment will

not be advertised, reducing the LSDB size in other areas.
To configure route summarization:

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter OSPFv3 view.

ospfv3 [ process-id | vpn-instance
vpn-instance-name ] *

N/A

3.

Enter OSPFv3 area view. area area-id

N/A

4.

Configure route

summarization.

abr-summary ipv6-address prefix-length
[ not-advertise ] [ cost value ]

By default, route summarization is
not configured on an ABR.

Configuring route summarization on an ASBR

Perform this task to enable an ASBR to summarize external routes within the specified address range into

a single route.
An ASBR can summarize routes in the following LSAs:

Type-5 LSAs.

Type-7 LSAs in an NSSA area.

Type-5 LSAs translated by the ASBR (also an ABR) from Type-7 LSAs in an NSSA area.

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