HP HPE FlexNetwork 7500 series, Configuration Manual

Page: 445 / 592

433
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 on an ABR:
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 on the
ABR.
abr-summary ipv6-address
prefix-length [ not-advertise ] [ cost
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.
If the ASBR (ABR) is not a translator, it cannot summarize routes in Type-5 LSAs translated
from Type-7 LSAs.
To configure route summarization on an ASBR:
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. Configure route
summarization on an
ASBR.
asbr-summary
ipv6-address
prefix-length [ cost cost-value |
not-advertise | nssa-only | tag tag ] *
By default, route summarization is
not configured on an ASBR.
Configuring OSPFv3 received route filtering
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