Check for lines:
Virtual Link OSPF_VL0 to router 10.0.0.3 is up
Adjacency State FULL (Hello suppressed)
State is up and Adjacency State is FULL
Summarizing Subnetwork LSAs on an OSPF ABR
If you configured two or more subnetworks when you assigned your IP addresses to your interfaces, you
might want the software to summarize (aggregate) into a single LSA all of the subnetworks that the local area
advertises to another area. Such summarization would reduce the number of LSAs and thereby conserve
network resources. This summarization is known as interarea route summarization. It applies to routes from
within the autonomous system. It does not apply to external routes injected into OSPF by way of redistribution.
This task configures OSPF to summarize subnetworks into one LSA, by specifying that all subnetworks that
fall into a range are advertised together. This task is performed on an ABR only.
SUMMARY STEPS
1.
configure
2.
Do one of the following:
•
router ospf process-name
•
router ospfv3 process-name
3.
router-id { router-id }
4.
area area-id
5.
Do one of the following:
•
range ip-address mask [ advertise | not-advertise ]
•
range ipv6-prefix / prefix-length [ advertise | not-advertise ]
6.
interface type interface-path-id
7.
commit
DETAILED STEPS
PurposeCommand or Action
configure
Step 1
Enables OSPF routing for the specified routing process and places
the router in router configuration mode.
Do one of the following:
Step 2
•
router ospf process-name
or
•
router ospfv3 process-name
Enables OSPFv3 routing for the specified routing process and places
the router in router ospfv3 configuration mode.
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
452
Implementing OSPF
Summarizing Subnetwork LSAs on an OSPF ABR
To Next Page
Loading...
Need help?
General
