Which kinds of routing aggregation does OSPF protocol have?

Created Feb 22, 2016 14:36:56Latest reply Feb 22, 2016 15:15:28 928 1 0 0

Which kinds of routing aggregation does OSPF protocol have?

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TomJ     Created Feb 22, 2016 15:15:28 Helpful(0) Helpful(0)

OSPF has two types of aggregation: the ABR aggregation and the ASBR aggregation
ABR aggregation: when the ABR send routing information to other areas, Type3 LSA will be generated. If there is continuous network segment in the region, we can use the command of “abr-summary” aggregate these segments into one segment. ABR only sends an aggregated LSA, which can reduce the scale of the other areas LSDB.
ASBR aggregation: If the local router is ASBR, one Type5 LSA with aggregated routes will be generated. And one Type7 LSA with aggregated routes will be generated in NSSA.
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