Which of the following statements about OSPF route summarization is false?

Hi simon.waweru,

The answer is D.

The question is asking which statement is false.

With that in mind the answer is C.

In an OSPF topology it is only ABR and ASBR which can perform route sumarisation.

cheers,

Seb.

Which of the following statements regarding OSPF route summarization is false?
A . OSPF supports two route summarization modes: ABR summarization and ASBR summarization.
B . Any router in OSPF can summarize routes.
C . Route summarization is the process of summarizing routes with the same prefix into one route and then advertising only the summarized route to other areas.
D . Route summarization can reduce routing information, decrease the routing table size, and improve router performance.

Hi there,
I hate a labour a point but the answer is C. The question is asking which statement is false, ie not correct!

Point A is correct. Summarisation can only occur on ABR and ASBR's.
Point B is false. It contradicts point A.
Point C is correct. Route summarisation takes smaller component routes and advertises a prefix with a netmask large enough to encompass them all.
Point D is correct.
by having fewer smaller component routes in the routing table and
instead replacing them with fewer summary routes, the routing table will
therefore be smaller, route lookup will be faster and less router memory will
be used.

cheers,
Seb.