Preparing for your BSCI exam on your way to the Cisco CCNP
certification, you can quickly get overwhelmed by the details!
Here are five commonly overlooked points you should keep in
mind when it comes to your OSPF studies.
The virtual link command includes the area number of the
transit area, and if authentication is being used on Area
0, the virtual link command must include the authentication
statement. Since the virtual link is a logical extension of
Area 0, it stands to reason that it has to be configured with
the authentication type and password configured on Area 0.
OSPF requires no seed metric when routes are being redistributed
into an OSPF domain. The default cost for such routes is 20,
but you do need to use the "subnets" option if you
want to redistribute subnets into OSPF.
There are two kinds of external OSPF routes. The default,
E2, reflects the cost of the path from the ASBR to the external
destination. The other option, E1, has a cost reflecting the
entire path from the local router to the external destination.
When configuring stub areas, each router in the area must
agree that the area is stub. For a total stub area, only the
ABR needs to be configured with the "no-summary"
option, but all routers in the area still must agree that
the area is stub.
Routers in a stub area will have a default route to use to
reach external destinations; routers in total stub areas will
have a default route to use in order to reach both external
and inter-area networks.
The BSCI exam and CCNP certification require a great deal
of dedication and hard work. Keep studying and paying attention
to the details, and you will get there!
About the Author:
Chris Bryant, CCIE #12933, is the owner of The Bryant Advantage,
home of free CCNP and CCNA tutorials, The Ultimate CCNA Study
Package, and Ultimate CCNP Study Packages. For a FREE copy
of his latest e-books, “How To Pass The CCNA” and
“How To Pass The CCNP”, just visit the website!
You can also get FREE CCNA and CCNP exam questions every day!
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