Hi, group.
Please clarify this description by Doyle regarding stub
and totally stubby areas. As indicated on page 480...
ABRs at the edge of a stub area will use Network Summary
LSAs [i.e. Type 3?] to advertise a single default route
(destination 0.0.0.0) into the area.
Then on page 482
Yes that wording, when directly compared, is a little confusing. But you
have the right understanding. Stub areas only summarize the AS external
routes, leaving all of the IA routes in tact. Totally stubby areas get only
one outside route - whether IA or AS external - 0.0.0.0.
Put
to the nearest ABR.
I hope this helps,
- Tom
On Tue, 05 Feb 2002 12:29:31 -0500, Cebuano wrote:
Hi, group.
Please clarify this description by Doyle regarding stub and totally
stubby areas. As indicated on page 480... ABRs at the edge of a stub
area will use Network Summary LSAs [i.e. Type 3
in totally stubby mode. Because as we all know, with stub the
E-bit is set to 1.
Thanks for the replies.
Elmer
- Original Message -
From: s vermill
To:
Sent: Tuesday, February 05, 2002 12:41 PM
Subject: RE: Doyle on Stub and Totally Stubby areas [7:34478]
Yes that wording, when directly
is set to 1.
Thanks for the replies.
Elmer
- Original Message -
From: s vermill
To:
Sent: Tuesday, February 05, 2002 12:41 PM Subject: RE: Doyle on Stub and
Totally Stubby areas [7:34478]
Yes that wording, when directly compared, is a little confusing. But
you have the right
and
Totally Stubby areas [7:34478]
Sent
by:
nobody
nd Switching exam tests your ability to apply
configuration knowledge and skill to new situations. It is not a design
test, or a test of "best pratices" for use in the field."
Just FYI for others preparing for the lab. Hope this helps...Thanks and
aloha, Frank
Bob Hunter wrote:
Can someone perhaps help educate me here. I have now seen this on a couple
of posts, did a bit of reading, and have learned that stub and totally
stubby areas are not necessarily limited to a single ingress/egress point.
I.e. can have more than one ABR.
Area0---Area1 area 1 is a stub area
Raul, thanks for your reply,
"Routing to the outside world could take a sub-optimal path in reaching the
destination by going out of the area via an
exit point which is farther to the destination than other exit points"
Does this mean that cost metrics do not come into play within stub areas?
a bit of reading, and have learned that stub and totally
stubby areas are not necessarily limited to a single ingress/egress point.
I.e. can have more than one ABR.
Area0---Area1 area 1 is a stub area ( or totally stubby, depending
upon the LSA, summarization, and default route handling
a external prefix.
Pete
*** REPLY SEPARATOR ***
On 12/11/2000 at 1:08 AM Chuck Larrieu wrote:
Can someone perhaps help educate me here. I have now seen this on a couple
of posts, did a bit of reading, and have learned that stub and totally
stubby areas are not necessarily limited
Hi,
I'm confused on the subject of totally stubby areas, and the command "area
default-cost". From what I'm reading, one of the qualifications of a totally
stubby area is that if multiple exits (ABRs) exist, routing to outside the
area does not have to take an optimal path. Does
lly Stubby Areas and area default-cost
Hi,
I'm confused on the subject of totally stubby areas, and the command
"area
default-cost". From what I'm reading, one of the qualifications of a
totally
stubby area is that if multiple exits (ABRs) exist, routing to outside the
area d
simply
allows you to set a cost for the route instead of using the standard OSPF metric to
the ABR itself.
Hope this helps some
Pete
*** REPLY SEPARATOR ***
On 11/08/2000 at 4:29 PM Bob Hunter wrote:
Hi,
I'm confused on the subject of totally stubby areas, and the command
I think it is not possible, because the TSA (Totaly Stub Area) is Cisco
proprietary and therefore can't be use on another vendor.
- Original Message -
From: "Omer" [EMAIL PROTECTED]
To: "Cisco Groupstudy" [EMAIL PROTECTED]
Sent: Monday, July 17, 2000 1:42 AM
Sub
I think it is not possible because the Totally Stub Area is available
only on Cisco Routers (Cisco Proprietary).
- Original Message -
From: "Omer" [EMAIL PROTECTED]
To: "Cisco Groupstudy" [EMAIL PROTECTED]
Sent: Monday, July 17, 2000 1:42 AM
Subject: Totally
Yes, you can have non-Cisco routers within the totally-stubby area, as long
as the ABRs are Cisco. The routers within the totally-stubby area are
completely unaware of the fact that they are missing those type 3 LSAs from
the other areas--they just think they are in an RFC-compliant stub
Hello,
Suppose that I have an OSPF area that contains some
non-Cisco routers, Can I still configure it as totally
stuby area?
Thanks
Omer
No, totally stubby is Cisco only.
*** please send Cisco Study Group questions to the list, so everyone
can benefit -- not directly to me ***
Howard C.
I think it is not possible, because the TSA (Totaly Stub Area) is Cisco
proprietary and therefore can't be use on another vendor.
- Original Message -
From: "Omer" [EMAIL PROTECTED]
To: "Cisco Groupstudy" [EMAIL PROTECTED]
Sent: Monday, July 17, 2000 1:42 AM
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