At 09:36 PM 11/14/00, Ibrahim wrote:
>thanks for your response.
>But if some router down, the nearest one will send message to DR & BDR, and
>DR will send multicast message (it won't be excessive) to its networks.
I agree it wouldn't be excessive. Within a LAN, the DR mechanism keeps
adjancies and LSA propagation from getting excessive. Between areas, the
number of LSAs would depend on summarization. So without more information
on the network topology, addressing, and configuration, we couldn't even
say when LSAs would be a problem.
Besides, as I look more closely at the answer, I see that it says,
"excessive link-state entries in the link-state table." What's a link-state
table? I think the test writer put a few good-sounding words together to
throw you off.
Conclusion: D is wrong.
This is the kind of thinking you should do to pass Cisco tests! &;-)
Priscilla
>thanks,
>Ibrahim
>
> >
> > IMHO, B is the best answer as link failures in the area will cause
> > recalculations.
> >
> > D is a possible answer; however, "excessive" is a subjective word: OSPF
> > will generate the number of LSAs necessary to build its tables and the
> > picture of the network: it will not go beyond the number needed to do so.
> > On the other hand, as a human, I may find a large number of LSAs
> > "excessive".
> >
> > HTH,
> >
> > Charles
> >
> > D is kind of subjective, but it
> > ""Ibrahim"" <[EMAIL PROTECTED]> wrote in message
> > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > >
> > >
> > > doesn't help. I tried before. I also opened the CCIE : TCP/IP routing
> > book,
> > > ACRC book .. but can't found the answer.
> > >
> > >
> > > Ibam
> > >
> > > >
> > > > Try this
> > > > http://www.cisco.com/public/pubsearch.html
> > > >
> > > > ----- Original Message -----
> > > > From: "Ibrahim" <[EMAIL PROTECTED]>
> > > > To: <[EMAIL PROTECTED]>
> > > > Sent: Tuesday, November 14, 2000 11:52 PM
> > > > Subject: Single area with large number networks.
> > > >
> > > >
> > > > >
> > > > > Hi, this question is really confuse me :
> > > > > What are two possible problems that can occur when a single
> > OSPF area
> > > > > includes a large number of networks?
> > > > > a. more reachable errors
> > > > > b. frequent routing table recalculation
> > > > > c. frequent adjacencies table recalculation
> > > > > d. excessive link- state entries in the link- state table
> > > > > The frequent routing table recalculation is true, but what
> > > > about the other
> > > > > one ?
> > > > >
> > > > > thanks,
> > > > > Ibrahim
> > > > >
> > > > >
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