From: Scott Morris (swm@emanon.com)
Date: Fri Sep 30 2005 - 10:32:00 GMT-3
Why would Type 7's not be considered external?
Per RFC 1587:
"Type-7 LSAs provide for carrying external route information within an
NSSA. Type-7 AS External LSAs have virtually the same syntax as the
Type-5 AS External LSAs with the obvious exception of the link-state
type (see section 3.2 for more details). "
Sounds like an external LSA to me.
Scott
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Niche
Sent: Friday, September 30, 2005 9:00 AM
To: mani poopal
Cc: Scott Morris; micsoniu@telus.net; ccielab@groupstudy.com
Subject: Re: OSPF STUB or NSSA ???
Hi,
I thought L7 LSA is not being considered as external LSA? L7 LSA is N2 and
External is E2 (without reset with metric-type).
But surely, I will go for proctor to clarify what is the question request
for in order to ensure that I get the points.
Cheers~
Jacky
On 9/30/05, mani poopal <mani_ccie@yahoo.com> wrote:
>
> Hi Narcis,
>
> May be wording might say inter-area, intra-area and external. If
> interarea means type 5 LSA, external means type 7 LSA.
> PS:Be care full when the router is directley connted to another
> routing protocol, in that case even if you put area xxx nssa, you will
> not see type5 LSA BUT will see type 7 LSA. The solution is
> no-redistribution keywork with area xxx nssa statement. My 2 cents.
>
>
> Mani
>
> --- Scott Morris <swm@emanon.com> wrote:
>
> > Well... You have multiple options for this... But I'd say it would
> > depend on the rest of your layout!
> >
> > You can figure things like this out from reading the entire exam and
> > looking closely at the diagram(s) while you do it! Both stub and
> > nssa will filter out Type 5 LSAs (external routes). However, NSSA
> > allows type 7 (also external). Sooooo... Your diagram, or any
> > further requirements about "redistribute eigrp into area X" will
> > really answer that question for you.
> >
> > Cheers,
> >
> > Scott
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com
> > [mailto:nobody@groupstudy.com] On Behalf Of micsoniu@telus.net
> > Sent: Thursday, September 29, 2005 2:59 PM
> > To: ccielab@groupstudy.com
> > Subject: OSPF STUB or NSSA ???
> >
> > Hi,
> >
> > I have a problem understanding the following
> > statement:
> >
> > "Do not allow external networks into area X"
> >
> > How do I know that this is reffering to Type 5 LSAa or Type 7 LSAs ?
> >
> > Much appreciated !
> >
> > Narcis
> >
> >
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