From: Niche (jackyliu419@gmail.com)
Date: Fri Sep 23 2005 - 13:22:33 GMT-3
Hi,
Ah yes, that's true, I should enlarge my mind to think of more possible
solution. A loopback interface will be a good candidate if the question do
not mention which area you should put it in.
Thanks for the enlightment =)
Cheer~
Jacky
On 9/24/05, chrlewis@cisco.com <chrlewis@cisco.com> wrote:
>
> Well it depends, if there is an up interface that is not assigned to area
> 2 on R1, why can't you put it in area0 and unnumber to that? It all depends
> on the restrictions of the question. The exam will push you to think like
> this and weirder.
> Chris
>
> ------------------------------
> *From:* Niche [mailto:jackyliu419@gmail.com]
> *Sent:* Friday, September 23, 2005 11:03 AM
> *To:* Chris Lewis [chrlewis@cisco.com]
> *Cc:* Jian Gu; Imal kalutotage; Cisco certification
> *Subject:* Re: Re- OSPF virtual link
>
> Hi,
>
> Let's take Imal's question as an example,
>
> Yes, you can use the R3's FR interface for that side of ip unnumbered, but
> how about the R1 side? No interface is at area 0 under the ospf process.
> Create new subnet is because you need to configure that new subnet under
> ospf process as area 0 in order to provide the simulation like VL to extend
> the area 0 so area 2 has a touch of area 0 in this case..
>
> Just want to clarify, may be my concept still wrong?
>
> Cheer~
> Jacky
>
> On 9/23/05, chrlewis@cisco.com <chrlewis@cisco.com> wrote:
> >
> > Why would you need to advertize an extra network? Ip unnumbered works.
> >
> > Chris
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto: nobody@groupstudy.com] On Behalf Of
> > Jian Gu
> > Sent: Friday, September 23, 2005 10:24 AM
> > To: Imal kalutotage
> > Cc: Cisco certification
> > Subject: Re: Re- OSPF virtual link
> >
> > GRE tunnel will always work but you will need to advertise extra network
> >
> > which might not be allowed in the real lab.
> >
> > On 9/23/05, Imal kalutotage <imal.kalutotage@gmail.com> wrote:
> > >
> > > Hi Group,
> > > I also have a similar question..
> > >
> > > If we have a senario like this
> > >
> > > -----------FR ---R3--eth----Cat3550----eth-----R1--------
> > > Area 0 area 1 area2
> > >
> > > R3 is the ABR which connects to the area 0 & area 1.
> > > R1 is the ABR which connects to the area 1 & area 2
> > >
> > > Cat 3350 both svi interfaces are in area 1.
> > >
> > > So we need to create a virtual link or tunnel to connect the area 2 to
> >
> > > the backbone area.
> > >
> > > In this case whcih method is prefered? Tunnel or the Virtual-link
> > >
> > >
> > > Cheers,
> > > Imal
> > >
> > >
> > > On 9/23/05, Jian Gu <guxiaojian@gmail.com > wrote:
> > > >
> > > > Meant to say that two ABRs have to have direct L2 connection,
> > > > otherwise OSPF packets would have been comsumed by transit routers.
> > > >
> > > > On 9/23/05, Jian Gu < guxiaojian@gmail.com > wrote:
> > > > >
> > > > > Hi, all,
> > > > >
> > > > > Quick question, an OSPF virtual link has to be established between
> >
> >
> > > > > two ABRs, do the two ABRs have to have a direct L2 connection?
> > > > > (direct L2 connection meaning on one Ethernet segement, physical
> > > > > serial link or
> > > > have a
> > > > > frame-relay P2P broadcast PVC). I would say no, because all
> > > > > multicast OSPF packets would be consumed by transit routers.
> > > > > Better explanation anyone?
> > > >
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