From: Pavel Bykov (slidersv@gmail.com)
Date: Wed Nov 12 2008 - 11:57:51 ARST
I'm not sure about peculiarities of the Lab you're talking about, BUT
1. During negotiation, PPP advertises MPPP capability, and if both sides
agree, Multilink is established, otherwise normal PPP is used. So here only
two links could establish MPPP and not the other two... But i'm not entirely
sure about functionality of this.
2. You could simply use "ip unnumbered loopbackX" on virtual-template.
Therefore the other side will always communicate to only one address.
Remember the addressing rules of PPP! You can even have an address from
different subnet on the other side, and it would work
On Wed, Nov 12, 2008 at 2:16 AM, B R <modularie@gmail.com> wrote:
> All,
>
> I'm working on an ipexpert frame relay practice lab. When you finish the
> lab
> you end up having a physical interface with 4 DLCIs under it. All 4 DLCIs
> point to the same Virtual-Template. The first two DLCIs point to 2
> different
> locations and the other two DLCIs point to a third location. (So the other
> two DLCI's point to the same location.) One of the requirements is that
> "only one /32 route to R2 should be seen on R6". To do this the lab has you
> set "ppp multilink" under the virtual-template interface.
>
>
>
> interface Serial0/1/0
>
> encapsulation frame-relay
>
> frame-relay interface-dlci 214 ppp Virtual-Template1 <-location #1
>
> frame-relay interface-dlci 215 ppp Virtual-Template1 <-location #2
>
> frame-relay interface-dlci 216 ppp Virtual-Template1 <-location #3
>
> frame-relay interface-dlci 226 ppp Virtual-Template1 <-location #3
>
>
>
> interface Virtual-Template1
>
> ip address 150.200.200.2 255.255.255.0
>
> ppp authentication chap
>
> ppp multilink
>
>
>
>
>
> I don't understand this.?.? Basically, all 4 DLCI's are under the virtual
> template interface. Why doesn't the router try to take all 4 DLCIs under
> the
> virtual template and bundle them together? If you had 4 physical interfaces
> under a multilink interface that had "ppp multilink" under it the router
> would try to bind all 4 interfaces together . right? How is it that the
> router knows only to bind DLCIs 216 and 226 together?
>
>
>
> Thanks,
>
> Mod .
>
>
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-- Pavel Bykov ------------------------------------------------- Stop the braindumps! http://www.stopbraindumps.com/Blogs and organic groups at http://www.ccie.net
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