All interfaces on the frame relay network are in the same 10.1.x.x/16
subnet. Hence there is a connected route comming from the frame relay
interface which will be preferred over any default route or any other route.
At 10:43 AM 26/11/2000 -0600, Aaron K. Dixon wrote:
>You will need to either generate default routes for the spokes or use policy
>routing to set the default next hop.
>
>Regards,
>Aaron K. Dixon
>
>-----Original Message-----
>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
>Frank B.
>Sent: Sunday, November 26, 2000 10:27 PM
>To: James Wilson
>Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]
>Subject: Re: Frame Relay Problem
>
>
>Unless I'm mis-reading you here this is the correct behavior for a
>partial mesh. Unless you provide a full mesh you won't get dynamic
>mappings for both spokes. Also, I assume the PVC from R1 to R2 is one
>subnet and the PVC from R1 to R3 is another subnet--Frame relay and
>Inverse ARP alone can't route between them.
>
>So if you can't get a PVC between R2 and R3...then run any routing
>protocol on all 3 routers and you should be able to ping from R2 to R3
>and vice-versa (RIP will work fine to prove this point.) Hope this
>helps...and as always, comments are welcome ( and in fact expected
>;-) Frank
>
>James Wilson wrote:
> >
> > Hi All,
> >
> > I hope someone can shed some light on the problem I have come across in
>the
> > following scenario :
> >
> > Three routers, R1,R2 and R3 all connected via a Frame Relay cloud with a
> > router in the middle doing frame relay switching. The frame switch is
>_not_
> > fully meshed. R1 is acting as the hub with R2 and R3 being spokes off R1.
> > Hence there is a PVC betweenR1 and R2 and a PVC between R1 and R3. There
>is
> > _no_ PVC between R2 and R3.
> >
> > The particular lab exercise here specifies that each router much be able
>to
> > ping every other router in the frame cloud. BUT the use of the
>'frame-relay
> > map' command is forbidden, and only R1 can be configured using a
>subinterface.
> >
> > As I have it configured R1 can ping both R2 and R3 as expected. However,
> > both R2 and R3 can only ping R1 (the hub) yet cannot ping each other. The
> > question stipulates you should use routing and not Layer2 to Layer3
> > mapping. A debug on the ping from R2 to R3 shows that there is no map
>entry
> > for R3 hence encapsulation failed. A look at 'sh frame map' shows there is
> > only 1 entry and it is for R1. This sh frame map is identical on R2 and
>R3.
> >
> > So the question is, how can I get R2 and R3 to be able to ping each other
> > using routing and not the frame relay map command.
> >
> > It's got two of us here studying for our CCIE stumped, so im hoping
>someone
> > out there has an idea as to how this can be accomplished.
> >
> > Also, as this is for the CCIE, static routes are not an option.
> >
> > Cheers.
> >
> > Jim.
> >
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