Re: Re: Frame Relay mp/p2p Questions

From: l.tosolini@chello.nl
Date: Sat May 14 2005 - 07:01:48 GMT-3


Hi kc,
I am not aware of any problem connecting p2p subif to phy interface
For p2p subif:
- you need to specify the DLCI via 'frame-relay interface-dlci 104' otherwise the DLCI are assigned automatically to the phy intf
- no need for inarp nor for map, because its treated as a phy p2p interface
For phy intf:
- as inarp is disabled you need the map

This is my config:
r1#show running-config | begin Serial0
interface Serial0
 no ip address
 encapsulation frame-relay
 no frame-relay inverse-arp
!
interface Serial0.14 point-to-point
 ip address 172.16.14.1 255.255.255.0
 frame-relay interface-dlci 104

r4#show running-config interface serial 0
interface Serial0
 ip address 172.16.14.4 255.255.255.0
 encapsulation frame-relay
 frame-relay map ip 172.16.14.1 401 broadcast
 frame-relay interface-dlci 401
 no frame-relay inverse-arp
end

My 2 cents,
Luca.

>
> van: k c <jwongccie@yahoo.com.hk>
> datum: 2005/05/14 za AM 10:22:20 CEST
> aan: Ed Lui <edwlui@gmail.com>
> cc: ccielab@groupstudy.com
> onderwerp: Re: Frame Relay mp/p2p Questions
>
> Hi Ed Lui,
>
> My question is:
> one side is p2p, the other side is physical interface. By default, physical interface cannot connect to p2p sub-interface, am I correct? Assuming "no fram inverse-arp" is used. So how to make connection between a p2p sub-interface and a physical interface.
>
> Thanks.
>
> Ed Lui <edwlui@gmail.com> <6<g:
> k c,
>
> It will look like this. Your question is ?
>
>
> --------------------------------(s0)(phy int)R4
> / 172.16.14.X
> (s0.14)ptp
> R1(s0.123)multipoint=========================(S0)(phy int)R2
> \ 172.16.123.X
> ========================(s0)(phy int)R3
>
>
> HTH,
>
> On 5/13/05, k c wrote:
> > Hi Group,
> >
> > R1 (172.16.123.1/172.16.14.1), R2 (172.16.123.2), R3 (172.16.123.3), R4 (172.16.14.4).
> > R1 is Hub, R2 & R3 are spokes within 172.16.123.0 subnet.
> > "One and only one router must configured with two and only two logical FR interfaces. The three remaining routers with FR interfaces must use physical interfaces only. The logical interfaces must be of a different type"
> >
> > Obviously, R1 will be configured with one mp (connect to R2 and R3) and one p2p connect to R4, however, R2-R4 should be physical interfaces. Any hints?
> >
> > Thanks.
> >
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