From: Pranab Bhowmick (pbhowmick@gmail.com)
Date: Sun Mar 12 2006 - 06:47:21 GMT-3
Hi Kemal,
Thanks for your response. I should have specified that one of the
requirements is to use only 1 frame-relay map command under the serial
interface on R1/R3. I know its kind of stupid, but thats how it is. I guess
I'm looking for a L3 solution to this.
thanks,
Pranab
On 3/12/06, Kemal Yildirim (Netron) <Kemal.Yildirim@netron.com.tr> wrote:
>
> Hi Pranab,
> I guess you missed to provide proper L3/L2 mapping on frame-relay links,
> and this is not a OSPF issue in reality.
> At spokes you need at least one L3/L2 mapping for HUB, and if you want
> reachability between spokes, you also need extra mappings for spoke to
> spoke traffic. For spoke-to-spoke mapping you don't need broadcast, I
> hope this help you.
> Regards,
> Kemal
>
> R1:
> interface Serial0/0
> encapsulation frame-relay
> ip address 123.1.123.1 255.255.255.0
> frame-relay map ip 123.1.123.2 102 broadcast ----> for HUB (R2)
> frame-relay map ip 123.1.123.3 102 ----> for R3
> no frame-relay inverse-arp
>
> R2:
> interface Serial0/0
> encapsulation frame-relay
> ip address 123.1.123.2 255.255.255.0
> frame-relay map ip 123.1.123.1 201 broadcast
> frame-relay map ip 123.1.123.3 203 broadcast
> no frame-relay inverse-arp
>
> R3:
> interface Serial0/0
> encapsulation frame-relay
> ip address 123.1.123.3 255.255.255.0
> frame-relay map ip 123.1.123.2 302 broadcast ----> for HUB (R2)
> frame-relay map ip 123.1.123.1 302 ----> for R1
> no frame-relay inverse-arp
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Pranab Bhowmick
> Sent: Sunday, March 12, 2006 10:53 AM
> To: Cisco certification
> Subject: Policy based routing in partially-meshed FR/OSPF network
>
> I have the following hub and spoke FR network:
>
> R2
> (multi-point)
> / \
> dlci 102/201 / \ dlci 302/203
> / \
> R1 R3
>
> With ospf network type configured as non-broadcast and manually
> configuring
> R2 as DR and R1/R3 as neighbors, I am able to bring the OSPF adjacencies
> up.
> I'm using a /24 subnet so R3 shows up as directly connected to R1. Now
> when
> I try to ping R3 from R1, it fails because there is no direct
> connectivity
> between R1 and R3. Other than policy-based routing (making R2 as
> next-hop),
> is there an another way of make R1 and R3 reachable to each other?
>
> Appreciate your help.
> Pranab
>
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