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713 Views 2 Replies Latest reply: Feb 6, 2012 10:00 AM by Martin RSS

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Setting Up Frame Relay Using 3 Routers

Feb 5, 2012 10:05 PM

alan 43 posts since
Aug 4, 2011

Is it possible to setup a frame relay lab using 3 routers where you can ping the interfaces on the router being used as the frame-relay switch?  For example:

 

R1 is the frame-relay switch. Int S 1/0 is connected to int S 1/0 on R2. and R1 int S 1/1 is connected to int S 1/0 on R3.  I can do a setup where R2 and R3 are the spokes with R1 being the hub. Both R2 and R3 can ping one another.

 

What I can't figure out is how to put an ip address on R1 interfaces where I can ping R2 and R3 from R1 and vice-versa. 

 

After setting up frame-relay on R1 interfaces, I enter the following information for R1

 

int S 1/0

frame-relay route 100 int s 1/1 200

int S 1/1

frame-relay route 200 int s 1/0 100

 

R2 is setup as a multipoint interface:

 

int s 1/0.2 multipoint

ip address 172.12.123.2   255.255.255.0

frame-relay map ip 172.12.123.3 100 broadcast

 

R3 is setup as a point-to-point intreface

 

int s 1/0.3 point-to-point

ip address 172.12.123.3   255.255.255.0

frame-relay interface-dlci 200 broadcast

 

What I'm missing is how to setup the interfaces on R1 so I can ping them from the other routers.  I appreciate any suggestions.

  • Martin 13,077 posts since
    Jan 16, 2009
    Currently Being Moderated
    2. Feb 6, 2012 10:00 AM (in response to alan)
    Re: Setting Up Frame Relay Using 3 Routers

    FR over Hub-spoke; There are 3 common things to check for FR to work :

     

    broadcast in frame-relay map statments;

    Split Horizon on hub;

    adding map statments on Spokes saying "to ping other spoke go thru hub"

     

    there are some examples in my docs; if u still need help or have question, show us running config(s)

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