Frame Relay Switch Method 1

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Download Lab: GNS3

Prerequisites:
 Cisco Image        (c7200-a3jk9s-mz.124-25g.image)

If you do not have this image then just use any image you possess which supports frame-relay and serial interfaces.
Create topology as shown in this lab and then proceed to configure routers.


Introduction:
This lab teaches CCNA students how to configure frame-relay switch out of the router, using frame-relay route command.


Topology:


Scenario:
Two routers in the middle of the topology are frame-relay switches connected to the clients, you need to create a bidirectional path across frame-relay cloud between two interfaces facing customer locations. DLCI 100 will be used for client sites and DLCI 50 on the link between frame-relay switches as shown in the topology.



 
Lab procedure:

Step1: Configure customer sites.

R4(config)#
interface Serial1/0
 ip address 10.0.0.1 255.255.255.252
 encapsulation frame-relay
 frame-relay intf-type dte
 frame-relay map ip 10.0.0.2 100 broadcast

R5(config)#
interface Serial1/0
 ip address 10.0.0.2 255.255.255.252
 encapsulation frame-relay
 frame-relay intf-type dte
 frame-relay map ip 10.0.0.1 100 broadcast


Step2: Enable frame-relay switching.

FRSW1(config)# frame-relay switching
!
FRSW2(config)# frame-relay switching

Step3: Configure the link between frame-relay switches.

FRSW1(config)#
interface Serial1/0
 encapsulation frame-relay
 clock rate 8064000
 frame-relay intf-type nni
 no shutdown

FRSW2(config)#
interface Serial1/0
 encapsulation frame-relay
 clock rate 8064000
 frame-relay intf-type nni
 no shutdown


Step4: Configure interfaces facing customer's routers.

FRSW1(config)#
interface Serial1/1
 encapsulation frame-relay
 clock rate 8064000
 frame-relay intf-type dce
 no shutdown

FRSW2(config)#
interface Serial1/1
 encapsulation frame-relay
 clock rate 8064000
 frame-relay intf-type dce
 no shutdown


Step5: Using the frame-relay route command create two logical paths, one to direct traffic from the customer on to the link between FR switches and the second path to accept frames from the link and route them to the clients.

FRSW1(config)#
 interface Serial1/1
 frame-relay route 100 interface Serial1/0 50
!
interface Serial1/0
frame-relay route 50 interface Serial1/1 100

Repeat this process on the second switch:

FRSW2(config)#
 interface Serial1/1
 frame-relay route 100 interface Serial1/0 50
!
interface Serial1/0
frame-relay route 50 interface Serial1/1 100


Step6: Verify frame-relay routes.

FRSW1#show  frame-relay route
Input Intf      Input Dlci      Output Intf     Output Dlci     Status
Serial1/0       50              Serial1/1       100             active
Serial1/1       100             Serial1/0       50              active

FRSW2#show  frame-relay route
Input Intf      Input Dlci      Output Intf     Output Dlci     Status
Serial1/0       50              Serial1/1       100             active
Serial1/1       100             Serial1/0       50              active


Step7: Verify frame-relay configurations on the client sites:

R4#show frame-relay map
Serial1/0 (up): ip 10.0.0.2 dlci 100(0x64,0x1840), static,
              broadcast,
              CISCO, status defined, active

R4#ping 10.0.0.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.0.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/40/48 ms