CCNA(Stand-ALONE)Lab 25-Frame Relay Hub-and-Spoke Topology-白红宇

Objective: Learn to configure a hub-and-spoke topology.

Lab Equipment: Router 1, Router 2, Router 3, and Router 4 from the eRouters menu

Background Reading: Lab Primer Lesson 9: Frame Relay

Your company’s corporate office is in Dallas, and its sales offices are in San Francisco, New York,and Tampa. You want to implement a hub-and-spoke topology in which all of the sales offices connect to the corporate office to send all data, including communications between sales offices.

1. First, assign the host names of Dallas, San_Francisco, New_York, and Tampa to Router 1, Router 2, Router 3, and Router 4, respectively.

Dallas:

San_Francisco:

New_York:

Tampa:

2. Now, enter interface configuration mode for the serial 0 interface on Dallas, and set the encapsulation type to Frame Relay. Be sure to enable the interface.

Dallas(config)#interface serial 0

Dallas(config-if)#encapsulation frame-relay

Dallas(config-if)#no shutdown

3. Next, create a subinterface for the connection from Dallas to the San Francisco sales office.

Dallas(config-if)#exit

Dallas(config)#interface serial 0.100 point-to-point

Dallas(config-subif)#

4. Assign the subinterface the DLCI number for the connection from Dallas to San_Francisco, and configure the subinterface with the appropriate IP address. Remember to enable the subinterface.

Dallas(config-subif)#frame-relay interface-dlci 102

Dallas(config-subif)#ip address 172.16.1.1 255.255.255.0

Dallas(config-subif)#no shutdown

5. Create a subinterface for the connection from Dallas to the sales office in New York.

Dallas(config-subif)#exit

Dallas(config)#interface serial 0.200 point-to-point

Dallas(config-subif)#

6. Add the correct DLCI for the connection from Dallas to New_York, and configure the appropriate IP address for the subinterface. Remember to enable the subinterface.

Dallas(config-subif)#frame-relay interface-dlci 103

Dallas(config-subif)#ip address 172.16.2.1 255.255.255.0

Dallas(config-subif)#no shutdown

7. Create a subinterface for the connection from Dallas to the sales office in Tampa.

Dallas(config-subif)#exit

Dallas(config)#interface serial 0.300 point-to-point

Dallas(config-subif)#

8. Add the correct DLCI for the Dallas to Tampa connection, and configure the appropriate IP address for the subinterface. Remember to enable the subinterface.

Dallas(config-subif)#frame-relay interface-dlci 104

Dallas(config-subif)#ip address 172.16.3.1 255.255.255.0

Dallas(config-subif)#no shutdown

9. Access the serial 0 interface on San_Francisco, set the encapsulation to Frame Relay,and enable the interface.

San_Francisco(config)#interface serial 0

San_Francisco(config-if)#encapsulation frame-relay

San_Francisco(config-if)#no shutdown

10. Because subinterfaces are not necessary for single connections, add the appropriate DLCI value.

San_Francisco(config-if)#frame-relay interface-dlci 201

11. Set the IP address for this interface, and enable the interface.

San_Francisco(config-if)#ip address 172.16.1.2 255.255.255.0

San_Francisco(config-if)# no shutdown

12. Access the serial 0 interface on New_York, and set the encapsulation to Frame Relay.

New_York(config)#interface serial 0

New_York(config-if)#encapsulation frame-relay

13. Add the appropriate DLCI value.

New_York(config-if)#frame-relay interface-dlci 301

14. Set the IP address for this interface, and enable the interface.

New_York(config-if)#ip address 172.16.2.2 255.255.255.0

New_York(config-if)#no shutdown

15. Access the serial 0 interface on Tampa, and set the encapsulation to Frame Relay.

Tampa(config)#interface serial 0

Tampa(config-if)#encapsulation frame-relay

16. Add the appropriate DLCI value.

Tampa(config-if)#frame-relay interface-dlci 401

17. configure the IP address for this interface, and enable the interface.

Tampa(config-if)#ip address 172.16.3.2 255.255.255.0

Tampa(config-if)#no shutdown

18. Now, all interfaces should be up and up. To confi rm this, connect to Dallas and try to ping each of the three sales offices.

Dallas(config-subif)#exit

Dallas(config)#exit

Dallas#ping 172.16.1.2

Dallas#ping 172.16.2.2

Dallas#ping 172.16.3.2

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