Quản trị mạng Lab 10 - Frame relay

Quản trị mạng Lab 10 - Frame relay

CCNA LAB No 10 Frame Relay CONFIGURATION Lab time: 1 session

Students are recommended to read the entire lab requirement before starting The TIP session should only be used for troubleshooting For any problem concerns hardware or losing connectivity, please contact instructor

Note

All routers are connected to the Frame-relay cloud through their S0 interfaces

DLCI is assigned based on the virtual circuits that connect the routers

VC connects R4 and R5 will be seen as 405 from R4 and 504 from R5

Task 1:

1 xây dựng một mạng frame-relay full mesh giữa các router – các kết nối sử dụng cổng vật lý (tức là chưa chia sub-interface)

Router(config)#interface s0 Router(config-if)#no shut Router(config-if)#encapsulation frame-relay

Router(config-if)#ip address 192.168.100.x 255.255.255.0 (x : the number of router)

2 Enable inverse-arp (default)

3 Test mapping using show frame-relay map

4 Test the status of each PVC usingshow frame-relay pvc

5 Test the IP connectivity between routers usingpingcommand

Task 2 :

1 Delete full-mesh configuration from task 1  shut cổng, sau đó bật lại

2 Divide routers into two groups:group1 includes R1, 2, 3, 4; group2 includes R5, 6, 7, 8

3 Disable Inverse-ARP using no frame-relay inverse-arp command  vào cổng vật lý và

gõ lệnh

Router(config)#interface s0 Router(config-if)# no frame-relay inverse-arp

4 Each router has two virtual circuits to two neighbors Use subinterface point-to-point to make connections between routers Use a separate subnet for each virtual circuit

Router(config)# int s0.1 point-to-point

Router(config-if)#ip add 192.168.xy.x 255.255.255.0

x : the number of your router

y : the number of yourneighbor router Router(config-if)#frame-relay interface-dlci x0y

5 Enable a routing protocol that supports VLSM so that routers can ping to the opposite router  như vậy ở đây ta có 4 miền broadcast nối với nhau  cần có một giao thức định tuyến vì các mạng này ở dạng point-to-point nên chỉ cần 2 địa chỉ / dải mạng – đó là lý do sử dụng giao thức định tuyến VLSM

Router(config)# router ospf 1

Router(config)# network 192.168.xy.0 0.0.0.255 area 0

You can use one of the routing which you learned

Task 3 :

1 Delete hub-and-spoke configuration from task 2

2 Remain the same group as Task 2

3 Disable Inverse-ARP.

Router(config-if)#no frame-relay inverse-arp

4 You decide to use subinterface point-to-multipoint with this topology to reserve IP

address The IP subnet is 192.168.100.0 /24

5 Tip: create a subinterface point-to-multipoint and configure map between remote IP

address and local DLCI by using frame-relay map command

Router(config)#int s0

Router(config-if)#ip address 192.168.100.x 255.255.255.0

If router x has PVC to router y , issue the command :

Router(config-if)#Frame-relay map ip 192.168.100.y x0y

If router x has no PVC to router y , we will map to remote router via neighbor router

Exp : Router 1 to router 2 but has no PVC , so router 1 will reach to router 2 via router 3 ( using PVC between router 1 and router 3 )

Router3(config-if)#frame-relay map ip 192.168.100.2 302 broadcast Router3(config-if)#frame-relay map ip 192.168.100.1 301 broadcast Router2(config-if)#frame-relay map ip 192.168.100.3 203 broadcast

Router1(config-if)#frame-relay map ip 192.168.100.3 103 broadcast

Router1(config-if)#frame-relay map ip 192.168.100.2 103 broadcast

6 Test the IP connectivity between routers using ping command.

Chú ý:

1 – các cổng sub interface point-to-point / multipoint không thể xóa đi

được – khi ta reload thì chúng tự động bị xóa Nếu không muốn reload, ta

có thể sử dụng cổng khác để làm.

2 – Đối với mô hình trong Task 3: có 2 router để ở dạng multipoint và 2 router ở dạng point-to-point

Đối với các router multipoint: cần vào subinterface multipoint và dùng lệnh frame-relay map để map tới các router khác

Đối với các router point-to-point: cần vào subinterface point-to-point và dùng lệnh frame-relay interface dlci để gắn tĩnh dlci cho subinterface đó.

End of lab 10