This tutorial is all about how to configure static routing using serial port.This is an example lab showing static routing  configuration in cisco packet tracer.Below topology have total 9 network.I have mentioned step wise notes to provide static routing configuration.

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First of all assign ip address on each interface of router as mentioned in topology diagram.Here i assume that you already know how to assign ip address on router.

Static routing Configuration on ROUTER0:

middlerout(config)#ip route 1.0.0.0 255.0.0.0 2.0.0.2
middlerout(config)#ip route 9.0.0.0 255.0.0.0 7.0.0.2
middlerout(config)#ip route 8.0.0.0 255.0.0.0 7.0.0.2
middlerout(config)#ip route 5.0.0.0 255.0.0.0 6.0.0.2
middlerout(config)#ip route 3.0.0.0 255.0.0.0 4.0.0.2

Static routing configuration on ROUTE 1:

1router(config)#ip route 9.0.0.0 255.0.0.0 7.0.0.2
1router(config)#ip route 7.0.0.0 255.0.0.0 4.0.0.1
1router(config)#ip route 8.0.0.0 255.0.0.0 7.0.0.2
1router(config)#ip route 7.0.0.0 255.0.0.0 4.0.0.1
1router(config)#ip route 1.0.0.0 255.0.0.0 2.0.0.2
1router(config)#ip route 2.0.0.0 255.0.0.0 4.0.0.1
1router(config)#ip route 5.0.0.0 255.0.0.0 6.0.0.2
1router(config)#ip route 6.0.0.0 255.0.0.0 4.0.0.1

Static Routing configuration on ROUTER 2:

Router(config)#ip route 9.0.0.0 255.0.0.0 7.0.0.2
Router(config)#ip route 7.0.0.0 255.0.0.0 2.0.0.1
Router(config)#ip route 8.0.0.0 255.0.0.0 7.0.0.2
Router(config)#ip route 7.0.0.0 255.0.0.0 2.0.0.1
Router(config)#ip route 5.0.0.0 255.0.0.0 6.0.0.2
Router(config)#ip route 6.0.0.0 255.0.0.0 2.0.0.1
Router(config)#ip route 3.0.0.0 255.0.0.0 4.0.0.2
Router(config)#ip route 4.0.0.0 255.0.0.0 2.0.0.1
Router(config)#

Static routing configuration on ROUTER 3:

Router(config)#ip route 1.0.0.0 255.0.0.0 2.0.0.2
Router(config)#ip route 2.0.0.0 255.0.0.0 6.0.0.1
Router(config)#ip route 3.0.0.0 255.0.0.0 4.0.0.2
Router(config)#ip route 4.0.0.0 255.0.0.0 6.0.0.1
Router(config)#ip route 8.0.0.0 255.0.0.0 6.0.0.2
Router(config)#ip route 8.0.0.0 255.0.0.0 7.0.0.2
Router(config)#ip routr 7.0.0.0 255.0.0.0 6.0.0.1
Router(config)#ip route 7.0.0.0 255.0.0.0 6.0.0.1
Router(config)#ip route 9.0.0.0 255.0.0.0 7.0.0.2
Router(config)#ip route 7.0.0.0 255.0.0.0 6.0.0.1
Router(config)#

Static routing configuration on ROUTER 4:

4router(config)#ip route 1.0.0.0 255.0.0.0 2.0.0.2
4router(config)#ip route 2.0.0.0 255.0.0.0 7.0.0.1
4router(config)#ip route 5.0.0.0 255.0.0.0 6.0.0.2
4router(config)#ip route 6.0.0.0 255.0.0.0 7.0.0.1
4router(config)#ip route 3.0.0.0 255.0.0.0 4.0.0.2
4router(config)#ip route 4.0.0.0 255.0.0.0 7.0.0.1



Now i am going to check routing table on middle router:

middlerout#show ip route

Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP

i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area

* - candidate default, U - per-user static route, o - ODR

P - periodic downloaded static route

Gateway of last resort is not set

S 1.0.0.0/8 [1/0] via 2.0.0.2

C 2.0.0.0/8 is directly connected, Serial0/1/1

S 3.0.0.0/8 [1/0] via 4.0.0.2

C 4.0.0.0/8 is directly connected, Serial0/0/1

S 5.0.0.0/8 [1/0] via 6.0.0.2

C 6.0.0.0/8 is directly connected, Serial0/0/0

C 7.0.0.0/8 is directly connected, Serial0/1/0

S 8.0.0.0/8 [1/0] via 2.0.0.2

[1/0] via 7.0.0.2

S 9.0.0.0/8 [1/0] via 2.0.0.2

[1/0] via 7.0.0.2