E0 192.168.1.1/24

LAN - 192.168.1.0/24 LAN – 172.16.0.0/16

10.0.0.1/8S0

S110.0.0.2/8

Head Office Branch Office

E0 172.16.0.1/16

Routing

• Routing is the process of moving packets from one

network to another network.

• Routing involves two basic activities:

– Determining best paths.

– Forwarding Packets through these paths.

Rules of Routing

• Head Office Ethernet interface should be in the

same network as your Head office LAN and similarly

on Branch Office side. Show Diagram

• Head Office S0 and Branch Office S1 should be in same

network. Show Diagram

• Head Office LAN and Branch Office LAN should be in

different Network. Show Diagram

• All interfaces of Router should be in different network.

Show Diagram

Types of Routing

• Static Routing

• Default Routing

• Dynamic Routing

Static Routing

• It is configured manually by Administrator.

• It is Secure & fast.

• Require Destination Network ID for configuration

• Used in Small Networks

• Administrative distance for Static Route is 0 and 1.

{Administrative Distance (AD) is the “trustworthiness” of

the routing information. AD range is 0-255, lesser the

Administrative distance, higher the priority}

Static Routing Network Diagram

E0 192.168.1.1/24

LAN - 192.168.1.0/24 LAN – 172.16.0.0/16

10.0.0.1/8S0

S110.0.0.2/8

E0 172.16.0.1/16

Head Office Branch Office

Routing Network Diagram

E0 192.168.1.1/24

LAN - 192.168.1.0/24

10.0.0.1/8S0

S110.0.0.2/8

Head Office Branch Office

LAN – 172.16.0.0/16

E0 172.16.0.1/16

Routing Network Diagram

E0 192.168.1.1/24

LAN - 192.168.1.0/24

10.0.0.1/8S0

S110.0.0.2/8

Head Office Branch Office

LAN – 172.16.0.0/16

E0 172.16.0.1/16

Routing Network Diagram

E0 192.168.1.1/24

LAN - 192.168.1.0/24

10.0.0.1/8S0

S110.0.0.2/8

Head Office Branch Office

LAN – 172.16.0.0/16

E0 172.16.0.1/16

Routing Network Diagram

E0 192.168.1.1/24

LAN - 192.168.1.0/24

10.0.0.1/8S0

S110.0.0.2/8

11.0.0.1/8S0

Head Office Branch Office

LAN – 172.16.0.0/16

E0 172.16.0.1/16

Routing Network Diagram

E0 192.168.1.1/24

LAN - 192.168.1.0/24

10.0.0.1/8S0

S110.0.0.2/8

Head Office Branch Office

LAN – 172.16.0.0/16

E0 172.16.0.1/16

exitexit

Chennai(config-if)#Chennai(config)#

telnet 192.168.1.1

================================Welcome to Chennai Router================================User Access Verificationpassword :****

****enable

configure terminal

interface serial 0ip address 10.0.0.1 255.0.0.0no shutclockrate 64000encapsulation hdlc

Chennai>password :Chennai#Enter configuration commands, one per line. End with CNTL/Z.Chennai(config)#Chennai(config-if)#Chennai(config-if)#Chennai(config-if)#Chennai(config-if)#

Microsoft Windows 2000 [Version 5.00.2195](C) Copyright 1985-2000 Microsoft Corp.C:\>Connecting .....

Chennai# Diagram

show ip routeChennai#Default gateway is not set

Host Gateway Last Use Total Uses InterfaceICMP redirect cache is emptyChennai#

show ip routeChennai#

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

Gateway of last resort is not set

C 192.168.1.0/24 is directly connected, Ethernet0C 10.0.0.0/8 is directly connected, Serial0Chennai#

configure terminalEnter configuration commands, one per line. End with CNTL/Z.Chennai(config)# ip routingChennai(config)# ^Z

Enabling RoutingRouter(config)#ip routing

Enabling RoutingRouter(config)#ip routing

Diagram

Chennai#

show ip routeChennai#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,*- candidate default U - per-user static route, o - ODR

Gateway of last resort is not set

C 192.168.1.0/24 is directly connected, Ethernet0S 172.16.0.0/16 [1/0] via 10.0.0.2C 10.0.0.0/8 is directly connected, Serial0Chennai#

Enter configuration commands, one per line. End with CNTL/Z.Chennai(config)# ip route 172.16.0.0 255.255.0.0 10.0.0.2 Chennai(config)# ^Z

configure terminal

S – for Static Routing S – for Static Routing 1 is nothing but Administrative Distance

1 is nothing but Administrative Distance

Configuring Static Route Router(config)# ip route <Destination Network ID>

<Destination Subnet Mask> <Next-hop IP address >

OrRouter(config)# ip route <Destination Network ID>

<Destination Subnet Mask> <Exit interface type><interface number>

Configuring Static Route Router(config)# ip route <Destination Network ID>

<Destination Subnet Mask> <Next-hop IP address >

OrRouter(config)# ip route <Destination Network ID>

<Destination Subnet Mask> <Exit interface type><interface number>

Diagram

exitHyderabad1(config)#Hyderabad1#

================================Welcome to Hyderabad1 Router================================User Access Verificationpassword :****

****enable

configure terminal

ip address 10.0.0.2 255.0.0.0no shutencapsulation hdlcexit

Hyderabad1>password :Hyderabad1#Enter configuration commands, one per line. End with CNTL/Z.Hyderabad1(config)#Hyderabad1(config-if)#Hyderabad1(config-if)#Hyderabad1(config-if)#Hyderabad1(config-if)#

Microsoft Windows 2000 [Version 5.00.2195](C) Copyright 1985-2000 Microsoft Corp.C:\>Connecting .....

Hyderabad1#

telnet 172.16.0.1

interface serial 1

Diagram

Chennai#

show ip routeChennai#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,*- candidate default U - per-user static route, o - ODR

Gateway of last resort is not set

C 192.168.1.0/24 is directly connected, Ethernet0S 172.16.0.0/16 [1/0] via 10.0.0.2C 10.0.0.0/8 is directly connected, Serial0Chennai#

Enter configuration commands, one per line. End with CNTL/Z.Chennai(config)# ip route 172.16.0.0 255.255.0.0 10.0.0.2 Chennai(config)# ^Z

configure terminal

ping 172.16.0.10Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:

Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 msChennai#

!!!!!

Diagram

Hyderabad1#

show ip routeHyderabad1#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,*- candidate default U - per-user static route, o - ODR

Gateway of last resort is not set

C 172.16.0.0/16 is directly connected, Ethernet0S 192.168.1.0 is directly connected, Serial1C 10.0.0.0/8 is directly connected, Serial1Hyderabad1#

Enter configuration commands, one per line. End with CNTL/Z.Hyderabad1(config)# ip route 192.168.1.0 255.255.255.0 S1Hyderabad1(config)# ^Z

configure terminal

ping 192.168.1.1Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:

Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 msHyderabad1#

!!!!!

Diagram