project on OSPF

PROJECT ONIMPLEMENTATION AND VERIFICATION OF

OSPF

MAIN PROJECT # 1

SUMMITED BY:OM PRAKASH

Routing is the act of moving information (data

packets) across an inter-network from a source node to a destination node.

Routing decisions for a packet is taken by the routers on the basis of the routing tables

Routing tables of the routers are either provided to the routers by the Network Admins or that is generated by the routers it self by using dynamic routing techniques

What is IP Routing?

IGP stands for Interior Gateway Protocols, is the

set consists of protocols could be implemented on the network owned by some Autonomous System (AS) or firm ( Privately owned)

For the transfer of packets between different ASs we require Exterior Gateway Protocols e.g. BGP

The IGPs set consists protocols like OSPF,RIP,IGRP EIGRP etc.

WHAT IS IGPs ?

The Open Shortest Path First (OSPF) protocol is

an Interior Gateway Protocol used to distribute routing information within a single Autonomous System

It is defined in Reference For Comments document (RFC 2328)

OSPF is a link-state routing protocol, which means that changes in routing are based on the status and speeds of the physical links in the networked routers, and changes are immediately propagated to every router on the network

About OSPF

It is most used IGP It has several features like:• Consists of areas and autonomous systems• Minimizes routing update traffic• Allows scalability• Supports VLSM/CIDR• Has unlimited hop count• Allows multi-vendor deployment (open

standard)

Why OSPF

Lets consider that we have to configure a

network for a medium level firm The firm consists three CISCO ROUTERS of

2600 series (with IOS v-12) which are to be configured using the OSPF v2

Sub-networks for different departments finance, marketing, sales and HR has to be created(Routers R1 and R2 )

There is also a Wi-Fi network to be configured for Wi-Fi devices (Router R3)

Problem Statement

Problem Scenario

Cisco Packet Tracer is a powerful network

simulation program, widely used for training, research and education (using v5.3.2)

As it is not feasible to use actual physical router just for experimental purposes, so we require some simulator to do the leanings in which we are primarily interested

There are benefits of using the simulator as well like we can approximate the behavior of our system in actual scenario

About Cisco's Packet Tracer

Configurations on the Router R0 Router> Router>enable Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#hostname R0 R0(config)# R0(config)#router ospf 12 R0(config-router)#network 192.168.1.1 0.0.0.0 area R0(config-router)#network 192.168.2.1 0.0.0.0 area 0 R0(config-router)#network 192.168.3.1 0.0.0.0 area 0 R0(config-router)#network 192.168.4.1 0.0.0.0 area 0 R0(config-router)#exit R0(config)# R0(config)#ip dhcp pool admin R0(dhcp-config)# default-router 192.168.3.1 R0(dhcp-config)# dns-server 192.168.4.2 R0(dhcp-config)#exit R0(config)#write

Configurations on Routers

Configurations on the Router R1 R1(config)# R1(config)#router ospf 12 R1(config-router)#network 192.168.1.2 0.0.0.0 area 0 R1(config-router)#network 192.168.10.0 0.0.0.255 area 0 R1(config-router)#network 192.168.11.0 0.0.0.255 area 0 R1(config-router)#exit R1(config)# R0(config)#write Configurations on the Router R2 R2(config)# R2(config)#router ospf 12 R2(config-router)#network 192.168.1.2 0.0.0.0 area 0 R2(config-router)#network 192.168.10.0 0.0.0.255 area 0 R2(config-router)#network 192.168.11.0 0.0.0.255 area 0 R2(config-router)#exit R2(config)# R0(config)#write

Cont…

The routing table of router R0 : 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 192.168.1.0/29 is subnetted, 1 subnets C 192.168.1.0 is directly connected, FastEthernet1/0 192.168.2.0/29 is subnetted, 1 subnets C 192.168.2.0 is directly connected, FastEthernet2/0 C 192.168.3.0/24 is directly connected, FastEthernet3/0 192.168.4.0/29 is subnetted, 1 subnets C 192.168.4.0 is directly connected, FastEthernet0/0 O 192.168.10.0/24 [110/2] via 192.168.1.2, 05:45:31, FastEthernet1/0 O 192.168.11.0/24 [110/2] via 192.168.1.2, 05:45:31, FastEthernet1/0 O 192.168.20.0/24 [110/2] via 192.168.2.2, 05:45:31, FastEthernet2/0 O 192.168.21.0/24 [110/2] via 192.168.2.2, 05:45:31, FastEthernet2/0 R0#

Results

The routing table of router R1 : 192.168.1.0/29 is subnetted, 1 subnets C 192.168.1.0 is directly connected, FastEthernet0/0 192.168.2.0/29 is subnetted, 1 subnets O 192.168.2.0 [110/2] via 192.168.1.1, 02:33:30, FastEthernet0/0 O 192.168.3.0/24 [110/2] via 192.168.1.1, 05:51:59, FastEthernet0/0 192.168.4.0/29 is subnetted, 1 subnets O 192.168.4.0 [110/2] via 192.168.1.1, 05:51:59, FastEthernet0/0 C 192.168.10.0/24 is directly connected, FastEthernet1/0 C 192.168.11.0/24 is directly connected, FastEthernet2/0 O 192.168.20.0/24 [110/3] via 192.168.1.1, 02:33:30, FastEthernet0/0 O 192.168.21.0/24 [110/3] via 192.168.1.1, 02:33:30, FastEthernet0/0 R1#

Cont…

The routing table of router R2 : 192.168.1.0/29 is subnetted, 1 subnets O 192.168.1.0 [110/2] via 192.168.2.1, 05:55:04, FastEthernet0/0 192.168.2.0/29 is subnetted, 1 subnets C 192.168.2.0 is directly connected, FastEthernet0/0 O 192.168.3.0/24 [110/2] via 192.168.2.1, 05:55:04, FastEthernet0/0 192.168.4.0/29 is subnetted, 1 subnets O 192.168.4.0 [110/2] via 192.168.2.1, 05:55:04, FastEthernet0/0 O 192.168.10.0/24 [110/3] via 192.168.2.1, 05:55:04,

FastEthernet0/0 O 192.168.11.0/24 [110/3] via 192.168.2.1, 05:55:04,

FastEthernet0/0 C 192.168.20.0/24 is directly connected, FastEthernet1/0 C 192.168.21.0/24 is directly connected, FastEthernet2/0 R2#

Cont…

Ping from Tablet PC0 to PC0: PC>ping 192.168.10.2 Pinging 192.168.10.2 with 32 bytes of data: Reply from 192.168.10.2: bytes=32 time=266ms TTL=126 Reply from 192.168.10.2: bytes=32 time=173ms TTL=126 Reply from 192.168.10.2: bytes=32 time=156ms TTL=126 Reply from 192.168.10.2: bytes=32 time=172ms TTL=126 Ping statistics for 192.168.10.2: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 156ms, Maximum = 266ms, Average = 191ms

Verification of Results

THANKING YOU