We say OSPF is a hierarchial interdomain protocol but RIP i

: We say OSPF is a hierarchial interdomain protocol, but RIP is not. What is the reason behind the statement?

Solution

Answer:

OSPF:

>> Using OSPF is routing simulation of data traffic control.

>> Objective To design a network for a software development organization based on OSPF.

>> The organization has three departments, development, testing and trainee and a high speed internet connection.

>> It is not necessary to get into the reasons behind your decision to build an OSPF network or any of the previously covered definitions of what a network is.

>> The trainee department should not have access to internet browsing, but all other communication should be allowed on the internet.

>> There are several intradomain routing protocols. Some domains use RIP, which is a distance vector protocol.

>> Other domains use link-state routing protocols such as OSPF or IS-IS. Finally, some domains use static routing or proprietary protocols such as IGRP or EIGRP.

>>  while designing your OSPF network should follow the five basic goals.those are.

a)Functionality

b)Scalability

c)Adaptability

d)Manageability

e) Cost effectiveness.

Explanation:

a)Functionality

-->The network must work is the absolute bottom line.

-->Because networks are an integral part of enabling individual users to do their jobs, this is essential. It is here that the use of Service Level Agreements (SLAs) is essential.

b)Scalability:

-->As your organization grows, the network must be able to keep pace. Your network and its initial design must enable it to expand accordingly.

c) Adaptability:

--> Adaptability refers to your network\'s capability to respond to changes.

--> In most cases, adaptability refers to your network\'s capability to embrace new technologies in a timely and efficient manner.

d) Manageability:

-->To provide \"true\" proactive network management is the goal here.

e)Cost Effectiveness:

-->In this case, I have saved the true bottom line of network design for last.

RIP:

>> RIP stands for The Routing Information Protocol.

>> The Routing Information Protocol (RIP) is the simplest routing protocol that was standardised for the TCP/IP protocol suite.

>> Routing Information Protocol. An intradomain routing protocol based on distance vectors that is sometimes used in enterprise networks.

>> RIP routers periodically exchange RIP messages.

RIP message format:

0 1 2 3

0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

+ - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - +

| command 1 | version 1 | must be zero (2) |

+ - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + -

| |

- route table entry 1 (20) -

| |

+ - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + -

| |

~ ~

| |

+ - + - + - + - + - + - + - + - + - + - + - + - + - + - + -+ - + - + - + -+ -

| |

- -

| rout table entry N (20) |

+ - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - +

>> Each RIP message contains a set of route entries. Each route entry is encoded as a 20 bytes.

>> RIP send out periodic routing updates in every 30 sec

>> RIP send out full routing table every periodic update

>> RIP is uses form of distance as a metric.

>> OSPF and RIP Comparison Characteristic s OSPF RIPv1 RIPv2 Type of protocol Link State Distance,Vector Distance, Vector Classless Support

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