CCN_2012

CONTENTS

Lab Session No. Object Page No.

1.

Installing network card in Windows environment, and performing following configurations:TCP/IP, IP and default gateway

1

2. Making the following kinds of UTP cables:Straight through and cross

10

3. Practicing some basic commands to interact with the Cisco IOS (Internetwork Operating System) CLI Software

17

4. Copying IOS image and configuration to and from CISCO router.

23

5. Configuring static routes on Cisco routers. 28

6. Configuring RIP(Routing Information Protocol). 31

7. Configuring RIP Version 2 34

8. Configuring OSPF (Open Shortest Path First) Single Area 36

9. Configuring IGRP (Interior Gateway Routing Protocol). 41

10. ConfiguringEIGRP (Enhanced Interior Gateway Routing Protocol)

45

11. Recovering lost router password. 50

12. Studying and configuring Access Lists 54

13. Studyingbasic LAN switch operation. 57

14. Learning Loop Avoidance with Spanning Tree. 60

15. Configuring Virtual LANs 66

Computer Communication Networks Lab Session 1 NED University of Engineering & Technology - Department of Computer & Information Systems Engineering

1

Lab Session 01

OBJECT

Installing network card in Windows environment, and performing following configurations:

TCP/IP IP configuration Default Gateway

EQUIPMENT AND APPARATUS

Network Interface Cards Ethernet hub or switch UTP cables THEORY Networking in Windows NT and later versions allows computers running the Windows operating system to participate in a domain or peer-to-peer network and share resources with other computers, running Windows NT, 9x, 2000, XP or some other operating system.

It also allows you to connect to the Internet using dial-up connection or LAN. Windows network can use a variety of protocols. NetBEUI is a protocol most suitable for smaller networks, as a rule of thumb, not exceeding 10 hosts.

TCP/IP is a protocol suite well suited for larger networks, but it can also be used on smaller networks. It is the protocol that the Internet uses. As you know TCP/IP is a collection of many different protocols, with IP being the protocol that runs on the network layer. Among other things, IP defines addressing requirements for the hosts. An IP (Internet Protocol) address uniquely identifies a node or host connection to an IP network. System administrators or network designers assign IP addresses to nodes. IP addresses are configured by software and are not hardware specific. An IP address is a 32 bit binary number usually represented as four fields each representing 8 bit numbers in the range 0 to 255 (sometimes called octets) separated by decimal points.

For example: 150.215.17.9

It is sometimes useful to view the values in their binary form.

150.215.17.9 10010110.11010111.00010001.00001001

An IP address consists of two parts, one identifying the network and one identifying the node. The class of the address determines which part belongs to the network address which part belongs to the node address.

ter Communversity of Engin

CEDURE

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RCISES

the paramete

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now done w

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with TCP/IP

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8

default gatew

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as shown:

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Computer Communication Networks Lab Session 1 NED University of Engineering & Technology - Department of Computer & Information Systems Engineering

9

________________________________________________________________________

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3. Using the same command as in exercise 2, give a detailed view of network settings. Also give commands to release and renew the leases if the IP address is obtained from a DHCP server. _________________________________________________________________________

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ComputNED Univ

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Session 2

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ComputNED Univ

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11

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Lab Sms Engineering

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Session 2

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ComputNED Univ

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12

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Lab Sms Engineering

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guided by, a

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Session 2

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ComputNED Univ

A Straig EIA/TI

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CEDURE

ke Cable

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p one end oce the cablele with the

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nd 568B sta

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pite what yole will wor

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l to the desor between tld) for 100B

with the strove on the bof the stripp

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Cable conne

artment of Com

13

ds, whereas

standard yostart a cros

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work in a .

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Lab Sms Engineering

s different en

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are using thnd align the e jacket off

A 568A and 5

Session 2

nds.

e segments et or about

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ComputNED Univ

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Figur

artment of Com

14

d pull. If yoags, carefullof the cable

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Lab Sms Engineering

will probablout an inchthe jacket.

any. You mand jacket t

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Session 2

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ComputNED Univ

8. Testcabladvainstausedchanand

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t the crimp,le with his antage of twallation andd for small nge its chargive it a fai

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CAUTION

to avoid ru

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RCISES

e the reasometer of the__________

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y is it not ad__________

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, if done pror her bare

wisted-pair d the modulEthernet. Bracteristics. irly firm tug

her end of th

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NS

nning cable

a group of cg them toge

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crowave ovnes, and sho

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stapler to seare stores.

on why it i cable. __________

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dvisable to r__________

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roperly an ae hands. Ancables overar RJ-45 pl

But, don’t puLook at th

g to make su

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les (the forc

ecure UTP c

is not advi

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run UTP ca_________

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artment of Com

15

average persnd that quiter the older tug is the mull that hard

he side of thure it is crim

it has the de

each, hold thm of the plucable. If the

o power cab

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ich can intrinters, TV hones, fansent.

ce should no

cables. Use

sable to be

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able outside __________

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son will noe simply, bethin wire, co

main reason cd on the pluhe plug andmped well.

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bles.

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ot be able toesides loweoaxial cablecoaxial cabug. It couldd see if it lo

and crimp.

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se into themorescent lig

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wire hanger

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Lab Sms Engineering

o pull the per cost, is thes. In fact, tle is no lon

d stretch theooks like th

r and with Rred correctlyand they are

ot over-clinh that you d

m. Here’s aght, copierslectric oven

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e than four

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Session 2

lug off the he primary the ease of

nger widely e cable and he diagram

RJ-45 clips y, and they e different,

ch them. Itdeform the

a short list: s, welding ns, dryers,

e available

times the

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ComputNED Univ

____

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fine the reco__________

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artment of Com

16

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cable length__________

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mputer & Infor

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h for UTP an__________

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nd cite a rea__________

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Lab Sms Engineering

__________

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ason for it. __________

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THEO The simprotocowhich c Static rconfiguIOS com ip rointerf where:

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mplest methols are flexib

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outedestface} [d

destination-like the rousubnet-masdestination address andip-address a destinatioin this commAlternativelout of. Addip routeinserted intgenerally rerouter consithrough thaaddresses th


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od to route ble and adjr network b

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ding a statice 0.0.0.o the routinecommendeiders each oat interfacehat route thr


Lab

figuring sta

Figure 5.1:

packets on ust to netw

bandwidth w

d route forneeds to rea

ure static rou

-address] [tagta

the destinah ubnet maskMultiple ne

ask combinahat ip addrethat matche

g-interfacec route to an.0 0.0.0ng table onled. When thof the hosts e, and thererough the st

artment of Com

28

b Sessio

atic routes o

Scenario for

a network iwork changewith the user

r a certain ach a netwoutes is ip

ssubnet-mag] [per

ation addre

k to be usetworks maation matchess to forwaes the destin

specifies wn Ethernet o0.0 Ethely when thehe next hop

within the refore it wiltatic route.

mputer & Inform

n 05

on Cisco rou

r static routes

is static roues, they do hr data traffi

destinationork that it isroute. Th

mask{ip-rmanent]

ss prefix fo

sed on the ay be combes all hosts ard a packetnation-addre

which interfor other broernet 1/e interface iof a static rrange of thell send AR

mation Systems

uters.

s

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n network.s not directlyhe syntax is

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t to if an IP ess subnet-m

face the pacoadcast inte2) will cau

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RP requests


gh dynamicated networ

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to any des

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dd

t p

d

DTE/DDCE annull seriDCE is The serunit/dat PROC

1. C 2. C

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ip rouip 5. O

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m

EXER 1. Run t


distance is default valutag value capermanent down.

DCE nd DTE are ial cable DClocated at t

rvices that ta service un

CEDURE

Connect the

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For R1, entip roip rou

On R2 enteute 172.route 17

On R3 enteip roip rou

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the comman


the optionaue is 1. an be used aspecifies th

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r: .16.10.0 72.16.20

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as shown in

ip addressework diagram

wing static .16.20.0.168.20.

255.2550.0 255.

.16.10.0.168.10.

tatic routes

ip route

route and w

artment of Com

29

rative distan

" value for ute will not

E-DTE conon equipmend while the

E is often arovides cloc

the network

es and clockm.

routes 0 255.250 255.25

5.255.0 255.255.

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by entering

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write its outp

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nce value fo

controlling t be remove

nnection betnt) and DTEDTE is atta

accessed vicking and D

k diagram.

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5.255.0 55.255.0

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g the follow

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mation Systems

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192.168 192.168

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wing comma


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or channeles the clock

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.10.2 8.10.2

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strative dist

e on R3 an

he other ro

interface fr

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artment of Com

30

tance of sta

nd assign an

outers to re

rom routers

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mputer & Inform

atic route? W

n IP addres

each this in

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mation Systems

Write the IP

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erify your w

y.

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on 5

mmand to

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work by

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OBJE

THEO

Routingan autoadminisdesigne

The oridistriburouting 2453, adof RIP allow su12.0(1)T

Some aoverheaeasy to the wor

RIP usethat usesecondsrandomThe Cisseconds

If a neigunavailaneighbo


CT

ORY

g Informationomous sy

stration, shad to work w

iginal versiuted with th

protocol bedded some are discuss

upport for dT and will n

advantages ad, in termsimplementld.

es timers boe RIP sends; this proce

mized by up sco implems.

ghbor has nable or theor has not re


Configu

on Protocol ystem. An aaring a com

with small to

ion of RIPhe 4.3 Berkefore it wasadditional

sed in this demand circnot be discu

of using Rs of bandwi, compared

th to regulad an updateess is termeto +/– five

mentation se

not responde network esponded fo


Lab

uring RIP(R

Figure 6

is an Interioautonomousmmon routo medium-s

P is based keley Softws formally dfeatures andmodule. RFcuits (Trigg

ussed here.

RIP, especiidth used anto newer I

ate its perfore message

ed advertisinseconds in

ends update

ded in 180 sconnecting or 180 secon

artment of Com

31

b Sessio

Routing Inf

6.1: Scenario

or Gateways system is ting strategsized netwo

on the proware Distribdefined in Rd functionaFC 2091 spgered RIP).

ally in smnd configurIGPs, and h

rmance andto all of

ng. The RForder to pr

es every 30

seconds, it it to the

nds, the rou

mputer & Inform

n 06

formation P

o for RIP

y Protocol (Ia collectio

gy. A distanrks.

ogram routebution. RIP

RFC 1058. Rality to the opecified addSupport fo

all networkration and m

has been imp

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revent synch seconds m

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or Triggered

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ed invalid;


ing it is useorks under protocol, R

unced "routwidespread un 2, definedrsion. Both tensions ford RIP was a

there is vent time. RIPin networks

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enough shown tthe casemetric o16, andacceptedroute wwill be alternate The actinvalid is generrouting time muconsidenotifiedWhen tinitial vand 240with the To adjuare comholddowhorizon interfacrouting of infininvalid accepted Triggeretriggereinformaminimu PROC

1. C

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3. I


that a routeto be unreae of RIP, thof infinity,

d kept in thd while the

when the holadvertised e paths are

tual timers timer, a rourally set totable to all

ust expire wred invalid

d of this facthe route flvalues for th0 seconds foe timers ba

ust for rapidmmon to manwn mechanin prevents in

e that the rloops. Poisity back to (expired). Ad while the

ed updatesed wheneveation regardum delay of

CEDURE

Cable up th

Assign the serial links,

Issue RIP ro


e won't be ichable by shis number then the rou

he routing taroute is in hlddown timwith an inffound.

used to accute-holddow 30 secondneighbors e

without a ro. When a ro

ct. This notilush-timer ehese timers aor the route-asic router

d network-tony routing pisms to prevncorrect merouter is uson reverse othe origina

As discussedroute is in h

s are also r a metric ding routesfive second

he network a

IP address , has been u

outing comm


invalidated sending a no

is 16. If anute is placeable. No upholddown s

mer expires, finity metric

complish thwn timer, ands, ensuringevery 30 seouter havinoute is marification muexpires, theare 180 seco-flush timerr configurat

opology chaprotocols. Rvent incorre

essages froming to reachoperates by

al source of d above, noholddown s

an includefor a route

s that haveds between t

as shown in

as shown iused to indic

mands on a

artment of Com

32

by a singleormal updan advertise

ed into holdpdates fromstate. If othe

then their c for a peri

he above tand a route-fg that each conds. The

ng heard aborked invalidust occur pre route is ronds for ther. The valuetion comma

anges, RIP RIP implemect routing

m being proh the route

y advertisingf the route. Ho updates frostate.

ed convergee changes. Te changed, triggered up

n the diagram

in the diagrcate a DCE

all the router

mputer & Inform

e missed upate messagement is rec

ddown statem other neiger neighborsupdates wi

iod of time

asks are a rflush timer. router willroute-invalout a particd or put in rior to expirremoved froe route-invaes for each ond.

specifies nments split ho

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g routes thatHolddown om other ne

ence and sTriggered u

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ram to the aport.

rs starting fr

mation Systems

date messa with a met

ceived frome, advertisedghbors for s are still adll then be aafter the ho

routing-updThe RIP ro

l send a colid timer detcular route holddown sration of thom the roualid and rouof these tim

numerous storizon withn from beinnot adverti

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stability feupdates maycheduled uprevent updat

appropriate

from the glo


ge. The neitric of "infi

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dvertising thaccepted. Tolddown sta

date timer, outing-updaomplete coptermines hobefore that state, neigh

he route-flusuting table. ute-holddowmers can be

tability featuh poison-revng propagatising routeshorizon helpchable with d of markinr the same r

ature. Updy also contpdates. Thete storms.

interfaces.

obal config m

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route is hbors are sh timer.

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ures that verse and ed. Split

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ng routes route are

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For the

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4. O

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5. Type eSendinsecond!!!!! Succes1/2/4 EXER

1. Conf

upda

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On R1: rounetnet

On R2 rounetnet

On R 3 router r

netnet

wo comman

Ping the ho

escape sng 5, 10ds:

ss rate ms

RCISES

figure RIP v

ates are sent

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e commands

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uter rip twork 172twork 192

uter rip twork 192twork 192

rip twork 10.twork 192

nds enable t

ost from R1

sequence 00-byte I

is 100 p

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.

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2.16.10.2.168.10

2.168.102.168.20

.0.0.0 2.168.20

the routing p

.

to aborICMP Ech

percent

n two route

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y the default

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artment of Com

33

.0 0.0

0.0 0.0

0.0

protocol RI

rt. hos to 1

(5/5),

ers. Run De

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t update and

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mputer & Inform

IP.

0.0.0.1,

round-tr

ebug ip rip a

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, timeou

rip min/

and note th

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n timers for

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ut is 2

avg/max

he address o

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RIP v1.

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on 6

=

on which

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ComputNEDUniv

OBJE

THEO RIPv2 iits actiadminisrouting authentiConfiguthe (co

EXER 1. Note

____

____

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CT

ORY

is almost theve interfac

strative distprotocol b

ication usinuring routeronfig-rou

rouvernetnet

RCISES

down the ro

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e same as thces at peritance are thecause it a

ng MD5 encr with RIP vuter) #

uter rip rsion 2 twork 172twork 192

outing table

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Lab

Configu

Figure 7.

he RIP versiodictime ihe same as

also sends scryption schversion 2 isprompt a

2.16.10.2.168.10

e for Router

__________

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__________

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artment of Com

34

b Sessio

uring RIP V

.1: Scenario

sion 1. RipVintervals.Ths Rip versisubnet inforheme. And is very simpand the route

.0 0.0

r R1.

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mputer & Inform

n 07

Version 2

for RIPv2

V2 also sendhe timers,loion 1.But Rrmation’s wt also suppo

ple. Just adder is runnin

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mation Systems

ds its compoop avoidaRIPv2 is cwith each roorts discontid the commg RIPv2.

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Lab Ses Engineering

lete routingance schemconsidered couter.It alsoiguous netw

mand version

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ession7

g table to mes and classless o allows

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2. Run t

the u

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other

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the comman

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e down the s

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le working

r words, how

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nd debug rip

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source IP ad

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on R1, how

w can you v

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ddress for th

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w could you

verify if a pi

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artment of Com

35

down the m

__________

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he ping pac

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u check if H

ing from H

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ckets when y

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1 to loopbac

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mation Systems

dress on wh

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you ping H1

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ch the loop

ck of R1 is

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Lab Ses Engineering

hich RIPv2 f

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1 from R1.

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pback interf

successful?

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ession7

forwards

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ComputNEDUniv

OBJE

THEO

Open S(IETF) GatewaDijkstrapropriet

Like allreconveinforma

The flowinter

Full Sup

man A di Equ The

devi Sup The

Table 8

C

VLSM

Manual

Type of

Classles


CT

Co

ORY

Shortest Patas a replace

ay Protocol a's Shortest tary to any v

l link state pergence, supation. Other

use of areaw of routinrnetwork toly classless port of cla

nagement imensionles

ual-cost load use of resices port of auth use of rout

.1 Characte

haracterist

support

summariza

f protocol

ss support


onfiguring

th First (Oement for th

(IGP). OSPath First (vendor or o

protocols, Opport for mfeatures of

as, which reng protocol opologies behavior, essless route

ss, arbitraryd balancing served mul

hentication fte tagging fo

eristics of O

tic

ation


Lab

OSPF (Op

SPF) was he problemSPF is a li(SPF) algorirganization

OSPF's majmuch larger f OSPF are:

educes the ptraffic, an

liminatingse table look

y metric for more ef

lticast addre

for more seor the tracki

SPF

OSP

Yes

Yes

Link st

Yes

artment of Com

36

b Sessio

en Shortest

developed matic RIP an

ink state pithm. It is a

n

or advantaginternetwor

protocol's imnd makes p

uch classfukups, VLSM

fficient use esses to re

cure routinging of exter

PF

s

s

tate

s

mputer & Inform

n 08

t Path First

by the Intend is now throtocol tha

an open stan

ges over disrks, and les

mpact on Cpossible the

l problems M, and sup

of multiple duce the im

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mation Systems

t) Single Ar

ernet Enginhe IETF-recat, as the nndards proto

stance vectoss susceptib

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as discontigpernetting fo

paths. mpact on n

Lab Ses Engineering

rea

neering Tascommendedname impliocol—that i

or protocolsbility to bad

emory, contion of hier

guous subneor efficient

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Auto-su

Discont

Route p

Hop cou

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Peer aut

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DR an

DR (De

The DR

To inter

To m

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Note: rthe DR of a rou

BDR(B

A BackTheBDRupdates


ummarizatio

tiguous supp

propagation

unt limit

gence

thentication

hical kUpdates/ Ration

nd BDR

esignated Ro

R has the fol

represent trnetwork manage the

ncept behinrouter. Eachudonode. On

router mighon another

uter's interfa

ackup Desi

kup DesignR receives .


on N

port Y

M

N

F

n Y

Route ED

outers):

llowing duti

the multi-a

flooding pr

nd the DR h routeron nly the DR

t be a DR oof its attac

ace, not the

ignated Rou

nated Routeall routing


No

Yes

Multicast on

None

Fast

Yes

Event triggeDijkstra

ies:

access netw

rocess on th

is that the the networkwill send L

on one of itshed multi-aentire route

uter):

er (BDR) ig updates fr

artment of Com

37

n change

ered/

work and i

he multi-acc

network itk forms an

LSAs to the

s attached maccess netwoer.

s a hot starom OSPF

mputer & Inform

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mation Systems

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internetwork

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the DR onouters but

Lab Ses Engineering

to the rest

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and it mighhe DR is a p

nmulti-accesdoesn’t flo

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t of the

de," or a epresents

ht not be property

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Note: ifthe DR

Configu Firs Ente

mas In th

ExitaddrNoteexpl

Quit Now Configu Ente

mas Quit

conf Now

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confsync

router Ente


f the router or BDR ele

172.16.68.1/Fa0/0

P=2

urations fo

t form the per interface sk he interface

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OBJEC

THEOR

In this laProtocol the mid-1robust prtopologywas deve(RIP). Thmetric (h

To provimay run second lipaths areis three tthat are w

IGRP is aall or a pneighboricalculate

IGRP useThe distaof the rouroutes ha

r Communicrsity of Enginee

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ab, we will (IGRP). Int

1980s by Cisrotocol for r, and consist

eloped, the mhe small hop

hop count) di

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times lower, within a certa

a distance-vportion of itsing routers.distances to

es a combinaance value isute. In IGRPave an equal

cation Netwoering & Technol

Configuring

Fig 9.

introduce yterior Gatewsco Systemsrouting withting of medi

most popularp-count limiid not allow

al flexibilitytream of trane goes dow

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ain range of

ector protocs routing tab As routin

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ation of adms the relativeP, distance aldistance.

orks logy – Departme

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IGRP (Inte

.1: Scenario

you to your way Routing

, Inc. In creahin an autonia with diverr intra-AS roit (16) of RIfor much ro

y, IGRP peraffic in rounwn. Also, mu, if one pathpath will be the best rout

ol. Distanceble in a routig informati

within the int

ministrative d believabilitlways takes

A

ent of Computer

41

Session

erior Gatewa

for IGRP im

second rouProtocol (IG

ating IGRP, nomous systrse bandwid

outing protocIP restricted uting flexibi

mits multipand-robin fasultiple paths

h is three timused three tte are used a

e-vector routing update mion proliferaernetwork.

distance and y of a route,precedence

r & Information

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ay Routing P

mplementatio

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tem (AS) hadth and delaycol was the R

the size of ility in comp

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times as oftas multiple p

ting protocolmessage at reates through

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4

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Protocol).

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plex environ

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ls call for eaegular intervh the netw

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etric. The me

1

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goal to provbitrarily comstics. When Iormation Prorks, and its snments.

l-bandwidth switchover the metrics fobecause its mutes with m

ach router tovals to each

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routing deciselative desiraetric is used

outing ped in vide a mplex IGRP otocol single

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trative Dist

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s.

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or of 1000 wh of 64,0004 command


d by Cisco rothe relative

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er is runningols. The protled in the ro

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trics. Interneion:

measures therface can accdia in units oing interface

ays, and fastor you can uerface coo change the

he measure oually expressf the media he smallest oumber. (The

when using t bits per seon a serial in

ent of Computer

42

outers has a e believabiliination netwer distance vtatic routes ahereas IGRP

g two differetocol that haouting table e table, you case, the IGRan one protoal to the rou

etwork delay

e time it takecept onto theof 10 microses and divide

ter links havuse the Ciscommand is e default del

of the speed sed in unitsbandwidth

of all the bae bandwidth

the bandwiecond. Withnterface, the

r & Information

default-distaity of a rout

work, it will values. It wialso have dis

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y, bandwidth

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ance value ate. If the ro"believe" th

ill then choostances asso

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find the deler by 10. (Th

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microseconterface, spec

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and. A 64K router, if yo64K bandwid

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associated wuter has muhe route witose the routeciated with t

distance of 10

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Reliavalueinformup sta

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PROCE 1. Use a 2. Use th 3. Use a Scenario 1. Assum

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EDURE

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RP reliabilityicates a 100-he link. Reln state, as w

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y reflects the-percent stabiability alsoell as the err

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to 0. If K5 d

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allest metric

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0.0.0-130.13.

ps for serial l

nk between Rdcast traffic

ent of Computer

43

e stability ofble link. Thi incorporateror rate of fr

n of the linknt saturated.zation of a lin

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P adds togein questionwith the co

h)/(256 – Lo

1 and K2 =

does not equ

is the best p

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links.

R1 and R3 on this link

r & Information

f the link, gs value is ba

es how oftenames arrivin

k, given as a. A value ofnk.

able algorithbandwidth an

ether the wn. These vaonstants K1,

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ual 0, an addi

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Labn Systems Engin

given as a frased upon ren the link trang on the link

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Delay

n using the d

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b Session 9 neering

raction of 25eceived keepansitions frok.

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g the networ2 s0/1 and R

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rks (a)10.0.0R3 s0/0 (d) 1

on the R1-Roblems with get full conn

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etween R3 areliable and down. Mak

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y reflects the

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0.0 for R1-fa3.0.0.0 for R

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erial link ba

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ent of Computer

44

a0/0 (b)11.0R3 fa0/0.Con

k from /16 totivity, use th

ack to /24.

ually load bae on R1.

ing providedhas been takhanges to yo

eing providebetween R3 ssary changes and delays

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r & Information

0.0.0 for R1-nfigure IGRP

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Labn Systems Engin

-s0/0 and R2P appropriat

k for networkds that you h

ween the ethe

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erent ISP anbeen upgrad

GRP configuP should load

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b Session 9 neering

2 s0/0 (c)12tely.

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ComputeNED Unive

OBJEC

THEOR EIGRP isEIGRP bIGRP, EIthat run includes t Why preEIGRP isdistance OSPF donetworksEIGRP hat startupsuitable f100). EIGRP mEIGRP upossible p1) Bandw3) Load ConfigurConsider

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CT

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RY

s a proprietabecause it is IGRP uses ththe same rothe subnet m

efer EIGRPs sometimes vector and l

oes; instead s plus the cohas link statep and then sefor very larg

metric calcuunlike many path, EIGRP

width

ring EIGRPthe topolog

g are the IP

172.16.3


guringEIGR

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ulation: other protoc

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rotocol that ne of the twof an autonoocol and shoute updates.

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ent of Computer

46

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ng 172.1

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from 172from 172from 172from 172

tatisticckets: Simate ronimum =

ng 172.1

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from 172from 172from 172from 172

tatisticckets: Simate ronimum =

playing EIGR

2#sh ipeRP Topol

P - Pasr - Rep

16.64.0/ via C

16.16.0/ via C

16.4.0/2 via C

16.32.0/


end to end co

6.32.2

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s for 17ent = 4,und trip125ms, M

6.16.2

.16.2 wi

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s for 17ent = 4,und trip125ms, M

RP topology

igrp topogy Tabl

sive, A ly statu

24, 1 suonnected24, 1 suonnected4, 1 suconnected24, 1 su


onnectivity f

th 32 by

: bytes=: bytes=: bytes=: bytes=

2.16.32. Receive times i

Maximum =

th 32 by

: bytes=: bytes=: bytes=: bytes=

2.16.16. Receive times i

Maximum =

y on R2 only

ology e for AS

- Actives

ccessorsd, Serialccessors

d, FastEtcessors,

d, Serialccessors

ent of Computer

48

from PCs.

ytes of d

=32 time==32 time==32 time==32 time=

2: d = 4, Ln milli-

= 156ms,

ytes of d

=32 time==32 time==32 time==32 time=

2: d = 4, Ln milli-

= 156ms,

y

1

, U - Up

, FD is 2/0 , FD is hernet0/ FD is 23/0 , FD is

r & Information

data:

=156ms TT=125ms TT=127ms TT=141ms TT

Lost = 0 -seconds:Average

data:

=140ms TT=156ms TT=125ms TT=141ms TT

Lost = 0 -seconds:Average

pdate, Q

20512000

28160 /0 20512000

20514560


TL=126 TL=126 TL=126 TL=126

(0% loss = 137ms

TL=126 TL=126 TL=126 TL=126

(0% loss = 140ms

- Query,

0

0

Session 10 neering

s),

s),

R - Repply,

ComputeNED Unive

P 172.1 Router2 IP-EIGRH AdSeq CntNum 0 1720 1 1724 EXERC 1. What

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2. When_____

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via 116.8.0/2 via 1 via 1

2#sh ipe

RP neighddress

2.16.64.

2.16.4.1

CISES

t four routed __________

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n is redistrib__________

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72.16.644, 2 suc72.16.6472.16.4.

igrp ne

bors for In

1 Se

Se

protocols ar___________

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ution require___________

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ighbors

processnterface

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re supported__________

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ed for EIGR__________

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ent of Computer

49

4560/281 FD is 24000/205000/2051

1 Hol

(se

12

10

d by EIGRP?___________

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RP? ___________

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r & Information

160), Ser21024000512000), 12000), S

ld Uptim

ec)

00:02

00:02

? __________

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rial2/0

Serial2/Serial3/0

me SRT

2:50 40

2:50 40

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Session 10 neering

/0 0

TT RTO

(

1000

1000

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Q

(ms)

0 0

0 0

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ComputeNED Unive

OBJEC

THEOR In this labprocedurerecovery 1. Pleas 2. Pleas

a pass 3. Use s

recov You will bit registsite, or an Software Bit Num0 to 3 6

8 13

Explanat Boot Fiel0x0000 0xXXX10xXXX20xXXXF


CT

RY

b you will lees differs derequires tha

e use cisco a

e be preparesword other

show ververy.

be working ter. Look upny other reso

e Configura

ber Valu0x000x00

0x010x20

tion of Boot

ld MSt

Bo2 F

If bothsyfroth


R

earn the procepending onat the router b

as the passw

ed to do passthan cisco.

rsion comm

with the conp informatioources availa

ation Registe

ue 000 to 0x000040 (setting b

00 000

t Field

Meaning tays at the syoots the firstyou set the

oot system ce system so

ystem commom a networe case in our


Lab S

Recovering l

cedures requn the platformbe taken out

word where n

sword recove

mand to de

nfiguration ron about theable to you.

er Bits (Wh

0F bit 6 to 1)

ystem bootstrt system imaboot field v

command stooftware as dand, the rourk server. Ifr lab, the sta

ent of Computer

50

Session

lost router p

uired to recom and the st of operation

necessary.

ery right awa

etermine the

register as pae config-regi

hat do they m

MeBooCauNVBreBoonetw

rap promptage in onboarvalue to 0x2 ored in the cdirected by uter forms a df there is no ndard setup

r & Information

11

password.

over a lost losoftware usen and power

ay. The gro

e platform b

art of this labister on docu

mean)

eaning ot field uses system

VRAM conteeak disabledot default work boot fa

ard Flash memthrough 0xFonfigurationthat value. default boot network serdialogue is

n Systems Engin

ogin or enabled, but in allred down. N

oup before yo

before you t

b. The confumentation

m software toents d

Flash softfails

mory F and there n file, the rou If there is

t filename forver configustarted.

Lab Sessionneering

le password.l cases, passote:

ou might hav

try the pass

fig-register isCD, CISCO

o ignore

tware if

is a valid uter boots s no boot or booting ured, as is

n 11

. The sword

ve set

sword

s a 16 O web

ComputeNED Unive

PROCE Assume ythe instru 1. Types 2. Using 3. Press

router 4. This i

For 2 T

co T For 2 T

th T

co 5. Type 6. Type 7. Type

memo 8. Type 9. Type

comm 10. Type 11. Type 12. Type


EDURE

you have beuctions below

show vers

g the power

CTRL+Brer into ROMM

is where the

25XX and 40

ype o/r 0onfigurationypeiorrese

2600, 3600, 4

ype confrehe configuratype resetonfiguration

no after eac

enable at

configmeory. Do not

config t

enable pmand no en

config-r

write me

show ver


en locked ouw from the u

sion and re

switch, turn

eak on the teMON mode.

procedure d

000:

0x2142or0. etat the > p

4500, 4700:

eg 0x214tion. t at the rom.

ch setup ques

the Router>

emorcopy stype config

termand ma

password nable pas

register

emorcopy r

rsion and o


ut of the rouuser mode. D

ecord the va

off the route

erminal key.

differs depen

x42at the

prompt. The

2 at the rom

mmon 2> p

stion or pres

> prompt. Y

start runterm.

ake the chang

<passworssword.

0x2102, o

running s

observe the c

ent of Computer

51

uter. You haDo not get in

lue of the co

er and then t

yboard within

nding on the

> prompt t

router reboo

mmon 1> pro

prompt. Th

s Ctrl-C to s

You'll be in e

nningto co

ges. The pro

rd> to set th

or the value y

startup to

configuration

r & Information

ave access onnto privilege

onfiguration

turn it on.

n 60 second

platform.

to boot from

ots but ignor

ompt to boo

he router re

skip the initi

enable mode

opy the nonv

ompt is now

he password

you recorded

o commit the

n register se

n Systems Engin

nly to the used mode.

register.

ds of the po

m flash wit

res its saved

ot from Flash

eboots but i

al setup proc

e and see the

volatile RAM

w hostname(c

d to the new v

d in step 1.

e changes.

etting careful

Lab Sessionneering

ser mode. Fo

owerup to pu

thout loadin

d configuratio

h without lo

ignores its

cedure.

e Router# pro

M (NVRAM

config)#.

value or issu

lly.

n 11

ollow

ut the

ng the

on.

ading

saved

ompt.

M) into

ue the

ComputeNED Unive

EXERC 1. Expla

_____

_____

_____

_____

_____

_____

_____

2. There

_____

_____

_____

_____

_____

3. Expla

_____

_____

_____

_____

_____

4. Write

pass

_____

_____

_____


CISES

ain the settin

__________

__________

__________

__________

__________

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e are many d

__________

__________

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ain the need

__________

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e down the

sword.”

__________

__________

__________


ng when the

___________

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different way

___________

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for step 7 in

___________

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e difference

___________

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configuratio

__________

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ys to access a

__________

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n password re

__________

__________

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between “

__________

__________

__________

ent of Computer

52

on-register is

___________

___________

___________

___________

___________

___________

___________

a router. Wr

___________

___________

___________

___________

___________

ecovery proc

___________

___________

___________

___________

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“enable p

___________

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r & Information

s set to 0x254

__________

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rite down the

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cedure.

__________

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password

__________

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n Systems Engin

42.

___________

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ese ways.

___________

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d” and “en

___________

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Lab Sessionneering

__________

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able sec

__________

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n 11

_____

_____

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cret

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ComputeNED Unive

_____

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5. What

same?

_____

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6. When

passw

_____

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7. Set th

Cross

there

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__________

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t happens if

?

__________

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n you config

word set for t

__________

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he configura

s check with

any differen

__________

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___________

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f “enable

___________

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gure enable p

the privilege

___________

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ation-register

h configurati

nce? Explain

___________

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__________

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passwor

__________

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password an

ed mode. Is

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r to 0x2542.

ion-register

n.

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ent of Computer

53

___________

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d” and “en

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nd issue the c

there a meth

___________

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Reload the

settings and

___________

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r & Information

__________

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nable sec

__________

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command sh

hod to preve

__________

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e router. Do

d see if it m

__________

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n Systems Engin

___________

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cret pas

___________

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how running

ent it from be

___________

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oes the break

matches with

___________

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Lab Sessionneering

__________

__________

__________

ssword” ar

__________

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g, you can se

eing visible?

__________

__________

__________

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k sequence w

the settings

__________

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n 11

_____

_____

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re the

_____

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ee the

?

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work?

s. Is

_____

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ComputeNEDUniv

OBJE

THEO

An accecommonimplemnecessa There arlist: Rule#1 It’s alwstart wit Rule#2 It’s commatchescompari Rule#3 There ismatch ththese ruin mind There ar

1.

2. E

Standar These umade badeny antraffic s

er Communicversity of Engin

CT

ORY

ess list is en and easie

menting secuarily involve

re a few im

ays comparth the first l

mpared withs the conditisons take p

s an implicihe condition

ules has somd that creatin

re two main

Standard ac

Extended ac

rd access li

use only theased on the

n entire suiteuch as web

cation Netwoneering & Tech

Stu

essentially est to underurity policie blocking p

mportant rule

red with eacline of the a

h lines of tion on a li

place.

it “deny” atn on any of

me powerfulng effective

n types of ac

ccess lists

ccess lists

ists

e source IP source IP a

e of protoco, Telnet, UD

orks hnology – Depa

Lab

udying and

a list of corstand usesies. Accesspackets.

es that a pac

ch line of thaccess list, th

the access ine of the a

t the end of f the lines inl implicatione access lists

ccess lists:

address in address. Thiols. They doDP, and so o

artment of Com

54

b Sessio

d configurin

onditions ths of access s lists can

cket follows

he access lishen go to li

list only uaccess list,

f each accesn the accessns when filts truly takes

an IP packis means thaon’t distingon.

mputer & Inform

n 12

ng Access L

hat categorlists is filteven be u

s when it’s

st in sequenne 2, then li

until a matthe packet

ss list—thiss list, the patering IP pas some prac

ket as the coat standard

guish betwee

mation Systems

ists

rize packetstering unwaused in sit

being comp

ntial order—ine 3, and s

tch is madet is acted u

means thatacket will beackets with actice.

ondition tesaccess listsen any of th


s. One of tanted packetuations tha

pared with a

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t if a packete discardedaccess lists,

st. All deciss basically phe many typ

on 12

the most ets when at don’t

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t doesn’t d.Each of , so keep

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ComputeNEDUniv

Its comm access-

Comma R1(conR1(conR1(conR1(conR1(con The abothrough Extend Extendean IP paNetworkaccess l Its comm access<proto


mand synta

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ove commah the router o

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mand synta

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ax is

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Fig 12.1

ter will be

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55

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r fields in thtion IPaddrransport laydecisions wh

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ComputeNEDUniv

Comma accessaccessinterfip acc The abopermit a

EXER Give cobeen blo ________

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ands on the r

s-list 1s-list 1face ethcess-gro

ove commanall other traf

RCISES

ommands toocked.

____________

____________

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router will b

101 deny 101 permihernet 0 oup 101 o

nds will denffic.

enable logg

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Fig 12.2:

be:

tcp 172it ip an

out

ny only the

ging for the

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artment of Com

56

: Extended a

2.16.4.0ny any

telnet from

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mputer & Inform

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subnet 172

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mation Systems

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2.16.40.0 ou

to show the

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eq 23

ut of E0 and

entries that

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on 12

d will

t have

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ComputeNEDUniv

OBJE

THEO LAN sw Add Forw Loo

In this lhosts. Addres A new MAC adestinatflooding PROC Conside

Initially Switch

- V


CT

ORY

witch perfor

dress learninward filter d

op avoidance

ab session,

ss learning

switch has address agation is attacg. As the re

CEDURE

er the follow

y the MAC d

h#sh mac

Mac Ad--------

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St

rms 3 operat

ng decision e

we will exp

empty MAainst the soched, it inisponses are

wing scenar

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database of

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Lab

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rio:

mainCSDsw

3.1: Scenar

f Cisco3560

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artment of Com

57

b Sessio

ic LAN swit

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table. As eaAs the sw

smits the frhe MAC ad

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tch operatio

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Cisco3560

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eration

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ached

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ComputeNEDUniv

-

Switch And tha mainCI

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mainCI Now as address Switch

M- V-

Switch Also for mainCI

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mainCI


----

1 h#

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ISDsw#

any of the table will g

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r mainCSD

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----

0006.2a7

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75.100c

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artment of Com

58

--

DYNA

able

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ping for any

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able

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mation Systems

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- --

puters, the M

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----

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ComputeNEDUniv

EXER 1. If a

with

____

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2. If a

forw

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RCISES

destination

h the frame?

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a frame is

ward/filter ta

__________

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n MAC add

?

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received o

able, what w

__________

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dress is not

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n a switch

will the swit

_________

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artment of Com

59

in the forw

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h port and

tch do?

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mputer & Inform

ward/filter t

__________

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the source

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mation Systems

table, what

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e MAC add

__________

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will the sw

__________

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EXER 1. Wha

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2. Whathe p____

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RCISES

at does trun__________

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artment of Com

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Documents

CCN_2012