2. In thisnetwork,Iplanon usingthe private IPspace to it'smaximumefficiency.Inoticedwe
Have a total of 140 pc hosts with3 Routerinterface with3 switches,creatingatotal of 140+6 or more
IP addresses.
Planfor B1 : 80 hostsare neededusingclassCsubnet.
2^6 < 80 < 2^7 where lastoctet2^7 = 128
We can give B1 7 bitsfor host,leaving1bitfor subnet. mask= 255.255.255.128
Leavinguswithhostaddressspace ( 192.168.1.1 - 192.168.1.126 )
Subnet(192.168.1.0) withBroadcast (192.168.1.127)
Planfor B2
20 hostsneeded. 2^4 < 20 < 2^5
5 hostbitswith3 subnetbits. mask= 255.255.255.224
Hosts ' cannot be "lastoctet" = ( 1-127 ) 192.168.1.128 = new subnetforB2
Hosts :128 +32 = 160 hostaddressrange ( 192.168.1.129 - 192.168.1.160 )
Subnet(128) withbroadcastat (159)
Planfor HQ
40 hosts need2^6 = 64
At-least6bitsare neededforhostaddress,leaving2bitsfor subnet
Mask = 255.255.255.192
Host addresscannotoccupy previousdesignsforB1and B2
( 192.168.1.0 to 192.168.1.160 )
Start addresshasto be multiple of 64= 192.168.1.192
Host addressrange ( 192.168.1.193 - 192.168.1.254 )
Broadcast address= 192.168.1.255
3. Note that Addressspace 160 – 192 are notin use ( Reserve serial interfaces)
• Afterthe addresseshave beendeterminedforall the LAN subnets,assignthe firstavailableaddress
space to the WAN linkbetweenB1and HQ.assignaddressspace tothe WAN linkbetweenHQandB2.
NETWORK192.168.1.164/30 CIDR30 = 255.255.255.252 2 hostsper network
broadcast= 192.168.1.167 nextnetwork=192.168.1.168 w/broadcast at 192.168.1.171
Serial interface HQ= s2/0 192.168.1.165 ; s3/0 192.168.1.169 255.255.255.252
*I didnot use the firstavailable ipaddresswhichwas..161.. Inlast octet..* note
B1= s2/0 192.168.1.166 at HQ s2/0 192.168.1.166
B2= s3/0 192.168.1.170 at HQ s3/0 192.168.1.169
Device Interface IP address Subnet Mask Default GW
Fa0/0 192.168.1.193 255.255.255.192 Routerinterface
HQ S2/0 192.168.1.165 255.255.255.252 Routerinterface
S3/0 192.168.1.169 255.255.255.252 Routerinterface
B1 Fa0/0 192.168.1.1 255.255.255.128 Routerinterface
S2/0 192.168.1.166 255.255.255.252 Routerinterface
B2 Fa0/0 192.168.1.129 255.255.255.224 Routerinterface
S3/0 192.168.1.170 255.255.255.252 Routerinterface
PC0 NIC 192.168.1.2 - 126 255.255.255.128 192.168.1.1
PC1 NIC 192.168.1.194 -
254
255.255.255.192 192.168.1.193
PC2 NIC 192.168.1.130
- 158
255.255.255.128 192.168.1.129
Step2:
Documentthe addressingscheme.•Use the blankspaceson the topologytorecord the network
addressesindotted-decimal/slashformat.•Use the table providedinthe printedinstructionsto
documentthe IPaddresses,subnetmasksanddefaultgatewayaddresses. Forthe LANs,assignthe first
IP addresstothe router interface.Assignthe lastIPaddresstothe PC Forthe WAN links,assignthe first
IP addresstoHQ.
4. Task 2: Selectequipmentandcable devices.
Step1: Selectthe necessaryequipment.Selectthe remainingdevicesyouwillneedandadd
themto the workingspace inside PacketTracer.Use the labelsasa guide asto where toplace
the devices.
Step2: Finishcablingthe devices.Cablethe networksaccordingtothe topologytakingcare that
interfacesmatchyourdocumentationinTask1.
Task 3: Applyabasic configuration.
Step1: Configure the routers.Usingyourdocumentation,configure the routerswithbasic
configurationsincludingaddressing.Use ciscoasthe line passwordsandclassas the secret
password.Use 64000 as the clockrate.
Step2: Configure the PCs.Usingyourdocumentation,configure the PCswithanIPaddress,
subnetmask,anddefaultgateway.
Task
Packet Tracer Simulation
( after configuration )
5. Configuring Router HQ
NOTE AND IGNORE THE SERIAL INTERFACE* THEY HAVE BEEN PROPERLY ASSIGNED IN THE REAL PACKET
TRACER ! ***
Simplyconfigure RouterHQwithbasichostname,banner,password.Also,configure fastethernet
interface withipaddressIcalculatedattable.Make sure the interface isinnoshutdownmode.We can
see that the linkstate isgreen.
6. This portion of the command line, I configured the serial interfaces for the WAN port and also synced
withthe DCE clock rate of 64000, as documentedby the lab requirements for part 2. Also made sure to
configure each interface to no shutdown. Last but not least, made sure to copy the running config to
start-up config so the router will boot with the configuration changes.
* also forgot to enable secret class on configuration settings
Copy running-config to startup-config and reload the router
11. Notice that the DCE interface did not show message when configuring clock rate. This is most likely
because I connected the B1 router to supply clock rate to Router HQ through the serial interface.
Configure Router B2
After configuring B2, this is the show run status
13. I noticed that the link for s3/0 was not configured properly after I entered no shutdown command for
s2/0 on B2.
Fix
After assigning s3/0 on router HQ with IP address, clock rate and no shutdown . I was able to achieve
connection green.
Packet Tracer Simulation Network
14. Take notice here that all the links are green, meaning that the link state are in UP state, However for
the next portion of this lab i noticed that I have no layer 3 connectivity between the WAN links; this is
mostlikely due to packet tracer lab 1.6.1 assumption that the RIP protocol is administered by default.
This is not true for for this situation, I will have to enable RIP protocol.
Assign RIP v 2 for router B1 / B2 / HQ
15. Task 4: Test connectivity and examine the configuration.
In the last step
I troubleshootedthe networkwithaseriesof pingrequestfromthe hostsineachsubnet.
HOST to defaultgateway, hosttonextrouteronhop and hostto host connectivity.
I noticedthatI didnot have connectivitybetweenroutertorouterandhost past the defaultgateway.
I knewthatthe problemhadtobe onthe routerconfiguration.
16. Packettracer 1.6.1 labassumesthat ripv 2 isa protocal that hasalreadybeenpreconfigured.Inmy
case,configuringthe Packettracerfromscratch, it has notbeenconfigured.
aftertroubleshootingthe ripprotocal,i noticedthatthe routingtable didnothave the rip v2 update.
17. so to enable the update i hadto assignthe networkvalue tocommunicate the update.
IOS TERMINAL
we can see that RIPv2 didnotexchange routingupdates
I DID THIS FOR ALL ROUTERS ON THE NETWORK ANDACHIEVEDFULL CONNECTIVITY
Assignroutingripv 2 withthe networkto exchange update information
aftertroubleshootingi have full connectivitybetweenall hostfrom192.168.1.126
18.
19.
20. ALL HOSTS ACROSSTHE NETWORKCAN BE PINGEDFROM192.168.1.126
CONCLUSION:
I have completedthe packettracer1.6.1 lab.In thislabI have implementedthe subnettheoryand
routingprotocal to communicate informationacrossnetworktopology.Ihave constructedasimulation
to testand troubleshootconnectivity.Ihave successfulyusedthe troubleshootingprocedure to
complete all linkfailures.Ilearnedhowtodesignroutertorouternetworkdesignandsubnet
implementation.
