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12.6.2 Packet Tracer - Troubleshooting Challenge - Use Documentation to Solve Issues @joy77772

By Shi Liu

Summary

## Key takeaways - **Missing NAT on HQ Router**: Branch one router's S0/0/0 interface lacks 'ip nat inside', preventing PC1 from pinging internet server. Fixed by adding 'ip nat inside' on interface S0/0/0. [09:31], [09:51] - **Factory G0/0/1 Shutdown**: Factory router's G0/0/1 interface is administratively down, blocking PC3 connectivity. Activated with 'no shutdown'. [13:31], [14:36] - **Missing OSPF Network Factory**: Factory router OSPF misses network 192.168.4.0/24, causing routing failure to PC3. Added 'network 192.168.4.0 0.0.0.255 area 0'. [14:13], [15:01] - **PC5 Lacks Default Gateway**: PC5 has no default gateway configured, so cannot reach beyond local network. Added 192.168.5.129 as default gateway. [19:53], [20:03] - **Branch2 S0/0/0 Wrong IP**: Branch2 router's S0/0/0 has incorrect IP 192.168.0.17 instead of 0.6/30, affecting PC6 and PC7. Corrected to 192.168.0.6 255.255.255.252. [25:12], [25:36]

Topics Covered

  • Missing NAT blocks internet
  • Down interface severs Factory
  • Missing OSPF hides networks
  • No default gateway isolates PC
  • Wrong IP severs branch PCs

Full Transcript

hello everyone today we are going to do a package service using A3 version 7 12.6.2 Pack 3 is a troubleshooting challenge use documentation to solve

issues here's the documentation is we created in the last packages activity here's the documentation all right

so in this activity you will use the documentation that you created in the pack switcher troubleshooting challenge document to the network activity to

Guide Network troubleshoot efforts troubleshoot efforts this is the today's package activity

and the password for all devices vty Cisco enable secret class all hosts should be able to Ping each

other and the internet server here's all hosts and the internet servers here determine if this requirement is met if

not identify which hosts and the networks should be further investigated from the host which have communicate

problems use icmp tools to determine where in the network these problems may be located from the host the PCS access devices in

the network and the display configurations and operational status all locations are all after locating the issues

reconfigure the devices used to repair the connectivity problem use your documentation from the previous activity to help you document the issues all

right so here's the device device is where the issue is located issue is problems

actions is which action we need to take to solve the issues all right so I'm going to use

when window split as usual okay we are going to use the information from this documentation okay

and record this issue so let's paint from pc1 to PC2

PC2 IP address is here 3.50 so this private services are the pro the first number first two numbers

are the same 192 168. the difference is the last two numbers are different so 192 168 PC2 is 3.50 let's see the p

s success no problem so p p c 3 PC3 is for the one one five four one one five

all right looks looks Network right okay so let's it's fair so let's record to here all right

and the P PC pc4 pc4 is 5.83 .

pc4 it's full of success we get p in pc5 pc5 is 2.22 a 5.227

5.2 to the seven five so fail okay fail all right it's a recorder here the problem

okay and pc6 pc6 is 2.48 all right it's a fail okay this pain pc7

gc7 is 2.67.

to the 67.

nukes fail as well foreign to here all right so last we p

server server is here 203.

203.0.113.27 this p internet server it's on internet okay so fail as well

all right so here's a problem so let's uh but also we're going to use the topology we created in the last pack twister here

right to as a reference pc1 to PC3 okay let's use the T-shirt to see where the issue is located

three three thirds okay here PC3 is for the 192 168 4.115

now we look at this topology the two hops one cup is a one router so go through

two hops so two routers from pc1 to PC3 go to first Hobbies Branch one second is ha

signal hop is Hub writer or router hover router okay so here let's stop here all right so

let's turn it to the second router is Hub to see what's a problem it's axis

192 168.0.1 Cisco enable class all right so show IP interface Gray

brief all right so there are totally five interfaces are used one two three four five yeah up up up all right so no problem

here let's go to show wrong to see each interface configuration

okay Branch one is to PC one okay let's see here Branch one

Branch 2 HQ yeah all these interfaces has IP and 80 inter inside so because

these routers are like a translation translate to the private IP address to public public address so but here Branch one

the interface doesn't have the IP and 80 inside so that's why pc1 cannot pin internet server

all right so let's fix it so configure terminal interface interface

it's a zero one zero it's zero one zero IP and 80 inside [Music]

okay so let's exit all right exit to Ping pin server p203.0.113.27 that is server's ipg

success good good so here pieces

Ping Server success so our problem solved this one all right so the problem is on the Hub

all right probably is on the Hub huh router okay and the s010 um

need IP and 80.

inside so action we take action is ADD IP and a t huh

Y is like that so add inside um S zero one zero interface okay

we solve this problem but I still need to which do need to find the pc3's problem okay so

we go to donate to Harbor okay Cisco enable class

so there's no other problem I don't see any other problem here all right so let's look at topology

so go here you should go to factory and Factory let's turn it to factory from Hub to tone it

turnit Factory is this 182168.0.14 okay

that is IP address for factory 192 168.0.14 Cisco Factory yes class

all right let's show IP interface Brave I always start from here yeah there are three interfaces are in use these three interfaces but this

interface g001 is administratively down okay sure wrong we can find g001 okay here which is our

one shutdown all right so this is another problem Factory and the

Factory g001 and ospf okay networks how many Networks Factor has three networks connected but

here's only two once the three three dot zero is here 0.12 is this link

but this network missing so we find the two problems one is g001 interface is down another is ospf

Network missing this network okay let's fix it configure terminal interface g001

we need to activate it so no shutdown all right another is

router okay router ospf 10.

Network at the network network is here this one 4.0 so 192 168 4.0

24 we need here needed Wild Card mask slash 24 Wild Card mask is zero zero

zero dot two five five and area zero okay okay let's go back to

there's no other problem now right no other problem I don't see shut down all right so let's go back to PC

pc1 to pin piece PC3 PC threes uh PC3 is 4.115

for the one of five let's ping this time okay success good so this problem we solved this problem we solved

all right so the problem is we find it 2 is on the factory Factory router Factory router one is G 0 0 1 interface

is down okay activate g001 interface okay no shutdown

another is is what is [Music] 1 ospf for Network

192 168 4.0 missing what we need to do is add this happen again foreign all right

okay so add Network 182 168 4.0

and zero zero zero dot two five five area zero we solve this problem okay next step we need to

pc1 to pc5 from pc1 to pc5 let's look at the topology because you want to pc5 pc5 is here

okay now looks like a this side this network is no problem now let's try to pc5 from pc5 to axis

so from pc5 to p um default gateway and let's go to

ipconfig AP configured to pc5s IP addresses here we default oh no default gateway here

all right no D4 Gateway so what's 5 pc5 is a default gateway is 5.129

all right so let's add two yeah here's the zero zero zero so it's 192 168 5.129

[Music] to here 25 all right so go here

let's go try again okay come out this default gateway come out pc5 yeah

all right so Let's uh let's paint let's paint PC

one to pc5 pc5 p C5 is 192. 168 5.

one two two seven success good good and let's pay internet from PC file p internet is

203.0.113.27 that is internet service IP address success right okay good so we solve the problem um

solve the problem so 5 is done [Music] all right the problem is five on pc5

is a pc5 has no Def of default gateway

IPL choice don't have default gateway all right add a default gateway 182168.5 the 29

um pc5 all right so we added this

and six and seven let's look at topology six and seven in this network they connected to Branch 2 router okay

let's go from from pc6 okay pc6 this pin pc6

pc62 ipconfig all right this is the G4 cable it's access to here to see if we campaign success okay so let's

turn it Cisco Cisco enable class

all right social IP interface Brave okay four four interfaces are in use

okay three sub interface no problem the shoe run to say interface okay

here's a does one IP address.32. this is IP address okay

address.32. this is IP address okay is correct 20 32 30 33 s010 is here

17 oh here is problem this is 17 but here is it does six all right so let's uh

let's check it's all right so configure terminal IP address so 192 168.0.6

or something mask is slash 30 is 255.255.255.252 IP on oh no sorry interface okay s010

IP address 192 168.0.6 255.255.25.252 all right let's um okay so let's pin

internet let's pay Internet it's 203.0.113.27 success Goods all right

and the PC one pin PC a six pin pc6 let me see pc6 is

to the 48 .

12.48 success good good all right so and

we add another one that is on the router branch branch to router okay the problem is

in correct IP address um as zero

one zero let's correct it s problem happen again all right let's fix it correct [Music]

um IP address is 192 and 68 0.6

5.255.255.252 all right so let's look at topology again here this is

the problem is here so that's why pc7 pc7 probably is the same problem as pc6 let's try pc7 I think

because this interface can influence both pc6 and pc7 this pmpc7 to see if so 2.67

P 192 62.67.

one yeah success good good good and let's pay internet

this pin internet is Success this is from pc7 p internet is 203.0.113-27

success all right so PC2 p internet okay 203.0.113-27 success

before p internet 2013-27 successor success good good

and so this problem PC so these two problems we solved yeah okay hold on

all right so here okay all right so we solve all the problems and we figure out um the problem location and what the

problem is and we take action already so now I remove the split so you can see here's our

here's our problem and here's our solution all right thank you for watching my video because we let's look at here

yeah completion is 100 percent completions 100 percent all right so we perfect perfectly finish this package so use documentation to

solve issues thank you for watching my video if you like my video please Thumbs Up And subscribe my channel and share with your friends see you next time

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