17.7.6 Lab - Troubleshoot Connectivity Issues

to be should connectivity issue s buildings topology PCA as Wang are one for the 3:21 rather is be the internet and connect the devices gigabit zero zero zero between routers you gotta be 203 one between r1 and as well almost one connect to force at the node five from first time at six on the switch to PCA here is there is an external server Tornai 165 200 226 this is 192 168 1 10/1/82 168 1 2 this is 10110 particularly this network is the company love local area network when I 260 a10 prefix 24 this is one this another is 1 and this is 2 and this is Internet okay the other Racine table configure PCI with IP address and subnet mask IP others when I to 160 a 110 subnet mask 255 255 255 0 and that's it required resources on real lab two routers Cisco 42 21 one switch 2960 one PC console cables internet cables to be shooting configuration the following cities must be configure it and the device is shown in the topology based their configurations and the specified devices prior to starting the lab ok copy this to a notepad I prefer that copy notepad paste and this is that configuration for us one OK from PCA using console cable from rs-232 access the console port as one go to PCA go to terminal ok under enable configure terminal ok should be global configuration mode copy this and paste and enter ok review the configurations ok no problems no issues ok very good this is the configuration on r1 this is the configuration r1 change the console to r1 console port go to PCA close the terminal open again ok we'd like to other initial configuration node under enable configure terminal global configuration mode and copied is pasted under review the configurations very good very good and on gigabit 0:01 non-negotiation router is not supported by packet tracer ok don't worry about this I will explain later ok I will explain the problem with this but later ok any other configurations very welcome here but problem finally this is the ISP configuration change the console port to port on console port on SP from pca terminal cause the terminal open the terminal again okay now enter in a word configure terminal global configuration mode copy this and paste enter enter okay review no issue is very good okay and now from PCI 3 from BCA beef as 1 1 H 1 6 EI 1 to s 1 1 night 2 1 6 EI 1 2 ok but use command prompt in 192 168 1 2 they pink-faced identify the problem through we shoot the network document the probable causes implement network changes and verify full functionality document finding same configuration changes okay pink faith - as one and now review the [Music] review pc a configuration IP config and IP address on pc i is when I join 60 a 110 subnet mask 255 255 255 0 APL 181 CCA 110 subnet mask 255 255 255 0 this is enough to paint as one if this is very well configured if PCA is very well configured now reveal the configuration of s1 and use a console obviously I will not use SSH to access this one but I don't have connectivity to as one okay so that's why I'm using console and on PC a closed common problem open terminal ok enter show IP interface brief enter and belong 1 when it wants you see a 1 - very good it's administratively down ok so in this case to fix that to fix this it's necessary no shutdown comment on villain one configure terminal interface vlan1 not shut up okay now and and on really maybe you don't need to do this okay little pocket racer is necessary revealed a show IP interface brief belong one stayed up protocol up I'm very good close the terminal open command prompt and try to ping ping from PCI to s1 again enter success now try to be be zero zero one on our one gigabit zero zero one one are one thing is 1 I 2 and 60 a 1-1 pc8 one night 168 one okay and bean fails request timeout and why the pink face because this link is in red this link is disconnected you can see now red triangles so that's me that's what so this link is disconnected and you need to fix that the problem is our one on gigabit zero zero one or maybe the problem is for settlement 5o as one okay or maybe on both sides okay first review as one go to PCA close the common problem open the terminal to use the console and show IP interface brief and for settle at five status is down and protocol is down okay if the status is administratively down you can fix this using the non shutdown comment but in this case is only down but you need to use another method and review show interface the specific interface for settle at five so interface was another five down protocol down encapsulation our bar very good hard duplex ok I think this should be full duplex so this is the problem and 10 megabits per second and I think this should be at least 100 megabits per second ok another big space another way to to build these is using show running coffee show running faucet them at 5:00 duplex is configured too hard and the speed is configured to time so modify this on fazilet file space space configure terminal interface for sentiment file okay you can change this to duplex full but also you can use duplex out for Auto config which I prefer out okay enter and for a speed you can set this to 100 okay now it's configurate for 10 megabits per second and change to 100 megabits per second but also you can use the default configuration that is automatic and just now a speed for automatic configuration enter and now you can see the change stay to up line protocol up and now the the port facility I've on as one is learning okay and the link wait a moment and the link will be green okay now green triangles so that is very good and unverified so IP n interface brief for certain at 5:00 start to saw protocol up show interface for set them at 5 full duplex 100 megabits per second very good okay now the link is very good but anyway reveal the another side gigabit zero zero one on our one change the console to our one console port close the terminal open the terminal gained okay enter enable show IP interface brief ok is gigabit 0 0 1 on our one gigabit 0 0 1 status operable up show interface interface little bit zero zero one okay full duplex 100 megabits per second and finally review you seen show running config gigabit zero zero one duplex outdoor and speed is to 100 but I prefer a speed to auto to speed to auto configuration okay configure terminal interface you have it zero zero wrong now speed okay - no space speed for a speed auto configuration enter and remember this comment no negotiation Auto on gigabit zero zero zero ok this comment non-negotiation out on will not permit the auto configuration on this interface on kilobit zero zero zero but you need to configure this to negotiation out instead of no negotiation auto configure negotiation and gigabit zero zero one okay obviously this command was not supported on pocket racer but real lab do you need to fix this and use out negotiation out okay after okay okay tracer does not support this comment but in real lab you need to do this okay and now review and show running country gigabit 0:01 duplex auto speed out very good okay and now from pca pink be 0 0 1 on our one gigabit 0 0 1 1 1 1 i2 and 68 1 1 DC a close this color brown pink one night 168 1 1 other success ok before request timeout after success and now pink b200 omar 110 1 1 1 ok beat 0 0 0 1 10111 enter Cape in fact a request timeout okay review gigabit zero zero zero on our one low to BC a close common problem open terminal show IP interface brief gigabit zero zero zero 10111 status all protocol table show running coffee gigabit 0 0 0 IP otherwise met bass very well configure a blue blocks out the spit out a very good and now if this is very well configurate maybe the problem is on pca and go to close the terminal open command prompt IP config PCA does not have default gateway okay PCA doesn't have a default bedroom ok IP address and subnet mask are enough to paint to have connectivity or local area network on this gray section but it's not possible to pink and other networks like internet and remote networks ok so so that's why you need default gateway because the for gateway permits the access to another networks ok on PCI a configure default gateway 192 168 1 1 1 8 3 168 1 comma prompt try the pink again and now success being here a bit zero zero zero home as ISP is to only his P gigabit 0 0 0 10 1 1 2 PCI being 10 1 1 to success now pink the external server to and I was mystified 202 26 okay is the loopback interface on an ISP two or nine 165 200 236 pain 209 165 200 226 destination host unreachable pink fails okay and the answer is from the reply is from 180 to 160 a11 and who is 182 168 1 1 is the gigabit 0 0 1 on our one so the problem is on our one okay review the using the console review the configuration 1 r1 go to PCA close command prompt open terminal ok and enter on line 1 verify you are on r1 show IP route sorry show space IP route and you have to directly connected networks this network will letter C that is connected is 10110 perfect fuelie 10110 prefix theory and the another subnet another network directly connected network with letters in one night when sta 1 0 / fixed 24 when I 268 once here over fix 24 - directly connected levels so art one knows the presence of two directly connected metals okay but our one doesn't know how to reach another networks how to reach Internet our one doesn't know how to reach external networks okay and you need to configure a route okay configure the faulty static route on our one to reach Internet and external networks okay don't fill your terminal type the default static route and is better to use the next hop IP address for our one the not swap IP address is this the IP others of gigabit zero zero zero on my SP and is 10 1 1 2 ok 10 one to enter and shall I period and now you have a default the static route to reach another networks like internet and external server ok go to PCA close the terminal open command prompt and try to beef again to external server and now success from as well they go to console office one console go to PC a close comma prom open terminal enter now you are on as well enable enter ok from s1 pink are one pink gigabit 0 0 1 or nor 1 gigabit 0 0 1 1 82 and 68 1 1 when I to 168 1 great success being Giga be zero zero zero on Marwan zero zero zero one 10111 being okay success rate is zero percent gay and pink face okay obviously this is an external network so maybe on as one you need to configure the four gateway show running config you have an IP address the default gateway is 182 and 60 a 1-0 with the default gateway for s1 is chickabee 0 0 1 or 1 gigabit 0 0 or 1 you know B 0 0 1 or nor 1 is 192 168 1 1 it should be 182 168 1 1 so modify this always 1 change the default gateway configure terminal IP the Gateway when I to 160 a a11 ok and show running config to verify now when I to 160 a 1 1 very well configure it and now try to pink 10111 success try to ping Chang 1 1 and to success pink external server into unknown and 65 200 226 success very good and finally go to console of r1 cloves terminal open terminal again ok now you are on our one enter and being in gigabit 0 0 0 ISP 10 1 1 2 3 1 1 2 subsets pink external server in to my 160 165 200 226 success now all is working very well document the probable causes okay one the default that way was not said on PC PCI to as one interface for settlement five is said to hard duplex and speed to 10 megabits per second 3-hour one gigabit zero zero one speed was said to 100 megabits per second and how the negotiation was disabled for the Gateway of life resort was not said under-15 as one default gateway was said to 182 and 60 a 1:06 interface vlan1 on as one was disabled was shut down this lab had you to be should all devices before making any changes is there another way to apply that to be shooting methodology yes there is another way to do the troubleshooting if you can find issuing or if you can find a problem try to fix the problem immediately then go to to find the next problem go to find the next issue then try to fix it immediately and so on thank you very much

Channel: Christian Augusto Romero Goyzueta

Views: 9,420

Keywords: cisco, itn, introduction to networks, v7.0, version 7.0, version 7, ipv4, ping, troubleshoot

Id: bAvk4-w3f6g

Length: 30min 37sec (1837 seconds)

Published: Fri Jun 05 2020