CCIE R&S v5 Lab Troubleshooting Section

hey everyone welcome back to our video series here going over the CCIE version 5 lab exam now I already did a video about the generalizations of the lab exam meaning the what the 3 section is going to be timed as and I'll go back through them again and I've gone through and kind of talked about what you should bring to the testing center and all that kind of stuff and now let's actually take a dive into what our actual troubleshooting section is going to be like what it's going to look like and feel like so when you first sit down as I explained before you're going to have that icon on your desktop that says Internet Explorer icon that says lab exam and again I'm going to say it three times throughout all three videos the doc CD don't use it okay do not listen to any instructor that tells you to listen that tells you to go to the doc CD and this is not a shot against any instructor against any training company out there I'm trying to be as respectful as I can be I listened to all those folks that say don't worry you can just go to the doc CD and there were things that I just said well you know what rather than memorizing these 14 different commands and this particular technology I'll just go to the doc CD that's what they said they said just go to the doc see if you can't remember it don't worry just go to the doc CD well guess what I tried that it didn't work because the doc CD is incredibly slow and half the time isn't going to work and Cisco also likes to move around where the links are in the doc CD so you might watch a video tomorrow and somebody may be showing you here here's where this is in the doc CD and you may take your lab three weeks from now and where they showed you that is maybe in a completely different spot or it may be a broken link there's a lot of problems within the doc CD okay and Cisco's not going to support them in your lab exam so don't use the doc CD do yourself that favor great great instruction great training videos great material is going to be able to get you there the the training lab day is not the day you want to actually start training on a new technology lab day is not the day for you to be going in to the doc CD and trying to figure out how something works you want to that beforehand so we first sit down we're going to double click on that Internet Explorer icon that says lab exam right you're going to sign in again with that ID and password that's going to be on that piece of paper that's sitting on the keyboard when you first sit down at your workstation once you log in you're going to have this green button on your screen that says begin exam once you begin the exam it's going to open up to this screen that you see here behind me this screen is going to have your essential troubleshooting section behind you now this troubleshooting section as you see here is going to contain anywhere from as I said 20 to 30 routers and anywhere from let's say 8 to to 8 to 10 switches okay there was rumored that we could see a dozen but we haven't really seen that many it's more like 8 to 10 switches you might see a little bit less so if you see less good for you you're that guy but you see here that this is essentially the size of the troubleshooting topology that you're going to deal with I'm just going to scroll down just a little bit here to get as much of it in the screen as I can all right so this is essentially this huge network topology that you're dealing with in our particular network topology we have a Denver office we have a call center we have a regional office headquarters we have another call center down here there's multiple different locations and they're all tied together with some kind of ISP so we have these three ISP routers in the middle that are essentially connecting these offices together so this is going to be what your troubleshooting section is going to look like and feel like in your lab exam now the type of tickets you're going to have you're going to have two different types of tickets you're going to have tickets that that are isolated that are local to themselves so you may have a problem with in here let's say maybe NTP for example maybe you know this router here bb2 is not able to get its time from router 6 up here and so you're going to have that isolated ticket in there but you're also going to have a ticket that may say something like router 18 all the way over here cannot see the loopback address of router 6 and that's going to be you know this or maybe even the loopback address of BB 2 and even though you may solve an NTP ticket in here that might be local to itself meaning there's not really a lot you can mess up in that ntp ticket that's going to break this reach ability through this IP cloud there are however tickets that are going to be dependent on one another let me explain what I mean so you could have a ticket here that router 20 is not able to see router 17 so between these two different locations essentially and you see here that I'm running EIGRP in this area and I'm running OSPF in this area up here and so depending on how I fix these two tickets in other words depending on my solution for these two different tickets obviously one here and then one here I could also break reach ability from router 18 across these ISPs because I could maybe essentially tweak something in the ad GRP that brings down this adjacency here so we have to be careful and I'm just making some pretty simple pretty simple pretty easy examples here because I want you to just understand the concept obviously in the real lab the troubleshooting is going to be much much more difficult in in how they overlay these things how they cause you to break one ticket by manipulating another it's going to be much more complicated than that I'm giving you an easier example to essentially describe or explain what you should expect to see now in the menu in your lab exam so when you open up this Internet Explorer page you still have full desktop access so you'll still have the Start menu you'll still be able to minimize that Internet Explorer page I mean imagine you're on your laptop but your desktop and you open up whatever browser you use and you're looking at a webpage that's exactly the functionality of the lab so the lab is all contained within this Internet Explorer page now each one of these devices is going to be a hotspot so when you want to gain access to a particular device you're going to just simply click on that particular device I'm going to you know gain access to router seven I'm going to click on router seven it's going to pop my telnet client which by the way if you didn't watch the previous video is basically going to be the Windows command prompt it's not going to be a special version of part of your super putty or secure CRT you're not going to have tab to tell them that sessions it's going to be just a simple bare-bones version of the Windows command prompt ok so you're going to be pretty basic here now the one thing that's not in this particular screenshot you know before I get into this I want to mention that this Cisco does actually provide a live demo of this on their website through the the Cisco Learning Network and I don't remember the link I found it once it is a 30-minute demo of these sections but I don't know how many of you know it's there I found it that's why I'm recording this video because I'm also giving you I'm also giving you the information that's probably not shared on that video not that there's anything wrong with it but so you're going to have this timer here okay and this timer is going to say 2 hours and 30 minutes by default when it starts okay so this timer is going to start counting down from 2 hours and 30 minutes so please do not get confused when you see that you have 40 minutes left if you have not gotten that prompt that says well if you have 40 minutes you haven't gotten the prompt you actually do not have 40 minutes left you have 10 minutes left because once that timer hits 30 you're going to get this pop-up window right here that says hey you've reached your two hour time limit do you want to continue an extra 30 minutes yes or no you're going to have to select which one of these two options you want to pick if you say yes and you want to continue that extra 30 minute to remember that that 30 minutes comes out of your config section if you will say no then you will get the full five hours and config but do not forget that the timer automatically starts counting down from two hours and 30 minutes it does not start counting from two hours because it counts down so it does not start counting down from two hours and then gives you an extra 30 minutes by default it's going to start counting down from two hours and 30 minutes now across the top of your lab exam you're going to see a menu very very similar to what I have up here so you're going to have incidents all incidents or questions you're going to have important guidelines you're going to have manager devices help in settings and end session going backwards for a minute your end session pretty self-explanatory that's going to end your troubleshooting section don't click that unless you're done okay helping settings that's going to give you some helpful tips on how to navigate and how to go through some different screens okay so those are those last two tabs let's take a look at incidents here so I'm just going to scroll down to the next page here try to lined up good all right so when you click on incidence it's going to click it's going to provide a drop-down box for you that gives you the ten incidents that you're going to have now what I want to point out to you is notice in the background that the main diagram does not change the main diagram or the main lab exam in the background on that main page does not ever change it is always there it is always the same once you click incidents and it provides this drop-down box for you you're going to be able to click on any one of these incidents in any order that you want you can go back and forth this is not like our CCNA exam or our CCMP exams where once you were done you couldn't go back you can go back and forth it doesn't matter what order you do these in okay when you select a particular incident there will be a pop-up box or a pop-up window and Internet Explorer that will show you the incident it will just simply say incident one matching the incident you've opened and it will give you the amount of points that that incident is worth now in this window this diagram here is not clickable meaning you cannot click on these devices in here and pop that telnet session you have to minimize or close this pop-up window here go back to the main diagram in order to open those devices when this window pops up Cisco is very nice and they have given you what devices essentially you don't care about so what they're saying is hey in this particular incident this particular router is having reach ability problems or having a particular technology problem and this area here is where we want you to concentrate your efforts this area here is where the problem is ignore everything else in here it doesn't matter so cisco has been very nice to us in giving us that that that this grayed out or shaded area okay now when we're in our lab what we need to realize when we need to focus on is you guys may not be able to read it very clearly but cisco is going to give us essentially what they want here in the ticket they're going to say that they're going to say that when you run this command it should work so here it's saying hey when we run a TFTP command we should see that we're actually able to be our configuration alright so not not very difficult output to match here but essentially Cisco is going to give you in every ticket what you should be able to do in other words what they want to see actually working you have to be very very detailed in what they asked you to get working if they ask you to get something working exactly like this and they give you an output that has let's say OSPF and you look at a specific prefix in OSPF and it's got a specific metric or administrative distance or something on that particular prefix you had better make sure that you match it if you go and you look at your OSPF database and certain routes are coming in as certain LSA types and you know you have to make sure that you match the output identically you cannot move on unless it's matching perfectly you will not get the points for that ticket unless it's matching perfectly now there's some caveats to that obviously I'm not going to be able to manage my uptime and bgp when I say when I look at my BGP neighbors and Cisco knows that but you're going to need to match the amount of prefixes that you're getting for example okay so you're going to have to match this so this is an example ticket that we're going to have under the incidence now each one of these tickets is going to be worth a certain number of points so we're going to have two points two points four points two points two points four points and the rest are going to be all twos all right so you're going to have ten tickets total you're going to have two of them before points so I'm going to write right here I'm going to say two are going to be four pointers and the rest eight of them are going to be two pointers okay this gives us a total of 24 points okay now cisco has not revealed to anybody what the math is here in other words what's the minimum score that you can get to pass so how I've worked this out is that we can get minus 1/4 pointer or two two pointers and still pass if you get less than that it's going to get a little bit iffy so what I would recommend to you is don't go in there with the minimum mindset don't go in saying I'm going to get the bare minimum I'm just going to make sure that I get eight tickets and I'll pass now go in there with the mindset that you're going to pass all ten tickets that you're going to get through this thing you're a CCI you're going to you're you're going to throw this exam a beating okay so don't go in there with the minimum mindset with the mindset of a while what's the minimum tickets I can get to pass if you go in there with that mindset you're already failing okay so once you click on incidents it will bring up the ticket then you can minimize this and you can go back to your main topology exam up here you can click on any one of these devices in here and then you can go ahead and you can solve that ticket when you're done with that ticket every ticket that you're done you should write your configurations before you move on because you don't know what next ticket is going to be dependent on that ticket you just solve then you could mess it up you don't want to lose the points for the ticket you've already solved and so you want to be able to essentially just reload that router which you can do and bring back your working ticket next after the incidence button we're going to have what we call the all questions of the all incidents sorry for the scroll there I just want to get it lined up so we're going to have the all incidents or the all questions that is essentially going to give you all of the incidents laid out in one long page all right so you're going to be able to get some idea of how these incidents are all going to relate to one another so that is an option that you can have in order to kind of get your bearings kind of get what ticket am I going to solve first or am I going to look at first okay now what I would I did when I took this exam is let's say that in this in this topology here I had to deal with all of these devices I opened up all of the devices in the telnet sessions in order so I went switch seven switch eight then I went router sixteen seventeen eighteen and twenty so that all of my devices were open in numerical order that way it was easier for me to just find and hone in on those devices because if I'm troubleshooting a reach ability problem between BB to switch to router six router three is P 1 2 3 and then router 18 and essentially throughout the rest of this network I don't want to have all these things in random order I want to try to have them in some kind of order where it's easy for me to just hone in on that exact talonnet session that I'm looking for or you can just close it when you're done or when you've looked at something and you don't believe it's the problem you can do that as well under the troubleshooting I'm sorry under the important troubleshooting and guidelines here is where I like to call this the don't be stupid message right here is a direct quote from that video I said that that cisco has on their Learning Network website this essentially says do not remove any feature that is configured in order to resolve an incident you must resolve the Miss configuration rather than removing it cisco has put in things to purposely break your network topology to break that particular ticket they don't want you just going in there and ripping out random things they want you to actually fix what's broken let me explain let's say hypothetically speaking I'm not getting a BGP peering between two adjacent routers and I go on to that interface and I see that there's an access list applied that's blocking port 179 now we're not going to get into all the technicalities of that just hypothetically speaking right so I have an access list that says ACL one deny BGP and then I have any then the next line says ACL one permit any any the wrong way to fix that would be to just remove the deny statement leaving access list one permit any any that would be the wrong way to fix it the right way to fix it would be to remove the access list to say access list one permit BGP and then access list one permit any-any now doesn't make any sense for the real world no not at all but cisco wants to ensure that you can actually fix the individual problem or the actual issue of what's broken they don't want you to just go in and rip it out now do I expect you're going to see an access that's like that no not at all because again it doesn't make any sense I'm using that access list to illustrate to you the fact that you need to actually fix the problem so if there is an access list applied to an interface and that's what's breaking or causing the problem that's what's breaking the technology you cannot just remove the access list you have to fix it all right so you're going to have to know for example what ports need to traverse that access list so you may need to set up some kind of logging to figure it out you're going to have to be able to fix that ACL this is how we solve these tickets and again Cisco's given you this bullet point right here don't remove anything you have to actually fix the problem okay but that's going to be found in your important troubleshooting and guidelines manage devices manage devices this tab here is going to be where you can actually essentially control your gear control your devices so you're going to have all of your devices listed in your topology those are you guys that are familiar with our proctor labs website you can tell this is just almost a print screen from that and it so in the manage devices website you're going to be able to console into all of your gear at once so if you don't want to click on the hot spots that are in this background diagram here so if I don't want to go and click on every single one of these and go you know what this will do is this will actually put it out in numerical order for me so I can just go down the line and click on console click on console if I have a problem with a device and I need to power cycle it I can go into manage devices I can click power cycle this is also where it's going to tell me whether those devices are powered on or off the last thing I can do is I can say clear lines so if I lose connection randomly to that device I can go in and say I want to clear the telnet line to that device so that I can get back into it the one thing that you're not going to have is the revert option so if you mess up your labs so bad to the point of viewer there's no recovery you are not at least last time when I took my lab they may have added it but you are not going to have a revert option to essentially say I want to bring my whole lab back to where it was before that is not an option for you so you want to make sure that you take the precautions to be able to bring back those devices should you mess them up to that point of no recovery all right but overall this is going to be your troubleshooting section again two and a half hours every one of these is going to be your hotspot this is going to be done in Internet Explorer just exactly how you see it behind me here is very very similar to how that page is going to be laid out all right the topology between troubleshooting and configuration is different so you are not going to have the same topology that you see here in your configuration section you'll have the same device types the same device names you'll have maybe a topology that's somewhat similar because remember we're testing the same technologies right we're still looking at MP BGP layer 3 VPN we're still looking at dmvpn but they're going to be laid out differently which by the way brings you to my last tip if you're troubleshooting a technology in the troubleshooting lat in the troubleshooting section and you get it fixed you get it working let's say it's dmvpn it's kind of my favorite to pick on you get the dmvpn working ok regardless whether you know how to do a DV peon or not regardless whether it's something you struggle with you're fantastic at let's face it nobody wants to type a dozen commands three or four different times you can take the running configuration from that VPN configuration in the troubleshooting section copy it off to notepad and leave it there so that when you get to your config section all you need to do is tweak that that template that you took in and essentially saved from troubleshooting all you need to do is tweak it to the specifications required in your config section Cisco will allow you to do that because it still shows that you know what you're doing so that's your helpful tip I hope this video this video was informative and I'll see you in the diag section

Channel: IPexpertInc

Views: 35,715

Rating: 4.8909092 out of 5

Keywords: CCIE R&S, CCIE Routing and Switching, CCIE R&S Lab, CCIE Routing and Switching Lab, CCIE Routing & Switching, CCIE Routing & Switching Lab, CCIE R&S Lab Diagnostics Section, CCIE R&S Lab Troubleshooting Section, JP Cedeno, iPexpert, CCIE Success, Pass the CCIE Lab, CCIE Certification

Id: MCWVYz5aHs0

Length: 20min 33sec (1233 seconds)

Published: Tue Nov 24 2015