Edited HSRP Quiz Recording | Cisco CCNA 200-301

[Music] and welcome welcome to this quiz on hsrp so glad you're here if you're here for the live event awesome it's good to meet you good to see you and if you are watching the recorded version of this please enjoy it the entire playlist is here on youtube for your benefit it is free of charge and very very useful so without further ado let's take a look at this quiz good luck everybody uh this kahoot is on hot standby router protocol to provide fault tolerance a fault tolerant default gateway for our users and here's the first question of 13 with hsrp which ip address is used for the client's default gateway with hsrp which ip is used for the client's default gateway is the hsrp virtual ip address and right i had this come up a little bit slow but here it is this this let's take a moment this is going to help with every almost every other question we have coming up so a little bit of tutoring here is going to be amazing for us so this is the command show standby and i limit it to just one interface but you can just do show standby it'll show all the standby groups that are participating this is the virtual ip address right here and so the clients would point to that as their default gateway now most effectively we'd probably use dhcp hand out the default gateway and what we do is we'd hand out this ip address for clients to use as a default gateway and that's what's giving us fault tolerance also in this output it has the it shows us that this state is standby which means that this router interface is the standby it's not the active router there's one active one standby and anybody else who's part of that group is backing those guys up so this is the standby router here is the virtual mac address that's being used for version one of hsrp version two has a different mac address uh the last letter here the a that's a and hex which really represents 10 this is group 10. um let's see what else is here that's important this shows us that preemption is enabled what that means is that if this router shows up one day for work on this network the one that gig00.10 is connected to and it sees that somebody else has a priority of 104 and this router on this interface has a priority of 106 pre-amp says take it over baby do a coup you're going to send a coup message and say hey my priority is better i need to go ahead and take over the activeroll and that's what preamp does it doesn't it's not courteous without preemption enabled if this router joins and it has a higher priority than somebody else who's already active it says no no no i'm not going to take your spot you just go ahead and do that you be you uh and then this is also showing us the active router is at this ip address and the active router has a priority of 108 while we have a priority of 106 and that's why that device is active he's got a higher priority all right let me clear that off and as i mentioned that's points that's points in the bag coming up that short tutorial there on reading this output uh if you picked up any parts of that it's going to help you as we continue it's also going to help you in troubleshooting hsrp uh when you get to that point in your career where you're looking at it and you need to troubleshoot it or if you're taking certification and they ask you something about hsrp uh you're gonna be a lot better off it's a win-win-win-win-win nimble giraffe first place all right that's my first question here's question 2 of 13 it is multiple select i'm looking for two answers based on this output which two answers are true all right it's a stepping stone i love this check it out and that's interesting let's take a look at the output and discuss it for a moment this is a show run for this interface it is a sub interface this 10 here encapsulation.1 q10 means that this sub interface is supporting vlan 10 so if that's one of our answers that's true we're supporting vlan 10. we also happen to have an hsrp group for 10 which is beside the point you can use any number you want for standby it doesn't have to match the vlan number but the sub interface matches the vlan itself the vlan tag on the trunk matches and this matches but they don't none of those those three don't have to match we could use sub interface 12 we could use hsrp group 3 and this could have been the supporting the 10 vlan so that's definitely one of them and the priority is 105 so that's not the default the default is 100 so we're not using a default priority preemption is enabled that means if this router interface joins an hsrp network if its priority is higher than the current active router it's just going to go ahead and take over it's going to say i want to be active that's it and uh i think that's all the questions there let me clear that off hsrp is fun and once you get hsrp under your belt there's also v rrp open standard and there's also a first top redundancy protocol that can do load balancing and proportional load balancing which is amazing that's glbp gateway load balancing protocol but hsrp does not load balance by the way with just one group if you've got one group and you have one active one standby router the active router is doing all the work and the standby router for that one group is doing uh nothing except making sure that the active is not dead and here's question 3 of 13. it's multiple select with these three hsrp routers they're all supporting the same subnet if the active router fails the one who's the active role what happens all right another stepping stone uh these are totally uh just based on your feedback uh so r20 will be made active r3 will be made standby if you haven't studied hsrp it's like i don't know a couple of these answers i think um let's take a look at the media and talk about what happens uh is first first of all i intentionally chopped off the top part of these the command that was issued here is show standby that's how you see who's the primary and secondary or who's the active and and standby device so if we look at the output this is three routers they're all participating in the same standby group and uh let's see who's active says activerouter is 10 10 0 55. if r20 was the active router it would say local so r20 is not the active and r3 says active router is 10 10 0 55 at least they agree so r3 is not the active if we go down to r10 here it says activerouter's local it's me so we can just think of r10 is the active hsrp router and what that means is is that if somebody if a client did a arp request for the virtual ip r10 would be responding to that with the layer 2 address the you know the the ones associated with the virtual ip address and then as a result once the client has the virtual ip addresses layer 2 address via arp it would then for that frame and then the switch would lead it here to r10 who would be the active router okay so the question says what happens if the active router fails don't don't don't okay so r10 fails what's gonna happen well the guy who's currently standby is gonna be the new active router so let's find area right here here it says standby router is local that means r20 is the standby and if he stops seeing those hello messages in that same vlan that was is being supported by these three routers he's going to say whoa i need to go ahead and become the active router and it'll flip its roles it'll change from standby and it'll go to active so r20 will now be active and what about this guy what is he look at this active router is somebody else the standby router is somebody else you know this guy is he's in a state called listen listen hey so if we have like three routers which we do here and they're all tied to the same network one's gonna be active one's gonna be standby and the other is gonna listen he's just listening to see whether or not there's an active and a standby present and he is not literally just like this output shows he's not gonna be standby he's gonna be just there so in hsrp we're going to have exactly one active per group and we're going to have exactly one standby but i'll tell you what and i didn't actually realize this until yesterday when i laughed this up i just thought they would i you know i wasn't paying attention i guess i thought they would all be standbys uh but the reality is there's one active one standby and there's any other ones are just backups so you could say there's one active uh device for hsrp and then there's a group of more that can provide the backup support for it but in reality it's just one standby and then the other devices that aren't active and they're not standby they are what this guy is which is listen a state called listen so state either state active state standby or state listen those are the three states that we would expect to see all right so this guy would then change from listen and he would go to standby because there's no other devices on the network and that's what would happen so r3 would go to standby r20 would go to active and hopefully that's one of the uh some of the answers that were presented so r20 will be made active and our three will be made standby yeah yay all right moving on hey it's good to have everybody uh super falcon on the top of the heap 3413 points my my gratitude for everybody's spending a few minutes uh with us today there's like 183 people online i think there's probably 70 or 80 people who are playing the game and whichever way you want to roll it's all good glad you're here question 4 13. how do you see who are the hsrp active and standby routers all right 68 of you nailed it show standby is the command now you can add on to that you can say show standby for an interface you can do show standby include the group information but show standby just shows you all interfaces all groups that are participating in hsrp alright here we go moving on question 5 of 13 multiple select based on this output which of the following are true regarding hsrp all right red and green based on this output what is true regarding hsrp using a non-default priority and using a default virtual mac address what let's see here real quick getting my pin out so the priority right here it says the priority is 108 and it says configured even so the default priority is 100 anything other than 100 is going to be not using the default and it's using let's see here oh look at this who who made this it was probably me um this is showing the virtual mac address and this virtual mac address which is associated with the virtual ip address that's going to be supported by whoever's active that is the default mac address for version two oh it says right here right there for version two so the macro zero zero zero zero zero c9f is version two the other version one had a different one but check this out at the end see that 14. let's talk about what that is those last two characters are in hexadecimal and so it's the that's the 16th position and the ones position and this says there's one 116 and four ones so 16 plus 4 is 20 and that happens not accidentally to match the group number and hsrp does that with version one and version two these the last couple characters there in hex to represent the decimal group number uh great work let's click on next and continue on super falcon 5700 points followed by excited yak fabulous wolf aquatic buffalo and diplomat turtle no wonder turtles are so accepted very diplomatic all right glad everybody's here here's question six it is multiple select what is true about hsrp based on this output what are we looking at keith this is the mac address table on a switch something's connected off of gig zero slash one all right what is true about hsrp based on the output wow wow look at that using a default mac address using version two let's click on show media and wow so that is the default mac address for version two that the switch has learned on gig zero one and uh wow great work using default mac address and using version two all right that was a bunch of inference i appreciate you guys nailing it ah well these are gonna get easier as we go along we've already seen our hardest questions what is true about hsrp on the router named r20 that we're looking at right here yeah they're all true i do that i probably do that once a quiz in the cisco exam you're not likely to see you know choose all that applying into everything um but this one is everything preempt is enabled has a non-default priority using version one acting as a standby we look at the show media all that is decoded from this so active router or standby router is local yeah so i think we've covered all those pieces fantastic job i'm super happy all right we are more than halfway done i think let's go ahead and yeah we are here's question number eight multiple select what is true regarding this packet capture what what are you doing to us keith what are you doing well this is a packet capture that involves some hsrp i'm looking for what's true based on the four choices you've got this you've got this boom boom boom boom boom wow that's you know what i gotta say something here i am i am so pleased about the amazing quantity of spot on answers uh so it's great congratulations awesome awesome awesome that means you're you're aware of hsrp you're learning more about hsrp and you're applying that knowledge to this so let's take a look at the answers and are the uh the packet capture and let me just share with you what i know about this packet capture i made this back at capture yesterday um and uh here are a few things that we that we can determine from this packet capture the first thing is when you look at a lot of output like this it's just relax like i know there's a lot of stuff going on here but the question isn't asking us like hey can you determine uh you know what the uh index number is for this ipad like just just kind of take a breath and take a look at let's look at it from the bottom up so we know it's ethernet fantastic there's the source and destination addresses which is it's going off to a multicast address i cut that off a little bit um and then here it's showing us for the 802.1q tag we have a vlan id of 10 so on this frame as it was captured was over a trunk link and it was identified the 802.1q tag is 10 meaning this frame is 4 belongs to and is associated with vlan 10 and then the source address at layer 3 is 10103 which is one of our routers and the destination address is 24002 now that multicast address is local meaning if you see zeros here zero zero that means this multicast packet is not intended to be routed anywhere that's why we have like multicast for ospf is five and six and we have multicast addresses or other protocols as well like rip and eigrp and so forth so uh that is local and the this is the well-known multicast address used for version one of hsrp all right that happens through the case the here's the ports it's using 1985 what a great year that was this is saying that the priority is 111 so that's a non-default priority there's the group that's the hsrp group so up here uh this 10 up here is all about the you know literally the vlan we're supporting and this is all about the hsrp group number which is as long as all the devices agree on the group number you could use one or two or five or six or even zero you don't want to use a group number and it would use zero by default okay and then um there's the virtual ip being supported by hsrp all right a lot of fun stuff in there oh oh also check this out uh it's a coup message right there op code coup what that means is that somebody came online i don't mean just somebody i'm talking about this guy with this source address where is he where's layer three here it is the source address of 10.10.0.3 he came online had a higher priority number than what he saw the existing active router was and he sent in a little coup message saying hey my priorities way better than yours i think i should take over this and no one's going to compete with that if somebody has pre-upset they have a higher priority and they ask for it with a coup message you're going to go ahead and hand it over aquatic buffalo with 12 175 followed by diligent badger super falcon rapid crane and majestic sphinx but look at this mountain lark is making a comeback with three in a row no pressure but man the competition is hot let's go multiple select choose at least two answers maybe more what does this packet capture include what another packet capture well keith i'm gonna leverage what you just said and i'm gonna apply it here all right it's green and blue it's hsrp version one how do you know that well based on the multicast address that was shown that'd be one way let's click on show media so 224002 oh that's a bad color let me get rid of that let me go for this one so 24002 is the one we looked at in the previous packet capture and that's for version one and anybody want to guess what 102 is version two yeah so that's the different multicast address so they use different multicast addresses and the differences between version 1 and version 2 is support for igmp and also what else is this for this different oh then at behind the scenes they use a different default layer 2 virtual address mac address for the standby group those are the biggest differences that i recall question 10 of 13 two or more answers are being looked for here what is true about hsrp based on this output this is again is the mac address table on a switch looking at a specific vlan and a specific port i just wanted to make it fit on the screen so that's what i did okay using vlan 10 using group 10 version 1 and wow great great work let's just take a quick peek as a reinforcement of that so i mean right up here i said vlan 10 right here showing vlan 10 so vlan's 10 supports in use based on this mac address that's version 1 and based on these last two characters a if we are going to count in decimal it'd be like this 0 one two three four five six seven eight nine oh what do we do we carry the one that's what they taught me in grade school and we used to continue 11 12 13 14 15. we use a base 10 and that's because we have 0 through 9 which is 10 different numbers that we can use for base 10. however hexadecimal is base 16 that means there's 16 different combinations one are the zero one two three four five six seven eight nine so that's ten of them and then we start counting or we stick to the alphabet a b c d e f that's the equivalent and then once we get to f we then carry the one and start again so if we had a number like oh like a right there that is just a 10 that represents the hsrp group that automatically got mapped over so if we had a number like uh 14 and hex that would mean we have a 16 plus four ones that'd be 20. so just be aware sometimes if you're looking at you know how it's represented the mac address is always going to be uh 12 hexadecimal characters so the mac address would always be in hex and if it's anything higher than a a 9 you'd want to get out just be aware of what that value represents who's in top dandy newt 15 266 points we are coming down the home stretch r10 reboots and then you give it a few minutes to fully initialize what happens after r10 comes back online this is also assuming everything's converged everything's back to you know how it should be the router's not still booting up it's fully booted and had a few seconds to breathe what is expected to happen alright our 10 reboots what happens after r10 comes back online the majority of you nailed it 84 of us said we'll be active for group 10 and let's take a quick look at that and make sure we're all comfortable with why so this is before the reboot and this guy is the active router and there's a standby which has a priority of 106 but our priority is 108 which is very likely why we are the active router and preemption is enabled so if this guy rebooted regarding this hsrp group that's being supported on this interface if this guy rebooted and had a few seconds to breathe and just get back to normal because preemption is enabled and it's higher than the current standby who would be active actually while we rebooted but once we come back we'll do our coup we'll go ahead and get the active roll again so r10 in my opinion would be active again all right not my not just my opinion but that's literally what would happen all right i think we have a one or two more ah we're getting so close here we go two more 12 or 13 multiple select uh what is true regarding a functioning hsrp group that has three routers that are configured to support that group oh my gosh may i take just a moment and tell everybody how proud i am of us as a group oh my gosh look at that 101 99 98 all on the right answer i'm so tickled i'm so tickled way to go way to crush it uh one will be active one will be standby and one will be in listen you could also say that the one in standby and the one in listen state are there to back up the active in case something happens but literally there's a pecking order as far as priority and preempt and so forth all right wow wow wow wow i think we have one last question and then we'll uh i'll take a few questions and then uh donald rob on the discord server is going to be in the above ccna room chatting about some additional on box or off box automation and you look at my notes again but it's gonna be great all right all right dandy newt no pressure but you're in first place in this last question and how quickly we answer it and answer it correctly could keep you there or it could be an open game for anybody who's here in the top actually top 15 or 20 still possible all right here's the last question r10 and r20 they boot at the same time what is true for group 20 after both of these routers come back up all right yep you may say why why why is r10 going to be active so let's compare these real quick and then we'll take some questions i'm looking at the side-by-side output of a show running for the the interfaces so they're both using the same interface which they don't have to be but they are they're both supporting vlan 20 on that sub interface one has an ip address of 250 10.20.00 to 250 the other has a 10.0 10 to 20 to 0.20 that's the difference so i'll put that in a different color so that's the difference there i mean we have to have unique ip addresses i get that um they're both using version two that means they can actually function together they're both supporting the same virtual ip address which also would be expected oh they have the same priority oh okay so and they both have pre-empt enabled on there okay so uh it boils down to this if everything else is equal and they are both brought up at the same time the one with the higher i p address is going to be active even if we change addresses though if it's if we if we have let's say two or three devices that are already up and somebody else comes in they have the same priority and preempt is enabled they're not going to take over because they have a newer higher ip address but if they're booted at the same time they both come up and they both have the same priority and they're you know they have to decide who's gonna be active the one that has the highest iep address again both coming up at the same time the one has the highest ip address is going to win that decision and that's why that answer is correct all right 51. all right let's see how we did let's see how we did and here is the podium a moment of silence [Music] all right congratulations danny newt you did it uh here are our toughest questions from this quiz today and there was five so it was like 13 12 or 13 questions and here are our five toughest ones um what is true about hsrp based on this output but here's the deal here's the deal if you and i were and this let's imagine we took this whole group all of us and we took this quiz again even if i rewrote the questions and you know so they weren't the same answers but mixed them all up we would do amazing now because we know about the mac addresses that are different the multicast addresses that are different who wins if they both come up at the same time what happens if the active goes away the standby takes over uh yeah we do great so these are the toughest questions but i have reason to believe if we did it again uh these wouldn't be a problem at all for us all right so let's do this um [Music] oh yeah let me well let me just say goodbye to everybody who's watching the recorded version of this if you're watching the recorded version that's it join us every sunday eleven eight i have to think about that every sunday 11 a.m pacific time make it part of your calendar join us for a live quiz regarding cisco technology most of it right at the ccna level also on saturdays at 10 o'clock am there's the office hour regularly scheduled every saturday 10 o'clock a.m pacific time in the discord server join us there and we cover a new a different topic every single week and then i might pull a like an extra um what do you call it office hour occasionally based on request which is also occasional so i'll bring those up as well if you haven't done so already please subscribe make it easy to find me and i wish you the best of success in your ccna journeys so that's it for this quiz i'll see you in the next event i've been waiting all my life for something i've been down the darkest roads and up in the clouds but i've always felt that something's missed

Channel: Keith Barker

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Keywords: ccna, cisco, 200-301, Cisco CCNA, Cisco Certification, ogit, Keith Barker, cbt nuggets, cbt training, ccna 200-301, ccna certification, ccna study, ccna training, cisco ccna, cisco certifications, cisco training, 200-301 videos, ccna exam, cisco ccna 200-301

Id: m83SWv8DE60

Length: 29min 53sec (1793 seconds)

Published: Wed Apr 14 2021