Cisco Spine-leaf Network Topology | Cisco CCNA 200-301

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In a previous video we discussed the 2 and 3 tier hierarchical models. (Previous video • Network Topology Archi...
This video explains the Spine-Leaf model and also introduces the concept of VXLANs (Virtual eXtensible Local Area Networks).
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Опубликовано:

5 авг 2024

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Комментарии : 202

@99bablefish 2 года назад

this is the best networking video I've watched. Clearly explained, illustrated, diagramed and labbed. Well done!

@KeithBarker 2 года назад

Wow, thanks!

@dimea.atomic.seijin 2 года назад

Keith, greatest explanation of Spine-Leaf network topology in the internet. Greatest teacher in the internet after all. Thnx

@KeithBarker 2 года назад

Thank you Dime Atomic!

@ewsdneax61eaxe10 2 года назад

There are only two Keiths that i really admired in teaching networking 1. Keith Barker and the other 2. Keith Boggart. Thank you Sirs you really helped me passed my Cisco exams👍👍👍

@madjedsolt5878 2 года назад

And Chuck Keith

@KeithBarker 2 года назад

Thank you TRAXX!

@hcetc 2 года назад

Thanks Keith. This is one of the clearest videos on the spine-leaf architecture that I have had the privilege to watch. Good job.

@KeithBarker 2 года назад

Thank you Samuel Chege!

@erothwell 3 месяца назад

I love it when technology is explained in an easy-to-understand way (with illustrations 😁) and Keith Barker is on my top three MVTs (Most Valuable Trainers)

@KeithBarker 3 месяца назад

Thank you @erothwell!

@parimi001 Год назад

Clarity makes all the difference. You simple inspire tons of people to learn.

@AnkitTripathi 2 года назад

Keith is the best teacher I have come across in the network industry

@KeithBarker 2 года назад

Thank you ANKIT TRIPATHI!

@snawuma7 2 года назад

Keith Barker is the most awesome IT skills teacher who has a very deep knowledge of Networking and even better explaining skills. You are the one whose finger i have held in my journey in the Networking world. Hats off for you Sir...Please show eve-ng lab setup with the configuration to further master this technology.

@somasisrakkhit5605 Год назад

That was really a great session Keith! You are not only a very good teacher, but also a very good human being. Love your advice at the end - Be happy and treat everybody well!

@KeithBarker Год назад

Thank you Somasis Rakkhit!

@lara400notout Год назад

Wow. What a video that was. I am not a network person but had an email from networking team stating "spine and leaf", me being me I wanted to understand what that is and this video just blew my mind with all the details and the presentation. You have earned a new subscriber!

@salihahassan7029 2 года назад

Thank you very much for this transparent description of datacenter modle network, I have just started working in data center and this really helped me .

@KeithBarker 2 года назад

You are welcome!

@carlosmalovini5319 2 года назад

Man, I can't thank you enough for all you do for us.

@KeithBarker 2 года назад

Happy to do it, thanks for the feedback Carlos Malovini.

@susmitamazumder8390 2 года назад

@@KeithBarker hi good morning. After 23rd you are not uploading any quiz videos. only I see the office hour videos. Is it possible to upload the quiz videos. I checked on discord. they are not even there. thanks in advance . and please upload.

@BryanPike 2 года назад

Thanks Keith! You are not the only one who may get a bit overly excited when stuff just works out of the gate. This was a fantastic refresher for me.

@KeithBarker 2 года назад

Thank you Bryan Pike!

@billmutombomasanka9793 2 года назад

Thank you Mr Keith Parker, I really appreciate thats amazing friend, Wow !

@Kiran-vq7jx 2 года назад

I like Keith Barker and Jermy Coira for there best teachings. They explain with real world examples thts the best way to understand and when we are actually working on the project we can apply those concepts easily. Thanks 🙏 to both of them and all other best tutors of CBTnuggets

@KeithBarker 2 года назад

Thank you Kiran!

@Androcentus 11 месяцев назад

Keith continue to be the best at explaining how things work, regardless of complexity. Him and Jeremy are the best! Thank you.

@KeithBarker 9 месяцев назад

Thank you!

@sayantanmitra4879 Год назад

Excellent video Keith.. If someone need to clear the basics of Vxlan it is the ultimate choice.

@jaffatherealest 2 года назад

"YOUVE GOT TO KNOW WHEN TOO HOLD THEM..... KNOW WHEN TO FOLD THEM" - this song is so good. Reminds me of your STP video. Thanks for your service to this wonderful community. More cisco!

@KeithBarker 2 года назад

Glad you enjoyed it

@majiddehbi9186 2 года назад

realy thanks Mr Barker , u couldn't imagine a such respect and estim that u have here in Afric and in Algeria

@KeithBarker 2 года назад

Thank you majid dehbi!

@charlesyaw6514 2 года назад

Love your countdown design Keith. Well and simply explained

@KeithBarker 2 года назад

Thank you Charles Yaw!

@G1rlyG33k 2 года назад

Great way to explain Spine/Leaf and VxLAN's ... Perfect timing for me to learn. Thank You

@KeithBarker 2 года назад

Glad you liked it!

@riff1175 2 года назад

Thank you Keith , so much knowledge in this video, it's amazing !

@KeithBarker 2 года назад

Thank you RiFF!

@ve55 2 года назад

Perfect .. .we're getting new cisco datacenter switches in spine/leaf style in a few months. This gives a lot of information about how this works! Thank you.

@KeithBarker 2 года назад

Best of luck!

@kevinjohnson2380 2 года назад

Happy new year, it’s been a while since I have seen your CCNA nuggets. The content is exactly what I expect from you, first class. All the best Jedikj95

@KeithBarker 2 года назад

Happy new year!

@ericktapia775 Год назад

Wonderful training, thanks Keith 😊

@venkatesh4760 2 года назад

Thanks Keith for this very clear explanation!

@KeithBarker 2 года назад

Glad it was helpful!

@somanathsshenoy 10 месяцев назад

I have been following many of your videos. They are highly educational. I observed in this video you look tired. Please take good care of yourself / your health. Every enthusiastic student is highly indebted to you. We need you.

@owenmorgan857 2 года назад

Such a great explanation as always Keith

@KeithBarker 2 года назад

Thank you Owen Morgan!

@user-rr3fo6hy9q Месяц назад

This video should be added to the CBT Nuggets CCNP and CCNA curriculum. I've read up and watched several videos on VXLAN/Spine/Leaf and somewhat understood the topic, but five minutes into this video a light bulb went off. I do have a recommendation; when you make labs like this, please provide the command list. I like to follow along by doing rather than watching. Excellent work again Keith, thank you sir.

@CiscoSaeed Год назад

I am always find you the best explanation and configuration in every network concepts! Alwaays

@KeithBarker Год назад

I appreciate that!

@jepotsalvatore2748 9 месяцев назад

Awesome video! Thanks!

@hamzaghazi7485 2 года назад

Thanks Keith, now I understood TOR switches and their purpose and how we use them in Spine/Leaf Topology. Looking forward to more videos, related to Data center networking topics.

@KeithBarker 2 года назад

Thank you Hamza Ghazi!

@YouSharp1 9 месяцев назад

Fantastic!

@sibinkuttan 2 года назад

Thanks Keith. you are just amazing!

@KeithBarker 2 года назад

Thank you sibin k!

@elhec110 2 года назад

Thank you Keith for this great explanation

@KeithBarker 2 года назад

Thank you Hector Mena Gutierrez!

@Movieman257 Год назад

Great job explaining the subject matter! Thank you.

@KeithBarker Год назад

Happy to do it, thanks for the feedback Skater Jeff.

@nox78 Год назад

Love you Keith!!!

@KeithBarker Год назад

Thank you Pablo Busto!

@fergeraci Год назад

Excellent vid. Thank you.

@KeithBarker Год назад

Very welcome

@Rahul_patera Год назад

Amazing content. Keith is a real guru ❤

@KeithBarker Год назад

Thank you @RahulChaudhary-cw9rn!

@THEWolf-bz6ot 2 года назад

I want to thank you very much , it's amazing !!

@KeithBarker 2 года назад

Thank you THE Wolf!

@jalewando9214 Год назад

Wow… thank you !!!

@KeithBarker Год назад

You are welcome!

@alejandroherreraulloa1055 Год назад

awesome video Keith, thanks a lot... with you this topic is more simple now :D

@KeithBarker Год назад

Glad it was helpful!

@Michael-er8dh 2 года назад

super amazing explanation!!!

@KeithBarker 2 года назад

Thank you Michael!

@mdram Год назад

Great explanation of vxlan and it's usage!

@KeithBarker Год назад

Thank you MDRam!

@popquizzz 2 года назад

This is brilliant using UDP for the delivery of the packet, not having to care if it gets there or not because the higher level TCP protocol is still in tact from the original frame. This seems to be a brilliant way to flatten a network in a homogenously environment like a datacenter. Do you see VXLAN technology being used external uf the DC?

@ryanrrothwell Год назад

Thanks Keith!

@KeithBarker Год назад

Happy to do it, thanks for the feedback Ryan Rothwell.

@rumesh.official6850 2 года назад

Wonderful explanation Keith

@KeithBarker 2 года назад

Thank you Rumesh.Official!

@ajithraveendran8024 2 года назад

Thanks Keith. 🙇

@KeithBarker 2 года назад

Thank you Ajith Raveendran!

@profileman1083 2 года назад

Great explanation. You are an expert

@KeithBarker 2 года назад

I appreciate that!

@muhammaduzairahmed8694 Год назад

Thank you sir!

@KeithBarker Год назад

You are welcome!

@MansourSarr 2 года назад

Thanks alot for making it so simple, hat-off

@KeithBarker 2 года назад

Happy to do it, thanks for the feedback Mansour Sarr.

@pace1134 2 года назад

Great explanation of spine/ leaf as well as vxlan, would love to see a follow up video on how to lab this up using eve-ng

@manuelaraica3216 2 года назад

Thanks Keith! It is an understatement to say how much we learn from your videos. Cant thank you enough.

@KeithBarker 2 года назад

Thank you Manuel Araica!

@david_108 2 года назад

impressive explanation!

@KeithBarker 2 года назад

Thank you David Lopez!

@helinaemeru2174 Год назад

the best video

Год назад

Great video! I appreciate you taking time to explain spine-leaf topology. I would like to learn more about spine-leaf and VXLAN. Could you please recommend some books or any other learning material about this stuff? Thank you!

@matthewcardinal4186 Год назад

You are a gentleman and a scholar :)

@KeithBarker Год назад

Thank you Matthew Cardinal!

@nguyenuckien1168 2 года назад

This is the best video

@KeithBarker 2 года назад

Thank You!

@jubrilak Год назад

great explanation

@KeithBarker Год назад

Glad it was helpful!

@yannelanga6010 10 месяцев назад

beautiful, waiting for the configurations on the spine side.

@randallpittman3498 4 дня назад

Awesome explanation, vxlan makes loads more sense now. I wonder what the routing pattern and typical connection layout would be for a dual ToR system.

@lahirupriyankara2183 2 года назад

this guy rocks

@KeithBarker 2 года назад

Thank you Lahiru Priyankara!

@comayo07 2 года назад

Thank you

@KeithBarker 2 года назад

Thank you CA se!

@indianinaustralia4421 2 года назад

Awesome.. it would have been great if initial arp packets were captured as well.. I'll try doing that :)

@aaronriggan2373 2 года назад

This is my first introduction to Spine-Leaf / VXLANs and all I can say is WOW. There's definitely a few possibilities this opens up! How does inter-vlan (inter-vxlan?) routing work at this stage? Is it VRRP or similar to virtualize the gateway address, or is there a different mechanism altogether?

@iBl0b Год назад

Hi Keith, thanks for this learning episode ! In order to make a physical lab on Spine/Leaf and VxLAN, what is the minimal hardware config for spine and leaves ? Is there any old hardware which can manage that ? And, even if it's not the topic, what is the minimal switch type to use MLAG (without stacking) ? (I know that staking is much better for production, easier, faster, etc. It's just for lab) Thanks ! Fred

@elsilonsilva5379 11 месяцев назад

Wonderful explanation of the Spine-Leaf architecture. Could you provide the configuration script and mounted images of the spine and leaf switches in the EVE LAB. I want to play the same.

@Marbell26 2 года назад

The Leafs have the default gateways for each subnet correct? If so, are you using Anycast gateways so that the same gateway exists on each Leaf? Or is that something that is proprietary for Cisco ACI?

@saibot293 2 года назад

So I can use use EvNG to get hands on with Data center technologies? or Automation?

@rick777888 6 месяцев назад

Can't the 9K spine switches be connected with a keepalive link and peer link, so as to create a shared backplane for VPC?

@abdelrahmangamalmahdy 5 месяцев назад

Thanks so much for the demo. But I think there's a small misunderstanding at 20:10 as it's normal that the response to the first ping request to get lost due to ARP broadcasting. Even though there are two ECMP paths, each L4 socket will go through the same path due to hashing which helps the packets come in the same order they were sent in

@KeithBarker 5 месяцев назад

Thank you @abdelrahmangamal5875!

@charlesyaw6514 2 года назад

Keith what code/link did you use for the Secure CRT program fonts?

@KeithBarker 2 года назад

Thank you for the question Charles Yaw. www.vandyke.com/support/tips/colorconfig.html

@TheRealOGChill 3 месяца назад

Which packet tracer lab on your website follows along with this video if you happen to have one? I am a little confused about the two different networks, do I need one network on the left side and another network on the right side, or am I misunderstanding something?

@KeithBarker 3 месяца назад

Thank you for the question @TheRealOGChill. I didn't use Packet Tracer for the spine-leaf video.

@uvarbt Год назад

In this scenario When using the VNI interface is configured and and vlan 9 associated with it for an access interface and a the VM is communication are ok. But is this still be possible in case of VMware VM which is having NSX as a sdn? Or it's not appropriate to use both ? Or both can be used ? Could you please post a vblog in this ?

@pacoz5359 2 года назад

This explanation was very interesting, why would we need two servers or endpoints to be on the same vlan? what is the benefit?

@m-electronics5977 10 месяцев назад

7:01 but then the routing process is in both of the Switches? In leaf and spine? Because when some host is connected to the ToR / LEAF Switch of Rack 3 this Switch must be the gateway for that address?

@changoramos5571 2 года назад

Hello Keith, are these vids part of a series and can one purchase these?

@rjnasr8078 Год назад

Great job, It was great that you explained this from the hosts point of view. Would it be possible to share the YAML file please.

@aliabdulrazaq3852 2 года назад

Thanks for the great video as usual Keith, can you post the documentation to do such config? Thanks

@KeithBarker 2 года назад

Thank you for the question Ali Abdulrazaq. these are my working notes, from that video. conf t boot nxos bootflash:nxos.9.3.6.bin end copy run start !Spines and Leafs conf t feature nv overlay nv overlay evpn feature ospf feature bgp feature vn-segment-vlan-based system jumbomtu 9216 router ospf 1 int e1/1-6 no switchport no shutdown ip router ospf 1 area 0 int loop 0 ip router ospf 1 area 0 end ! Leaf-3 only conf t int nve1 source-interface loopback0 member vni 6783 no ingress-replication protocol bgp no host-reachability protocol bgp member vni 6783 ingress-replication protocol static peer-ip 10.10.10.6 no shutdown exit interface e 1/7 switchport switchport access vlan 9 no shutdown exit vlan 9 vn-segment 6783 end ! Leaf-6 only conf t int nve1 source-interface loopback0 member vni 6783 no ingress-replication protocol bgp no host-reachability protocol bgp member vni 6783 ingress-replication protocol static peer-ip 10.10.10.3 no shutdown exit interface e 1/7 switchport switchport access vlan 9 no shutdown exit vlan 9 vn-segment 6783 end ! spine conf t router bgp 123456 router-id 10.10.10.x address-family ipv4 unicast address-family l2vpn evpn neighbor 10.10.10.3 remote-as 123456 update-source loopback0 address-family l2vpn evpn send-community both route-reflector-client address-family ipv4 unicast update-source loopback 0 end conf t router bgp 123456 address-family ipv4 unicast address-family l2vpn evpn neighbor 10.10.10.4 remote-as 123456 update-source loopback0 address-family l2vpn evpn send-community both route-reflector-client address-family ipv4 unicast update-source loopback 0 end conf t router bgp 123456 address-family ipv4 unicast address-family l2vpn evpn neighbor 10.10.10.5 remote-as 123456 update-source loopback0 address-family l2vpn evpn send-community both route-reflector-client address-family ipv4 unicast update-source loopback 0 end conf t router bgp 123456 address-family ipv4 unicast address-family l2vpn evpn neighbor 10.10.10.6 remote-as 123456 update-source loopback0 address-family l2vpn evpn send-community both route-reflector-client address-family ipv4 unicast update-source loopback 0 end ! leafs conf t router bgp 123456 router-id 10.10.10.x address-family ipv4 unicast neighbor 10.10.10.1 remote-as 123456 update-source loopback0 address-family ipv4 unicast address-family l2vpn evpn send-community send-community extended neighbor 10.10.10.2 remote-as 123456 update-source loopback0 address-family ipv4 unicast address-family l2vpn evpn send-community send-community extended end show nve peers detail show nve vni show run | include vlan|6783 show nve peers show nve peers detail show ip route 10.10.10.3

@xrellikgr 2 года назад

Instead of VMs connected to the layer 3 switches you can also have layer 2 switch and you can isolate any loops that happen to a single rack.

@Mes21211 Год назад

This is awesome explanation of VXLAN, may I know K9 and leaf switches versions?

@majorburly2007 9 месяцев назад

6783 is The OG of IT and probably still has an IBM 101 KB ✌

@uvarbt Год назад

Hi sir, Is this covered as a course from you to achieve ccna and the get to know all about Networking fundamentals and to become more proficient?

@ashalan767 2 года назад

Keith, to be clear, the ToR switches are L3 and the subnet that the ToR is using for the hosts in the rack is an SVI that is using OSPF correct? Then we put OSPF on the spine connections so routing is then achieved. Is my thinking correct?

@venkateswarwunnava6911 2 года назад

Spine-Leaf architecture uses BGP. Typically eBGP....

@djthomassmith Год назад

Hi Keith! I am preparing for CCNA from your videos. May I have the track ID of the background music you used on the CBT Nuggets Cisco CCNA 200-301 review trainings videos? One example:CCNA 38-Interpret and Describe a Cisco IP routing table. 9. Review of Interpret and Describe a Cisco IP routing table.

@michaelgodwin7702 Год назад

What type of connections should be between the spines and leaves? Trunk with no specified allowed vlans?

@zaksteve4942 4 месяца назад

If I want to add firewall & WAN connections, where it would be the interconnection, on the leaf or spine? Unfortunately, I saw both but I belive it must be on the leaf. would you please verify this point? thanks

@albert54505 2 года назад

Awesome video! Can you make a video how did you setup your EVE-NG and ACi?

@KeithBarker Год назад

Yes, soon

@jovsta 9 месяцев назад

What are you using as a whiteboard?

@emersonnatividad5948 2 года назад

Great Video Keith, Just want to know where did you configure the svi of vlan 9 and the end devices how they get their IP from vlan 9? Thank you Keith

@KeithBarker 2 года назад

Thank you for the question Emerson Natividad. The SVIs would be on the leaf switches. Fort DHCP, the relays could be on the leaf switches, or the leaf switches could provide dhcp service directly.

@kellymoses8566 2 месяца назад

I like to think of VXLAN as a replacement for STP.

@EnriqueVillarMavila Год назад

Hi. I understand when a tenant have a vlan 3 and a vni 3000 and other tenant have a vlan 5 and vni 5000. But what happens when I have a tenant 1 with vlan 3 and another tenant with vlan 3? Thanks!

@shezzy97 2 года назад

Keith what are you using to simulate the lab? Does not look like GNS

@s9009 2 года назад

Eve-ng

@MinisterOfGuam Год назад

at what point, if ever would you consider vPC between two leaf switches?

@redadz9105 Год назад

Hey, Keith, thx. Are we supposed to know these details at CCNA Level?

@KeithBarker Год назад

Thank you for the question Reda DZ. The blueprint doesn't ask for the nitty gritty details, but rather wants the CCNA to be able to: Describe characteristics of network topology architectures 1.2.a 2 tier 1.2.b 3 tier 1.2.c Spine-leaf 1.2.d WAN 1.2.e Small office/home office (SOHO) 1.2.f On-premises and cloud Hope that helps, and happy studies.

@andreiantonescu8827 2 года назад

Is VXLAN something relatively new? I got my CCNA over three years ago and don't recall it being mentioned in the curriculum. Sounds easier than using router on a stick layer 3 routing on the backend or messing with lots of layer 2 trunking.

@KeithBarker 2 года назад

Thank you for the question Andrei Antonescu. VXLAN isn't on the list of topics for the current CCNA either, but the Spine-Leaf topology is, and that was my main point of the video.

@indrajittalukdar4904 2 года назад

Keith, why we dont have a cross connect between the leafs ? What is the reason ? Is it because we want the switches to be fully NON-Blocking ?

@KeithBarker 2 года назад

Thank you for the question Indrajit Talukdar. The answer is here: www.cisco.com/c/en/us/products/collateral/switches/nexus-7000-series-switches/white-paper-c11-737022.html

@eoeoeovideos 4 месяца назад

This Lead or Spin switches, can be any switches or is an specific model ? I am not talking only for CISCO but also for others switching model.

@KeithBarker 4 месяца назад

Thank you for the question @eoeoeovideos. For the leaf/spine switches, they would be multi-layer switches, capable of L2 forwarding and L3 routing.

@mw9463 Год назад

Excellent video! One question. Communication between switches is L3. So each switch is maintaining routing table. Maybe there is ospf there between leaves and spines. What if we have that situation from the film that we want to use vxlan to connect with l2 two different segments? Routing table on spine/leaf switches will show the route to the same subnet but via morę than one different interfaces? On the spines it will be interfaces towards sw3 and sw6. And on sw3 there will be 3 entries to that subnet: directly connected, via spine1 and via spine2. My brain is confusing something so please explain it to me :) best regards!

@tolgayucel1442 10 месяцев назад

Is there any specific reason not to connect spines each other? Because if sw3-spine1 and sw6-spine2 goes down, than there would be no communication between sw3-sw6. And i know we should not care 2 level disaster while designing the network but is it harmful to connect spines each other? Thanks!