Cisco Spine-leaf Network Topology | Cisco CCNA 200-301
ฝัง
- เผยแพร่เมื่อ 1 ต.ค. 2024
- 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).
Enjoy, Like, and Subscribe. 😃
🆓 Free Packet Tracer Labs download: thekeithbarker...
Free TH-cam Playlists from Keith:
▶ Master Playlist for Cisco CCNA 200-301 ogit.online/sloth
🔐 Cisco CCNA 200-301 Security ogit.online/20...
💻 Cisco CCNA 200-301 IPv4 Subnetting ogit.online/su...
💬 Join our Discord server (free) ogit.online/Jo...
🏪 Keith Barker Amazon Affiliate Store www.amazon.com...
And…
🏫 Keith’s Content at CBT Nuggets ogit.online/Ke...
#KeithBarker #CCNA #200-301
this is the best networking video I've watched. Clearly explained, illustrated, diagramed and labbed. Well done!
Wow, thanks!
agreed!! amazing video thanks so much
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?
Thanks Keith. This is one of the clearest videos on the spine-leaf architecture that I have had the privilege to watch. Good job.
Thank you Samuel Chege!
Keith, greatest explanation of Spine-Leaf network topology in the internet. Greatest teacher in the internet after all. Thnx
Thank you Dime Atomic!
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👍👍👍
And Chuck Keith
Thank you TRAXX!
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 .
You are welcome!
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!
Thank you Somasis Rakkhit!
Hey, Keith, thx. Are we supposed to know these details at CCNA Level?
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.
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)
Thank you @erothwell!
Man, I can't thank you enough for all you do for us.
Happy to do it, thanks for the feedback Carlos Malovini.
@@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.
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.
anyone knows the name of the lab software used here, it is really cool.
Thank you for the question @AhmadShrif. I use a few. For this one it was Eve-NG.
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
Happy new year!
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
Keith is the best teacher I have come across in the network industry
Thank you ANKIT TRIPATHI!
Thank you Mr Keith Parker, I really appreciate thats amazing friend, Wow !
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!
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
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!
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 ?
Hi
There's something I cannot understand here. The spine switches seem to be doing nothing but making routing decisions (all their interfaces have different network addresses). How come they are referred to as switches. Can you please shed some light on that? An I missing something?
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?
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.
Such a great explanation as always Keith
Thank you Owen Morgan!
Can't the 9K spine switches be connected with a keepalive link and peer link, so as to create a shared backplane for VPC?
Thanks Keith for this very clear explanation!
Glad it was helpful!
What type of connections should be between the spines and leaves? Trunk with no specified allowed vlans?
Keith what code/link did you use for the Secure CRT program fonts?
Thank you for the question Charles Yaw.
www.vandyke.com/support/tips/colorconfig.html
6783 is The OG of IT and probably still has an IBM 101 KB ✌
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!
I like to think of VXLAN as a replacement for STP.
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.
Thank you @user-rr3fo6hy9q!
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.
Thank you for the question @eoeoeovideos.
For the leaf/spine switches, they would be multi-layer switches, capable of L2 forwarding and L3 routing.
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.
Thank you @randallpittman3498! That is a good question.
at what point, if ever would you consider vPC between two leaf switches?
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?
Thank you for the question @TheRealOGChill.
I didn't use Packet Tracer for the spine-leaf video.
beautiful, waiting for the configurations on the spine side.
realy thanks Mr Barker , u couldn't imagine a such respect and estim that u have here in Afric and in Algeria
Thank you majid dehbi!
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
Thank you @abdelrahmangamal5875!
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
Hello Keith, are these vids part of a series and can one purchase these?
Thanks a lot Keith! I'm engaging in the CCNP Data Center and that's my first video i'm watching!
Welcome!
Thanks for the great video as usual Keith, can you post the documentation to do such config? Thanks
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
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.
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?
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!
Wow you my man are a goat . I haven’t done networking in some time just got bored reviewed this video and got the sync I needed
Thank you @jerrysanchez8361!
I have few questions, Keith sir.
Are leaf switches only layer 2 switches and not layer 3 switches? If they are only layer 2 switches, then are all servers in that same rack lies in same network subnet?
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.
Love your countdown design Keith. Well and simply explained
Thank you Charles Yaw!
What are you using as a whiteboard?
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?
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?
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.
This is awesome explanation of VXLAN, may I know K9 and leaf switches versions?
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!
I am always find you the best explanation and configuration in every network concepts! Alwaays
I appreciate that!
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.
This explanation was very interesting, why would we need two servers or endpoints to be on the same vlan? what is the benefit?
So I can use use EvNG to get hands on with Data center technologies? or Automation?
I know its not packet tracer but that lab simulation are you using
Thank you for the question patrick oneill.
In this video I used Eve-NG
Excellent vid. Thank you.
Very welcome
Awesome video! Thanks!
Excellent video Keith.. If someone need to clear the basics of Vxlan it is the ultimate choice.
What emulator is he using? GNS3?
Thank you for the question @arthurherringiii.
For this video I used Eve-NG.
"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!
Glad you enjoyed it
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.
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.
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?
Spine-Leaf architecture uses BGP. Typically eBGP....
How the hell is this CCNA?
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
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.
Keith continue to be the best at explaining how things work, regardless of complexity. Him and Jeremy are the best! Thank you.
Thank you!
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.
Best of luck!
Clarity makes all the difference. You simple inspire tons of people to learn.
Wonderful training, thanks Keith 😊
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
Thank you Kiran!
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.
Thank you Hamza Ghazi!
Great way to explain Spine/Leaf and VxLAN's ... Perfect timing for me to learn. Thank You
Glad you liked it!
This video is part of which course ?
Thank you for the question @user-ti9hj5lu6t. This topic is in lots of Cisco content including the CCNA and CCNP courses.
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 ?
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
You are a gentleman and a scholar :)
Thank you Matthew Cardinal!
Awesome video! Can you make a video how did you setup your EVE-NG and ACi?
Yes, soon
Great job explaining the subject matter! Thank you.
Happy to do it, thanks for the feedback Skater Jeff.
awesome video Keith, thanks a lot... with you this topic is more simple now :D
Glad it was helpful!
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.
Thank you Bryan Pike!
the best video
Keith what are you using to simulate the lab? Does not look like GNS
Eve-ng
impressive explanation!
Thank you David Lopez!
Thank you Keith , so much knowledge in this video, it's amazing !
Thank you RiFF!
Thank you, Keith; Clarity as always.👍🏾
May I have a copy of this lab? It would help greatly, in my efforts understanding the options for "Flood Optimization." Thank you in advance.
Hi Mason. This is in my CML lab. If you know of an easy way to export it, let me know.
@@KeithBarker Hi Keith. I emailed you, what I believe will be the needed info. Thanks again.
Hi Keith. Were there problems sending it?
how is this different from building gre tunnels between switches?
Thank you M Mad. Feel free to join my Discord sever. Lots of people there helping each other out. Each Saturday at 10am Pacific I hold my "Office Hour" where learners can ask questions about the topics they are studying. Mostly focusing on Cisco CCNA 200-301 topics. Feel free to join us there live if you are available. Here is the link ogit.online/Join_OGIT_on_Discord
Thanks again M Mad!
Fantastic!
Amazing content. Keith is a real guru ❤
Thank you @RahulChaudhary-cw9rn!
I want to thank you very much , it's amazing !!
Thank you THE Wolf!
great explanation
Glad it was helpful!
Thats not CCNA, thats CCNP
Thank you Josue Cortorrel Rosario VXLANs are indeed a bit beyond CCNA.
My major focus was on 1.2, from the Cisco CCNA blueprint:
1.2
Describe characteristics of network topology architectures
1.2.a 2 tier
1.2.b 3 tier
1.2.c Spine-leaf
Thanks for the feedback, and have a great week!
Great explanation of vxlan and it's usage!
Thank you MDRam!
Thanks Keith. you are just amazing!
Thank you sibin k!
Thank you Keith for this great explanation
Thank you Hector Mena Gutierrez!
Wow… thank you !!!
You are welcome!
This is the best video
Thank You!