ENCOR - SD-Access Architecture
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- Опубліковано 4 жов 2024
- In this video, we dive deeper into the SDA architecture. Specifically, we unpack the Physical and Network layers of SDA in detail, and we then look at the Controller/Management layers before exploring what a migration from a traditional architecture might look like.
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PPDIO - boy you are bringing me back. LOL , PPDIOO stands for Prepare, Plan, Design, Implement, Operate, and Optimize. PPDIOO is a Cisco methodology that defines the continuous life-cycle of services required for a network.
Jeff -you have a great way of breaking down concepts. Thank you man.
Great video. Thank you!
I like it thank you Jeff
Thanks, i only have a question can Lisp work withtout VXLAN ? Or both have to be used together always?
The two can absolutely work apart from one another. LISP traditionally uses its own tunneling mechanism, which is how it's deployed into the service provider space. However, that tunneling mechanism is L3-only, and Cisco needed a tunnel that works for L2 in SDA. Hence VXLAN. Likewise, VXLAN is traditionally deployed into the data center with a control plane protocol like EVPN.
I dont understand the part where you said you can deploy cheaper switches in the underlay (former distribution and core layers). Even before the advent of SDA and overlays, these layers (core specifically) also only mostly did layer 3 switching, but they were very expensive because of the bandwidth needed in their backplane, and the need for extreme reliability. I would imagine the bandwidth needs have not lowered with SDA. In fact I would imagine they went up since VXLAN on its own adds so much overhead that Jumbo Frames need to be enabled on all devices to avoid fragmentation.Could you please clarify this for me? Thank you!
So sorry for the very late reply, somehow I missed this until now. My comment about cheaper devices was not about bandwidth or latency processing, but about memory for routes. The routing tables on these underlay devices will be exponentially smaller, requiring less memory and therefore will be much cheaper.
I hope that helps!
Way better than Cisco’s “training “
Quick question ... how effective is SDA with using ISE?
Overall ISE is meant to be a part of SDA, so it should be well integrated. If you're looking for details/examples then I would reach out to your Cisco team. Hope that helps!
Hi Jeff,
Thank you for the Video, i really like the way you explain it and that you are taking time. Thank you again.
You said we have to make in VXLAN 54Bytes MTU?
Why i mean normal MTU is 1500 and in Tunneling we have to make it like 1400Bytes and TCP MSS 1360 Bytes.
Why do you make VXLAN MTU 50Bytes?
Thank you in advance
Great question! Every tunneling mechanism is different, and therefore the overhead amount will also be different. VXLAN requires an additional 50-54B depending on the configuration, so we would need the MTU to be set to at least 1550, or 9050 when using jumbo frames. This is one reason we set it to 9216B on Nexus switches - it covers all the overhead we need for jumbo frames.
I hope that helps!
@@KishSquared thank you very much.
How can i contact you sir i'm looking for a cisco instructor to train me i think i understand your teaching soo much. i'm base in Houston Tx
Where does firewalls fit into sdn or sd access fabrics?
Campus firewalling is performed by ISE integration. Firewalls would still exist at the Internet/DC boundaries, which is just part of the L3 routed network.
Hope that helps!
TR is transport?
Can Meraki equipment work as an SDA fabric?
i guess not
Hey Jeff, been trying to track you down for a quick bit of guidance regarding one of your UCS courses where i'm sort of stuck. Super lame detail...As you start using USCPE you start in a semi clean slate where it only shows the two FI's etc....The Emulator even the same version you're using out the gate comes with a ton of pre-configured hardware and connections etc. I started to try to guess if you deleted what, or disconnect (learned how) virtual devices to get to what state it was in to then follow your course, but its a mess. Can you sort me out with either how to get it to the slicked state you start your demo's in, and or maybe you can link for me a backup of that config i can import to be in lock step? It would just be so much cleaner to have it the same to follow alone without all that noise and or guess how to set it up similar etc. Let me know man. ;)
Hey homeslacks! Yes, it comes with preconfigured nodes and I believe I removed those before recording the videos. Unfortunately, I don't have that configuration anymore, so I have nothing I can share from that setup.
Are you watching the Cisco UCS Configuration skill? About 5 minutes into the first video, I show how you can change the hardware configuration using the web GUI that comes included. Once you remove any hardware you no longer want, you should just need to go into the UCS GUI and decommission any chassis you removed. I know it's a pain and not as straightforward as a clean slate.
Alternatively, you could just use the configuration Cisco provides, there's nothing particular bad about it and you can always modify it to your preferences. I do wish they started you clean, but it's better than nothing for sure.
Feel free to hit me up here or on Twitter DM (@KishSquared) if you need more help!
@@KishSquared Hey dude. So i did see and start to mess with the web ui adding/removing hardware but the one area that i have had some blanks on is where one makes the virtual network connections (add/remove). I thought, ahhh easy, i can quick remove the hardware then just add the stuff as i see you used and connect how needed. I think i've seen where/how to create those physical connections. Lame as it is, if you can give me a quick pointer on how to create those physical connections with the emulator i'd be set to just delete the stuff/add what i need/connect as needed to follow along nice and clean. :) Thanks for getting back man, ;)
@@homeslacks Let me take a look and get back to you. It's been a while since I spun up the PE so I'll see what I can find and let you know!
I like your videos but you include tooo much talking for no reason man! like it's too much and people would not stick to your videos, just to straight forward
I watched this video with playback speed 1.75, worked fine ;)
I enjoy the extra talk that makes me settled in here