Trying to take some of the fear out of the DNAC/SDA Architecture and method. The Cisco DNAC can really be your best friend if you learn how to leverage it!
Thanks Terry, great video as always. Couple of observations: - Why does it make you "provision" the device when it's already in a managed state with all the config on, not sure what that is actually doing in the backgroun... - It seems totally counter-intuative, to have to click STOP halfway through a process to get the inter-switch links all /30 L3 links! Why can't it just do this automatically?
so basically you are asking WHY?!!? Cisco did what they did. I'll need a dead cat, a crystal ball, a quart of pigs blood and 3 weeks to figure that out. :P I agree with everything you mention which is why I made the video in the first place.
In the LAN automation process, I wonder how DNAC goes about changing the IP address and such for the interface on the edge that it itself is connected to inband without losing the connection. It looks like the seed devices discover the edge devices, and then sets up basic networking on them and the southbound seed device interfaces so the edge has IP connectivity to DNAC. So, edge device uses a simple VLAN 1 SVI to pull DHCP address from the seed DHCP server, and has L2 links up to the seeds. When you click “stop” how does it reconfigure everything inband without losing a connection? In other words, DNAC must be connecting to the edge VLAN 1 IP initially, but then the VLAN 1 SVI is effectively brought down as the edge uplinks are transitioned to L3 links running ISIS, etc. Great video Terry!
I am going to record a new video setting up SDWAN as transit between two Fabric Sites under one DNAC. I'll take the time to walk thru the process as LAN automate one site. Just for fun i'm going to put a intermediate node between the Border and 2 Edges. But essentially you are correct. Great idea to demonstrate it.
Hopefully it is helpful to you. Others are in the works now. I won't focus on Wireless yet because its not on the CCIE EI blueprint. My hope is to help students realize SDA/DNAC isn't something to be scared of. :)
Hi Terry, What about the discovery of the Fusion router by DNAC? that is needed because is the transit network between shared services and the Fabric, am I correct?
Well DNAC does not exert any control over the Fusion Node, but obviously it can be discovered using pnp or discovery. i have never LAN automated the process to be honest.
if we need to change some configurations only on Edge-12 then how could we do that ? Do we have to change the configuration manually to Edge-12 or is that possible to change to do it with the help of DNAC?
@TerryVinsonCCIEx2 if we don't use discovery for BN/CP Node commissioning, as we will not have console connection at remote sites to put the basic bootstrap Lo0 config in on it, while commissioning the Border node. what would be the process to use LAN automation or PnP method to get the Border node onto DNAC, then make it as a seed node for LAN automaton further.
The main way I would pic would be pnp, LANauto and I don't get along because I don't like ISIS in the underlay (personal opinion). So I would use PNP with onboarding and Templates (regular and composite). I can make a video if that would help.
@@TerryVinsonCCIEx2 thanks for your response, appreciate it. A video would really help to understand what basic bootstrap I can push on day 0 for the BN if using PNP and then day N other Configs.
@@TerryVinsonCCIEx2also, in our setup, on our sites, dnac will be in DC, then there is dmvpn wan inbetween, with dmvpn spoke routers ASR 1006 to which the cat 9500 will be connected acting as BN/CP nodes and they will be L3 handoff and we have 4 vrfs. How does the router and bn node connection configured ? For vrfs ? I believe mp bgp and on router side sub-interfaces ? If you could highlight on that, that would help.
Trying to take some of the fear out of the DNAC/SDA Architecture and method. The Cisco DNAC can really be your best friend if you learn how to leverage it!
How can be a student or get the full video?
Explanation and demo of the material is absolutely perfect Terry! Thank you so much for posting!
Glad you enjoyed it!
Really great explanation! Now a lot of concepts are finally clear to me.. Well done Terry
super video, concepts cleared, thanks Terry
Just Wonderful!! Terry, it's just a lot informative all the way! Thank you so much!
You are very welcome
Thanks allot, cant wait for the next lecture!
Glad to hear that!
Thanks Terry, great video as always. Couple of observations:
- Why does it make you "provision" the device when it's already in a managed state with all the config on, not sure what that is actually doing in the backgroun...
- It seems totally counter-intuative, to have to click STOP halfway through a process to get the inter-switch links all /30 L3 links! Why can't it just do this automatically?
so basically you are asking WHY?!!? Cisco did what they did. I'll need a dead cat, a crystal ball, a quart of pigs blood and 3 weeks to figure that out. :P
I agree with everything you mention which is why I made the video in the first place.
@@TerryVinsonCCIEx2 LMAO! And I'm glad you did. Also enjoying your newer videos on the subject as well.
Thanks for this great video. This is the best explanation of the topic I have seen. Eagerly waiting for the next episodes :)
Thanks. Glad you enjoyed it.
Glad you liked it! More will be posted this week.
In the LAN automation process, I wonder how DNAC goes about changing the IP address and such for the interface on the edge that it itself is connected to inband without losing the connection. It looks like the seed devices discover the edge devices, and then sets up basic networking on them and the southbound seed device interfaces so the edge has IP connectivity to DNAC. So, edge device uses a simple VLAN 1 SVI to pull DHCP address from the seed DHCP server, and has L2 links up to the seeds. When you click “stop” how does it reconfigure everything inband without losing a connection? In other words, DNAC must be connecting to the edge VLAN 1 IP initially, but then the VLAN 1 SVI is effectively brought down as the edge uplinks are transitioned to L3 links running ISIS, etc. Great video Terry!
I am going to record a new video setting up SDWAN as transit between two Fabric Sites under one DNAC. I'll take the time to walk thru the process as LAN automate one site. Just for fun i'm going to put a intermediate node between the Border and 2 Edges. But essentially you are correct. Great idea to demonstrate it.
wonderful explanation, next video?
Thanks a lot...,Sir
Was waiting for this lecture.
Hopefully it is helpful to you. Others are in the works now. I won't focus on Wireless yet because its not on the CCIE EI blueprint. My hope is to help students realize SDA/DNAC isn't something to be scared of. :)
Hi Terry,
What about the discovery of the Fusion router by DNAC? that is needed because is the transit network between shared services and the Fabric, am I correct?
Well DNAC does not exert any control over the Fusion Node, but obviously it can be discovered using pnp or discovery. i have never LAN automated the process to be honest.
if we need to change some configurations only on Edge-12 then how could we do that ? Do we have to change the configuration manually to Edge-12 or is that possible to change to do it with the help of DNAC?
Thank you very much Sir.
You are most welcome! More videos on the way.
@TerryVinsonCCIEx2 if we don't use discovery for BN/CP Node commissioning, as we will not have console connection at remote sites to put the basic bootstrap Lo0 config in on it, while commissioning the Border node. what would be the process to use LAN automation or PnP method to get the Border node onto DNAC, then make it as a seed node for LAN automaton further.
The main way I would pic would be pnp, LANauto and I don't get along because I don't like ISIS in the underlay (personal opinion). So I would use PNP with onboarding and Templates (regular and composite). I can make a video if that would help.
@@TerryVinsonCCIEx2 thanks for your response, appreciate it. A video would really help to understand what basic bootstrap I can push on day 0 for the BN if using PNP and then day N other Configs.
@@TerryVinsonCCIEx2also, in our setup, on our sites, dnac will be in DC, then there is dmvpn wan inbetween, with dmvpn spoke routers ASR 1006 to which the cat 9500 will be connected acting as BN/CP nodes and they will be L3 handoff and we have 4 vrfs. How does the router and bn node connection configured ? For vrfs ? I believe mp bgp and on router side sub-interfaces ? If you could highlight on that, that would help.
I have problem with dhcp, sda client cannot receive ip from dhcp @@