About Sylvain_Che

Sylvain_Che · 04-09-2025

Hello, In our SDA Fabric, we deployed some switches without LAN Automation. This manual underlay is built using SVIs and the Fabric Edge uplinks are L2 trunks. On those switches we are carrying non-SDA VLANs, with default gateway being located outsid...

Sylvain_Che · 11-14-2024

Hi, For testing purpose I previously added an AP ("AP-2" to Catalyst Center/DNAC, performed some actions on it (Site Assignment, Provisioning, etc.). I then removed the AP-2 from the Inventory and performed a factory reset. When the AP-2 re-joins the...

Sylvain_Che · 09-04-2024

Hi, What is the reason DNAC reconfigures from time to time the SNMP and logging settings (I identified at least these 2 features)? I see this on several DNAC deployments. Without visible reason to me, DNAC removes for example the "logging source-inte...

Sylvain_Che · 08-22-2024

Hi, I'm running DNAC Virtual Appliance 2.3.7.4-75326 and I'd like to upgrade to 2.3.7.6-75360. Download starts and goes up to 69.25% but finally fails. Retried several times already. Only 2 applications are downloaded, all others fail. I tried to dow...

Sylvain_Che · 08-21-2024

Hello, I have some routers in my network configured with "ntp source Loopback99". These routers are managed in DNAC via this Lo99 interface. When I provision the routers for the 1st time via DNAC (no specific template applied), DNAC changes the NTP...

Sylvain_Che · 05-15-2025

Yes I posted the reply already.

Sylvain_Che · 04-10-2025

@jedolphi : Sure, I'll contact you privately. Make a Wish already sent, and the 'None' authentication with dummy template already tried. It works until CatC pushes again its Intent-based configuration, defined in WebUI. @Andrii Oliinyk : The full pic...

Sylvain_Che · 04-09-2025

@jedolphi : 1. Some of the L2 segments cannot be moved to L2VNI or makes no sense to move them. And L2 loops would occur in current situation if we move those segments to L2VNI because the links between switches (Edge<->Border) are trunk links and th...

Sylvain_Che · 04-09-2025

STP is not my problem here. STP is running fine for these non-SDA VLANs. L2 Loops would occur if L2VNI were deployed to accomodate those non-SDA VLANs. My concern is about Port Assignment and CatC erasing our manual config.

Sylvain_Che · 02-24-2025

Hi, You cannot unprovision a template. To remove the configuration pushed by the template on your network device you either have to do it manually, or through another template pushing the "no" form of the commands listed in your initial template. And...

Member Since	‎09-29-2016 05:42 AM
Date Last Visited	‎05-15-2025 02:23 AM
Posts	122
Total Helpful Votes Received	173

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Port Assignment for non-SDA VLANs

Remove Site Assignment for previously used AP

DNAC reconfigures SNMP & logging from time to time on network devices

Unable to download 2.3.7.5 and .6 from 2.3.7.4-VA.

Router provisioning changes NTP source interface

Re: Remove Site Assignment for previously used AP

Re: Port Assignment for non-SDA VLANs

Re: Port Assignment for non-SDA VLANs

Re: Port Assignment for non-SDA VLANs

Re: DNAC Un-provision template