About Elliot Dierksen

Elliot Dierksen · 09-29-2025

I got an inter-fabric link to work between an External and Inter-Fabric Connectivity fabric and a Data Center VXLAN EVPN - iBGP. Now what I need is to create a link between two External and Inter-Fabric Connectivity fabrics, but the the option to cre...

Elliot Dierksen · 05-07-2025

I recall looking at this a while back and letting it go, but it is bothering me again. This is from spec sheet, but it doesn't make sense. There are 6 PCIe slots, MLOM, and MRAID. Where are slots 8, 9, and 10?

Elliot Dierksen · 02-20-2025

This came up in another thread, but I wrote an article on CLN describing how I deployed multi-cluster CER for two different customers. https://learningnetwork.cisco.com/s/article/cer-multi-cluster-design

Elliot Dierksen · 11-12-2024

I am having a hard time writing a query for a GetXMLDocumentData step. I was trying to model it off one in a previous script, but I am striking out. Here is the XML that was returned to me from a REST call. TEXT[<?xml version=\"1.0\" encoding=\"UTF-8...

Elliot Dierksen · 09-05-2024

I am working on an NDFC deployment for a customer and I have run into a road block regarding user authentication. The customer wants to use RADIUS to a windows NPS server for user authentication which makes sense. NDFC would prefer to use local crede...

Elliot Dierksen · 01-09-2026

You can copy the running config off to a place where you can edit the file. Then edit the file to remove what you don't want and copy it back directly to the startup config and reboot. I could suggest copying the current startup config to local stora...

Elliot Dierksen · 01-09-2026

@Kirk J is correct that you have to shut down ESXi and boot from the HUU to do the upgrade. As a Collab person, the order of the servers doesn't matter. You do need to make sure you give the ESXi host enough time to boot and start all the VM's after ...

Elliot Dierksen · 01-09-2026

I agree @Elliot Dierksen - - stp on its own without any of its enchantments applied should be enough to negate a loop but in reality other factors can prohibit that or slow it down, so applying these enchantments is a extra layer of insurance and ...

Elliot Dierksen · 01-09-2026

@Cristian Matei Perhaps this is an element of "under-promise and over-deliver", but I have been telling customers 30-60 seconds for STP to settle down after a topology change for years. The portfast issue and a loop never being detected happened more...

Elliot Dierksen · 01-07-2026

The aforementioned pain and suffering was quite some time ago. It was sufficiently painful that I never wanted to go there again. You could very well be correct that this is no longer an issue, but I don't think my old school take on this hurts anyth...

Member Since	‎05-12-2005 03:24 PM
Date Last Visited	‎01-12-2026 01:06 AM
Posts	1,617
Total Helpful Votes Received	2287

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NDFC 4.1.1 - unable to create inter-fabric links for External fabrics

Confusing slot assignment in C240-M5SX

CER Multi-Cluster Design

GetXMLDocumentData torture - V12.5

NDFC and RADIUS

Re: C8200 router write erase without losing HSEC enabled boot level

Re: Upgrade CIMC firmware of the Cisco UCS C220 M5

Re: BPDU Guard

Re: BPDU Guard

Re: BPDU Guard