Networking

Updating SSL Certificates for CML
May 3, 2026 · 11 min read · Cisco CML Networking Certificates SSL Automation Tech Tips ·
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If you have a Cisco Modeling Labs appliance in your lab or running on a piece of dedicated hardware, you have probably noticed two browser warnings every time you log in. CML ships with self-signed certs on both the main web UI and the Cockpit management UI, and your browser will complain about both. Cisco publishes an …

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Why CML Earned a Permanent Spot in My Workflow
Apr 22, 2026 · 11 min read · Cisco Networking CML Lab ·
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If you are a network engineer who has ever stared down a change window and wished you could test the exact topology before touching production, this post is for you. I want to walk through why Cisco Modeling Labs (CML) has become one of the most used tools in my day to day, and how it has shaped the way I approach …

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Issues with DCBX and LLDP on NX-OS 10.x
Mar 14, 2025 · 6 min read · Cisco Nexus Networking AHV Bug Home Lab Tech Tips PSA ·
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I recently deployed a new Nexus 93180YC-EX switch into my home lab, to replace the aging 9372PX. Sure, for a home lab this was fine, but I wanted to get up to some 25Gbe speeds! I've got various equipment connected to that old Nexus, with 2 Nutanix clusters and single VMware cluster, plus various other things, nothing …

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Weekly Tech Tip: Check your FEC!
Jul 26, 2024 · 6 min read · Cisco Nexus Cohesity FEC Networking Tech Tips ·
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Connectivity issues between Cohesity C5016 Nodes and Nexus 93180YC-FX3H Switches Very recently, I was deploying a new Cohesity C5016 appliance with 25Gb NICs, connecting up to a pair of Nexus 93180YC-FX3H switches. When using the 9K's in a VPC pair, my personal preference is to configure the Cohesity nodes with LACP to …

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Deploying Nutanix and Mellanox - Part 2
Sep 21, 2016 · 7 min read · Nutanix AOS AHV Mellanox Networking Tech Tips ·
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Welcome back to my Nutanix and Mellanox blog series! In Part 1, I went through the process of setting up the "Technology" tags: "acropolis" "ahv" "mellanox" "nutanix" "networking" "configuration" Welcome back to my short series on our journey of testing Nutanix and Mellanox. Following up on Part 1 of the Nutanix and …

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Deploying Nutanix and Mellanox - Part 1
Sep 19, 2016 · 3 min read · Nutanix AOS AHV Mellanox Networking Tech Tips ·
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As I wrote about in the last post that started our journey with Nutanix and Mellanox, we will be testing AHV DR replication for one of our partners while evaluating the use of the Mellanox SX switch platform for a lower cost 10/40Gbe switch. The NX-1050 Block was pre-configured at another location, so all network …

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Nutanix and Mellanox: A Journey in Integration
Sep 18, 2016 · 2 min read · Nutanix AOS AHV Mellanox Networking Testing ·
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I’ve been given the opportunity to do some testing with 2 Nutanix blocks and a Mellanox SX1012 switch for one of our customers, who is looking to do some disruptive changes to the platform they deploy their software onto. Background Currently, we partner with this customer to do your typical 3-Tier infrastructure …

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