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  • What happens to packets with a VMware vSphere Distributed Switch?

    calendar Dec 26, 2022 · 4 min read · VMWare Home Lab Datacenter Networking Routing & Switching Studies  ·
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    Distributed Virtual Port-Groups (dvPGs) in vSphere are a powerful tool for controlling network traffic behavior. vSphere Distributed Switches (vDS) are non-transitive Layer 2 proxies and provide us the ability to modify packets in-flight in a variety of complex ways. Note: Cisco UCS implements something similar with …


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  • Gathering and Using Data from Cisco NX-OS with Ansible Modules

    calendar Oct 15, 2022 · 5 min read · Cisco NX-OS Datacenter Networking Continuous Delivery Ansible Design Patterns Network Automation  ·
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    Reliably executing repetitive tasks with automation is easy (after the work is done) Given enough work, self-built automation can be easy to consume. Non-consumers (engineers) need to focus on reliability and repeatability, but occasionally there's an opportunity to save time and simplify lives directly. Information …


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  • Scale datacenters past the number of VLAN IDs with NSX-T Tier-0 and Q-in-X

    calendar May 22, 2022 · 4 min read · VMWare Layer 2 Datacenter Networking Routing & Switching Studies NSX-T Design Patterns Network Automation  ·
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    VMware introduced the ability to double-encapsulate layer 2 frames in via the "Access VLAN" option for VRF instances in NSX Data Center: https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.2/administration/GUID-4CB5796A-1CED-4F0E-ADE0-72BF7B3F762C.html Q-in-VNI provides a capable infrastructure engineer the …


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  • Different Methods to carry 802.1q tags with VMware vDS and NSX-T

    calendar May 6, 2022 · 3 min read · VMWare Home Lab NFV Datacenter Networking NSX-T Programmability Design Patterns Network Automation  ·
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    VMware's vDS is a bit of a misnomer In a previous post, I covered the concept of transitivity in networking - but in Layer 2 (Ethernet) land, transitivity is critically important to understanding how VMware's Virtual Distributed Switch (vDS) works. The statement "VMware's Virtual Distributed Switch is not a …


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  • Network Experiments with VMware NSX-T and Cisco Modeling Labs

    calendar Apr 29, 2022 · 4 min read · VMWare Home Lab Datacenter Networking Routing & Switching Studies Programmability Network Automation  ·
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    Cisco Modeling Labs (CML) has turned out to be a great tool for deploying virtual network resources, but the "only Cisco VNFs" limitation is a bit much. Let's use this opportunity to really take advantage of the capabilities that NSX-T has for virtual network labs! Overview For the purpose of lab …


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  • Vendor interoperability with multiple STP instances

    calendar Apr 17, 2022 · 5 min read · Home Lab Layer 2 Datacenter Networking Spanning-Tree Routing & Switching Studies Design Patterns  ·
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    Spanning Tree is the all-important loop prevention method for Layer 2 topologies and source of ire to network engineers worldwide. Usually IT engineers list the Dunning-Kruger Effect in a negative context, depicting an oblivious junior or an unaware manager, but I like to focus on the opposite end of the curve with …


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  • Cisco Modeling Labs

    calendar Mar 26, 2022 · 3 min read · Linux Home Lab Cisco NX-OS NFV Datacenter Networking Routing & Switching Studies Programmability Design Patterns Network Automation  ·
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    Ever wonder what it would be like to have a platform dedicated to Continuous Improvement / Testing / Labbing? Cisco's put a lot of thought into good ways to do that, and Cisco Modeling Labs(CML) is the latest iteration of their solutions to provide this as a service to enterprises and casual users alike. CML is the …


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  • Cloud-Scale Networking: NSX Datacenter Hierarchical Tier-0s, blending telecom with cloud

    calendar Mar 12, 2022 · 7 min read · eBGP VMWare Datacenter Networking BGP NSX-T Programmability Design Patterns Network Automation  ·
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    VMware's NSX Datacenter product is designed for a bit more than single enterprise virtual networking and security. When reviewing platform maximums (NSX-T 3.2 ConfigMax), the listed maximum number of Tier-1 routers is 4,000 logical routers. Achieving that number takes a degree of intentional design, however. When …


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  • Bogons, and how to leverage public IP feeds with NSX-T

    calendar Jan 16, 2022 · 3 min read · Network Security Datacenter Networking Python Routing & Switching Studies BGP NSX-T Design Patterns  ·
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    Have you ever wondered what happened to all the privately-addressed traffic coming from any home network? Well, if it isn't explicitly blocked by the business, it's routed, and this is not good. Imagine what data leakage can occur when a user mistypes a destination IP - the traffic goes out to the Service Provider, who …


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  • The winds of change in cloud operations, and why integrations like NSX Data Center 3.2 + Advanced Load Balancer are important

    calendar Dec 26, 2021 · 4 min read · Load Balancing VMWare Datacenter Networking Avi NSX-T  ·
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    **Note: This feature has been deprecated by VMware The Jetstreams Cloud operators now provide two completely different classes of service to customers: Self-Service, VMs, Operating System Templates Generally mature, some private cloud operators are smoothing out CMPs or such, but work as intended from a customer …


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ENGYAK.co

A blog about IT

Disclaimer

The opinions expressed on this site are my own personal opinions and do not represent my employer’s view in any way.

Recent Posts

  • Automate Cisco IOS/IOS-XE documentation with Ansible (with examples)
  • Document Networks as Code with D2!
  • Document vSphere as Code with D2!
  • Diagram as Code with D2!
  • Enable ToFU (Trust on First Use) with OpenSSH
  • Deploy vSphere VMs with Ansible!
  • Why Automate? VM Deployment with vSphere's REST API
  • What happens to packets with a VMware vSphere Distributed Switch?

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