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  • BGP Graceful Restart, some inter-platform oddities, what to do with it

    calendar Oct 12, 2019 · 6 min read · eBGP NSX-V Datacenter Networking iBGP Routing & Switching Studies BGP NSX-T  ·
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    Since most of NSX-T runs in a firewall mode of sorts, it's probably worthwhile to discuss on of the less well-known routing protocol features - Graceful Restart. As published for BGP, IETF RFC 4724 outlines a mechanism for "preserving forwarding traffic during a BGP restart." This definition may be a little …


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  • NSX-T 2.5 Getting Started, Part 2 - Service Configuration!

    calendar Oct 5, 2019 · 3 min read · eBGP VMWare Home Lab Datacenter Networking iBGP Routing & Switching Studies BGP NSX-T  ·
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    Now that the primary infrastructure components for NSX-T are in place, it is now possible to build-out the actual functions that NSX-T is designed to provide. A friendly suggestion, make sure your Fabric is healthy before doing this: NSX-T differs from NSX-V quite a bit here. Irregular topologies between edge routers …


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  • NSX-T 2.5 Getting Started, Part 1

    calendar Sep 29, 2019 · 3 min read · eBGP VMWare Home Lab Network Security Datacenter Networking Spine and Leaf iBGP Routing & Switching Studies BGP NSX-T  ·
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    Since NSX-T 2.5 just came out, it's about time to do a full rebuild and getting started guide. NSX-T differs greatly from NSX-V in that the initial setup is quite a bit more complicated and doesn't have many guardrails or direct paths to initial set-up. We'll be skipping the appliance deployment, because if you have …


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  • Spine and Leaf Networks, an Outline

    calendar Sep 21, 2019 · 1 min read · Datacenter Networking Routing & Switching Studies  ·
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    With the previous post, I covered traditional data center networking, and some of the reliability compromises made to accommodate typical workloads. Here I'll be outlining my take as a series of blog posts on the next iteration of data center network design, Spine and Leaf: Lab Diagram What came before Introduction: …


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  • NSX-T Datacenter 2.5 Upgrade Process and Preview

    calendar Sep 21, 2019 · 2 min read · VMWare Network Security NSX-T  ·
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    Now that NSX-T Datacenter 2.5 is downloadable, it's time to try this out in my home lab. First things first, if you log in more than 90 days out, you'll be locked out of the appliance completely. If you make any changes the normal linux way (passwd and chage) the appliance will automatically revert it in about a …


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  • NSX-T Datacenter 2.5 Released!

    calendar Sep 21, 2019 · 2 min read · VMWare Network Security NSX-T  ·
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    As of 19 September 2019, NSX-T 2.5 has been officially released and is available for download! It's been a bit since the announcement, so let's cover some of the new capabilities of interest with NSX-T 2.5. This is a summary of what I found interesting, the complete release notes are here NSX Intelligence VMWare will …


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  • Spine and Leaf Practical Applications, The IP Portability Problem

    calendar Jun 29, 2019 · 6 min read · Anycast OSPF Datacenter Networking Routing & Switching Studies BGP  ·
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    So far, this is all great, but it IS missing something Networks are useless unless you do something with it. In most cases, a device (in this case, we'll use a server) needs to connect via redundant links to a common Layer 2 segment. Why is this? Well, most servers are incapable of dynamic routing. Instead, the server …


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  • Spine and Leaf Practical Applications, EGP and IGP combined!

    calendar Jun 22, 2019 · 6 min read · eBGP IS-IS OSPF Datacenter Networking iBGP Routing & Switching Studies BGP  ·
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    So far, all examples to date have been extremely simple, and stand rather well on their own (OSPF Clos would work just FINE in a campus network if you have cheap L3) but may not effectively address some more advanced use cases. In short, we're about to enter niche territory. Generally speaking, BGP is regarded as the …


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  • Spine and Leaf Practical Applications, eBGP

    calendar Jun 8, 2019 · 8 min read · eBGP Datacenter Networking Routing & Switching Studies BGP  ·
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    Overview First off, here's the reference diagram (YAML): Assumptions about difficulty Most people I've met outside of the carrier space are pretty intimidated by BGP, as it is truly impressive in scope. Here, we're going to break-out BGP usage into two categories: iBGP: This is where all nodes have the same Autonomous …


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  • Switching Lab Topology Diagram

    calendar Jun 2, 2019 · 1 min read  ·
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    Here's the example topology used in the Spine-and-Leaf labs: (YAML)


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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

  • Escape Plato's Cave to build better IT infrastructure
  • 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
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  • Why Automate? VM Deployment with vSphere's REST API

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