Author Archives: RedNectar Chris Welsh

About RedNectar Chris Welsh

Professional IT Instructor. All things TCP/IP, Cisco or Data Centre

Hyperflex Post Install script fixer

The hx_post_install script that is used during the Cisco HyperFlex install process does NOT work the way it should. The fix is as easy as cut-and-paste the following into your ssh session. Continue reading

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Webex multi-screen support – where is it Cisco?

I’d like Cisco to move to a default two window model when screen sharing is active Continue reading

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Cisco has re-vamped their ACI Docs pages. Here’s what I think.

What Cisco has done is given us not just a prettier version, but in many cases more useable too Continue reading

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ACI and the HyperFlex Hiccup Cure

In this post I’ll show you how I reduced that failover time for HyperFlex Connect to about one minute. Continue reading

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ACI and the HyperFlex Hiccup

the problem relates to how Cisco HyperFlex uses a floating IP address across multiple Storage Controller VM MAC addresses, and how ACI maintains the IP to MAC address table Continue reading

Posted in ACI, Best Preactices, Cisco, GNS3 WorkBench, Hyperflex | Tagged , , | 3 Comments

Rednectar’s Rules for writing Lab Guides

I wrote these as a guide for lab writers whose work I get to review and are in the context of writing lab guides using the frustrating wordprocessor known as Microsoft Word. It is meant to be a set of … Continue reading

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How to schedule Hyperflex Scheduled Snapshots

When upgrade your Hyperflex plugin, you’ll find that the Schedule Snapshots option has GONE Continue reading

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New APIC ACI 5.1 firmware – Cisco have gone colloquial

This is an absolute affirmation that Cisco only cares about North American users Continue reading

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Making the most of ACI when routing between tenants via a Firewall

I’ll show you how you can enhance your ACI migration by using some ACI features that are practically impossible to implement on L3 Firewalls Continue reading

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ACI Version mismatch Alert. Don’t use v5 on APIC and v14 on Leaves

If you are stuck with some first-generation switches in your ACI fabric, you might be tempted to upgrade your APIC to version 5.x – maybe even attempt to upgrade your leaf switches to the companion v15.x. Let me tell you why you don’t want to do that. Continue reading

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