Author Archives: RedNectar Chris Welsh

About RedNectar Chris Welsh

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

MS Community Robot Finds Word Tables Offensive

I posted this question on the Micsoft Community board and in the course of the following discussion, I posted this picture of a MS Table with the Language incorrectly set. But suddenly, it was removed from my discussion.  Replaced by … Continue reading

Posted in Microsoft, opinion, rant | Leave a comment

RedNectar’s Hyperflex Pre-Install Checklist (Updated)

Completing Cisco’s Pre-installation Checklist for Cisco HX Data Platform will capture all the information you need, but not necessarily in the order you need it, and for a single site only. So, I decided to write a version that gets … Continue reading

Posted in Cisco, Hyperflex, UCS, VLANs | Tagged | 1 Comment

Resolution Immediacy and Deployment Immediacy – ACI Master Class

When configuring ACI, have you ever wondered what those Resolution Immediacy options [Immediate | On Demand | Pre-provision] and the Deployment Immediacy options [Immediate | On Demand] do? Continue reading

Posted in Access Policy Chain, ACI, ACI Tutorial, Cisco, Master Class, Nexus 9000 | Tagged , , ,

ARP Gleaning – ACI Master Class

The purpose of these Gleaning ARPs is simply to “tickle” the target station into sending a packet – not because the gateway needs the MAC address of the target! Continue reading

Posted in ACI, ACI Tutorial, Cisco, Master Class | Tagged , , , | 7 Comments

An Epyc new addition to the UCS Family!

Originally posted on UCSguru.com:
? Back in February of this year, when I read an article in The Register, announcing that Raghu Nambiar, the then chief technology officer for UCS servers had joined AMD. I didn’t think too much of…

Posted in GNS3 WorkBench

Backup Plan

Found this in a hotel tonight. Always good to have a backup plan

Posted in GNS3 WorkBench | Tagged

Why Easter doesn’t it fall at different times in different time zones

This year for example, tonight’s full moon occurs after midnight in places between the International date line and the UTC+11 time zone. So according to the formula, Kiwi kids should have to wait another week before breaking open those chocolate eggs. Continue reading

Posted in blog, opinion