GNS3 “Not enough space on flash to store vlan database”

GNS3 is a great application for practice, training and simulating network designs/changes when you don't have the luxury of a proper lab or dev environment. I came up against an issue today on a lab I had built for test purposes. I had already done the basic configuration for a bunch of routers, switches and hosts,... Continue Reading →

SD-WAN with Citrix Cloudbridge

SDN is a technology that I'm interested in but I've yet to get my hands dirty, being a 'Citrix Guy', I've been looking at their SD-WAN solution using Cloudbridge. I wasn't fortunate enough to make this years Citrix summit in Las Vegas but I enjoyed this demo of it in action, albeit a 'wee' bit cheesy...  check... Continue Reading →

VMware vCenter IP Change – 503 Service Unavailable

One of my clients had endless issues with a problematic vCenter server running on Windows Server 2008R2. I recommended the vCenter appliance (vCenter 6 Update 1) and subsequently got asked to do the work... all went to plan, but I got a call a few weeks later to say it stopped working following a relativity... Continue Reading →

How to add additional local storage to Xenserver 6.5 post install

At the tail end of last year I decided to run up a lab for testing Machine Creation Services using Xenserver 6.5 in preparation for a project I had in the pipeline. My lab is currently running vSphere 6 so I decided to nest a Xenserver 6.5 host inside the EXS host. I quickly found... Continue Reading →

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