Today I have got a strange issue which I had never experienced with Aruba APs. Normally when you boot up an Aruba AP into an existing IAP cluster, it just joins the cluster but this time it didn’t. I have got the following error when I look into the system logs FIPS Warning: Failed to Read More »

All of a sudden things may start go wrong in your juniper switches and when you examine the logs you see the followings; What would you do? This is a bit of a challenging issue but in most of the cases I have experienced a loop or extreme traffic. To get a bit of more Read More »

I am currently deploying a Viptela vEdge 17.2.x series in my ESX lab however as soon as I fired up multiple vEdges I noticed CPU utilisation went through the roof. Server couldn’t handle 4-5 instances as each consumes around 8GHz. This was very familiar to me from virtual SRX experience due to continuous polling and Read More »

Check that stupid interface statistics first if things are god damn wrong One network guy says I thought it is better to write the summary of the ports first. I have had multiple layer 2 loops in my career and they were mostly disastrous. I think there is nothing more scary than a layer 2 Read More »

As a network engineer, you might receive a request from your colleagues probably Desktop team to configure network devices for PXE server. If you don’t know what PXE, how it works and configured, I will try to answer those questions on this post. Mostly I will focus on Windows imaging which I mostly configured devices Read More »

Normally if you want to advertise a route to your BGP neighbor, the route you want to announce must be available in your routing table but in Palo Alto Networks there is a nice trick which is quite handy. Where can it be really handy? For example you have a subnet which you only use Read More »