Disconnecting an active UCS KVM session

June 29, 2014 / Martijn / 0 Comments

If you use UCS Manager, this has probably happened to you once or twice. Something happened on your UCS environment and you need to get KVM access to a few blades to get things working again. Then you discover one of your colleagues has left his desktop or terminal server session running with a KVM sessions open to the blades you need and you get a “Send sharing request?” dialog. Send all the sharing requests you want, that colleague is enjoying his weekend and won’t respond to them.

The way you can get around this is to reset the KVM … Read more

Ultimate Cisco Nexus FCoE Configuration Guide

June 9, 2014 / Martijn / 8 Comments

This post is part of my CCIE Datacenter reference series and will cover all there is to get FCoE up and running on the Cisco Nexus 7k, 5k and 2k switches.

The text assumes you have a understanding knowledge of fundamentals (storage paths, flogis, vPC, etc) and can be used as a configuration reference (I basically wrote this for myself).

Installing & Enabling FCoE

Nexus 7K

Installing and enabling FCoE on the Nexus 7k involves getting the storage VDC up and running. This section will cover just that.

QoS

The Nexus 7k comes with a default QoS policy of default-nq-8e-policy, … Read more

Juniper SSG Double Dual Homed VPN

June 1, 2014 / Martijn / 0 Comments

This is going to be a lengthy post, one I’ve been wanting to do for a while, since there is not much information out there on this type of setup.

First off, let me explain the title real quick. “Juniper SSG Double Dual Homed VPN” means that we have 2 sites, e.g. branch and a main office and that both sites have two different internet connections for failover. We want to create a VPN between these 2 sites. It will look like this:

Juniper SSG firewall devices could be a perfect fit for a branch connecting to a main facility/datacenter. … Read more

CCIE DC Progress Sheet

April 9, 2014 / Martijn / 0 Comments

When working on a large project, I tend to make overview sheets for myself to track progress. My CCIE Datacenter project is no difference. I’ve been asked to share my CCIE Datacenter progress excel sheet a bunch of times now, so I figured I’d put it here: CCIE DC Progress Sheet

It has been put together with inspiration from other sheets and it assumes you have an INE subscription for their excellent videos.

VMware NSX: Configuring Load Balancing

March 1, 2014 / Martijn / 0 Comments

VMware NSX integrates networking into the virtual world. It also brings networking services to the in a distributed and much simpler fashion. One of those network services is load balancing. Using NSX, you can create virtual IP addresses which routes incoming network traffic to multiple real servers.

It works just like your regular hardware load balancer (F5, A10 Networks, etc), but in a distributed way and grouped by real servers on your computing hardware.

Making these network services virtual, means being able to deploy it very rapidly and easy. So easy, you can create a web load balancing cluster in … Read more

Design Guide – Deploying VMware NSX with Cisco UCS and Nexus 7000

February 13, 2014 / Martijn / 1 Comment

VMware has released a design guide for a network with NSX, Cisco Nexus 7000 and Cisco UCS computing. Perhaps it’s a small glueing attempt from VMware to Cisco, maybe it’s nothing. The thing is, I’m really happy about this design guide, there’ll be a FlexPod for NSX yet! 😉

Read it here: http://www.vmware.com/files/pdf/products/nsx/vmware-nsx-on-cisco-n7kucs-design-guide.pdf

The document outlines a few important tips:

Use separate links for the routing between NSX and the Nexus switches. As you don’t want to route over vPC.
Use DVS network shares to prioritise your traffic.
Make sure your MTU values are set properly.

It’s a very good … Read more

Replacing the UCS Central SSL Certificate

November 24, 2013 / Martijn / 0 Comments

The UCS Central appliance is on it’s way to be a proper centralized management platform for multiple UCS domains, but it’s not quite there yet. There are little simple things missing, such as custom SSL certificates. I had to get UCS Central using a proper SSL certificate the other day and couldn’t really find anything on how to do it. After figuring out how to do it, I decided to document it here!

I’m not getting into how you can generate a SSL private key, there are plenty of other tutorials covering those things. You’ve got two options; generate the … Read more

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