Quality of Service [Part 3]: Nexus 1000v – The Servers are Doing QoS Now?!?
I’m going to talk a little bit about performing QoS functions from within the Nexus 1000v. Since it’s been awhile since I made the last post in this series, a recap is in order: In my first post, I explained what the different types of QoS policies were in the context of Cisco’s MQC In [...]
Open Source Switching
There’s been a ton of attention lately around the concept of using commodity hardware in an area of the industry that is currently dominated by proprietary ASIC-based solutions – networking. When it comes to crossing paths between open source and networking, the obvious low-hanging fruit has been software-based switching solutions like Open vSwitch, or cool [...]
SDN Use Case: End-to-End QoS
Just a little unicorn-y brainstorming today. This post is in some ways an extension of my earlier post on the importance of QoS in a converged environment like FCoE or VoIP (or both). This will be a good example of a case where SDN very efficiently solves a policy problem that is present in an unfortunately [...]
Virtual Routing [Part 3 - The Use Case]
Moving along in my “Virtual Routing” series, I’d like to switch gears and talk a little more “big picture”. In the previous posts, we’ve discussed a few different things: Part 1 – A first look at the CSR 1000v from Cisco Part 1.9 – An examinations of using FHRPs in a virtual environment Part 2 [...]
ESXi vSwitch Load Balancing Woes
There are a million articles out there on ESXi vSwitch Load Balancing, many of which correctly point out that the option for routing traffic based on IP Hash is probably the best option, if your upstream switch is running 802.3ad link aggregation to the ESXi hosts. It offers minimal complexity, while also providing the best [...]
Virtual Routing [Part 2 - Router Redundancy in VMware vSphere]
My post a few weeks ago about the CSR 1000v made a pretty big splash – it’s clear that the industry is giving a lot of attention to IP routing within a virtual environment. No doubt, Vyatta is largely credited for this, as they’ve been pushing this idea for a long time. When Brocade announced [...]
