Vendors that slapped API on top of their CLI are quick to claim that they SDN-enabled their boxes.
Not so fast. As I explained in SDN 101 webinar, programmable access to network devices is nice (less so when you're forced to use a vendor-specific API), but it's not SDN.
In the previous post we’ve had a look at how native OpenStack SDN works and what are some of its limitations. In this post we’ll tackle the first one of them - overhead created by multicast source replication.
Continue readingThe torrid growth projected for the SD-WAN market means that a ridiculous number of competitors will be able to sustain themselves for a long time.
The post SD-WAN Market Consolidation? Don’t Hold Your Breath appeared first on Packet Pushers.
The torrid growth projected for the SD-WAN market means that a ridiculous number of competitors will be able to sustain themselves for a long time.
The post SD-WAN Market Consolidation? Don’t Hold Your Breath appeared first on Packet Pushers.
Get the inside scoop on Interop Las Vegas.
Interop puts spotlight on how the job of a networking pro is evolving as software takes center stage.

Note: This article was originally published here.
In the previous post I covered the basics about setting up the OpenSwitch Appliance using GNS3. The setup was fairly simple: two switches connected to each other and exchanging LLDP packets. In this post we will setup a more elaborate network to simulate a DC fabric (although it may be a bit overkill of a setup). The setup will be the basis for the next posts about configuring this fabric using Ansible.
One of the first questions when setting up a complex topology with GNS3 that most people will do is: how do I connect it to the external world outside of the simulation? For VirtualBox machines that we are using, the options are limited. The one I found to work reliably across platforms was to use a NAT connection. This has the disadvantage that we have limited connectivity from the external world toward the internal network, but this could be also a security advantage to prevent accidental propagation of control protocols from our simulated environment.
Since the purpose of this lab is going to be to play with Ansible, we are going to need a Linux machine to run it. So, we will setup the following Continue reading
Interop keynote panelists advocate corporate commitment to a major IT culture shift.
Cisco's patent lawsuits played a role in the decision.