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Category Archives for "Networking"

Openswitch OPX Installation on Linux

We have recently covered installation of Openswitch OPS on Linux. Since the version 2.0, Openswitch OPS has transformed into to a completely new project, called Openswitch OPX Base. Similar to its predecessor, OpenSwitch OPX Base system also provides an abstraction of hardware devices of network switch platforms in a Linux OS environment. However, original Yocto OS has been replaced by an unmodified Linux kernel based on Debian Jessie distribution.

We can install OPX Base on a virtual machine, similar to installing OpenSwitch on hardware platforms. A virtual machine (VM) uses the same software binaries as those executed on S6000-ON devices. The main difference is that the low-level device drivers for the SAI and SDI libraries are replaced with the packages that support hardware simulation, and interact with the hardware simulation infrastructure.

A host machine running Openswitch OPX VM might be Windows, or Mac OS X with at least 8GB of RAM and 100GB available disk space, and Virtual Box installed. The virtual machine needs to have one network interface configured for the Management interface (eth0). The network adapter eth0 corresponds to the first adapter attached to the VM, e101-001-0 to the second adapter and so on, and e101-00N-1 to Continue reading

Openswitch OPX Installation on Linux

We have recently covered installation of Openswitch OPS on Linux. Since the version 2.0, Openswitch OPS has transformed into to a completely new project, called Openswitch OPX Base. Similar to its predecessor, OpenSwitch OPX Base system also provides an abstraction of hardware devices of network switch platforms in a Linux OS environment. However, original Yocto OS has been replaced by an unmodified Linux kernel based on Debian Jessie distribution.

We can install OPX Base on a virtual machine, similar to installing OpenSwitch on hardware platforms. A virtual machine (VM) uses the same software binaries as those executed on S6000-ON devices. The main difference is that the low-level device drivers for the SAI and SDI libraries are replaced with the packages that support hardware simulation, and interact with the hardware simulation infrastructure.

A host machine running Openswitch OPX VM might be Windows, or Mac OS X with at least 8GB of RAM and 100GB available disk space, and Virtual Box installed. The virtual machine needs to have one network interface configured for the Management interface (eth0). The network adapter eth0 corresponds to the first adapter attached to the VM, e101-001-0 to the second adapter and so on, and e101-00N-1 to Continue reading

Openswitch OPX Appliances

OpenSwitch OPX Base is an innovative operating system for network systems. It uses an unmodified Linux kernel and standard distribution to take advantage of rich ecosystem, and also provide flexibility in customizing your system according to your network needs.

Note: Openswitch OPX images are customized with my after install script  and they are ready for use in GNS3.

Openswitch OPX 2.3.2
https://drive.google.com/file/d/1Vdpjoz53R7Rx1HYi8KcEuRuNvQnMMn0f/view?usp=sharing
https://sourceforge.net/projects/gns-3/files/VirtualBox%20Appliances/OpenswitchOPX-2.3.2.zip
https://www.4shared.com/s/fQu2DUd9dca

Openswitch OPX Appliances

OpenSwitch OPX Base is an innovative operating system for network systems. It uses an unmodified Linux kernel and standard distribution to take advantage of rich ecosystem, and also provide flexibility in customizing your system according to your network needs.

Note: Openswitch OPX images are customized with my after install script  and they are ready for use in GNS3.

Openswitch OPX 2.3.2
https://drive.google.com/file/d/1Vdpjoz53R7Rx1HYi8KcEuRuNvQnMMn0f/view?usp=sharing
https://sourceforge.net/projects/gns-3/files/VirtualBox%20Appliances/OpenswitchOPX-2.3.2.zip
https://www.4shared.com/s/fQu2DUd9dca

Linux Shell Tips and Tricks

A collection of useful tips and tricks for the linux shell that I have stumbled across over the years. I'll keep updating this post as I come across something of value. I use bash, so these apply to bash unless noted otherwise but my work in other shells. cat The cat command can be...

iNOG-10 & RIPE-Hackathon

In June 2018, I was lucky enough to attend the iNOG 10 session in Dublin, co-present a talk and also take part in the RIPE hackathon.

This post is a share on the experience. This isn’t because I’m running out of non-technical material, but this is to uncover both events for those that may want to attend, take part and experience what these kinds of sessions offer.

iNOG

The iNOG Irish Network Operators community surfaced briefly with events in 2005 (originally as the IENOG) but fell silent and was reborn in 2015 as the organisation
as it is today. Started by five returnees to Ireland and some economic migrants, the group has been seeing a high number of attendees to the events and over 700 members on Meetup! Not bad for something that came in on a started on a boat!!! (See below).

The group aims to deliver valuable content to the audience free of charge. Whilst ‘valuable’ has a variety of meanings depending on the audience, the general idea is to share experience of network based activities. As you can imagine, this is very wide ranging and just in the iNOG 10 session, talks were given on automation, data Continue reading

Check Out Our Newest Network Automation Course, Now Available On Our Streaming Site

We’ve just added a new Network Automation course, Network Automation with Ansible (v2), to our video library!



Instructor: Eric Chou

Course Duration: 4hrs 33min


Course Description

Ansible is quickly becoming the automation tool of choice for networking. This course aims to demystify Ansible and get you up and running with today’s technologies. After covering the basics, we’ll move on to the more advanced topics as they are applicable to network automation. This course will be cover the latest Ansible GA release 2.4 with some augments for upcoming development release 2.5.

Research: P Fat Trees

Link speeds in data center fabrics continue to climb, with 10g, 25g, 40g, and 100g widely available, and 400g promised in just a few short years. What isn’t so obvious is how these higher speeds are being reached. A 100g link, for instance, is really four 25g links bundled as a single link at the physical layer. If the optics are increasing in speed, and the processors are increasing in their ability to switch traffic, why are these higher speed links being built in this way? According to the paper under investigation today, the reason is the speed of the chips that serialize traffic from and deserialize traffic off the optical medium. The development of the Complementary metal–oxide–semiconductor, of CMOS, chips required to build ever faster optical interfaces seems to have stalled out at around 25g, which means faster speeds must be achieved by bundling multiple lower speed links.

Mellette, William M., Alex C. Snoeren, and George Porter. “P-FatTree: A Multi-Channel Datacenter Network Topology.” In Proceedings of the 15th ACM Workshop on Hot Topics in Networks, 78–84. HotNets ’16. New York, NY, USA: ACM, 2016. https://doi.org/10.1145/3005745.3005746.

The authors then point out that many data operators Continue reading

Qualcomm/Facebook gigabit Wi-Fi field trials to start in 2019

How should a company develop when its growth is dependent on availability of internet? Build out the internet is probably the answer. And that’s just what Facebook intends to do.The social network has just nabbed Qualcomm to help build its 2016-announced 60GHz urban Wi-Fi network, says Qualcomm. The chip maker recently announced that that the companies intend to start trials of the high-speed broadband solution sometime around mid-2019.“This terrestrial connectivity system aims to improve the speed, efficiency, and quality of internet connectivity around the world at only a fraction of the cost of fiber,” Qualcomm says in its release.To read this article in full, please click here