Cumulus Networks Blog

Cumulus Linux Switch Monitoring with Datadog

As a Linux platform, one of the cool things is that we often don’t have visibility into how customers use their switches running Cumulus Linux. They buy HCL-compatible hardware from our partners, and with some training and enablement, are off to the races. The idea for running Datadog in Cumulus Linux came about for the … Continue reading Cumulus Linux Switch Monitoring with Datadog

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The Facts Behind the Myth

I hate getting into lengthy discussions regarding open networking (or bare-metal) pricing as there are benefits other than price. However, with so many people trying to understand the industry transition, I feel compelled to jump in when I see confusing information. Forrester analyst Andre Kindness recently published a report called The Myth of White-Box Network … Continue reading The Facts Behind the Myth

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Cumulus Networks, sFlow and data center automation

 Cumulus Networks and InMon Corp have ported the open source Host sFlow agent to the upcoming Cumulus Linux 2.1 release. The Host sFlow agent already supports Linux, Windows, FreeBSD, Solaris, and AIX operating systems and KVM, Xen, XCP, XenServer, and Hyper-V hypervisors, delivering a standard set of performance metrics from switches, servers, hypervisors, virtual switches, and virtual … Continue reading Cumulus Networks, sFlow and data center automation

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Cumulus Networks Support — Community Style

Sometimes, it’s not what you know, it’s who you know. Today we launch a new method of support to the Cumulus Networks family, a community question and answer site. This is a place where you can ask either a simple question for which you couldn’t find an answer, or maybe something you’ve always wanted to … Continue reading Cumulus Networks Support — Community Style

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Open Hardware that Just Runs

When you buy a server, you don’t worry whether or not Windows will run on the server.  You know it will. That’s because the server industry has a comprehensive solution to a hard problem: rapid, standard integration between the OS and underlying open hardware.  They’ve made it ubiquitous and totally transparent to you. This is … Continue reading Open Hardware that Just Runs

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Striking Gold with Copper in the Data Center

10G Ethernet (10GbE) is a very popular interconnect technology in today’s data center. It’s widely used for servers/storage devices connecting to top-of-rack (leaf) switches, as well as connecting those leaves to the aggregation (spine) switches. According to a Dell’Oro Ethernet Switch Market report published in 2014, 80% of server connections will be 10GbE-based by 2018. … Continue reading Striking Gold with Copper in the Data Center

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SCALE13x – My talk: Switch as a Server

This past weekend, I had the opportunity to speak at SCALE13x in Los Angeles, on the Switch as a Server — treating your network switches in the same way you treat your servers.  It’s a topic I feel very strongly about! As strong as my feelings are about open networking, I also love non-automotive forms … Continue reading SCALE13x – My talk: Switch as a Server

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Introducing Redistribute Neighbor

The existing landscape Are we feeding an L2 addiction? One of the fundamental challenges in any network is placement and management of the boundary between switched (L2) and routed (L3) fabrics. Very large L2 environments tend to be brittle, difficult to troubleshoot and difficult to scale. With the availability of modern commodity switching ASICs that … Continue reading Introducing Redistribute Neighbor

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Network Infrastructure at Faithlife

The network infrastructure powering Faithlife has seen a massive transformation in the last eighteen months. We’re really excited about all the cool new changes, and the measurable impact they’ve had on our employees, customers, and the products / features we’re able to offer. Given that, we thought that sharing our solution was a fun way … Continue reading Network Infrastructure at Faithlife

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Guest Blog: REST API for Cumulus Linux ACLs

RESTful control of Cumulus Linux ACLs included a proof of concept script that demonstrated how to remotely control iptables entries in Cumulus Linux.  Cumulus Linux in turn converts the standard Linux iptables rules into the hardware ACLs implemented by merchant silicon switch ASICs to deliver line rate filtering. Previous blog posts demonstrated how remote control of … Continue reading Guest Blog: REST API for Cumulus Linux ACLs

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