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Network performance monitoring
Today, network performance monitoring typically relies on probe devices to perform active tests and/or observe network traffic in order to try and infer performance. This article demonstrates that...
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SC16 live real-time weathermaps
Connect to https://inmon.sc16.org/sflow-rt/app/sc16-weather/html/ between now and November 17th to see a real-time heat map of the The International Conference for High Performance Computing,...
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Monitoring at Terabit speeds
The chart was generated from industry standard sFlow telemetry from the switches and routers comprising The International Conference for High Performance Computing, Networking, Storage and Analysis...
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IPv6 Internet router using merchant silicon
Internet router using merchant silicon describes how a commodity white box switch can be used as a replacement for an expensive Internet router. The solution combines standard sFlow instrumentation...
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Monitoring Linux services
Mainstream Linux distributions have moved to systemd to manage daemons (e.g. httpd, sshd, etc.). The diagram illustrates how systemd runs each daemon within its own container so that it can maintain...
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Using Ganglia to monitor Linux services
The screen capture from the Ganglia monitoring tool shows metrics for services running on a Linux host. Monitoring Linux services describes how the open source Host sFlow agent has been extended to...
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Telegraf, InfluxDB, Chronograf, and Kapacitor
The InfluxData TICK (Telegraf, InfluxDB, Chronograf, Kapacitor) provides a full set of integrated metrics tools, including an agent to export metrics (Telegraf), a time series database to collect and...
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QUIC
A QUIC update on Google’s experimental transport describes some of the benefits of the QUIC (Quick UDP Internet Connections) protocol that is now the default transport when Google's Chrome browser...
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Nutanix
Maximum Performance from Acropolis Hypervisor and Open vSwitch describes the network architecture within a Nutanix converged infrastructure appliance - see diagram above. This article will explore how...
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Arista EOS telemetry
Arista EOS switches support industry standard sFlow telemetry, enabling hardware instrumentation supported by merchant silicon to export hardware interface counters and flow data. The latest release of...
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Remotely Triggered Black Hole (RTBH) Routing
The screen shot demonstrates real-time distributed denial of service (DDoS) mitigation. Automatic mitigation was disabled for the first simulated attack (shown on the left of the chart). The attack...
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BGP FlowSpec on white box switch
BGP FlowSpec is a method of distributing access control lists (ACLs) using the BGP protocol. Distributed denial of service (DDoS) mitigation is an important use case for the technology, allowing a...
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Real-time DDoS mitigation using sFlow and BGP FlowSpec
Remotely Triggered Black Hole (RTBH) Routing describes how native BGP support in the sFlow-RT real-time sFlow analytics engine can be used to blackhole traffic in order to mitigate a distributed denial...
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Arista eAPI
The sFlow and eAPI features of EOS (Extensible Operating System) are standard across the full range of Arista Networks switches. This article demonstrates how the real-time visibility provided by sFlow...
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Linux 4.11 kernel extends packet sampling support
Linux 4.11 on Linux Kernel Newbies describes the features added in the April 30, 2017 release. Of particular interest is the new netlink sampling channel:Introduce psample, a general way for kernel...
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Cumulus Linux 3.4 REST API
The latest Cumulus Linux 3.4 release include a REST API. This article will demonstrate how the REST API can be used to automatically deploy traffic controls based on real-time sFlow telemetry. DDoS...
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Troubleshooting connectivity problems in leaf and spine fabrics
Introducing data center fabric, the next-generation Facebook data center network describes the benefits of moving to a leaf and spine network architecture. The diagram shows how the leaf and spine...
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Real-time traffic visualization using Netflix Vizceral
The open source sflow-rt/vizceral project demonstrates how real-time sFlow network telemetry can be presented using Netflix Vizceral. The central dot represents the Internet (all non-local addresses)....
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Flow Trend
The open source sflow-rt/flow-trend project displays a real-time trend chart of network traffic that updates every second. Defining Flows describes how to break out traffic by different traffic...
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Real-time visibility and control of campus networks
Many of the examples on this blog describe network visibility driven control of data center networks. However, campus networks face many similar challenges and the availability of industry standard...
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