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How Netflix uses eBPF flow logs at scale for network insight

Netflix Tech

Cloud Network Insight is a suite of solutions that provides both operational and analytical insight into the cloud network infrastructure to address the identified problems. The choice of transport protocols like GRPC, HTTPS & UDP is runtime dependent on characteristics of the instance placement.

Network 131
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Scaling BGP Peering in Kentik's SaaS Environment

Kentik

BGP can enrich network traffic data to visualize traffic per BGP path for peering analytics and also to inject routes that enable DDoS mitigation capabilities such as RTBH and Flowspec. Moreover, each BGP session can be used as the transport to push mitigations , such as RTBH and Flowspec, triggered by alerting from the platform.

IPv6 13
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NetFlow, sFlow, and Flow Extensibility, Part 1

Kentik

But then the network ops and architecture folks, who at the time were mostly limited to looking at SNMP totals, asked for a mechanism by which these flow records could be exported so that they could be used for network analytics. Even at the dawn of flow analytics, people were interested in many different kinds of “behind the SNMP” views.

IPv6 40
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NetFlow, sFlow, and Flow Extensibility, Part 2

Kentik

You could take the well-known data types like IPv4 and IPv6 and build a fast path for them. With templates out-of-band, the protocol would also be ‘re-sample-able’ in transport. Most of the data systems that primarily store JSON natively would melt if you tried to do flow analytics with them.