Dan Siemon

Articles written for the Preseem Blog 

WISPAmerica VMs and Networking Panel Talk

WISPAmerica VMs and Networking Panel Talk

We recently got back from another great WISPAmerica. The show gets bigger and more fun every year. This year I participated in the VMs vs. Hardware panel. I tried to explain the differences between bare metal, VMs, and containers at a high level. I view...

Packet Pushers, Congestion Control, QUIC and AQM

Packet Pushers, Congestion Control, QUIC and AQM

Packet Pushers recently published an interesting episode of the Heavy Networking podcast about QUIC. QUIC is a new transport protocol that is already used by Google and is currently being standardized by the IETF. Learning about QUIC alone is worthwhile for anyone...

Network Monitoring vs. Monitoring QoE

Network Monitoring vs. Monitoring QoE

Traditional network monitoring tools are not sufficient to ensure your network delivers a good user experience because they measure what is, at best, a proxy for the customer’s real network experience. This post explains the difference between traditional network...

Preseem and Sonar

Preseem and Sonar

Sonar is a popular ISP billing and OSS platform. Sonar will soon release version 1.4 which includes new functionality called Pulse which can automatically deduce the network topology associated with network elements managed by Sonar.I’m happy to be able to...

Long Aggregations are Misleading (Netflix Streaming vs. Reality)

Long Aggregations are Misleading (Netflix Streaming vs. Reality)

Due to the nasty flu that hit my family this past weekend, our household had an overdose of Netflix streaming. Looking at the Preseem charts for my home for those days, I was reminded how much value there is in metrics that are sampled at high frequency.To...

Network Metrics That Matter

Network Metrics That Matter

In a previous blog post, I wrote about the analogy of medical telemetry to network telemetry and the requirement for telemetry solutions to offer metrics at a high granularity (specific) and at short intervals (frequent). This post will explore which...

Network Monitoring is a Greyscale, Not Black And White

Network Monitoring is a Greyscale, Not Black And White

Traditionally, networks have been monitored through pinging or polling network elements such as routers and switches to determine if they are online or offline. This is often done at long intervals such as 1 or 5 minutes. This type of network monitoring enables the...

What is Network Telemetry?

What is Network Telemetry?

If you have a medical background or have had the misfortune to have spent time in a hospital, then the term telemetry may not be new to you. If this isn’t the case, then you may be wondering where the recent excitement about Network Telemetry comes...

Preseem + Sonar SoftwareAPI Screenshot