automation, networking, worklife
Learning to Love Codenames
One of the things I struggled with when starting at a vendor was dealing with project codenames. There is no secret decoder ring - you have to learn the names the...
25 Jan 2016
Modifying Packet Captures with tcprewrite
Recently I wanted to look at the structure of sFlow packets. Of course I can read the specs, but it’s often easier to look at some real packets. So I set...
15 Jan 2016
NZ IPv6 & DNSSEC Update
A year ago I published a table of New Zealand ISP IPv6 support. At the time support was fairly poor. I’m pleased to report that things have gotten better over the...
11 Jan 2016
Brocade VDX SNMP Changes
Brocade tightened up some SNMP settings with NOS 6.0.x. This improves security, but it also means that you will need to modify your configuration if you upgrade. If you don’t,...
02 Dec 2015
Using InfluxDB + Grafana to Display Network Statistics
I loathe MRTG graphs. They were cool in 2000, but now they’re showing their age. We have much better visualisation tools available, and we don’t need to be so aggressive...
26 Oct 2015
Sit Stand Desk Setup
I work from home these days. Therefore it’s important that I have a decent desk setup. My previous setup was pretty crappy, but I only worked from home part-time. I’ve...
12 Oct 2015
Brocade BNA API
Brocade Network Advisor (BNA) has a REST API for accessing Fibre Channel-related data. The documentation includes a sample Python script showing how to connect to the API to retrieve Fabric info....
09 Oct 2015
War Stories: Closing out Projects
This article is Part 10 in a 12-Part Series. Part 1 - War Stories: Loops that Permanently Broke the Network Part 2 - War Stories: Switches Lying about Duplex Mismatches...
27 Sep 2015
IPv6-based Wi-Fi Hotspots
Apple’s 2015 WWDC event included a great session on IPv6 & TCP changes coming with iOS 9. There is a related post to the IETF v6ops mailing list here. The...
14 Sep 2015
Stretching the Container Metaphor
The Docker/shipping container metaphor is overdone. I don’t think people have fully thought through what it might mean if containers do the same thing to computing as they did to shipping....
24 Aug 2015
War Stories: ITIL Process vs Practice
This article is Part 9 in a 12-Part Series. Part 1 - War Stories: Loops that Permanently Broke the Network Part 2 - War Stories: Switches Lying about Duplex Mismatches...
17 Aug 2015
Brocade PyNOS Python Libraries
PyNOS v1.1 has been published. This is a python library that simplifies automating Brocade VDX systems. It is built on top of ncclient, and uses NETCONF to communicate with the VDX...
11 Aug 2015
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