Lindsay Hill automation, networking, product management

Vendor Clubs: Watch Your Independence

Vendor ‘clubs’ or programs have troubled me for some time. They are not all bad, but I am concerned about the influence that vendors are trying to exert, and the effect this has on the standings of respected people in the social media communities. I fear we are selling our independence too cheaply.

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Technician vs Consultant Writing

Many engineers struggle with business writing. They get easily lost in detail, and produce tortured documents that are technically correct, but of little business value. This is classic “technician” or “engineer” writing. Here’s some guidance for producing “Consultant”-style documents will be far more use to the organisations you’re working with.

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SNMP Community Strings - Don't Use '@'

A quick reminder - do not use the symbol ‘@’ in SNMPv1/2 community strings. I came across this again this week - it causes issues with monitoring some equipment, and should be avoided.

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War Stories: Check Point Meltdown

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CCIEv5 DIAG Thoughts

The CCIE Routing & Switching v5 blueprint introduces a new module in the lab exam: DIAG. This section does not have any direct device access, but instead uses a variety of information sources, including some console output.

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ScienceLogic Database HA & DR

Previously I’ve looked at the overall ScienceLogic architecture, and HA options for the Collectors and UI. This post looks at DR and HA options for the core Database layer - the heart of the ScienceLogic system.

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ScienceLogic - Collector and UI HA

Earlier I looked at the basics of ScienceLogic EM7 architecture. I didn’t cover how to achieve HA or DR with ScienceLogic. The architecture offers a few options for doing this, at each of the three layers - Collectors, UI and DB. In this post I’ll cover some HA options for the Collectors and the UI.

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IPv4 Address Transfer Process

IPv4 exhaustion is a real issue for large parts of the world. IPv6 is the long-term solution, but it doesn’t solve today’s problems facing ISPs. Alternatives are needed - either CGN, or purchasing more IPv4 blocks on the open market. Recently I’ve been involved in the purchase & transfer process - here’s my notes on how it works within the APNIC region.

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HP Simware - Comware OS Simulator

HP recently released “Simware”, a Comware network simulator that lets you create test networks of emulated Comware switches and routers. This can be used to create “virtual” networks, ideal for learning, feature validation, and change testing. It’s broadly similar to Dynamips. It’s not perfect, and it’s been a long time coming, but it’s a start.

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SolarWinds DPI - Looks Interesting

[UPDATE 26/6/14] This code is now available as a Release Candidate.

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