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Using OmniFocus for CCDE Study

A reader asked how I use OmniFocus to help with studying for certification exams. Here’s how I’m using OmniFocus to help with CCDE study. This may not be the ‘best’ way, but it’s what I use. Figure out your tasks Create a new Project in OmniFocus. Go through your usual sources of information for certification study […]

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Network Field Day 8 – I’m Going!

I am lucky enough to be invited to attend Network Field Day 8 this September, in Silicon Valley. For 3 days, I get to hang out with some of the smartest people in this industry, talking about the latest products and developments in networking. How cool is that? What’s a Tech Field Day/Network Field Day? Most of […]

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No Alarms May Not Mean No Problems

Network monitoring is often a reactive process. Engineers see an alarm, and take action. Alarms mean someone broke something, and it needs attention. Deal with the alarms, and all will be well. No alarms == Good. But every now and then no alarms means that monitoring is broken. Here’s an example of where this happened, and what […]

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Who Said Comments Are Dead?

We don’t see as many comments on blog posts these days, as most discussion has moved to other forums, such as Twitter or Google+. But this doesn’t mean that comments are completely dead. In his book on Technical Blogging, Greg Ferro says that comment volumes have dropped over the last few years: “Five years ago I […]

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HPN Script Repository on GitHub

Dobias van Ingen is working to get an HP Networking scripting community together. This is to take advantage of various HPN scripting capabilities, such as: Comware 7 provides support for Python and TCL Comware 7 also provides support for NETCONF IMC provides extensive eAPI support HP VAN SDN controller provides API support There is now […]

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SNMP Counters – Collection Interval Variation

Counter data types are commonly used in SNMP monitoring. They are extremely useful, but there’s a couple of caveats around how to use them. Here’s a couple of issues I’ve come across: What are Counters? From RFC 2578: The Counter32 type represents a non-negative integer which monotonically increases until it reaches a maximum value of […]

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CloudFlare: That Was Easy

I switched this blog over to using CloudFlare a few days ago. It’s all been pretty painless, and I highly recommend it to others. What is CloudFlare, and Why Use It? CloudFlare “protects and accelerates any website online.” It does this by acting as a reverse proxy, sitting between end-users and your website. All traffic to your […]

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APNIC – final ‘final’ /22 now available

APNIC entered their “final /8” phase in April 2011. From that time, new and existing APNIC members could request a maximum of one IPv4 /22 prefix. Once you had requested your final /22, that was it. No more IPv4 addresses for you. Or was it? APNIC & IANA have been rummaging around down the back […]

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Using Paramiko/Python with FortiMail

Fortinet makes an email security/anti-spam appliance called FortiMail. I wanted to collect spam and virus statistics from it, to integrate with our Network Monitoring Systems. Unfortunately the data is not exposed via SNMP or API, so I had to resort to some ugly code to get it working. Here’s what I did: CLI – ‘diagnose statistics get total’ The only way […]

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Cisco Political Comments – Why?

I freely admit to not truly understanding the American political/economic system. Sure, I get the general mechanics of it, but I don’t understand the subtle plays, and why people do certain things. So can someone explain to me why Cisco felt it was necessary to put out a statement about a Congressman becoming House Majority Leader? […]

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