Lindsay Hill network control, visibility, management

War Stories: Closing out Projects

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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 new IPv6 hotspot is very interesting to me. These are my notes on how hotspot functionality can work with IPv6, and no NAT.

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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. Are we prepared for hipsters taking over derelict data centers?

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War Stories: ITIL Process vs Practice

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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 systems. Using the libraries is much simpler than writing your own NETCONF calls.

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TruView Live Application Monitoring

Fluke Networks recently released TruView Live, a subscription-based service for monitoring internal & external applications. Tests can run from Fluke-managed cloud locations, your own systems, or from dedicated hardware appliances. I’ve been testing it out, and I like it so far.

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Unsupported BNA Hacks

Here’s a couple of quick hacks for working with Brocade Network Advisor. It’s unsupported, but you can run BNA on Ubuntu. You can also suppress the client-side JRE version mismatch warning.

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Security - Just Another Risk

I made a conscious decision to move away from full-time information security work. I retain an interest, and try to keep up with developments, but I don’t want to be “the security guy.” There are several reasons for it, but a large part is due to the hype, the bullshit, and general inability for the security industry to act like grown-ups.

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/bin/sh - checking for bash vs dash incompatibilities

I have been investigating a problem where an application would install on RHEL/CentOS, but not on Ubuntu. I tracked it down to a problem with shell scripts that assumed that /bin/sh was bash. Ubuntu uses dash by default, so some ‘bashisms’ don’t work. This will be old news to Ubuntu types that migrated to dash a while back, but I normally use CentOS/RHEL systems, and/or well-behaved cross-platform scripts. Luckily ‘checkbashisms’ can help with figuring out what changes are needed.

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Add Brocade MLX & VDX Support to HP IMC

HP IMC 7.1 E0303P13 does not support configuration backups for Brocade MLX & VDX devices. But they do have an extensible model, so it’s easy to add support. Here’s how to do it, and how to fix the Brocade ICX support.

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