05 Mar 2014
This article is Part 3 in a 12-Part Series.
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03 Mar 2014
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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02 Mar 2014
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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27 Feb 2014
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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26 Feb 2014
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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24 Feb 2014
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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23 Feb 2014
[UPDATE 26/6/14] This code is now available as a Release Candidate.
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22 Feb 2014
This article is Part 6 in a 7-Part Series.
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19 Feb 2014
Cisco Meraki offers a free wireless AP to anyone who registers for a webinar about their products. I had given up on receiving my AP, but after a moan on Twitter, it arrived. I’ve been using it in the office for a few weeks for simple wireless access, and I’m pretty impressed by it. The management interface is pretty slick, and it would clearly solve a lot of problems for anyone dealing with a widely distributed network.
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17 Feb 2014
When implementing HP IMC UAM, you may need to redirect users to the IMC webserver, for device registration & configuration, and obtaining user 802.1x certificates. One method of doing this is to put users into an initial “Registration” VLAN, and configure an HP Comware device to redirect all web traffic. Here’s how to do it using HP’s VSR Virtual Router.
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