Lindsay Hill network control, visibility, management

NNMi Free Edition

HP has recently released a free version of HP NNMi. This gives you a perpetual license to run NNMi, with some limitations. It’s not completely crippled freeware, and may be worth a look if you want basic fault monitoring in a lab or small network.

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CCIE R&S v5 Rumours and Speculation

Update: We’re getting closer to an official announcement, and this post is attracting a lot of hits - you probably want to read my latest post, which contains more info.

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Review: Arse First Guide to Technical Blogging

Greg Ferro, of Etherealmind.com fame, has published a book on blogging: “The Arse First Method of Technical Blogging.” This covers his

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Top 10 tips for Network Management

Many network faults I see are quite preventable, or could have been fixed far sooner, if basic network ‘hygiene’ had been maintained. Major faults are often the result of multiple small faults. Fix the small problems, and you won’t get as many of the big problems. It’s not glamorous, and you won’t be seen as a hero for solving that production problem, but you will sleep better, and the network will run smoother. Here’s my top 10 tips on maintaining good network hygiene:

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Review: ScienceLogic

I’ve posted a review of ScienceLogic EM7 up at Packet PushersReview: ScienceLogic - One Tool to Rule Them All.

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NNMi and Operations Manager integration issues

Watch out if you have HP NNMi integrated with HP Operations Manager, and you’re upgrading to the latest Operations Agent. I have a customer using HP Network Node Manager 9.22, with HP Operations Manager for Windows 9.0. Both of those systems are running the latest publicly released patches. They are integrated using the Operations Agent method, where NNMi sends SNMP traps to the local Operations Agent on port 5162, which then forwards NNMi incidents as Operations Manager messages.

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Loop detection - without STP

If you have a strong Cisco background, then you immediately think of Spanning Tree Protocol when you think of Layer 2 loop protection. Or if you’re keeping abreast of the newest developments, you think of TRILL and SPB. But there are other mechanisms for helping detect loops at layer 2. Here’s one I came across while studying for HP Master ASE: HP Procurve Loop-Protection.

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HP2910al - fails to boot due to corrupt boot.ini

Recently I was upgrading an HP 2910al switch from 14.70 to 15.08.0012. I used IMC to load the new firmware, rebooted the device, waited…and nothing. Device went offline, and never came back. Ruh roh. It was only a lab switch, but still, it meant I needed to go and hook up a console cable, to see what was going on. Luckily the fix wasn’t too difficult, and I got things back up and running quickly.

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HP Master ASE: HP0-Y37

I have just passed the HP exam “HP0-Y37: Migrating and Troubleshooting Networks.” This means I I have now passed all required exams for “HP Master ASE - Network Infrastructure 2011.” This is a run-through of my impressions of the exam, and what I used to study for it.

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VMware EVC Mode

Recently I’ve been doing more VMware work. It’s been a while, but it makes a nice change. At this site, we have 100+ hosts, and thousands of VMs. Recently we were making some changes to the physical networking of some of the hosts, and we needed to evacuate all VMs from a host. But when we went to migrate the VMs, we got this warning:

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