Home Desktop Upgrade 2016 – Part 2

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I recently got the hardware itch again and decided to replace my dual ASUS 27″ LCD monitors with a single Acer Predator X34 34″ Curved LCD monitor. In order to drive that 3440 x 1440 display I replaced my MSI Twin Frozen R6950 with an EVGA GTX 1070.

I’ve had the ASUS displays since back in 2012 so at four years old they have served me well but I thought it was time for a change and I decide to spend a little more money than I usually would for a monitor and graphics card combination.

I’ll need a few weeks to see how I really like the new display but so far it looks beautiful.

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Cheers!

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Lenovo ThinkPad T460 Yoga with Intel AC 8260 Wireless Issues

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I recently came across an issue where the Lenovo ThinkPad T460 Yoga with Intel AC 8260 wireless adapter was having all sorts of issues connecting to and passing traffic across a Cisco 5508 Wireless LAN Controller with 1262N and 3702E Access Points running 8.0.133.0 software, the most recent release at the time of the issue. The first thing we tried was upgrading the driver for the Intel Dual Band Wireless-AC 8260 to 19.1.0.4 (7/16/2016) which was the latest available at the time. Unfortunately that didn't help any, we also tried applying an 8.0.135.5 software version to the Cisco WLC, again that didn't help […] Read More

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New Cisco AP 2702i won’t join controller

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As if I didn't have enough wireless fun this past week... I recently stumbled across an issue trying to get a number of new Cisco 2702i APs to join a Cisco 5508 Wireless LAN Controller. I didn't realize it at the time but the reseller had changed the part number on my order from AIR-CAP2702I-A-K9 to AIR-CAP2702I-B-K9. The significance is the new -B regulartory domain that requires minimum of 8.0.132.0 software on the Cisco WLC to recognize the new AP models. As luck would have it the WLC I had was only running 8.0.121.0 software hence the APs were unable to join […] Read More

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Cisco WLC Bonjour Process Task and Expired Certificates

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It's been a crazy for weeks for me... vacation, consulting engagements, traveling to Reno, NV to stand up a new network - rack, stack, install, configure, test and turnover. So I thought after returning to Philadelphia this past week that things would slow down a little, boy was I wrong. I had a number of challenges and what follows is just one of them involving wireless - I also have another one involving the Lenovo Thinkpad T460 and the Intel AC 8260 Wireless adapter having issues with 802.11n over a Cisco 1262N AP but that's another story. On Wednesday morning […] Read More

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Technical Debt in Networking

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In a previous podcast, Network Broadcast Storm Episode 5 - Network Monitoring, I talked very briefly about technical debt but after listening to the show I thought I really didn't do the topic any favors so I thought I'd write about it here briefly. I see technical debt as anything you do in taking a shortcut that could jeopardize the operation of your solution or its underlying design. The term technical debt is often referred to in software coding but it applies equally to networking and systems administration. I've occasionally heard the term "skeletons in the closet" used to describe the […] Read More

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