All Blog Posts
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Buffer tuning has long been an interesting topic for me. I recently found a blog post by Brough Turner, who wrote an interesting article about a potential misconfiguration of AT&T wireless routers that cause ping round trip times to be either <...
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Have you ever had a Cisco router or switch shutdown due to a fan failure? While looking through NetMRI's daily list of analysis issues, I found a Fan Failure issue (it is named "Device Fan Problem" in NetMRI's Analysis page). It was...
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Eric Krapf , editor of No Jitter , leveraged Netcordia's 2010 Predictions of Top Causes of IT Headaches into a discussion on how virtualization can impact IP Telephony. I totally agree that voice will be one of the key applications where solid management...
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We recently had an interface wedge on a customer router, with some interesting repercussions. The network topology is shown below. Every day from about 8am until 6pm, a 250Mbps - 300Mbps traffic load starts between the Major Facility and the core network...
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As an avid follower of both Network World and Denise Dubie , I really enjoyed the a recent post on the " 5 Must-Have IT Management Technologies for 2010 ." While the article includes service hot topic trends like virtualization/virtual systems...
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While doing some other research recently, I ran across the Bridge Assurance feature in Cisco gear, which was new to me. Cisco has been working on ways to avoid STP melt-down and Bridge Assurance is another tool to help network administrators keep networks...
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Co-worker Pete Welcher recently helped a customer whose network experienced a spanning tree loop (i.e. a melt-down). Several things can be learned from thinking about the experience and how to avoid it. Lesson #1: Adequately plan the task. Rush jobs carry...
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The new White House CyberSecurity Officer has shared his top 10 predictions for 2010 and the network has now made it to the list. Bill Brenner takes it a step further, in yesterday’s article discussing the added risks to the network associated with 2009...
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Have you ever lost a device configuration because you forgot to save it to NVRAM and the device later rebooted, perhaps due to a power outage? More than likely some feature or function that had been operating correctly since the last change suddenly stopped...
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Last week,users of the BlackBerry e-mail service across North America were negatively impacted by an outage. Top Tech News reported a Sprint representative stated the outage was caused by routine maintenance. I recently did another blog on the impact...
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