Down and Dirty Network Troubleshooting Using Traces

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The first time I saw a network trace, I was totally captivated. I was a young network systems programmer working on an IBM mainframe. The network operator had a Spectron Datascope that he could patch into any of the 9.6kbps links connecting the front end processor with the remote offices. My fascination remained, and I Read more...

Data Center of the Future

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Cisco has launched a new Data Center of the Future website that features an interactive concierge who engages in an assortment of antics. e.g putting on a tie, reading a CCNA book, doing puzzles, and so on. You’ll have to leave it running for awhile for the sound on to see and hear them all. Read more...

A Virtual Switch Feature-fest

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The announcement of the VMware vNetwork Distributed Switch and the Cisco Nexus 1000V at VMworld last September was pretty exciting as network things go. These new virtual switches put a bunch of new features and capabilities at the disposal of network and server admins in addition to simplifying deployment, configuration and monitoring. But what do Read more...

Deciphering NIC Capabilities from log entries

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Time once again for a down and dirty, bits and bytes style guest post! One of our Consulting Architects, Kamau Wanguhu, put this post together with some guidance from engineering…   You may have seen messages like those below in your logs and wondered what neat capabilities are being enabled on your network card (NIC). ESXsrv01 Read more...