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Is Networking Cool — Again? Yup!

I don’t think that anyone can deny that being in the IT industry at this time is exciting and interesting. It’s also exhausting. There is a ton of hyperbole floating about on Twitter and the Blogosphere concerning the need for network engineers to become programmers, and that ‘whatever’ technology du jour is only minutes away from capturing the market and being the de-facto standard. Oh by the way, all networking gear will be white box gear too — didn’t you hear? I’ve tried to NOT write a post that I fear will be read and dismissed as mere rhetoric, but here I am anyway.

As of late, I’ve had the awesome opportunity to work with some very cool customers who are Read More »

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Alternative Learning Tactics for the Busy Professional

When it comes to career development, time is a currency that must be spent wisely. I myself am a full-time dad, a full-time network engineer, and that leaves little time for personal endeavors. However we must still allocate time to develop our skillsets outside of work. Here are some tips for doing just that. Read More »

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Dynamic Multipoint VPN (DMVPN) Setup.

Since DMVPN has been added to the CCIE v5 BluePrint (http://www.cisco.com/web/learning/exams/docs/ccieRS_Lab5.pdf) I figured that now was just as good of a time as any to write this blog.

DMVPN stands for Dynamic Multipoint VPN and it is an effective solution for dynamic secure overlay networks.

DMVPN is combination of the following technologies:

  • Multipoint GRE (mGRE)
  • Next-Hop Resolution Protocol (NHRP)
  • Dynamic Routing Protocol (EIGRP, RIP, OSPF, BGP)
  • Dynamic IPsec encryption
  • Cisco Express Forwarding (CEF)

Topology that we will be starting with:

Colby's Blog Image 1

First thing will be to complete the base configurations on R1, R2 & R3. This will consist of configuring the IP addresses on the above interfaces and setting up the routing protocol to distribute the routes. In this case we will use EIGRP 123. Read More »

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Summary: If you bundle it, they will come!

Recently I was speaking to someone (Mike from New Jersey) at Cisco Live and they were raving about their journey to the Flexpod. They were seeking the best compute, networking and storage yet didn’t want to be boggled down with details when it came to the purchasing process. Converged systems like this are relatively new, and honestly when I was an IT pro; we didn’t have options like that! Not to make me sound old, but when Mike and I were talking about this approach I had a few questions.

Read the rest of Rick’s article, If you bundle it, they will come!, on the Data Center and Cloud blog.

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Summary: Decoding UCS Invicta – Part 3

In part one of this series we covered the internals of HDDs, in part two we went over the internals of SSD, In part three we continue reviewing storage concepts to refresh or learn the right lingo.

Lets start by understanding “Redundant Array of Independent Disks” (RAID). There are RAID levels like RAID0 and RAID1 that are easily to understand and others like RAID5 and RAID6, which many sysadmins misunderstand.

Read the full article, Decoding UCS Invicta – Part 3, on the Data Center and Cloud blog.

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