Monthly Archives: May 2014

Validating Candidate Knowledge

I’ve been thinking a lot about the process of knowledge validation. One of the things that frustrates me is the process asking obscure questions that depend on memorization of pointless trivia. This may occur either in the vendor testing or … Continue reading

Posted in Career, Certification, General, Technology | Tagged , , | 14 Comments

Speeding Up a Slow Traceroute in IOS

This article is just a quick tip regarding the traceroute process on Cisco devices and how to it may be streamlined. To be honest, I had been somewhat annoyed by the typical slowness and had assumed DNS lookups to be … Continue reading

Posted in CCNA, Certification, General, Network, Technology | Tagged , | Comments Off on Speeding Up a Slow Traceroute in IOS

My #FAIL at #CLUS and Cisco Testing RANT

I’m about to publicly humiliate myself by sharing today’s private humiliation. To make a long story short, I took 640-554 (CCNA Security) and got the “We Regret to Inform you, blah, blah, blah…” Actually after I’d seen the first 10 questions … Continue reading

Posted in CCNA Security, Certification, Cisco Live, Events, Security, Technology | Tagged , , , , | 4 Comments

Cisco Router — T1 Back-to-Back

For those studying for CCNA and CCNP certifications, a lab is an important part of the learning process. More and different types of interfaces are always a way to add complexity and challenge to a given topology. While standard serial … Continue reading

Posted in CCNA, Certification, General, Network, Technology | Tagged , , | 1 Comment

Cisco Router — 56K Back-to-Back

Like connecting T1 cards directly, back-to-back 56K communication requires a special cable. Also like T1 crossover cables, anyone having bulk networking cable, some RJ45 connectors and a pair of crimpers can make this 56K crossover cable. The specific pinout is shown in the image … Continue reading

Posted in CCNA, Certification, General, invis | Tagged , , | 1 Comment

Activities for Cisco Live Tag-A-Longs

Cisco Live is a super geeky event. It’s also an event that happens in some cool places. One of the side effects is that sometimes our families come along for the ride. Last year Cisco Live was in Orlando, the … Continue reading

Posted in Events, Technology | Comments Off on Activities for Cisco Live Tag-A-Longs

Understanding Tunnel Path MTU Discovery

After experimenting with Tunnel Path MTU Discovery on Cisco IOS based devices, I understand it’s operation. The configuration is simple and there are only a couple of optional parameters that may be set. This feature basically extends the Path MTU Discovery to … Continue reading

Posted in Network, Security, Technology | Tagged , , | 3 Comments

Blog Spotlight — The Peering Introvert — Ethan Banks abstracts networking with words

Like other blogs I’ve mentioned, The Peering Introvert is chock full of great information. This blog is maintained by Ethan Banks, someone very well known to most PacketU readers. For a period of time, there were fewer articles published (likely … Continue reading

Posted in Blogroll, Technology | Tagged | 2 Comments

No One Cares About Our SDN

Readers of this blog know that Software Defined Networking is a popular topic in our industry. Nearly every recent Networking Field Day session has involved some form or flavor of SDN. The centralized control plane concept promises to provide a control point … Continue reading

Posted in Rant, Technology | Tagged , , | 3 Comments