routerjockey

Well-Known Intervals

Listed below are many events which occur on network devices at well-known intervals. The list is provided to serve as an aid while troubleshooting recurring network disruptions. …

Cisco VIRL released into the wild

After much waiting from all of us, Cisco has released, on “cyber Monday” no less, VIRL. As you may remember, VIRL was the talk of CLUS 2013, and many of us have been eagerly …

The Unofficial JNCIE-ENT Prep Guide

Some of you may have heard that Jeff Fry has published his Unofficial JNCIE-ENT Prep Guide, but how many of you have purchased it yet? I’ve had the opportunity to look it over as …

Installing VMware tools on Cisco ACS

As of ACS v5.4 Cisco has finally included VMware tools for their ADE OS. Unfortunately, when you upgrade, they do not get installed automatically as the installation is triggered …

MDS Fibre Channel Switching Basics for Network Engineers

Recently I’ve been lucky enough to be challenged with learning a bit about Fibre Channel Switching, but I’m even luckier in that I’m getting to know it on a set …

BPDU the next incrementation

As I feel this may be a regular section of the blog due to my lack of availability. Please suggest a better name for this “series”. I would certainly appreciate it, as would my …

BPDU – Blog Post Data Unit?

My most recently collection of interesting bits of data found out on the blogsphere/internets. Due to my lack of time, I’ve decided to recycle what I find out on the ‘net and share …

F5’s iRules — My first look

I’ve never had the opportunity to really do much with F5 load balancers in the past, but recently one our system engineers needed some load balancing setup, and wanted to know if …

Cisco Increases CCIE Lab Cost

This morning several CCIE candidates received an email stating that on August 1, 2011, Cisco will be raising the cost for the CCIE lab from $1,400 to $1,500. This is an interesting …

Remote Configuration Tip

I got asked a rather interested question the other day. An engineer needed to make remote configuration changes to a router, but do the commands he needed to run, he would be …

Setting up a Cisco Access Server

Whether your networking lab has 3 devices or 30 an access server, also commonly called a terminal server, is the vital connection between you and those devices. For this purpose …

Petition Cisco for Educational IOS Licensing

Greg Ferro of Etheralmind.com has started a petition asking Cisco to embrace those who pursue Cisco’s certifications a legal course of licensing without the cost of building a home …

More IOS Tips

Learning the particulars of Cisco IOS is one of the most valuable things a network engineer can do. These skills will be the basis of everything you do on the lab and on your …

Cisco VOIP Basics – Call Broadcast for Cisco CME

This is the fourth and final part of my Cisco voip basics series. ( Parts 1, 2 & 3 ) Our goal in this series has been setting up a working voice gateway that you could use in …

Connecting Dynamips to your local network (OSX)

Ever wanted direct network access to your Dynamips lab? Have you ever needed to lab something that used the SDM, but you run Dynamips under OSX? You may have noticed using …

The History of PING

Anyone that has touched a computer these days has probably heard of ping. But very few know of its true origins these days. The following is based off the original developer, Mike …

JunOS Olive Demonstration

As a follow up to my JunOS Olive tutorial, I made a demonstration video that shows Multicast functioning via OSPF to another Olive and an ImageStream VM.

Running JunOS under VMWare (updated – again!)

Interested in trying out JunOS? Can’t afford to build a real Juniper lab? Sounds like you need some Olives. No, we’re not talking about the green fruit commonly seen in a martini …

Cisco VOIP Basics – Cisco Dial Plans

This is the third part of my Cisco voip basics series. ( Parts 1, 2 & 4 ) Our goal is to help you configure a Cisco voice gateway that you could use in your home office. This …

Cisco VOIP Basics – Installing Cisco Call Manager Express

This is the second part of my Cisco voip basics series. ( Parts 1, 3 & 4 ) Our goal in this series is to setup a working voice gateway that you could use in your home office. …

Testing TCP Connectivity on Cisco Devices

Ever thought you might be having some Layer 4 connectivity issues? Pings as you should know are ICMP transmissions and ICMP is a Layer 3 protocol (commonly used to send error …

Cisco VOIP Basics

This is the first part of my Cisco voip basics series. ( Parts 2, 3 & 4 ) VOIP is obviously becoming a large part of networks, even now part of your CCNP requirements are basic …

Juniper Fast Track Program

This summer I learned about a fantastic offer from Juniper to ‘fast track’ you into a certification. They’re offering training material, and if you can pass their pre-assessment …

Configuring a Cisco Router as a Frame Relay Switch

One of the most effective lab setups uses frame relay as its primary transport method. This is a configuration that many people use and praise for its ease of setup and …

Setting up VOIP lab

This week I’ve started setting up a VOIP lab to explore the technology and when I’m done, I plan to integrate it into my home network. So far I’ve purchased the following for my …

Demystifying Cisco Config Register Bits

Ever accidentally set your config register to a random value that isn’t in the Cisco documentation? No? Neither have I, but one day I encountered someone on #cisco that had. So I …

Cisco IOS Tips and Tricks

So, I’m sure these have been posted almost on every networking blog under the sun, but who knows, right? Here are a few tips and tricks to help you move around the IOS a bit …

Working on my new lab setup

So, I purchased a couple extra routers, and a second layer3 switch from @usedciscoguy. He gave me a really good deal and I plan on purchasing a 6500 series switch from him as soon …

Cisco IOS Naming Conventions

As I started building this lab, I realized that I had to find a refresher course on the IOS naming conventions. They have gone through a number of revisions through the years, but …

Fundamentals