Tuesday, July 15, 2014

Cisco Exam costs "upgraded" on June 2014

Cisco upgraded her exam costs on June 2014. Basically, USD $50 is added to every exam.

This is already an old news. I just want to record it here in case you missed it.

[Original Post]
https://learningnetwork.cisco.com/docs/DOC-12825

[The following content is captured on Cisco.com.]
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Last Modified:  Jun 20, 2014 2:57 PM by Madhukar: Cisco Team

What Do Exams Cost?

Computer-based certification exam (Written Exam) prices range depending on scope and exam length. Please refer to the table below.

sPATHENTRYASSOCIATEPROFESSIONALEXPERTSPECIALIST

Cost$125 - $150$150 - $295$250$400$250

  • CCIE Lab and CCDE Practical exams are $1,600 USD per attempt at permanent Lab Locations.   Information on Mobile CCIE labs can be found here. Travel and lodging expenses are the responsibility of the candidate and are not included in the exam price.
  • Expert and Architect level Lab and Practical exam information links: CCIE Lab Exams , CCDE Practical Exams and CCAr.
  • Costs may vary due to exchange rates and local taxes (VAT, GST).
  • Register online at Pearson VUE for all exams except CCIE Lab exams. Payment is made directly to the authorized test delivery partner, Pearson VUE.
  • You are responsible for any fees your financial institution charges to complete the payment transaction. Payment is made online via credit card or wire transfer. Price is not confirmed and subject to change until full payment is made.
  • For exact pricing of your exam please register online at Pearson VUE. Exams prices vary depending on scope and exam length.

Saturday, June 21, 2014

Threatening the market by “Wedge”? I don't think so.

A grass next to Taipei Botanical Garden (台北植物園), Taiwan
I just don't get it. Products such as iPhone/iPad are totally proprietary. And people still love them. Network devices are also proprietary. However, people just don't like proprietary network boxes and want them all to become as open as commodities?

Last Wednesday (June 18, 2014) Facebook announced the existence of their experimental in-house Top of Rack 40Gbps switch called “Wedge”. The basic ideas in many reports from the press (like this, this, and this) are: this would threaten existing market of network vendors such as Cisco.

Friday, June 13, 2014

Bandwidth (Throughput) is not everything about network performance

A look along the Coconut Palm Avenue (椰林大道).
National Taiwan University.
We like to compare the "bandwidth" numbers of different network systems. In my experience, bandwidth is the most asked property when I am introducing new technologies to other network workers. Bandwidth is very easy for people to understand, to do the calculations, and to compare which one is better than the others.

However, bandwidth is just not everything. Network with larger bandwidth is simply not a faster network at all.

Here I crafted an imaginary example, to show you why bandwidth is not as important as you might think of.

This imaginary example is called: "Trans-Pacific High Bandwidth Pipe".

Wednesday, June 11, 2014

Northbound, Southbound, and East/Westbound. What do they mean?

We hear a lot of directions when we are talking about Data Center technologies: Northbound, Southbound, and even Eastbound/Westbound. What do they mean? Why are they called this way?

Software Defined Networking (SDN)

Source: Wikipedia

For minimum discussion of SDN, three layers are defined inside an SDN. They are SDN Service Layer, Controller, and Physical Network.

Thursday, April 24, 2014

Interesting Visualization: Configuring Virtual PortChannel (vPC) of Cisco NX-OS


This video from Volvo Trucks is telling exactly how I feel when I configure Virtual PortChannel (vPC).

If I configured the two powerful trucks (NX-OS devices) well, I could make them run powerfully smooth.

However, if I made just one single mistake, I could also go terribly wrong.

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