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Recently a group named Graffiti4Hire from London came to our Bellevue Washington headquarters to create a graffiti mural for us. From what I hear the finished product looks amazing. I’m looking forward to our CCIE Data Center Nexus class at the end of the month so I can see the final result in person! Here is a time lapse video of their work that our video crew put together:
What is the major difference in using an E1 route over an E2 route in OSPF?
From what I’ve observed, if you redistribute a route into OSPF either E1 or E2, the upstream router will still use the shortest path to get to the ASBR regardless of what is shown in the routing table.
The more I read about this, the more confused I get. Am I missing something?
This is actually a very common area of confusion and misunderstanding in OSPF. Part of the problem is that the vast majority of CCNA and CCNP texts teach the theory that for OSPF path selection of E1 vs E2 routes, E1 routes use the redistributed cost plus the cost to the ASBR, while with E2 routes only use the redistributed cost. When I just checked the most recent CCNP ROUTE text from Cisco Press, it specifically says that “[w]hen flooded, OSPF has little work to do to calculate the metric for an E2 route, because by definition, the E2 route’s metric is simply the metric listed in the Type 5 LSA. In other words, the OSPF routers do not add any internal OSPF cost to the metric for an E2 route.” While technically true, this statement is an oversimplification. For CCNP level, this might be fine, but for CCIE level it is not.
The key point that I’ll demonstrate in this post is that while it is true that “OSPF routers do not add any internal OSPF cost to the metric for an E2 route”, both the intra-area and inter-area cost is still considered in the OSPF path selection state machine for these routes.
As you may know, I will be the lead instructor for our New CCIE R&S Advanced Technologies Class. The class runs online, and will start Monday April 11th at 07:00 PDT (GMT -7). If you have an All Access Pass subscription or purchased the live version of the R&S ATC in the past you can attend the live class free of charge by contacting sales. Space is limited so if you want to attend the live version you need to contact sales ASAP.
The class will run least 10 days (not consecutively), but may run as long as 12 – 15 days. Each class day will run about 8 hours, but may run as long as 10 – 12 hours. Right now the length of the class is open ended, because there is *so much* content that I’m going to be covering. I don’t want to rush through topics or skip key topics just to make the class fit into a normal template. Class length will also it depend on how many questions I get from students during the class.
The purpose of this post is to announce that I am taking student submitted topic requests for the class. If there is something that you’re having trouble understanding during your studies, or have found something that is not covered in enough depth in other classes or products, submit your requests here as a comment, or directly to me via email at firstname.lastname@example.org.
I look forward to seeing you in class!
Summer was in full swing, and it was over 105 degrees Fahrenheit outside. Bob was told it was a “dry heat”, but he thought “so is my oven”. Needless to say, Bob was glad to be in the data center, where the temperature and humidity controls kept it very cold. He had been asked to setup up a basic route-map with BGP, and here is the diagram he worked from.
The goal, was to modify BGP, so that all traffic going towards the 184.108.40.206 network (which is sourced from AS1), traveling either from or through AS23, would only use the 220.127.116.11/24 segment (between R3 and R1), and not use the 10.0.0.0/24 segment (between R2 and R1) as a transit path.
Bob reviewed some of the BGP topics he had recently learned. Here is the list he made of possibilities: Continue Reading
Join us Friday, June 25th at 11AM Pacific / 2PM Eastern for another installment in the Open Lecture Series.
The topic that will be covered is Privilege Levels and Role Based CLI.
We look forward to seeing you there. Seats are limited.
I just returned from an awesome Security bootcamp in Raleigh, and am looking forward to more there in the future. Core knowledge is still alive and well in the Security LAB exam, as well as troubleshooting, which is integrated as part of the configuration section.
Often times, what seem like complex network troubleshooting scenarios are caused by overlooking simple fundamental components of the technology. Join me on Tuesday, June 8th as we discuss developing the Tier 1 knowledge that you need to know for the CCIE Security LAB, as well as strategy that may be used to continually build your base of knowledge as you prepare for your CCIE certification.
This v-Seminar is open to the public, and will be held online at
|U.S.A. – Pacific)||Tuesday, June 8, 2010 at 11:00:00 AM||UTC-7 hours PDT|
|UTC||Tuesday, June 8, 2010 at 18:00:00|
To sign up for v-Seminars, click here, and select the link for Free v-Seminars.
To join the meeting listed above, click here now.
See you soon!
We are excited to announce that for the first time INE is traveling to Nigeria! In partnership with New Horizons, INE will be offering two classes in Lagos, Nigeria. We will be offering both our CCIE Routing & Switching Advanced Technologies Class and our CCIE Security Advanced Technologies Class. These classes will be held in New Horizons Training centers.
Both classes will be held from May 3-7, 2010. Both classes will be tentatively held May 24 – 28, 2010.
For additional information on classes held in Nigeria:
Mr. Oluwaseyi Ojo
Seyi: 234-7030160944 or Edward: 234-8073809974
New Horizons Nigeria General:
234-1-7901013 or 234-1-8976386
INE is looking forward to providing training in a new location! For more information on the Advanced Technologies Class please visit our website.
Congratulations to Brett Saling (CCCIE #25890) for passing his CCIE Voice Lab Exam and for leaving us this positive feedback.
” More than impressed with the talent at INE and their contribution as trusted advisors to my success in achieving this certification. I had the opportunity to spend a week at the bootcamp in Reno and solidify the gaps in my knowledge before facing the actual lab. Being able to throw questions back at live bodies while in the midst of mock-lab tasks is priceless as those ‘pesky’ questions usually surface when studying and your phone-a-friends are out drinking.
Much thanks to Josh Finke for his time, insight and patience and for having the tenacity to take students under his wing and provide the necessary resources to strengthen their understanding of core technologies.
Cathartic experience for sure. Now time for a little break, a little make-up family time, then on to Security!”
Now we are giving you the chance to celebrate with Brett and get your CCIE Voice. All CCIE Voice products are 20% off including our v3.0 Training Program and our Essentials Training Package. This is an incredible savings. Find out more here.
We are excited to announce that our CCIE Voice Core Knowledge Simulator has been released! You can try out a sample here. So far, the first 100 questions have been released, and will be followed shortly by additional updates.
The simulation is designed to help prepare candidates for the newly added “open ended” section of the 3.0 Voice CCIE Lab Exam. This new section of the exam consists of four computer based, short-answer questions which candidates have 30 minutes to complete.
The simulator is designed to:
* Pinpoint your areas of weakness on Core Knowledge
* Provide study documents to improve in these weak areas
* Practice with question interpretation and your short-answer responses
Enjoy the questions, and as always, good luck with your studies!
IOS IPS is fair game for the CCIE Security and CCIE R/S labs. With IOS IPS now using v5 signatures, (just like the sensor appliance), the ability to setup up IOS is not as simple, but very important. The intention of this post is to provide a streamlined process to use as a jumpstart into IOS IPS. For full details, examples and explanations, please refer to our lab workbooks. Both RS and Security cover the topic. Lets get started!
First, we need a place for IPS configuration files to call home. IPS wants a folder. Lets make a directory on the router flash. Optionally if there were other IOS file systems present, we could use those writable file systems as well.
R6#mkdir ips Create directory filename [ips]? Created dir flash:/ips R6#