Archive for March, 2011

Mar
31

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 bmcgahan@ine.com.

I look forward to seeing you in class!

Mar
30

Well this is the class that everyone wanted redone first so we’re running it online starting April 11th. Brian McGahan will be the primary instructor for the class with Petr and myself assisting. 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.  Everyone who has purchased the R&S ATC CoD or has an All Access Pass subscription will automatically get access to the self-paced version.

Lastly we’re going to be releasing a brand new 12 Day R&S Bootcamp CoD product in April for the All Access Pass customers.  I’ll make a detailed announcement in regards to it later this week but the reviews we are getting from the beta customers on it are excellent to say the very least.

UPDATE –  If you would like to attend the online R&S ATC or just have access to the R&S ATC CoD (along with 1000′s of hours of additional training) but are a little short on funds you can sign up for the All Access Pass with a monthly subscription for just $159 a month.  Once you’re signed up for the AAP you can then register for the online class.

 

Mar
30

OSPF and MTU Mismatch

Dear Brian,

What is the difference between using the “system mtu routing 1500” and the “ip ospf mtu-ignore” commands when running OSPF between a router and a switch?

Thanks,

Paul

Hi Paul,

Within the scope of the CCIE Lab Exam, it may be acceptable to issue either of these commands to solve a specific lab task. However, it is key to note that there is a difference between ignoring the MTU for the purpose of OSPF adjacency and matching the MTU within a real production network.

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Mar
24

I am running this week’s Voice Trivia Contest a bit early (launching it on Thursday instead of Friday) to try to give more people a chance to win that might not otherwise see this over the weekend, however we will still end the contest on Monday morning, as usual.

Here are the facts for this week’s Voice Trivia Contest:

  • Tobias has a phone on which he needs to be able to have two BLF SD buttons that accurately show the presence status of Gob, Buster and Lindsay’s primary DNs. This needs to include status updates for when either Gob or Lindsay’s primary DN is ringing, but not when Buster’s primary DN rings.
  • Gob, Buster and Lindsay’s primary DNs are all in the same Partition.
  • Tobias has a SUBSCRIBE Calling Search Space that contains that Partition all three phones’ primary DNs are in.
  • Tobias also needs to be able to view Call Lists (Missed Calls, Corporate Directory, etc.), but when he views them, he should only see the BLF status change for Lindsay’s DN, and not for Gob or Buster’s DNs.
  • To aid in that, two Presence Groups have been setup. One for Tobias and Lindsay which have been assigned to both their Phone devices and their Lines. One for Gob and Buster, which have been assigned to both their Phone devices and their Lines. The Presence Groups both explicitly have Disallow Subscription to each other’s group reciprocally.
  • All is good with Tobias’s BLF SDs on his phone display, and he can see all of their status changes appropriately – including seeing when Gob or Lindsay’s DNs ring, but not Buster’s.
  • However, there is an issue. When he pulls up the Corporate Directory and searches for everyone, he sees BLF status updates for both Lindsay and Gob, but not for Buster. Remember that he should not see Gob’s BLF status updates either.

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Mar
21

The CCDE bootcamp is coming shortly on May 1st, and we would like to provide some information to those of you who have already registered for the class or considering to join us. The class will go for five days and finish right before the CCDE practical exam in Chicago. The class is interactive for the most part – instructor will present you documents, diagrams, slides and questions on board and then the whole class will go through the solutions in live mode, discussing various options and correct answers. The class is centered around three major “platforms”: generic “large-scale” network topologies that are used to construct various network design cases. There are three main platforms presented in the class:

  • Internet Service Provider. A fictitious ISP that provides VPN and Internet services to enterprises in addition to wholesale Internet services. Generic two-layer network, featuring a mix of interconnection technologies and using ISIS/BGP for routing. This platform is mainly used to work with scenarios relating to transit traffic services.
  • Application Service Provider. A company that has its own wide-area network interconnecting data-centers and points-of-presence. The company provides server application services – e.g. a virtual call-center, online support desk etc to multiple customers. Customers connect either directly or tunneling over Internet. This platform is used to demonstrate issues arising in networks that provide centralized services to different customers. This network uses OSPF and BGP for routing, traffic flows are mainly considered to be “client-server” flows between different networks.
  • Large Enterprise Network. Presents a generic enterprise network with diverse set of offices and private WAN network. The network services just one company, but has to support a large variety of application and different connection types. Traffic flows are mainly contained to one network but there are multiple “concentration” points. The network uses EIGRP for routing.

Every platform is used to construct 5 different scenarios, featuring from 15 to 20 different questions each. Answering each question requires analyzing the network baseline and additional information presented through the course of the class and selecting the optimal answer. Similar to the actual exam, the scenarios will have one the the following logical structures:

  • Merge two networks or spin off a new network.
  • Add a service or application – e.g. deploy L3 VPNs or add VoIP.
  • Scale the network – accommodate technologies to network growth, e.g. IGP/BGP/MPLS scaling.
  • Replace a technology – e.g. replace routing protocol or link type with another one.

You will be required to do a “fresh” design or fix a faulty/suboptimal scenario and propose a better solution. For example, you may be asked to fix a network that has new application deployed that is not working as required. The class will focus on live discussion of design problems as well as strategy tips for passing the CCDE practical exam. One again, students are assumed to have knowledge equivalent in scope to CCIE Written exam blueprint. And lastly, the following is link to a sample CCDE scenario – baseline and questions in the format they are going to be presented during the class.

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Mar
09

As continuing pioneers of so many firsts in the CCIE training space, we have noted before on this blog how we have been offering you for over 6 months now, the first and only 100% web-based remote control client that controls not only CUCM SIP & SCCP phones, but also that controls SRST & CME SIP & SCCP phones. And we give it to you at no additional cost to your rental – it’s built-in to every rack for free (no need to install a messy Windows-only software client). And now, we are very excited to offer you another first – the ability to access and control everything in our Voice Racks, with no need for any VPN client.

Simply use one of the following HTTP links below to access your Voice Rack (you must have a valid session during the time you try to authenticate):

Please take a moment to watch this instructional video on how to use this VPN-Less connection to access and control your Voice Rack and IP phones.

So to summarize:

  • No messing around with silly macros which don’t apply in the CCIE Lab
  • Actual support for SRST (not only CME)
  • Who needs VPN?
  • A software client? Our lips shudder to even think it. No, we live in the real, web-based world
  • 7960′s in our 3 Sites? What’s the point?? They aren’t usable when studying for the CCIE Lab – they’re vastly different in every realm of configuration, which will only distract you from studying for the real exam – so why would we even consider including them? We don’t, save for a PSTN phone, which just like in the real lab, you don’t configure.

And to top it all off, our Voice Racks cost 1/4 of any others.

We look forward to continuing to being the first to bring you the best and brightest innovations that get you one step closer to both of our goals: You Passing Your CCIE Lab Exam.

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