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Tag: cisco
Cisco certification: Important content change in CCIE Voice Lab Exam
This announcement is from The Cisco Learning Network:
Effective July 16th, 2009, important content changes will be implemented in the CCIE Voice Lab Exam. Candidates for lab exams scheduled July 16th, 2009 or later should prepare using the v3.0 Lab Equipment and Software Versions. Candidates scheduled on or before July 15th, 2009 should continue using the v2.0 Lab Equipment and Software Versions.
You can examine the v3.0 CCIE Voice Lab print below:
1.00 | Implement and Troubleshoot Campus Infrastructure and Services |
---|---|
1.01 | VLAN |
1.02 | DHCP |
1.03 | TFTP |
1.04 | NTP |
2.00 | Implement and Troubleshoot CUCM Endpoints |
---|---|
2.01 | CUCM SCCP Endpoints |
2.02 | CUCM SIP Endpoints |
3.00 | Implement and Troubleshoot CUCME Endpoints |
---|---|
3.01 | CUCME SCCP Endpoints |
3.02 | CUCME SIP Endpoints |
4.00 | Implement and Troubleshoot Voice Gateways |
---|---|
4.01 | T1/E1 PRI |
4.02 | T1/E1 CAS |
4.03 | H.323 |
4.04 | MGCP |
4.05 | SIP |
4.06 | H.323 RAS |
4.07 | IP-IP Gateway/CUBE |
5.00 | Implement and Troubleshoot Call Routing Policies |
---|---|
5.01 | Route Patterns and Dial-peers |
5.02 | Digit Manipulations and Translations |
5.03 | Class of Services |
5.04 | Route Selection Preference and Redundancy |
5.05 | Mobility and Single Number Reach |
6.00 | Implement and Troubleshoot High Availability Features |
---|---|
6.01 | SRST |
6.02 | AAR |
7.00 | Implement and Troubleshoot Media Resources |
---|---|
7.01 | CODEC Selection and Flexibility |
7.02 | Conference Bridges |
7.03 | Transcoder |
7.04 | Music-on-hold |
7.05 | Media Resources Preference and Redundancy |
7.06 | Other CUCM Media Resources |
8.00 | Implement and Troubleshoot Supplementary Services |
---|---|
8.01 | Call Park |
8.02 | Call Pickup |
8.03 | Barge |
8.04 | Callback |
8.05 | Other Supplementary Services |
9.00 | Implement and Troubleshoot Other CUCM Voice Applications |
---|---|
9.01 | Extension Mobility |
9.02 | IPMA |
9.03 | Other CUCM Voice Applications |
10.00 | Implement and Troubleshoot QoS and CAC |
---|---|
10.01 | L2/L3 Traffic Classifications and Policing |
10.02 | L2/L3 Queuing Mechanisms |
10.03 | L2 LFI |
10.04 | RSVP |
10.05 | Call Admission Control |
11.00 | Implement and Troubleshoot Messaging |
---|---|
11.01 | Cisco Unity Connection |
11.02 | Cisco Unity Express |
11.03 | Call Handling and Routing |
12.00 | Implement and Troubleshoot Cisco Unified Contact Center Express |
---|---|
12.01 | Advanced Configuration |
12.02 | Script Customization |
12.03 | Redundancy |
13.00 | Implement and Troubleshoot Cisco Unified Presence |
---|---|
13.01 | CUCM Presence |
13.02 | Cisco Unified Presence Server Integration |
Please read more on cisco.com
Cisco security updates squash router bugs
Cisco has released eight security updates for the Internetwork Operating System (IOS) software used to power its routers.
The patches were released Wednesday, the day Cisco had previously scheduled for its twice-yearly IOS updates. None of the bugs had been publicly disclosed ahead of Wednesday’s updates, but some of them were reported to Cisco by outside sources.
Most of the bugs could be exploited by attackers to crash or somehow disrupt service to a router, typically if a specific, vulnerable service is enabled, Cisco said.
The eight updates fix 11 security vulnerabilities, according to Jean Reese, senior manager with Cisco’s Product Security Incident Response Team.
How to integrate GNS3 with Virtual PC
In this article I want to show you how to extend your posibilities to test a network in GNS3. Sure, it’s simple sometime to use a Loobpack interface on one of your edge routers to simulate an external network, but sometime is useful to have something connected to the router port. Take as an example QoS marking and classification. If you want to mark something inbound, then you need a connection to the router port where you want to mark the packets.
Additional to my example here, which include Virtual PC Simulator, you can find useful tutorial about GNS3 and VMware integration on gns3-labs.com or how to emulate a voice lab with the same tools on blindhog.net.
Even most of you are familiar with GNS3 and maybe Virtual PC Simulator, let me begin with some short description about this 2 software.
GNS3 is a Graphical Network Simulator that allows emulation of complex networks. It allows you to run a Cisco IOS in a virtual environment on your computer (running Linux, MacOS X or Linux). GNS3 is a graphical front end to a product called Dynagen. Dynamips is the core program that allows IOS emulation.
The Virtual PC Simulator (VPCS) allow you to simulate up to 9 PCs. You can ping/traceroute them, or ping/traceroute the other hosts/routers from the virtual PCs when you study the Cisco routers in the Dynamips. VPCS is not the traditional PC, it is just a program running on the Linux or Windows, and only few network commands can be used in it. But VPCS can give you a big hand when you study the Cisco devices in the Dynamips. VPCS can replace the routers or VMware boxes which are used as PCs in the Dynamips network.
Before we start, I assume that you already have these tools installed. If not, please download and install GNS3 and VPCS.
On the following example I will show you how to configure a network topology including 2 Virtual PCs and one router and how to interconnect them in GNS3. This presentation is simulate a basic network, but after you learn how to do it, you can configure more complex one. You can have a look to the topology to understand better what I’m talking about.
Please see the video presentation below:
Other bloggers article that you might be interested in:
- Reloading IOS Config at CLI for Dynamips/Dynagen (etherealmind.com)
- Dynamips, Dynagen, GNS3 0.7, IOS15.0 and Snow Leopard OSX (etherealmind.com)
- Cisco is using Linux virtualization and 40 core CPU’s for its next generation routers (colinmcnamara.com)

10 tips that I can tell you about Cisco CCIE exam preparation
Since now I’m closer than ever to my CCIE lab exam, I thought that it would be a good opportunity to share some of my preparation experience with you. Even if this post is focused of the CCIE preparation, I believe that you can take my advices into consideration even if you are preparing for some other exam.
As most of you, when I started the preparation I searched on the Internet about some advices like what should I read, how much time to dedicate to study and how to achieve the maxium results. This are only a few example, the entire list is much more longer and boring I believe.
I found a lot of tips, tricks, advices and many more. Some of them were really useful and helped me, but a lot (and I mean a lot) had no idea what they are talking about. I was dissapointed to find out that some advices there were just lines on a web page and the author had no idea what he or she was talking about, just taking the ideas from another blog (usually one which belong to a network engineer) and posting on his or her blog, webpage article.
So, why I’m writing this post. Well I hope that the way I see things and the advices that I give based on my personal experience can really help some of you.
Don’t trust everything and everybody – If somebody tell you that you should read at least xy number of books and take 1-2-3 bootcamps, stop one second and think. Compare your experience with the one of the person you are speaking to. Maybe you have 7-10 years of experience in related field and you already know most of the theoretic things. Don’t spend time reading just because somebody praise himself on mailing list or some forum with how many materials he read.
Don’t get discouraged – If you are reading on Internet (e.g. forum, mailing lists) ideas that get you discouraged on and on…quit reading them; YOU are the only one aware of your knowledge and you have to trust yourself not opinions on the Internet. Just because somebody say that you will fail on your first attempt, does not mean that it will be like that.
Do not learn if you are tired – You will only get more tired and more frustrated. Do not compare the time you are learning with the one of other CCIE pretenders. You don’t have to learn 12 hours / day just because somebody does it. Maybe that persons has not other thing to do, no work, family, pets or he / she are more slow learners than you. It’s not a competition who’s learning more in a day. If you are tired after a work day, just go to bed, sleep and then when you can you will learn. You’ll see that you can learn in 2 hours when you’re rest more that in 4 hours when your tired.
Don’t quit, just relax – If you encounter some problems during your lab preparation, and you just cannot see the solution, take a 30 minutes break, and maybe than you can see the task with “different eyes”. Sometime the solution is just in front of you, but you cannot see it right away.
Trust your knowledge – I’m not saying here to solve one lab or task during preparation and to praise yourself being so smart, but the right imagine about you can help. Remember that the more trustful you are in our skills, the more chances to obtain a positive results you have.
Don’t hesitate – When you are doing labs, task, questionnaires usually the first idea you have is the best one. Analyze the request correct but don’t start questioning yourself if are doing well, maybe you should apply other solution, or maybe…all of this will confuse you and give you headache. At least now you are in preparation and you can check if you are thinking in the right way. Also you can learn from your mistakes.
When you are not learning try not to think that you should do it – This is one of the most hard thing to achieve, and I have to admit that in most of the time I cannot follow this advice. But if you can, do it. As an example, you really want to see movie, you go to the cinema, but your mind is just making you think of networking, topologies, cisco and so on…At the end you will see that you did not enjoy the movie at all, didn’t relax and didn’t learn either. You gain nothing.
Do not neglect your closer ones during preparation – You will see that you have much more to earn if you give up 1-2 hours of learning in weekend and get out with your family, girlfriend, friends or pet. Try to understand that you have more to gain from their support sometimes than from those 2 extra hours of learning.
Prepare yourself – In a consistent and rigorous mode. After all any exam and especially Cisco CCIE exams are hard to pass. This kind of exams can really improve your professional and personal life.
Be kind and share knowledge to those who are in need – You never know when somebody will return the favor to you. I’m not saying here to let somebody (even more if that somebody is making money from your help) to take advantage of you, but helping make you feel better and prove to you that you didn’t learn for nothing.
Maybe you expected more technical advices and tips and you are a little bit disappointed, but I can assure you that the lines above can really help you in your preparation. Nothing is more important that to understand that CCIE exam is design to help you improve your life not destroy it. If you neglect everything in favor of preparation and then you have bad luck and do not pass it from the first attempt, you could become frustrated because you’ll realize that you spent a long time just learning and now you have nothing. This will stop you from going to the second or third attempt and you’ll end with lost time and without any degree.