Sorry, this entry is only available in Portugues.

Hello everybody,

In previous post I was informed that in the past BSCI and prontifiquei me to detail a little more of the day I had to get this certification.

First, the BSCI was my result:

Note: 911 / 1000

Trim: 790

Questions: 61

Time: 2 hours.

Scorecard:

• Implement EIGRP operations: 88%
• Implement multiarea OSPF operations: 80%
• Describe Integrated IS-IS: 85%
• Implement Cisco IOS routing features: 100%
• Implement BGP for enterprise ISP connectivity: 90%
• Implement multicast forwarding: 100%
• Implement IPv6: 62%

Confirm what many say, the BSCI is difficult! Ensures that all my preparation was not so good, would not in evidence. Unlike the CCNA, the BSCI has more questions that makes you think. In my test fell all content studied. Do not remember anything that did not fall.

The laboratories that fell in my test were:

• Troubleshooting a configuration of Virtual Link in OSPFv3;
• Bidirectional redistribution of IS-IS and EIGRP;
• Other than I remember …

The issues were the most diverse, so the rebound all:

Study and learn, because if you do not this (and try your luck for braindumps) may not be optimal and not pass the professional certification, as this evidence, especially, is Hardcore!

Each second of my journey of study paid off, because all I added knowledge. Now, talk a little as my preparation.

For the BSCI, I had not done any study plan - something that will do for BCMSN to optimize the time - but my study was to 24/03/2009 (the day after the approval of CCNA) until 30/05/2009 (2 days before being approved in BSCI) and followed by:

1. I watched all the videos from CBT Nuggets by Jeremy Cioara (available in HD Blog).
2. I made an overview of the book’s official CiscoPress by Brent Stewart (available in HD Blog).
3. I started trying to practice some laboratories, but saw that something was missing.
4. Li detail throughout the book of Brent Stewart, during the reading was practicing laboratories for each of the chapters that happening.
5. After completion of the book, began my long journey in laboratories. Laboratories of all that I fell in BSCI, often mixing 2 or 3 areas of expertise to observe the convergence of protocols together.
6. Began to address issues of simulated to identify my weaknesses.
7. Identified these weaknesses, reread the chapter of the book, practicing with laboratories and when this issue was fairly safe as the content did a simuladão of this whole field.
8. I was alternating between steps 6,7,8 until 1 week before the day of examination.
9. Relax this last week, as was the feeling I could have done a week earlier. But that was not reviewed the 100% secure (Multicast) and 2 days before the test found a text named BSCI QuickSheat that was quite interesting to see the entire contents of the evidence as a general overview.
10. One day before the test, relax and not seen anything of the content or annotations.

Extra Tips: Always keep a TXT annotations! When you have a question put it in TXT. When you have an information that is new to you write it in TXT. Thus, you have compiled a file of information and can track all your progress, and if the development of your study you have a question that relates to what you studied, you have noted in TXT.

Personnel, per hour is this. I hope to have contributed a lot, and now towards BCMSN. This week will draw up a plan of studies and will publish on the blog for you to follow.

A strong hug and success to all of us.

Maurício Bento Ghem

Hello everybody,

It is with great pleasure that I wish to announce that today (01/jun/2009) at 09:00 in Passei BSCI (642-901), one of four tests that comprise the CCNP.

Since I am without a computer in my way, then do a more extended comment saying that crashed, which studied and general considerations on the evidence.

Next step, BCMSN (Building Converged Cisco Multilayer Switched Networks), 642-812.

A big hug and success to all of us,

Maurício Bento Ghem.

Towards the CCNP!

Hello Guys,

When I was studying Multicast for BSCI I came across some questions that ask for certain multicast addresses associated with their applications. Here is a summary table of the relevant addresses I know I have over my studies, combined with some demand issues in the study.

Reference:

- IANA, IPv4 Multicast Addresses <http://www.iana.org/assignments/multicast-addresses/>. 23/maio/2009 in Access.

A big hug and success to all.

Maurício Bento Ghem

Hello Guys,

Who monitors the comments in the blog Marco Filippetti may have noticed that I said have marked the race BSCI. Now, I’m making it official:

Test scheduled for 1/junho/2009, 09:00.

I am improving my knowledge until now to feel more secure for their achievement. When I go I have studied 2 months and 1 week. If you follow this average by the end of the year will be possible to achieve my goal of getting the CCNP until December.

Many say that the BSCI is proof more difficult, and I still do not know hehehhe. But the content is a little complicated at first, but once you ‘get the morning’, examines the practices and laboratories you understand perfectly everything that was written in the books. Also, it is possible that by routing be my favorite area in the world of networking I learned with pleasure.

If the next 3 tests are interesting as the content of BSCI is a pleasure studying and learning, in order to obtain the CCNP and demonstrate knowledge sedimented.

Wish me calm and serenity to this day, as luck - I believe - is necessary only for those who are not prepared in its entirety.

Cheers,

Maurício Bento Ghem.

Hello Guys,
I did this summary on the most important of IPv6 to be didactic, comprehensive and objective. The level of coverage of this summary would be midway between BSCI and CCNA certifications. Below.

IPv6

- We added several features compared to IPv4, such as 128 bits for addressing (IPv4 only 32), security (through extension headers), techniques to transition from IPv4 to IPv6, QOS embebbed (direct the header), Autoconfiguration ( allows a host to obtain an IP address without having to run DHCP on the network) and IP mobility.
- The IPv6 address has 128 bits and is divided into 8 ’sextet’, each with 16 bits.
- The Header (including the source and destination IP) has 320 bits, without the extensions - below.

- IPv6 does not have the checksum field (and not the place), considering that the control of errors of lower layers is reliable.
- IPv6 USA not broadcast, but multicasting. A broadcast can be simulated by sending a multicast address to the All-nodes, link-local scope (FF02:: 1).
- Loopback Address -:: 1 / 128 (IPv4 = 127.0.0.1). Address default-route -: 0 / 0 (IPv4 = 0.0.0.0 / 0).
- EUI-64: format derived from the MAC-address used to assign addresses Link-Local. You get the MAC address (48 bits), the hexadecimal number FFFE inserted in the middle of it and changed the first 2 bits (from 00 to 20), so the MAC 00eb.1234.3322 in EUI-64 format would be: 02eb: 12ff: fe34: 3322. Finally, adding the prefix for link-local addresses would: FE80:: 02eb: 12ff: fe34: 3322.
- Types of IPv6 addresses:

• Global Unicast: Identifies a single host on the Internet. Prefixes will be assigned to each organization (48 bits or less), as seen in the picture. The IANA defines the prefix for these prefixes like 2000:: / 3.
• Link-Local: Each interface receives one of these addresses. It is used for the devices on the same network to communicate without having to use the Global Unicast address. Use the prefix FE80:: / 10 + the EUI-64 format.
• Site-local. Single address within the scope of the organization, not routable on the Internet. Prefix: FEC0:: / 10.

- Multicast: Identified by prefix FF00:: / 8. The next 4 bits are flags, and the other 4 next define the scope of Multicast (shown below). Beside, a diagram of the range of scopes.

• 1 = Interface-local.
• 2 = link-local.
• 5 = site-local.
• 8 = Organization-local.
• E = Global.

- Anycast: A Global Unicast address assigned to more than one device, set it as anycast. Has as its route to the nearest anycast device. See below.

- IPv6 Hosts must meet at least the following addresses:

• Global Unicast and Anycast (2000:: / 3)
• Link-local (FE80:: / 10, by Autoconfiguration
• Loopback (:: 1 / 128)
• Multicast all-nodes (FF01:: 1 and FF02:: 1)
• Another group multicast assigned.

- Routers, and this answer should also respond in address:

• Anycast address of the subnet (the subnet address with the Interface ID - Host address - set to 0)
• All-Multicast routers (FF01:: 2, FF02:: 2, FF05:: 2)
• Groups defined by multicast routing protocols (if applicable). EIGRP for IPv6: FF02:: 10, OSPFv3: FF02:: 5 (all routers) and FF02:: 6 (only DR and BDR).

- The main forms of transition from IPv4 to IPv6 can be made through the Dual Stack (running both IPv4 and IPv6 to no longer have need for IPv4) and tunneling (encapsulate the IPv6 packet within an IPv4 packet - figure). For the tunneling is expected the prefix 2002:: / 16.

References:

- CCNP BSCI Official Exam Certification Guide 4th edition, por Brent Stewart. CiscoPress

- CCNA 4.1 Guia Completo de Estudo, por Marco Filippetti. Visual Books

- CertProject, imagem do header IPv6.

- Cisco IOS IPv6 Multicast Introduction - Very good.

- RFC 3513 Internet Protocol Version 6 (IPv6) Addressing.

I would pay special support to all who will make sure during the month of June.

A big hug,

Maurício Bento Ghem.

Hello Guys,

More interesting to a laboratory level of CCNP. This laboratory is quite simple, but illustrates the way a problem we all Network Engineers will have to face in the future.

As the wheel IPv4 Internet will be a great challenge migrate it to use IPv6 in all its points. This laboratory is illustrated the GRE tunneling between two locations using the Internet as a means (R2 simulating an IPv4 network).

Below is the topology of the network.

The IOS is used advipservicesk9-c7200-mz.124-9.T.bin available in HD blog. Follow the same recommendations for the laboratory: use and abuse of show commands and debug, modify and use the laboratory to study and learn .

Below is presented a link to download.

Lab IPv6 - 6-to-4 Tunneling (updated)

Sinceraly,

Maurício Bentow.

Hello everybody,

In the final stage of preparation for BSCI did a more succinct summary of the routing protocols that are part of the scope of this evidence. This summary aims to differentiate various details that are charged in BSCI, such as standard metric when a route is redistributed, terminology and much more. The routing protocols charged in the examination are:

- EIGRP

- OSPF multiarea

- Integrated IS-IS

- BGP in a non-transit AS.

It created a table in Excel which was converted to a figure. This appears a little lower down. Click the picture to download it in full.

Cheers,

Maurício.

Hello Guys,

This laboratory includes several areas of knowledge of routing. The basic configuration is shown in figure below.

In this lab the R2 router acts as DHCP server for your own network to network R3 using the command ip helper-address to use the pool set in R2.

The objective of this lab, and understand the DHCP configuration is able to observe the drop links and topology table to see the routes going to the active state, or seeking an alternate path for the route that fell.

Note that as in Dynamips is not possible to add hosts, routers only have added that without the function of routing. This was possible through the command ip routing.

In addition, follow the recommendations of all: show and debug commands and customize the labs to understand and learn. We used 3600 routers and IOS is available in HD blog. Do not forget to change the paths in the file. Net.

Here is the link to download.

EIGRP Lab - Practice and Queries Dhcp-Relay

A Abrasive staff,

Maurício.

Hello Guys,

A very complex part of the BGP protocol is communication within the autonomous system, or when he runs as IBGP (interior). Several BGP rules change when the communication and exchange of routes occur within the autonomous system, where the topology should be well planned to set up the routers adequately.

This laboratory is focused on communication IBGP, and to make it more interesting, the routers are not available in full-meshed.It should be borne in mind that the routes learned by IBGP are not advertised to other IBGP peers, so the full provision -mesh is widely used. When you can not be made a route-reflector.

A route-reflector is nothing but a router that replicates its BGP table to its peers configured.

Below the topology.

The standard recommendations: use and abuse of show and debug commands, understand the operation and trade routes and learn from the laboratory. Were used IOS c3620-is-mz.123-15 c7200-mz.123-22-ik9o3s both available in HD blog. TXT files have included the initial settings of the laboratory and the laboratory (. NET) already has end settings with everything working.Here is the link to download.

BGP Lab - IBGP Peers

A strong hug to all and good week.

Maurício.

PS: For those who have problems with English come in contact with me to translate to Portuguese. Comments made by me are being made in English because the practice, study and test materials are all in this language, so if we pull everybody. Another hug.