Hello Guys,

Throughout my studies for the CCNA certification, I had many facilities for the practical part. How did the current Cisco Netacad 2002 to 2004 with very good teachers could do much any kind of configuration, troubleshooting and more. All with actual devices.

What I see in some studies of routes for people to study by itself is a lack of practice in the intermediate period of study. In my view, this happens because of the difficulty in setting up scenarios and create from scratch.

In this post, I offer you a ‘package’ laboratories to the Packet Tracer which addresses various concepts by means of various topologies. But best of all is that the laboratory has already guide their goals through the configuration and / or troubleshooting.When you finish setting click Check Results to see the score and get a feedback from your configuration.

Below is the screen of the topology and order.

This package has several laboratories, but those used by me are available on the first link, the folder PT3.2Saves. In the second link, other laboratories are available. Some, besides having the basic file containing the answers made by me.

The file that has all the step by step to open is what is the extent PKA.

Follow the links to download:

Package of Step-by-step Labs for CCNA PT3.2Saves

Package of Step-by-step Labs for CCNA Others

Any questions please contact us.

A big hug and success to all!

Maurício Bentow Ghem.

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.

Hello Guys,

Continuing the series of commands Show, presenting them to the IS-IS protocol.

This protocol is quite different from most because it is based on the OSI address. At first sight appears to be complicated, but understanding the theory behind the protocol is all uncomplicated.

Below.

OUTPUTS:

A Abrasive,

Maurício Bento Ghem.

Hello Guys,

More a summary of the series of commands show, now for the OSPF protocol with focus on the proof BSCI.

This summary was based on previously published lab: Laboratory OSPF and IS-IS with bidirectional Redistribution.

Below is a summary of each command. Each contains a link to its full output.

Outputs

Abrasive and a personal success.

Maurício Bento Ghem.

Hello Guys,

It is with great pride that I present a very interesting laboratory, following the original title of the Lab:

Laboratory OSPF and IS-IS redistribution with bidirectional and NSSA area with default-route, shown below.

With this lab was possible to acquire many skills, especially the redistribution of routes between protocols.

After some time trying to implement the optimal way for redistribution, or redistribute only the summary routes (hierarchical addressing was used), and finally it offers them the laboratory. Repair an area that was used ÑßÅ (not-so-stubby area) of OSPF to complicate the situation a little more.

Like all laboratories published by me, correct the paths in the. Net and grab the corresponding IOS in HD blog, IOS folder.Remember that to perform the laboratory from the start, or configure each device I provided the basic configuration files in TXT, and the final configuration is in the archives. Cfg in subfolder.

Also, follow the same recommendations for learning. Use and abuse of show and debug commands, modify the settings, put the links to check the convergence. Use this lab to learn.

Here is the link to download the laboratory:

Laboratory ISIS and OSPF Redistribution with bidirectional

No doubt, to feel the desire to contact me.

A Abrasive staff,

Maurício Bento Ghem.

Hello Guys,

Following my studies for the BSCI, the first of four tests of CCNP, presenting them to a lab that I understand the operation of the Integrated IS-IS protocol.

This protocol in the first instance seems to be complicated, but there is none. The difference is that it is based on OSI and not IP address in its origins. Another advantage is that it runs on the link layer.

The laboratory is based on a multi-area configuration that uses three devices and three other Level 1-2 Level 1 routing to internal areas. The topology is done in a Frame-relay multipoint network is seen as in the picture.

Was used to IOS c7200-mz.123-22.bin-ik9o3savailable in HD blog IOS folder.

Remember that you must change the paths of the IOS file. Net included. Also, it appears that the configuration in NVRAM of the router is successfully completed after the lab. If you want to start a new configuration using the configuration as TXTs base.

Below follows the link to download:

Laboratorio Multiarea IS-IS with Framerelay

A Abrasive staff,

Maurício Bento Ghem.

Hello Guys,

As I am studying for BSCI great summary of each routing protocols for IPv4.

One detail that should be noted that this was done in English resumão (: S). Believe staff, I can think better in English now, especially for the study. As the summary is presented in topics is interesting for all.

For those who are studying for the CCNA is interesting to give a brief look to see what is out there and enjoy some topics that are scope of certification.

A Abrasive,

Maurício.

Below:

Big Resume

EIGRP:
- Cisco proprietary and distance vector protocol (hybrid).
- Incremental updates.
- Uses Dual and crazy metric with K-values (1,3, Bw e DLY default)
- Establishes neighbors and mainting 3 tables (neighbor, topology, routing table).
- Neighbors must match: authentication, subnet, k-values, hello and dead timers.
- Only protocol that supports unequal cost load-balancing and backup routes (Feasible sucessor).
- If FS > AD the router can be a Feasible Sucessor.
- If there isn’t a feasible sucessor the router sends queryes for its neighbors asking for the route.
- Stuck-in-Active (SIA) is when a network is so big that it searches through it. To solve, router stub or summarization.
- Support ip summary address eigrp in the interface for summarizing the networks.
- Support keychain MD5 and plaintext authentication per interface.
- Support percentage of bandwidth usage, very used in PVC links.
- If you redistribute into EIGRP and don’t set a default-metric the route don’t to go to the routing table, because metric = infinite.»Continuar lendo Summary of Routing Protocols - EIGRP + OSPF + ISIS + BGP

Hello Guys,

I created this article to compare the Packet Tracer 5.1 and Dynamips (using GNS3) associated with the use for the CCNA.

Each of these programs has its peculiarities, facilities and resources. I want to emphasize that these programs will be compared for their use in the certification CCNA, CCNP and then to recommend the following Dynamips without a doubt.

Packet Tracer

Officially, this software is available only to students of Netacad. In its version 5.1 software that makes the simulation of Cisco routers and switches. He is very good performance in question, as it does not perform the actual function of the equipment, but only simulated, not consume many resources of the machine, but does not provide all the commands of a router, many were destroyed. In the teaching aspect, the Packet Tracer is incredible! For all who are starting in the routing and the settings in yourSimulation mode, you can see the package or chassis / frame traveling from one device to another. Plus, if you click on the package as it passes through the devices you can see the whole process of (forward, discard, etc …) and the simulator tells you the stack of checks that it is to know where to forward the packet or frame ( check the routing table to verify NAT, NAT entry found, etc …). This information can be seen below.

Dynamips (GNS3)

While the PT is a simulator, the Dynamips is an emulator-only routers, or it gets the official IOS device and emulates in your machine. No question you have a router feature real in front could even bring it to route, linking the physical network adapter to the emulator. The full functionality of a router has a cost, processing and memory. You can emulate a 3600 router (IOS 12.3) with 64 MB of RAM, while a 7200 (IOS 12.4) needs to 128MB, not to mention the processing needed .. The Dynamips be suitable for all who know and routing and are well familiar with the route of a package based on the routing tables (and other details such as filter with ACL and etc …).

The GNS3 provides you the ease of designing your topology and turn it with Dynamips, similar to the Packet Tracer (to configure it to access Tutorial GNS3. Below is a screenshot of 4 running Dynamips routers 7200, each with 128, RAM allocated according to Laboratory IPv6 and OSPFv3.

Conclusion

The Packet Tracer, in my view, meet all the needs for setting the scope of the CCNA, through its simulator. Performs all functions without much cost of machinery, has an entire section which is important for teaching beginning and has a little more ease in time to create, or even import a laboratory.

The Dynamips is a complete platform, it emulates the device. You have full and unrestricted access to the IOS of the router, but you need a powerful machine. In the picture above was used a Core 2 Duo 1.8 Ghz w / 2GB of RAM. At the time of the bootstrapthe machine goes to 100% for a time to stabilize. If you want to do a short term level of professional certification from Cisco is interesting to use Dynamips to go testing and practicing a little more advanced commands and interface ‘real’ of a router.

For the CCNA, I am with Packet Tracer.

I hope this article has been very enlightening for all who have any doubt about which software to use the laboratories to achieve CCNA.

A strong hug personnel,

Maurício Bento Ghem.