Sorry, this entry is only available in Portugues.

Sorry, this entry is only available in Portugues.

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,

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,

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.

Hello Guys,

The topic is covered in BSCI routing and is expanded including a new version of IP protocol, the IPv6. This new protocol will provide many more tens of IPs compared to IPv4 is used today.

The IPv6 for many (including me) is very obscure and complicated, but if you study with attention and practice quite calm through laboratories you understand its operation, including giants such addresses.

The laboratory that I am offering I did to practice addressing, summarization and working with the OSPFv3 (OSPF for IPv6).

I setup a Multi-area as can be seen in the picture attached and made a summarization of some subnets to see your reflection in the routing table and OSPF in the LSAS. Remember, the OSPFv3 differs slightly from its predecessor on the LSAS, so stay tuned.

As the oldest IOSs not support the OSPFv3 was necessary to use the IOS 12.4 (T) 9, the router 7200. The image is available on this link in the folder IOS - Dynamips.

Emphasize that the configuration in NVRAM of the router is complete, and after setting everything TXTs that are in the file is the initial configuration.

Below the laboratory:

Lab IPv6 and Ospfv3 multiarea 7200

A Abrasive staff,

Maurício Bento Ghem

Hello Guys,

The blog following the flow of the author is also acquiring material for CCNP certification. Yesterday, continuing with the study Multicast finish my study and now started on the IPv6.

I contribute a laboratory that helped me in understanding the protocol PIM (Protocol independent Multicast) which is the protocol used in BSCI to create the routing tables multicast.

As there are two types of configuration of PIM, dense-mode and Sparse-mode, two laboratories were different and they both use the same topology (see Figure).

The laboratories are TXT files that are the initial settings. The settings are stored in NVRAM of router is the final, to be made tests. If you want to configure from scratch, feel at home. Below I provide them for download and use, pointing out that the router used is the 3600 with IOS 12.3 release 15 and download its IOS can be made in this link, paste IOS - Dynamips.

Download the laboratories can be made below:

Lab Multicast PIM-Dense Mode

Lab Multicast PIM Sparse-mode

Cheers,

Maurício.

Hello staff,

Communicating the commitment, I am creating the topology of my first lab in Dynamips (GNS3). Make it below as it is a very good model to work for several issues of OSPF multiárea.

I remember all to modify the file. Net to find the correct path of IOS used. In this lab, we used 3620 routers.

For those who do not know, multi-area OSPF is proof BSCI contents of the CCNP.

For anyone who may be getting anxious to appear only the content CCNP test, relax. Continue posting tips, manuals and CCNA labs this blog to help all who have the same goal that I make sure to Cisco. Now, rising more and more.

Multi-area OSPF Lab of Dynamips.

A Abrasive,

Maurício.

Hello Guys,

This year I’m training, so the time passes very fast. I have to set my goals of the night pro day (it happened).

I decided that until the end of the year CCNP certified as me, then I’m already running behind.

The first part of the study will be reading the book CCNP BSCI - Official Exam Cert. Guide 4th edition by David Steward

After that, follow the same steps for the CCNA. Now, as this is the most complex use the CBT Nuggets more.

Below a picture of my set in note reading + Dynamips.

Embrace personal,

Success!

Maurício.