How to use VPCS with GNS3 in Ubuntu.

1.Download vpcs from here VPCS 0.20a

2.Extract and look for vpcs32.linux(for 32-bit systems) and vpcs64.linux (for 64-bit systems)

3.Fire up the Terminal and issue following command 
chmod +x vpcs32.linux

4.Then we'll open and configure startup.vpc in gedit

gedit startup.vpc

5.Now configure startup.vpc according to your requirement. For example I'll add just two hosts for this tutorial.
Host 1 (VPCS1) with Ip and as its gateway.
Host 2 (VPCS2) with Ip and as its gateway.

** add # to the rest of the lines.

6.Now lets start VPCS by issuing the following command within the terminal.

7.Use show command to see all the configured ip addresses.

8. We are done with VPCS configuration part, minimize the vpcs window, and lets configure port settings for VPCS on GNS3.

Fire up GNS3 (run gns3 as a root).

9.This is a optional step where I'll be adding symbols to PC hosts.

10.Add computer symbol from 'available symbol' to 'customized nodes'
    on name = anyname ie, PC1
    on type  = Cloud
    click ok
Do the same for PC2

11.Drag and Drop PC1 and PC2 into the GNS3 Workboard.
    Double click on PC1
    click on 'C1'
    go to tab 'NIO UDP'
    go back to Step 7
    Check the LPORT and RPORT

12.On Local port add rport value
    on Remote port add lport value
    on Remote host add
    click add
    Do the same for PC2 (again check the respective ports)

13. Lets add a Ethernet switch to the GNS3 workboard and check the connectivity between the two hosts.

14. Maximize vpcs window and lets ping to each host to check the connectivity between them.
     To navigate from 1 pc to another, simply type the number

As you see, a successful connectivity has been established between the two hosts. 

Happy Learning :)

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Configure Terminal Server

1. Configure an IP address on the ethernet interface
cisco(config)# int fa0/0
cisco(config-if)# ip add
cisco(config-if)# no shut

2. Create a loopback interface
cisco(config)# int lo0
cisco(config-if)# ip add

3. Configure the line based on the “show line” output.
* If enabled, the port will be accessible through the network on TCP port 20xx where xx is the TTY of the port on the router
cisco(config)# line 1 16
cisco(config-line)# no exec  //unwanted signals from the attached device do not launch.
cisco(config-line)# exec-timeout 0 0 //disable the line timeout period
cisco(config-line)# logging synchronous
cisco(config-line)# transport input all

4. Configure default route
cisco(config)# ip route
cisco(config)# ip default-gateway 
// ip default-gateway is configured as well in case routing is not enabled. E.g. the terminal server is in ROMMON mode as a result of a bad reboot after power outage.

5. Enable telnet line
cisco(config)# line vty 0 4
cisco(config-line)# password cisco
cisco(config-line)# login

6. Configure host and line mapping
*e.g. Router A is connected to line 1
cisco(config)# ip host RouterA 2001

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Enable SSH in Switch and Router

Assuming the IP address, enable password and default route are in place, the additional steps needed are as follows:

1. Configure a domain name
cisco(config)# ip domain-name

2. Configure the RSA key generation for encryption
cisco(config)# crypto key generate rsa
* it may prompt user for the key length generated in the range of 360 to 2048. Default is 512-bit.

3. Configure authentication method
a) Using local database
cisco(config)# username cisco password cisco


b) Using Radius server
cisco(config)# aaa new-model
cisco(config)# aaa authentication login Radius_Server group radius
cisco(config)# radius-server host

4. Configure the terminal line
cisco(config)# line vty 0 4
cisco(config-line)# login local                                            // using local database


cisco(config-line)# login authentication Radius_Server          //using radius server
cisco(config-line)# transport input ssh

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Subnet Chart:Internet Protocol (IPv4)

This is an Internet Protocol (IPv4) Subnet Chart. You can use this to quickly look up how you might need to subnet your network. At the bottom there is a quick how-to on calculating subnets.

For more information on subnetting, see RFC 1817 and RFC 1812.

Class address ranges:

Class A = to

Class B = to

Class C = to

Reserved address ranges for private (non-routed) use (see RFC 1918): -> -> ->

Other reserved addresses: is reserved for loopback and IPC on the local host -> is reserved for multicast addresses

Chart notes:

Number of Subnets - "( )" Refers to the number of effective subnets, since the use of subnet numbers of all 0s or all 1s is highly frowned upon and RFC non-compliant.

Number of Hosts - Refers to the number of effective hosts, excluding the network and broadcast address.

Class A

Network Bits Subnet Mask
Number of Subnets
Number of Hosts
/8 0 16777214
/9 2  (0) 8388606
/10 4 (2) 4194302
/11 8 (6) 2097150
/12 16 (14) 1048574
/13 32 (30) 524286
/14 64 (62) 262142
/15 128 (126) 131070
/16 256 (254) 65534
/17 512 (510) 32766
/18 1024 (1022) 16382
/19 2048 (2046) 8190
/20 4096 (4094) 4094
/21 8192 (8190) 2046
/22 16384 (16382) 1022
/23 32768 (32766) 510
/24 65536 (65534) 254
/25 131072 (131070) 126
/26 262144 (262142) 62
/27 524288 (524286) 30
/28 1048576 (1048574) 14
/29 2097152 (2097150) 6
/30 4194304 (4194302) 2

Class B
Network Bits
Subnet Mask
Number of Subnets
Number of Hosts
/16 0 65534
/17 2 (0) 32766
/18 4 (2) 16382
/19 8 (6) 8190
/20 16 (14) 4094
/21 32 (30) 2046
/22 64 (62) 1022
/23 128 (126) 510
/24 256 (254) 254
/25 512 (510) 126
/26 1024 (1022) 62
/27 2048 (2046) 30
/28 4096 (4094) 14
/29 8192 (8190) 6
/30 16384 (16382) 2

Class C
Network Bits
Subnet Mask
Number of Subnets
Number of Hosts
/24 0 254
/25 2 (0) 126
/26 4 (2) 62
/27 8 (6) 30
/28 16 (14) 14
/29 32 (30) 6
/30 64 (62) 2

Supernetting (CIDR) Chart

CIDR - Classless Inter-Domain Routing.

Note: The Number of Class C networks must be contiguous.
For example, represents the following block of addresses:,, and

Class C
CIDR Block Supernet Mask Number of Class C Addresses Number of Hosts
/14 1024 262144
/15 512 131072
/16 256 65536
/17 128 32768
/18 64 16384
/19 32 8192
/20 16 4096
/21 8 2048
/22 4 1024
/23 2 512

Quick Subnetting How-To

[Understanding decimal - Base 10] 

The first thing you must know is that the common number system used world wide is the decimal system (otherwise known as base 10). What makes the decimal system a base 10 system is that it is based on grouping numbers by 10's. It is believed that the system evolved because we have ten fingers and ten toes which over the years we have used for counting. I use mine all the time (grin). We name the ten digits: zero, one, two, three, four, five, six, seven, eight and nine.

The decimal system has a 1's place, a 10's place, a 100's place, a 1000's place and so on. We say the number places are grouped by 10's because multiplying each number place by 10 gives you the next number place. So: 1x10=10 (the 10's place), 10x10=100 (the 100's place), 100x10=1000 (the 1000's place) etc.

Let's look at the decimal number 103 by place.

103 <- read from right to left
We have a 3 in the 1's place
We have a 0in the 10's place
We have a 1 in the 100's place
Thus: 100+0+3=103
By now you probably feel like you have attended Kindergarten for the second time in your life? Sorry about that but it is very important that you understand the concept of what a number system is, and what it is based on before we look at binary.

[Understanding binary - base 2]
Binary is a base 2 system, and thus groups numbers by 2's and not by 10's like the decimal system. We name the two digits: zero and one. The binary system has a 1's place, a 2's place, a 4's place, an 8's place, a 16's place and so on. We say the number places are grouped by 2's because multiplying each number place by 2 gives you the next number place. So: 1x2=2 (the 2's place), 2x2=4 (the 4's place), 4x2=8 (the 8's place), 8x2=16 (the 16's place) etc.

Let's look at the decimal number Let's look at the decimal number 103 in binary format:

01100111 <- read from right to left
We have a 1 in the 1's place
We have a 1 in the 2's place
We have a 1 in the 4's place
We have a 0 in the 8's place
We have a 0 in the 16's place
We have a 1 in the 32's place
We have a 1 in the 64's place
We have a 0 in the 128's place
Thus: 0+64+32+0+0+4+2+1=103
Okay, Let's test your skills. Here is a list of binary numbers, try converting them to decimal and check your answers at the end of this post.


If you were able to convert these numbers to decimal then congratulations! You're ready to move on to the next section.

[Understanding a subnet mask]

Now that you understand what binary is, let's have a look at our two subnet masks from the beginning of my post: /

The concept of a subnet mask is simple. You have a network and you have hosts on the network (anything with an IP address is a host). The subnet mask determines what portion of the TCP/IP address represents your network and what portion can be used for your hosts. Because I am a simple person, I think of it like this; The network number represents the street I live on, and the host portion is used for the numbers on all the houses on my street.

A subnet mask of means that the first three octets of the address will be used for the network, and thus our network number is 192.168.1. This means we can have 254 computers on this network, because the fourth octet is not being used by the network portion of the address. We know this because of the 0 in the subnet mask (

We call each of the number sections an octet because we think of them in binary, and there are eight possible bits in each section. Eight bits is an octet. 11111111 in binary is 255 in decimal (did you do the conversions?). So our decimal subnet mask displayed in binary is going to be:


If you count all the ones, you will find that there are 24 of them. Now look at the subnet mask examples again.

Do you see why both subnet masks are the same? The number 24 is the number of bits used in the network portion of the address, and is short-hand for writing the address/subnet mask combination. It becomes important to understand this when you start dividing your network into multiple sub networks.

[Understanding Subnetting]
Before reading this section, you should have a good understanding of what a subnet mask is and how binary bits represent the subnet mask.

Simply put, subnetting is dividing your network into multiple sub networks. To go back to my silly example about houses and streets, subnetting gives you multiple streets in your neighborhood.

There are two methods for dividing your network into multiple sub networks; One is to simply change your network numbers keeping the same subnet mask. The other is to subnet your network into smaller sub networks.

Keeping the same mask:
Your network could be divided into two or more networks by changing the network portion of the address such as 192.168.1 and 192.168.2 and keeping the same subnet mask.

Doing this would give you two separate networks with 254 hosts per network. This is a very common method of dealing with multiple networks. However, back in the good old days you had to pay for every IP address you used, and if you had 25 computers on your network you probably would not want to pay for 254 addresses! The answer to the problem is...subnetting.

Subnetting a network:
Subnetting is when you use bits from the host portion of your address as part of your network number. This let's you subdivide your network at the cost of host addresses, which is great if you're paying for every host IP address. It will save you money because you pay for fewer TCP/IP addresses. Confused? Here is where understanding binary is important.

Lets look at a new subnet mask:
As you can see in the fourth octet, some of the host portion of this subnet mask is now being used for part of the network address. Which means we are now using some of the binary bits in the fourth octet for our network numbers, and that gives us fewer hosts than our old mask (which gave us 254), but gives us more networks (which is why we call it subnetting).

How can we tell how many networks and hosts per network this new subnet mask will give us? Well... we shall have to use some of our newly acquired binary skills.

The first task is to find out how many bits in the fourth octet are being used? The decimal number is 224, what is the decimal number 224 as represented in binary?

The decimal number 224 in binary is:
We have a 0 in the 1's place
We have a 0 in the 2's place
We have a 0 in the 4's place
We have a 0 in the 8's place
We have a 0 in the 16's place
We have a 1 in the 32's place
We have a 1 in the 64's place
We have a 1 in the 128's place
Thus: 128+64+32+0+0+0+0+0=224
So our complete subnet mask in binary is:
We now know that three bits from the fourth octet are used. How can we tell how many sub networks we're going to have? This requires some math- sorry. The formula is: 2n-2, where n is the number of bits being used from the host portion of our subnet mask.

Note: We subtract 2 from the total because you do not count all 0's or all 1's.

The formula for three bits is:

In simpler terms:

So our network is sub divided into 6 networks. Next, we want to know what the network numbers are, and how many hosts we can have on each of the 6 networks?

What is the first subnet? Let's have a look at the bits in our fourth octet again. The bit that gives us the answer is the (1) closest to the first zero, and in this case it is the 3rd bit from the left.


The 3rd bit will start our first network, and the 3rd bit is in the 32's place (remember binary). Start adding the value 32 to itself six times to get the six network numbers.

Note: A quicker way to find our starting network number is to subtract our mask from 256.

Here are our network numbers:


A better way to display this is:
The host addresses will fall between the network numbers, so we will have 30 hosts per network. You're probably wondering why it's not 31? The answer is that the last address of each subnet is used as the broadcast address for that subnet.

Subnet: /
Address Range: through (30 hosts)
Subnet Broadcast Address:

Let's test your skills- write the address range and broadcast address for the following subnet. You will find the answer at the end of this post.

Subnet: /
Address Range?
Subnet Broadcast Address?

If we we're paying for our TCP/IP addresses, we would only pay for one network and host combination, thus paying for 30 hosts and not 254. It could mean some real savings, it also frees up the remaining addresses for other organizations to use.

Let's look at another subnet mask:
How many bits are used from the host portion? To find this out, we need to know how the decimal number 240 is represented in binary.

The answer is:

So four bits are taken from the host portion of our mask. We do the same math as before:


In simpler terms:

We will have 14 sub networks, and what will the network numbers be? Look at the fourth bit, it's in the 16's place:

Note: A quicker way to find our starting network number is to subtract the value of our mask from 256. So: 256-240=16

Start adding 16 to itself- fourteen times to get all 14 network numbers:


A better way to display our subnets is:

The host addresses fall between the network numbers. So we will have 14 host addresses on each of our 14 sub networks (remember: the last or 15th address is the broadcast address for that subnet).

If you had a small company with 10 hosts and needed to have a static IP address for all of your hosts, you would be assigned a network/subnet mask and a valid IP address range.

Here is an example of what that might look like:

Address Range: through
Subnet Broadcast Address:

[Answers to Binary Conversions]
10000000 = 128
11000000 = 192
11100000 = 224
01000000 = 64
10000011 = 131
10010001 = 145
11111111 = 255

[Answer to Subnet Question]
Subnet: /
Address Range: through
Subnet Broadcast Address:

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Add GUI QEMU Host in GNS3

Today I’ll show you how to add graphical host in GNS3 using Qemu. We’ll be using tinycore which is based on Linux 2.6 kernel, Busybox, Tiny X, and Fltk. Tiny Core includes ssh, iptables, iproute, tcpdump and IPv6 support. It is quite well integrated and doesn't require much tuning. This is a graphical version of Microcore linux image, we used in previous tutorial  Add Qemu host in GNS3 .

Download Tinycore Linux Qemu image
Tinycore Linux 2.11.5 Qemu image can be downloaded separately from here.

Setup image for Qemu hostTinycore

Go to Edit | Preferences | Qemu | Qemu Host

Setup new image with following properties
  • Identifier: tiny_core
  • image: local path to linux-tinycore-2.11.5.img
  • Memory: 64 MB
  • NIC: e1000
  • Qemu options: -no-acpi

Press Save and just added image will appear into Qemu Host images list.

Drag Host >> Select Name >> Right Click >> Start

Watch Tinycore in Action here.

Happy Learning Smile

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Putty Connection Manager

If you work with Cisco or Linux you are probably used to working with a terminal window. When you have several terminal windows on your desktop this might become a bit annoying when they are all scattered around the screen. Putty connection manager solves this problem! Best Part is Putty Manager can be used with GNS3.


By using Putty Connection Manager you can use tabs to keep your terminal windows under control. You can split windows horizontally or vertical and customize it exactly the way you like...very nice!

You can download putty connection manager from this website:

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Cisco Routing & Switching Certifications

Cisco offers different "tracks" when it comes to certification:

  • Routing & Switching
  • Design
  • Network Security
  • Service Provider
  • Service Provider Operations
  • Storage Networking
  • Voice
  • Wireless
Most of the tracks have 3 "levels" of certification:
  • CCNA (Cisco Certified Network Associate)
  • CCNP (Cisco Certified Network Professional)
  • CCIE (Cisco Certified Internetwork Expert)
The most popular track is routing & switching, most people first start with routing & switching and take on another track later on. If you are interested in configuring networks for VoIP you will need to know some routing & switching protocols, especially quality of service. Implementing security is also kind of hard if you have no idea what to secure...

On the Cisco website you will always see this pyramid when they are talking about certifications:


At the bottom you see the "entry" level, I'm skipping that one and jumping right to the "Associate" level (CCNA) because that's where most people are starting. As you can see the bottom is very width, and if you go to the professional (CCNP) and expert (CCIE) level it's narrow.This image is chosen for a reason.


If you start with studying Cisco, you'll start with the Associate level (CCNA). There are a lot of topics and technologies that you might have never heard about, so there's a lot of studying for you to do...I believe this makes it a hard exam for newcomers. If you want to self-study for CCNA I recommend you to get this book:
 CCNA: Cisco Certified Network Associate Study Guide: Exam 640-802


It covers all the topics for the exam, if you read this book a couple of times and do all the'll have a very good basic understanding of networking. It shows you the basics of networking, switching, routing, ip, etc.

You can get the CCNA certification by doing 2 separate or a combined exam. If you do the combined exam you need to get a higher score and I only suggest doing this when you feel really confident about your networking knowledge or already have experience.

To beat Cisco exams you need to get hands-on experience. You can achieve this by buying old equipment (from eBay) and practice. This is what you will need at least:

2x Cisco 2950 Catalyst Switch. (any version will do)
2x Cisco 2610 Router with at least 1x Fast Ethernet and 1x Serial Connection.
1x Serial Console Cable (those are the famous blue Cisco cables for console connections)
1x Serial Cable
1x Serial 2 USB (in case you don't have a serial port on your PC or laptop).

If you are planning to continue studying Cisco I would suggest to buy Cisco 2550 Catalyst Switches instead of the 2950's, they are more useful for your CCNP.

It's possible to skip the routers because you can run Cisco IOS (Cisco's Operating System) on your PC or laptop by using GNS3. You can find a brief tutorial on GNS3 here.
Cisco 2610 Router
Cisco Catalyst 2950 Switch
Cisco Serial Console Cable:
Cisco Serial Cable:


This equipment and the study guide should help you to pass your CCNA, Now if you want to continue studying your CCNP you will find that this is much easier (that's my opinion) then when you studied for your CCNA. When you started with the CCNA you had to study complete new material that you perhaps never heard or read about before, now you have a basic level of networking knowledge that you will further develop.

To achieve your CCNP certification you need to pass 3 exams:
  • Route (Routing)
  • Switch (Switching)
  • Tshoot (Troubleshooting)
For passing your CCNP I'd suggest to read the following books:
Routing TCP/IP Volume 1:
This book isn't special for the CCNP but covers all the interior routing protocols and is written very well, a must read for every networking professional.


Routing TCP/IP Volume 2:
Sometimes more is better and that is definitely true for Routing TCP/IP. This book is more about BGP (Border Gateway Protocol), NAT and some IPv6.


The other books you should read are the Cisco Press books that cover the exam goals:
CCNP Route:
This is the official Cisco Press book, covers everything you need to know for the "Route" exam.


CCNP Switch:
Also the official Cisco Press book about the Switch exam. Teaches you everything about switching you need to know to pass the exam.


CCNP Tshoot:
Troubleshooting networks is fun, this book will show you everything you need to know.


Besides reading books you need to increase your hands-on more labs, build networks and so on. You can do a lot of labs with routers by using the dynamips/gns3 software. Checkout my tutorials on GNS3 here.

The new Cisco exams are very "practical". This means you will get a lot of questions you cannot answer if you don't have the hands-on experience. You need to build labs, try stuff out. Just reading the books is not going to be enough!


Now the CCIE is a completely different beast. Honestly you can't compare this to CCNA or CCNP level. To pass the CCIE you need to do a written exam and pass the lab.

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How to run Linux Router Vyatta in GNS3

What is the Vyatta ?

Vyatta is bringing innovation and affordability to the networking industry by delivering advanced routing and security in a software-based network OS that scales from the branch office to the service provider edge. Vyatta has decoupled networking software from proprietary hardware allowing users to leverage the price and performance advantages of standard x86-based hardware and components as well as Citrix XenServer and VMWare virtual or cloud environments.

In this tutorial brezular shows us how to install Vyatta 6.1 Core LiveCD on Qemu image and run it from GNS3.

1. Download Vyatta Core 6.1 LiveCD iso (You need to fill short questionnaire for Vyatta download)

Vyatta download

2. Create Qemu qcow2 image

/usr/local/bin/qemu-img create -f qcow2 ./vyatta6.1vc.img 1G

3. Boot Qemu image with Vyatta 6.1 LiveCD

 /usr/local/bin/qemu -boot d -hda ./vyatta6.1vc.img -cdrom ./vyatta-livecd_VC6.1-2010.08.20_i386.iso -m 512

login/password: vyatta/vyatta

4. Install Live CD

To install Live CD to Qemu image enter this command (as user vyatta)


The tutorial is opened and it walk you through installation process:

Would you like to continue? (Yes/No) [YES]: Enter

Partition (Auto/Union/Parted/Skip) [Auto]: Enter

Install the image on? [sda]: Enter

This will destroy all data on /dev/sda.
Continue? (Yes/No) [No]: Yes

How big of root partition should I create? (1000MB – 1074MB) [1074]MB: Enter

I found the following configuration files
Which one should I copy to sda? [/opt/vyatta/etc/config/config.boot] Enter

Enter password for administrator account
Enter vyatta password: your_password
Retype vyatta password: your_password

Which drive should GRUB modify the boot partition on? [sda]: Enter

Now you successfully install Vyatta.

5. Adapt Vyatta NIC behavior to GNS3 Qemuwrapper

GNS3 qemuwrapper always changes MAC address of presented NIC during the boot of Qemu instance. Vyatta is programmed to save MAC address of existing ethernet interfaces. If MAC address of particular NIC is changed (by GNS3 qemuwrapper) Vyatta preserves the interface with old MAC and create new interface with new MAC.

Each time Qemu instace is restarted the number of interfaces doubled.

These are my steps how to solve it (it must be a better solution but I didn’t find any with Google search):

a) Enable root account on Vyatta 6.1

thank to Tim Peerlings blog

vyatta$ configure
vyatta#set system login user root authentication plaintext-password test
vayata# commit
vyatta# save


Now you should switch to user root:

Password: test

b) Remove vyatta_net_name script (root account needed)

cd /lib/udev/
mv ./vyatta_net_name ./vyatta_net_name_backup
rm ./vyatta_net_name

6. Setup serial console login 

thanks to Petr’s blog 

This configuration redirects output to serial ttyS0 and allows you to use Console in GNS3.
Login as root with su command and modify grub configuration file:

vim /etc/default/grub

Change the lines in configuration file according to these lines
# This file is sourced by update-grub, and its variables are propagated
# to its children in /etc/grub.d/

GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT=”console=tty0 console=ttyS0,9600n8″

# Uncomment to disable graphical terminal (grub-pc only)
GRUB_SERIAL_COMMAND=”serial –speed=9600 –unit=0 –word=8 –parity=no –stop=1″

# Uncomment if you don’t want GRUB to pass “root=UUID=xxx” parameter to Linux
Now update grub with command:


7. Setup GNS3 for Vyatta qemu image

- Start GNS3
- Edit-> Preferences-> Qemu-> Qemu Host

Set your settings according to picture:


Check Kvm option only if your processor supports hardware virtualization. Check Kqemu option only if it is installed and running. If you are not sure with these options let them unchecked otherwise Qemu will be not started.

You need also set Qemu general settings like path to qemu, qemu-img and qemuwrapper.

- Edit-> Preferences-> Qemu-> General Settings

Check the picture  for details:


Login to Vyatta:

login/password: vyatta/your_password

8. Conclusion

Brezular has  made a video to prove functionality of Yvatta Qemu image. In this video three Vyatta Qemu instances run RIP routing protocol.

Video: RIP configuration on Vyatta box:

You can download Vyatta 6.1 Qemu image from here:

login/pass: vyatta/skuska

root account: root/skuska (Don’t use root account for router configuration)

If you use Linux and there is already non-patched Qemu installed in your distro don’t forget to patch, compile and install Qemu for udp tunnels and multicast. The great How to is here:

Special Thanks to Brezular  for this great tutorial.

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All About GNS3

You can find some user based support on the Freenode network of IRC.



#gns3: Focuses on support for the GNS3 product (bugs, recommendations, complaints)

#gns3-labs: Aimed to help with labs and trade topologies.. Not an official GNS3 support channel.

GNS3-Labs Facebook Page

GNS3 Official Site

GNS3 Wiki

GNS3 Technical Blog

GNS3 Forums

Dynamips Tutorial: Dynagen is a front-end for use with the Dynamips Cisco router emulator

Dynamips A forum for everything GNS3, Dynamips, Dynagen and overall help. Great website with videos, configs and files on setting up working labs with some troubleshooting and testing exercises.

BrainBump: This website is dedicated for helping those who are working towards achieving their CCIE.Personally, The author is working towards CCIE voice and this blog will help those who are pursuing Voice/Security/RS CCIE’s.


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Cisco Packet Tracer Video Tutorials

English | MP4 | 1920x1080 | AVC - 1108 Kbps | AAC - 126 Kbps | 916.16 MB
Genre: Video Training

Cisco Networking Academy is a comprehensive e-learning initiative that enables students to develop valuable information and communication technology skills for increased access to opportunities in the global economy. To learn more about the program, how to get involved, career resources for students, how we are addressing the digital divide, and more. Packet Tracer is an application produced by Cisco Systems to provide a virtual simulation of real life equipment and situations.

Cisco Systems Packet Tracer
Packet Tracer OSPF
Packet Tracer Subinterfaces
Packet Tracer Video
Switch VLAN
WAN connection ADSL
CCNA 3 Ch 1 Lab Intro using Packet Tracer 5.0.mp4
Cisco Systems Packet Tracer
configuration frame relay.mp4
Frame-Relay Packet Tracer 5.2 (Cisco) Tagalog Tutorial.mp4
How to configure OSPF in Packet Tracer..mp4
How to configure RIPv2 in Packet Tracer..mp4
Multiuser Connection Packet Tracer 5.1.mp4
OSPF Authentication Lab using Packet Tracer 5.mp4
Packet Tracer - DHCP Server with IP Helper.mp4
Packet Tracer - DHCP Setup.mp4
Packet Tracer OSPF
Packet Tracer Sub interfaces
Packet Tracer Video
Packet Tracer VLANS
Static Routing using Packet Tracer 5.0.mp4
Switch Router Vlan Packet Tracer.mp4
Switch VLAN
Testing Security Policies with Packet Tracer.mp4
Tutorial Packet Tracer 5.1 Nube Fame Relay.mp4
using packet tracer Connecting to a web server using IP.avi.mp4
VTP Trunk VLAN.mp4
WAN connection ADSL
Wifi con Packet Tracer.mp4

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