To learn how to practice with "serious" merezhim possessions, zovsim
neobov'yazkovo mother tight gamanets. You can speed up special
emulators, which are more likely to imitate the need for the middle, or else the whole network.
Packet Tracert
Rozrobnik: Cisco Systems Inc.
web:
cisco.com/web/learning/netacad/course_catalog/PacketTracer.html
OS: Windows XP/Vista/7, Linux (Ubuntu, Fedora)
License: free of charge for registered applicants and course students
Smarter practice with the possession of Cisco was a fat plus when
accept a job, but pay the rate or get a cisco (navit used) can
far from leather. Imovirno, the number of cat emulators is increasing
fate in the river, and the stench is popular with the administrators and those who rely on them.
Vikoristovuyuchi emulator, you can independently prepare for the withdrawal of certificates
CCNA (Cisco Certified Network Associate, Certification Cisco Merezheviy
Fahivets), having "tried" all the available devices and sewing on the mesh.
Let's get back to the official distribution of Cisco - the Packet Tracert emulator,
approved by the Networking Academy, which is awarded for the coverage of that
preparation of various curricula. Program manager: help you to work hard in practice
zdobutі student theoretical novice. For її cherry PT can do everything
necessary, allowing "to be" a measure of various folding with practical
unfurnished kіlkistyu outbuildings. All installations vibrate for help
logical diagrams, for the simulation of representations the whole spectrum of possession,
What is released by Cisco (routers, lamps, access points, etc.). You can change
nalashtuvannya ob'ektiv, simulating data flows and richly іnshoy. Support
a large number of protocols and technologies that are victorious in the possession of Cisco
(See the documentation on the website for the latest list).
The robot with the possession of hot and virtual, but looking like that, it’s necessary to bring
vikoristovuvaty real outbuildings. You can add pay expansion, nalashtovuvati
parameters in the command line or for the help of a graphical interface. Whole process
exchange data of representations in visual diagrams and tables that help visually
Evaluate the in-line improvement of that work.
Officially, the free access of Packet Tracert does not know the destination
only for registering applicants and students in courses (you can know
on disks that reach up to several books from courses of ciscos). Ale - simple
ask to Google, and the program will be needed on hard. Month of installation
no keys are needed, the process itself is standard.
Usі nalashtuvannya vykonuyutsya at the great window in the middle. At the bottom of evil
groups of outbuildings, after the choice of three right ones, they are themselves outbuildings. Significantly
it is necessary for the underwire clatters on the free space in the field in the middle
measure card. Drag "n" drop support
you can ruhati, you can see it too soon. It’s good that PT independently shows deeds
device, for example, when the Wireless switch appears, automatically
all extensions are connected, as if they support the whole type of installation. When stretched
the cable selects the port, which one is connected. One of the badges for
automatically assigned to the type of order, which will speed up the storage of goods at the stage
vivchennya. If a pardon is allowed in the process, then the coristuvach will be taken
advance with a short description (for example, there is no free nest).
So far, all the adjustments of the logical measure were carried out at the Logical Workspace contributor
(Ctrl + L). To go to the physical building and look over the order
to connect, select the Physical Workspace tab in the upper left corner (Ctrl+P).
Also, PT has two modes for displaying robots: Realtime Mode (Ctrl+R)
and Simulations Mode (Ctrl+S). The remembrance is carried out for the help of yarliks at
right lower corner or hot keys. At Realtime, the measure is pracyuє at the first
mode, in the Simulations mode, you can monitor and control the process,
what is needed in the measure (robot attachments, hour intervals, transmission mechanisms
data, etc.) The Activity Wizard will help you create your own
scenarios.
It has been lost to add that the robot was transferred to a richly secured regime, and
also available are a few helpers for customizing Cisco and advanced system,
which helps to expand in all abilities.
Dynamips Emulator
Rozrobnik: open source
web:
www.ipflow.utc.fr/index.php/Cisco_7200_Simulator
OS: Windows 2k/XP/Vista, x32/x64 Linux, Mac OS X
License: GNU GPL
The Dynamips project started in 2005 as a router emulator
Cisco 7200 on PC
on the right handy for training. Today Dynamips can help
other Cisco platforms - series 3600, 3700 and 2600. Moreover, with a choice of different
add-on options: CPU (MIPS64 and PowerPC), RAM (DRAM, Packet SRAM, NVRAM),
different types of cards and ports. Transferred the ability to create virtual
bridges and commutators. The main feature is an attachment that can be emulated
connect to the real network, for which one of the outputs of the virtual router
show up from a real mesh card. Work in hypervisor mode is allowed
rozpodіliti navantazhennia on kіlka systems, even IOS (Internet Operating System)
images are more likely to be occupied in RAM and with a large number of virtual systems
select a lot of resources.
The required package is available from the repositories of other Linux distributions. For
traffic jamming pcap library when installed in Windows
it is necessary to install WinPCAP on your own. Ubuntu/Debian installation
is simple:
$ sudo apt-get install dynamips
All Dynamips parameters can be easily recognized by running yoga with the "--help" key. behind
Locked in is Cisco 7206VXR with NPE-200 and 256MB DRAM. Chob
For other platforms, follow the "-P" parameter (for example, "-P 3600").
Added key "-t" allows you to "change" the inside of the virtual
router (depending on the selected type, the "-t" arguments will be different).
To run, you need a real Cisco IOS image, which is not part of
of the package, and it is necessary to zavantazhuvat okremo (it is easy to find Google, in Merezh
available selections by kіlka gіgіv). Some IOS images are shipped crumpled
look, and before zavantazhennyami їkh it is necessary to unpack:
$ unzip -p c7200-g6ik8s-mz.124-2.T1.bin > c7200.image
Let's start:
$dynamips c7200.image
But the plan is to build Dynamips not too hard to create on yoga basis
mezhu s kіlkoh routerіv, happen to get a little better. Tse zavdannya
You can help with Dynagen help.
as a text front end to Dynamips. Victory simple file
Describing the virtual middle ground, we can easily pick up a sprat of outbuildings.
Golovne, that all settings are selected in one place, the simple syntax is
easy to edit.
$nano v_router.net
# Description of the node on which Dynamips is installed
# Router type
# Way to IOS file
image = /home/grinder/images/c7200.image
# Global parameters, in this case the platform and RAM, if necessary, in the middle
router can be specified specific settings
npe = npe-400
ram=160
# First router
[
# It is possible to connect, our interface will be Serial1 / 0 on R1
connections up to Serial1/0 R2
s1/0 = R2 s1/0
[]
# Zalishaєmo everything for zamovchuvannyam
This is the simplest example, to understand the essence of nalashtuvan. The "combat" configuration can
Get a dozen different routers and configurations. For example, to call
one of the outputs of the virtual router with a fenced-in interface of the real phone
virtual system, we write:
s2/0 = NIO_linux_eth:eth1
Start up dynamips in hypervisor mode (if you can
start at foni by adding "&"):
$ sudo dynamips -H 7200
Cisco Router Simulation Platform (version 0.2.8-RC2-amd64)
Copyright (c) 2005-2007 Christophe Fillot.
Build date: May 9 2009 18:06:28
ILT: loaded table "mips64j" like cache.
ILT: loaded table "mips64e" like cache.
ILT: loaded table "ppc32j" like cache.
ILT: loaded table "ppc32e" like cache.
Hypervisor TCP control server started (port 7200).
Now Dynagen:
$dynagen v_router.net
After image acquisition (the process will be displayed in the console, when it is launched
dynamips) and setting up virtual routers will take the requested console
management. Introducing the food sign or help, we take a final note about the commands. By typing "help
command", know about all the parameters of a particular command.
autocomplete input for the help button
restart, suspension and continuation of the commands start, stop, reload,
suspend, resume from the assigned router name or the /all key for all attachments:
Must have registry teams, so you need to be respectful. Let's look at each other
list of working routers:
=> list
Name Type State Server Console
R1 7200 running localhost:7200 2000
R2 7200 running localhost:7200 2001
Now for help command:
$ telnet localhost 2000
We can connect to the port specified in the Console field. Want to be simpler
connect by typing im'll add to the Dynagen request row:
In the okremomu vіknі vіdkriєtsya vіkno terminal
lashings.
Dekіlka of virtual routers can pretty much take over the system. And why
independent of real work. Tse vіdbuvaetsya that
Dynamips doesn't know if the router is rooting the robot, and if it's in
smart mode. The idlepc command allows you to analyze IOS images from
that znachiti tsikli simple. At the first start, the value is not inserted:
*** Warning: Starting R1 without a valid idle-pc value
The idle-pc number required can be removed by entering the "idlepc" command in the dynagen console
get router_name":
=> idlepc get R1
If you see a sprat value, the most optimal value is marked with the "*" sign.
Then they gave the command to ring, and it is necessary to enter one of the digits,
inversely idlepc. After which value will be added to
win. When starting Dynamips manually idlepc
ask for the help of the "--idle-pc=" parameter, as an option, in
Dynagen config router sections can be added:
idlepc=0x6076a394
Revisiting the entire list of idlepc is simple:
=> idlepc show R1
Everything, the router can be lashed.
The project outlined the dekilcom with subprojects to promote Dynagen more
handy. For example, gDynagen
provides a single console for entering commands for Dynamips + Dynagen. Generator
lashing for Dynagen –
confDynagen
add a new configuration mode, which allows you to change
Dynagen parameters "on the fly" without a grain of the virtual line.
GNS3 simulator
Rozrobnik: open source
web: ns3.net
OS: Windows 2k/XP/Vista, *nix, Mac OS X
License: GNU GPL
GNS3 (graphical network simulator)
a free license that allows you to emulate the measures of the great expansion. Korisniy
to administrators and engineers, as well as to koristuvachs, as they are getting ready for the task
Cisco certifications (CCNA, CCNP, CCIP, CCIE) and Juniper Networks (JNCIA, JNCIS,
JNCIE). To ensure maximum functionality, you should also install
Dynamips, Dynagen and Qemu virtual machine. For burying packages, it is necessary
Wireshark (wireshark.org). Crim image Cisco IOS, GNS3 vmіє pratsyuvati z
olive JunOS images (juniper.net/ru/ru/products-services/nos/junos) –
operating system, which is victorious in the established company Juniper Networks.
You can emulate simple Ethernet, ATM and Frame Relay rolls and firewalls (ASA,
PIX). How to connect with Dynamips, easily connect a virtual switch to the edge
maps of real and virtual systems. І smut - all nalashtuvannya viroblyayutsya in
intuitively understandable graphic medium.
The GNS3 package is already available from the repositories of most major distributions
linux. For Debian/Ubuntu, to install, type:
$ sudo apt-get install gns3
To highlight the latest version, next add the repository
gpl.code.de. Detailed instructions for your distribution kit look for the address
gpl.code.de/oswiki/GplcodedeApt. For self-selection of packages
need Python and low libraries: Qt, PyQt and others.
When you first start the Setup Wizard, which explains two main
help before starting the program: check the correctness of the path in Dynamips and when
the need to correct yoga. Plus zavantazhennya IOS-images.
The window can be called standard. Evil is in "Nodes Types"
badges of outbuildings, as if we forgive the pulling of the windows, we place them at the window in the middle,
being a virtual measure. To the clapping of the bells and whistles, we call out the window of authority, de lash
specific parameters for a particular router, including
adapters. The context menu allows you to run, download attachments, save
IDLE PC log into the console. Primitive tools are available on the panel
painting (inserting a stake, a straight cut, a baby). Merezha, which is made up of one
routers, not just nachno, other components and services (servers, printers
etc.) are added via "Edit – Symbol Manager".
The right to view "Topology Summary" is recognized for navigation, here
all devices are displayed (practically marked with a green icon). Like an image,
vidpovіdnogo vibrannogo pristroy, in the GNS3 collection is not available, then when trying
to add such a router, it is necessary to advance. Schob add IOS-image or
Specify the rendering of Dynamips hypervisors, displaying "Edit – IOS images and
hypervisors". Applies to an image file, depending on the platform, model, and number of
RAM is displayed automatically. Qi values will be chosen for locking, їх
you can scribble. In the IDLE PC field, the required value is specified (as it is
apparently). At the bottom in the middle is the Dynagen console, recognized for
direct input of commands.
After putting on the map all the outbuildings for the help of the console, we proceed to them
nalashtuvannya, zokrema, we install links to the clicks "Add a link". Created
The changes are saved from the file for re-writing.
One more project -
Dynagui, in person
what shows connection between routers. Ale for the functionality of the wines
up to GNS3, and the rest of the update is dated 2007 rock.
Visnovok
Do not varto nekhtuvaty software emulators
underestimate their ability to propagate, there are more Cisco retailers
Systems and Juniper Networks are quick to recommend them.
Active Cisco Router Commands
help - completion of all commands
setup - launching the router configuration wizard
show config - revision of current settings
configure terminal - enter host setup mode
enable [level number] – transition to the first level
hostname Router - enter the name of the router
ip http server - start web interface
ip route 172.1.1.0 255.255.255.0 10.1.1.1 permanent - static route
clear ip route * - clearing all routes
show ip route - route revisionThe Cisco console supports auto-completion of tab selections,
to that povnistyu zaprovadzhuvati commands not obov'yazkovo.
Projects in one row
Network Simulator-
simulator
routing. Optionally include the animation module nam (network animator).Xentaur - solution
for the organization of a measure that combines real outbuildings, emulators and
Xen virtual machines.netsim
– a robot simulator for the protocols of the lower level, with 3D visualization
processesProfSIMs,
RouterSim,
CertExams.com
- commercial simulators and visualizers that allow you to prepare for
Cisco certificate issue.
INFO
For the help of the Packet Tracert program, you can
virtual offices.Packet Tracert has painting tools available to help you better
show merezha on the map. So, for example, Okremi elementi chi groupi
can be rozfarbuvati different colors.
WARNING
Some old versions of IOS do not support idlepc.
Good day! Today, I want to tell you about one of the cicavian tools of a fencing engineer like UNL. The purpose of this medium is emulation and visual design, which allows you to design both Cisco images (Dynamips emulator), and Juniper or QEMU components. The list of supportive possessions is great, which I managed to make short, so l2 commutators, so that in this hour I play STP and yoga variations, and Cisco Packet Tracer and GNS3 cannot cope with these tasks.
To the point, to tell someone else, you know the place, you can use a lot of technical gadgets, including batteries, batteries, headsets.
Well, well, let's build our virtual lab for a bit:
- Capture the image of the virtual machine (I selected the Google Drive item);
- Optional VMWare Player (no cost);
- Display the image of the virtual machine in VMWare Player. If possible, it’s better to go into the settings and add (if possible) operational memory, processor cores and tick the virtualization mode:
- We need images about IOL (IOS on Linux), how to get them (341 Mb). Є і L2 and L3 extension.
- We also need a program for downloading files behind a stolen protocol.
- Starting the virtual machine, logging in root:unl. Bachimo requested http://192.168.241.129/ from the console.
Your IP addresses may vary.
- Open your browser and choose your web interface. You can log in under oblіkovy dannymi admin:unl
- For help, WinSCP is downloaded to the server (we create a connection via scp with root:unl cloud data on ip)
Connect and go to the catalog /opt/unetlab/addons/iol/bin, then download the bin-images of our IOLs. There you need to place the file iourc offensive zmistu:
For some reason, for some reason, the image cannot be launched, for example, the host name has changed, or else, you can speed it up with a keygen (in the archive for 4), ./scripts/keygen.py. Copy it from the virtual machine and run it like this (intellectually pointing out the correct path):
# python /path/to/keygen.py
Also, add a varto to the /etc/hosts file in the next row:
127.0.0.0 xml.cisco.com - We set the access rights with the command:
/opt/unetlab/wrappers/unl_wrapper -a fixpermissions - Now let's reconsider that everything works correctly:
# cd /opt/unetlab/addons/iol/bin
# touch NETMAP
# LD_LIBRARY_PATH=/opt/unetlab/addons/iol/lib /opt/unetlab/addons/iol/bin/i86bi-linux-l2-ipbasek9-15.1e.bin 1
Replacing the commutator
- Now pratsyuvatimemo at the web interface. If we have 10 krok viishov, then we can’t winknut folds. Log in, select LABS from the top menu. At the Actions branch, select Add a new lab
Enter data, name of the laboratory work, version, for the reason you can indicate the author.
We add active attachments (Nodes). Here is a great choice of switches and routers of various vendors. We have occupied only a few IOLs so far.
To that add IOL. Take 3 pieces, change the icon and save the Serial interface.
For z'єdnannya we need a line zv'yazku. Here it is called Networks. Dodamo three measures
Now with the right mouse button, click on the node and select the Interfaces item.
Here we select the appropriate meshes on the skin interface
Axis yak topology weishl
Vіdkriєmo lab to launch
Let's run all nodes
Let's go to the console before I add it. Before the speech, as if under the node, the tricot icon means that the node is running, as if the square means zupinena.
To make it easier to get to the annexes, you can quickly edit the association protocols. Registry file:
Windows Registry Editor Version 5.00
@="URL:Telnet Protocol"
"EditFlags"=dword:00000002
"FriendlyTypeName"="@ieframe.dll,-907"
"URL Protocol"=""
"BrowserFlags"=dword:00000008
@="c:\putty.exe,0"
@=""
@="\"c:\putty.exe\" %1"Take the file like 1.reg and import it to the registry.
- We review the work of these protocols, which are not available in CPT and GNS:
Haha! Practice! The top right image shows all STP changes. Cisco Packet Tracer has no commands debug spanning-tree events, and in GNS3 it was not possible to start the L2 switch, but etherswitch router I didn’t want to practice so that I could get better
Friends! Join our
Good time.
If you want to come in about those, how to emulate Cisco IOS, everything is scrolling in your head: dynamips, dynagen or gns3, yes, you want everything in the kit, dragging the GUI Front end.
Recently, I wrote about those that Cisco on September 17, in the laboratory CCIE RS, added Layer 2 to the TroubleShooting section, vicorist virtual emulation based on L2IOU.
I didn't know before that Cisco has its own emulator, so I searched for information. It turned out that it was possible to successfully run the whole thing on the right, and everything is not bad, and there are no more processor clocks like dynamips.
Zagalom, less zatsіkavilo and I tried it again.
IOU runs on a unix-like system, I installed a virtual machine (vmware fusion under Mac OS), downloaded the remaining version of Linux Ubuntu, installed it from start to finish.
In my view the file is named like this: i86bi_linux-ipbase-ms
If we try to run yoga, then it is necessary to step forward:
./i86bi_linux-ipbase-ms
***************************************************************IOURC: Could not open iourc file
So, bachimo, that it was not possible to open this iourc file, let's do it with the touch iourc command and try to run it again:
./i86bi_linux-ipbase-ms
***************************************************************
IOS On Unix—Cisco Systems confidential, internal use only
Under no circumstances is this software to be provided to any
non Cisco staff or customers. To do so is likely to result
in disciplinary action. Please refer to the IOU Usage policy at
www.in-iou.cisco.com for more information.
***************************************************************
Missing application IDUsage:
: unix-js-m | unix-is-m | unix-i-m | …
: instance identifier (0< id <= 1024)
options:
-e Number of Ethernet interfaces (default 2)
-s Number of serial interfaces
-n Size of nvram in Kb (default 16KB)
-b IOS debug string
-c Configuration file name
-d Generate debug information
-t netio message trace
-q Suppress informational messages
-h Display this help
-C Turn off use of host clock
-m Megabytes of router memory (detailed 128MB)
-L Disable local console, use remote console
-u UDP port base for distributed networks
-R Ignore options from the IOURC fileBachimo Missing application ID
./i86bi_linux-ipbase-ms 10
***************************************************************
IOS On Unix—Cisco Systems confidential, internal use only
Under no circumstances is this software to be provided to any
non Cisco staff or customers. To do so is likely to result
in disciplinary action. Please refer to the IOU Usage policy at
www.in-iou.cisco.com for more information.
***************************************************************IOU License Error: host not found in iourc file
ubuntu=<16 char license>;
Good, now we understand (IOU License Error: host not found in iourc file, it is necessary to place the following rows in the iourc file:
ubuntu=1010101010101010;
de, 1010101010101010 whole numbers, be it, 16 pieces 🙂
After that, we have written the iourc file, we try to run it:
./i86bi_linux-ipbase-ms 10
***************************************************************
IOS On Unix—Cisco Systems confidential, internal use only
Under no circumstances is this software to be provided to any
non Cisco staff or customers. To do so is likely to result
in disciplinary action. Please refer to the IOU Usage policy at
www.in-iou.cisco.com for more information.
***************************************************************IOU License Error: invalid license
License for key 10ac82b5 is needed on host "ubuntu".
Lining: license for this key and host from the following location:http://wwwin-enged.cisco.com/ios/iou/license/index.html
Display in your file as follows (see also the web page
for further details on iourc file format and location)
ubuntu=<16 char license>;
Now mi bachimo IOU License Error: invalid license
Now we will have a little bit of "shamanity".
Zocrema, we need to disassemble the file, find out if the license is valid, and correct one bit there.
I have worked hard to help the IDA.
Know the axis of such a re-verification:
Bachimo jnz, here we need to change the address of the transition.
Let's go to Hex, then for help hexeditor asks for 75148B45FCE8DB and replaces the first 75 with 74. Take care, try to run:
Router#sh ver
Cisco IOS Software, Linux Software (I86BI_LINUX-IPBASE-M), Experimental Version 12.4(20090407:185408)
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Wed 08-Apr-09 01:29 by yuiuROM: Bootstrap program is Linux
Router uptime is 30 minutes
System returned to ROM by reload at 0
System image file is "unix:./i86bi_linux-ipbase-ms"Linux Unix (Intel-x86) processor with 86409K bytes of memory.
Processor board ID 2048010
8 Ethernet interfaces
8 Serial interfaces
16K bytes of NVRAM.Configuration register is 0x0
Bachimo, what do you do 🙂
In the following articles, we choose how to induce topology based on IOU.
To swedish zustrіches 🙂
p.s. I have described the process of launching over the top, as if I had some problems, I wrote in the comments, or on the forums.
p.s.s. on the prohannya of the working people, the English help, as it helped to realize everything. http://evilrouters.net/
There is a video. So just to search for information about the source of the Chinese food, it is also possible to know the basic information.
Viewed: 65204
7
What is GNS3?
GNS3 is a graphical network simulator that allows you to simulate a virtual network from routers and virtual machines. An indispensable tool for learning and testing. Pratsyuє practical on all platforms. It is wonderful to go for setting up stands on robotic steel machines.Depending on the hardware platform, on which GNS3 can be installed, it is possible to create complex projects that are formed by routers in Cisco, Cisco ASA, Juniper, as well as servers for managing networked operating systems.
For your ability to gain access to the real GNS3, you will become a practical laboratory. In addition, laboratory robots that are trained in GNS3 can become an addition to students who are preparing for CCNA / CCNP and CCIE certification tests from a real laboratory.
The only drawback of this software is the ability to fully simulate other Cisco switches. There will be no changes in new versions, because the reason for this is the cardinal difference in the hardware platform of routers and Cisco rolls. In some cases, it is not enough time to go for the help of the NM-16ESW treadmill module. It's a pity that the listing of commands is somewhat different from the NM-16ESW version and the real Cisco scrolls, but it's generally suitable for learning.
The GNS3 warehouse does not include images of IOS/IPS/PIX/ASA/JunOS, stinks of stench are part of the commercial products of leading companies, and there is no direct reference to the GNS3 project. At the moment, this is no longer a problem, for those who know the necessary image are no longer important.
One of the most important features of GNS3 is the ability to combine topology with a real network. It gives just a unique opportunity to put it into practice, be it a project without any real possession. The WireShark widget allows you to monitor traffic in the middle of the design topology, which gives additional information for the understanding of the technologies that are being developed.
And above all, GNS3 is absolutely cost-free. Tse vіdkrite software security, and whether someone can take advantage of yoga. There are several versions for Linux, MS Windows XP and Windows 7, as well as for MacOS.
GNS chi IOU?
Krim GNS is another simulator - IOU - IOS on UNIX. GNS chi IOU? IOU chi GNS? Let's start with IOU, so we won't be able to beat yoga for the time being.As you can see from the name - put on top of UNIX. Earlier it was Solaris, now it is supported by Linux.
The most popular yoga pluses:
- Mayzhe povnotsіnna podtrimka yak L3, і L2. This emulator is victorious when storing CCIE laboratory tests.
- Low power to PC resources. More precisely to the CPU. Remembrance is also required.
- There is no border between boards and interfaces. At the nalashtuvannyah, you simply indicate what you want and what you want.
Cons:
- Naygolovnіshe - tse proprietary software, which is not officially recognized in any way. For torrents, image L2IOU, L3IOU, but it's illegal.
On the cisco.com website, it was written:Cisco IOS on Unix is a tool that is installed for the internal desktop only. Distribution of IOU images customers or external persons, or discussion of IOU with customers or external persons, is prohibited. Don't do it or we'll have to come and kill you.
- the installation and adjustment of the IOU is not considered simple. It is necessary for the mother to be calm and able to work in nixes, to get to know the topologies, files, adjust and save the configuration of the outbuildings.
- Poor graphical interface. Let me just marvel at the topology that has emerged. The creation of topology - only through a textual set of rows that describe the links and extensions. Zagalom, you need to call.
At the next stage, mi rosepovimo, how to practice with IOU and we will guide the preparation of the CCIE RS stand in the home minds.
Pochatkove nalashtuvannya GNS3. Adding a Cisco IOS Image
The most important advantage of GNS3 is the simplicity and efficiency in the creation of projects for the development of laboratory robots. A program has been installed to make a minimum of cob patches, so that you can work for a couple of whilins.Please, what do you have already. Dodamo їх. Open the program menu item Edit -> IOS images and hypervisors.
You need to specify the path to the Cisco IOS image file
As soon as the image file is retrieved, a platform will be automatically selected for each assignment image and, in some cases, a list with a list of available models will become available. The minimum recommended amount of RAM will also be installed.
For most options, at this stage, you can click Save, and then Close and proceed to create a new project with different routers on the previously assigned platform.
Some types of GNS3 don't recognize the platform, the model is the required amount of RAM for the selected Cisco IOS image. In such a state of mind, all the parameters can be changed independently.
Give respect to the IDLE PC field. So far, it’s not chіpaєmo.
After all the necessary parameters have been entered, do not forget to press the Save button. The selected image will appear in the list of available images for creating the project.
Let's move the router to a working Maidan. Obviously, we take that model, for which there is an image. Pardons are not guilty buti.
Click on the beast on the green "Start" button. Give respect to those who have increased their interest in the CPU. One router vantage 100% one CPU core. If you have, for example, a Dual Core CPU (tobto 4 threads), then you will have a 25% interest rate. Now hvilyuvannya needs to calm down. 
For which, select Idle PC from the context menu. The very mechanism allows you to optimize the resource utilization of the processor. The PC calculates the value and pronounces the list to you. It is recommended to choose the value with the sign *. As soon as the stench vikoristovuyutsya, CPU zavantazhennia drops to zero. Yakscho raptom not vyyshlo, iteruemo doti, the docks are not reachable bazhany. Now, after the impending launch, after the IOS GNS takeover, the entire processor hour is not to blame.
Everything is ready for connection. GNS can be standard for this. Select Console from the context menu. For locking the GNS software program Putty, or you can use your own, for example, SecureCRT for customizations. It is sufficient to indicate the path of the terminal program file.