Network simulators ENSP, Eve ng, GNS3, packet tracert

If a worker wants to do a good job, he must sharpen his tools first , Learning network can not have a real network environment to use , At this time, you need to use network simulation software , Simulate some network environment , Build some Network topology , Then study network technology

Don't be obsessed with the choice of simulator when you first learn ,PT、GNS3 It's enough . And then up here eNSP、EVE-NG ( recommend )

1、eNSP, Chinese name enterprise network simulation platform

eNSP (Enterprise Network Simulation Platform) It is a product independently developed by Huawei 、 Free of charge 、 Extensible 、 Graphical operation of the network simulation tool platform , Mainly for enterprise network router 、 Software simulation of switches and related physical devices , Support large network simulation . The simulator is automatically docked VIRTUALBOX virtual machine

eNSP The official website has been taken off the shelf

eNSP V1.3.00.100 Version download （ It needs to be installed by hand Winpcap,Wireshark,VirtualBox）
link ：https://pan.baidu.com/s/1Bkdjv51E0ve34jX3QaqD_A Extraction code ：yoc0

eNSP V1.2.00.510 Version download （ Integrated installation , Automatic installation Winpcap,Wireshark,VirtualBox）
link ：https://pan.baidu.com/s/1EVPztWoaB95U5Lki_ONotw Extraction code ：9r19

The interface is as follows ：

Click the menu in the upper right corner —— Tools —— Register device

Check the first three AR_Base、 AC_Base、 AP_Base

eNSP Several commands commonly used in ：

1.display　　 Use display  A series of commands can be checked to see the basic information or operation status 　　 Such as ：display version  Check the router information 　　　　display vlan  see VLAN Information  2.system-view　　<   > View for users 　　system-view  Commands can be converted to system views , You can configure system parameters and enter the configuration view of other functions  3.sysname　　sysname+ The host name can be changed directly  4.quit、return   Exit command  5.save  Save the current configuration , You will be prompted whether to continue saving , Input “y” Confirm to save the action  6. Configure router interface IP Address 　　interface GigabitEthernet 0/0/0　　ip address 192.168.1.1 255.255.255.0

2、EVE-NG

Official website ：https://www.eve-ng.net/

EVE-NG Chinese net ：https://www.eve-ng.cn/doku.php

EVE-NG（ Full name Emulated Virtual Environment - NextGeneration）. Following Unetlab 1.0 After Unetlab Of 2.0 The new version , Changed the name , The original name is UnifiedNetworking Lab Unified network laboratory . This simulator can not only simulate network devices , You can also run all virtual machines . Theoretically , As long as the virtual disk format of the virtual machine can be converted to qcow2 Can be in EVE-NG Up operation . therefore EVE-NG It can be regarded as a simulated virtual environment .

EVE-NG It was developed by foreign gods , Integrated dynamips,IOL,KVM. It is deeply customized Ubuntu operating system , You can install it directly in x86 On the physical host of the architecture . It also has the ova edition , It can be imported to VMware And other virtual machine software .

EVE-NG It has more advantages in interaction mode , And GNS3 As like as an apple is to an oyster .GNS3 It's more like the software users use , Only GNS3 Supported by OS Can be used ; and EVE-NG More like CS Model ,EVE-NG Server side , The client can support http/https Arbitrarily OS.

EVE-NG It is divided into professional edition and Community Edition , The professional version is charged , The Community Edition provides free use

EVE-NG, Is currently the X86 In the instruction set , The most powerful network simulation software , Basically, as long as there is an image of the relevant manufacturer , Both can be used. Qemu To run .EVE-NG It's using C/S framework , Package the environment in GNU-Linux Distribution version Ubuntu On , As a server . The machine that does the experiment is the client , As long as the client uses Web After connecting to the server ,EVE-NG Our experimental environment and topology will be web The way to present , Just upload the image , After connecting the topology , You can do network experiments of various manufacturers .

eve-ng Integrated Dynamips、Qemu、IOU/IOL And other simulation environments . Don't talk about Cisco and Huawei .H3C、HillStone、Juniper And other network device images of well-known network manufacturers , Both can be used. Qemu Run .

Theoretically speaking , As long as the machine CPU And memory is large enough , Basically, a large data center network can be completely simulated .

Of course , because EVE-NG Is running on the X86 Of GNU-Linux Distribution version Ubuntu Upper , So it still doesn't support ARM Instruction set Apple Silicon：M1、M1 Pro/Max Of Mac.

If you are using X86 Instruction set Intel Silicon Of Mac, Direct use Vmware Fusion perhaps PD Virtual machine can run . Use EVE-NG Also need some GNU-Linux Threshold . The loaded vendor image also needs to be found by yourself .

3、GNS3

Download address ：https://www.gns3.com/

GNS3 It consists of two software components ：

• GNS3 Integrated software （GUI）. This is a GNS3 The client part of , Can be locally PC（Windows,MAC,Linux） Install integrated software on , And use this software to create a topology . This is what you usually see in screenshots , As shown below ：

  

• GNS3 virtual machine （VM）

Use GUI The client is in GNS3 When creating a topology in , The created device needs to be hosted and run by the server process . For the server part of the software , There are several options ：

1. Local GNS3 The server . Local GNS3 The server is installed GNS3 One set of all-in-one software PC Run locally . for example , If you are using Windows PC, be GNS3 GUI And local GNS3 The server is running as a process Windows Run in . Other processes （ Such as Dynamips） Will also be in your PC Up operation ：
2. Local GNS3 virtual machine . Use GNS3 VM（ recommend ）, You can use VMware Workstation,Virtualbox or Hyper-V Wait for virtualization software in PC Run locally GNS3 VM
3. long-range GNS3 virtual machine . You can also use VMware ESXi Run remotely on the server GNS3 VM, It can even run in the cloud GNS3 VM.( recommend )

4、Packet Tracert

Official website ：https://www.netacad.com/zh-hans/courses/packet-tracer

Packet Tracert download ：https://www.packettracernetwork.com/

Packet Tracert Can simulate routing and switching protocols , for example STP,HSRP,RIP,OSPF,EIGRP and BGP, Its degree reaches the current Cisco CCNA Courses and application layer protocols （HTTP,DNS etc. ） The requirements of , To simulate network transmission .

5、Cisco Modeling Labs ( Cisco modeling lab )

Official website ：https://developer.cisco.com/modeling-labs/

You need to buy a license

6、H3C HCL

H3C Network device simulator Download from the official website ：https://www.h3c.com/cn/Service/Document_Software/Software_Download/Other_Product/H3C_Cloud_Lab/Catalog/HCL/?CHID=190654&v=612