Learning about Cisco Router Configurations

  • The first step in configuring a Cisco router is to build a console session. The console session is made by connecting the console port on the router with the COM 1 port on the PC.
  • After that activates terminal emolution, which is commonly used on Windows OS is hyperterminal (configuring the router via Minicom on Linux). Activate hyperterminal, make sure the selected port is COM1, then configure it like:
    Bits per second: 9600 bps
    Data bits: 8
    Parity: none
    Stop bits: 1
    Flow control: none
  • Then turn on the power on router, and it will start the boot up process. After the boot up process is complete, the router displays a notification “Would you like enter the initial configuration dialog?” Answer “no”. After that the router will display a notification “Press return to get start“. For the next process, press the “Enter” button. A router that has not been configured, will display the prompt “router>” The command: we are in the operating mode of the user EXEC. To start configuration, type “enable” as in the following example:
    Router> enabled
    Router #
  • In EXEC privileged operating mode, configuration is done in global configuration mode, meaning that the configuration in this mode affects all systems. Previously we were in privillege EXEC mode, to switch to global configuration mode the command is:
    Router # config terminal or
    Router # conf t

The basic configuration that needs to be done is:

  • Hostname
    Function gives a name to the router
    router (config) #hostname the name of the router that was created, for example the name of the router that was made cisco, the form of the command:
    router (config) #hostname cisco
    cisco (config) #
  • Enable password
    Function activates the command enable password
    cisco (config) #enable password password that is created, for example a password that is made cisco, the form of the command:
    cisco (config) #enable password cisco
  • Enable secret
    Functioning activates the secret word in the enable command, its function is the same as the enable password command, but enable secret has a higher priority and secret word in encrypted form.
    cisco (config) #enable secret the secret word is created, for example the secret word that is created is a class, the command is:
    cisco (config) #enabel secret class
  • Console line
    Function activates passwords in the line console, so that only users who have my password can access the router via the line console. Routers only have one line console.
    cisco (config) #line console 0
    cisco (config-line) # password word-password created
    cisco (config-line) # exec-timeout 5
    cisco (config-line) #login
  • Auxiliary line
    It functions to activate the password in the aux line, so that only users who have my password can access the router via line aux. The router only has one aux line.
    cisco (config) #line aux 0
    cisco (config-line) # password word-password created
    cisco (config-line) # exec-timeout 5
    cisco (config-line) #login
  • Line Virtual Terminal
    Functioning activates the password on the virtual terminal line, so that only users who have my password can access the router via the virtual terminal line. The router only has 5 virtual terminal lines (vty).
    cisco (config) #line vty 0 4
    cisco (config-line) # password word-password created
    cisco (config-line) # exec-timeout 5
    cisco (config-line) #login

Know the Functions & Uses Part of a Cisco Router

Who does not know this one system device, he is Cisco. Cisco routers function as a link between two or more networks to forward data from one network to another. Routers have parts similar to PCs. Let’s see what the parts of a Cisco router are:

1. RAM

The main functions of RAM on the router are storing the current configuration (running configuration) and the active IOS operating system, storing the routing table, handling the ARP cache, handling fast-swtiching cache, providing temporary memory for file configuration, handling packet buffers, managing packet queues. The nature of RAM is that all stored data will be lost when losing resources or when it will restart.

2. NVRAM (Non Volatile RAM)

NVRAM is useful for storing start-up (start-up configuration) configurations. The contents will remain even if the router loses power.


Flash is useful for storing IOS (Operating System Image). This memory can store various IOS software versions. It is a type of EEPROM (Electronically Erasable Programmable ROM), so even if the router loses power, the contents remain.

4. ROM

ROM is useful for storing the bootstrap system which functions to manage the process and run the Power On Self Test (POST) and IOS Image.


The interface is an external component of a router. Before configuring the router, each component’s function must be known in advance because the components to be connected to the router use different interfaces depending on the component to be connected. The picture above shows the standard interface that is owned by a router which includes:

Serial Ports, consisting of Serial0 and Serial1

Fast Ethernet Ports, you know everything

Console Port, port to connect the router to the outside world, this port will connect to the serial port on our PC using a Roll Over cable

Auxiliary Port, almost the same as the Console Port, and not all of these ports are owned by the router

Power Switch, for power

How can we connect to the router? We can choose the alternatives below, namely through:

Console Port

Aux port

Telnet (Ethernet or Serial Port)

What are the differences between Cisco and Mikrotik routers?

Today, I will tell you about the comparison between Cisco and Mikrotik, maybe we don’t know what the differences are. well … for that I will explain it to all of you …

         Microtic is an operating system that includes software installed on a computer so that the computer can act as the heart of the network, controlling or managing data traffic between networks, this type of computer is known as the name of the router.

         Cisco is the main equipment used on a wide network or Wide Area Network (WAN). With Cisco routers, information can be forwarded to remote addresses and on different computer networks. The aim is to be able to forward data packets from a LAN to another LAN, Cisco router.

Background :
      At this time we need to know what are the differences from Cisco and Microtic because when we make a network we have to understand what the quality or weaknesses and strengths of the devices we use.

Purpose and objectives :
Know the weaknesses and strengths of Cisco and proxy ..
Knowing the meaning of cisco da mikrotik.

The function of Mikrotik:
         Microtic functions for small scale networks and large scale, of course this is adjusted to the resource rather than the computer itself.

Cisco functions:
        Cisco functions as a connector between two or more networks to forward data from one network to another. Routers have parts similar to PCs

 Cisco And Microtic Comparison:
      In Cisco there are several types of Router series, the more sophisticated the more sophisticated the series and complete features provided by Cisco but the price is also more expensive.
Switches and routers have many similarities – both have RAM, ROM, NVRAM, and the CPU and the same provide a Console port. Like Sweden, some types of routers provide module upgrade facilities so they can add capabilities.
Routers can also be operated via the CLI. The router uses the IOS operating system. If we understand the basic principles of using IOS commands, we will not experience many obstacles when we start learning to operate a router.

       While Mikrotik RouterOs are Operating Systems and software that can be used to make computers become reliable router networks, including various features created for IP networks and wireless networks, suitable for use by ISPs and hotspot providers.

Cisco Packet Tracer Tutorial: Peer to Peer and Client Server Network

In this Cisco packet tracer tutorial, we will simulate a Peer to Peer and Client Server network. Because in the previous article I have not discussed the Peer to peer network and Client Server. I will explain briefly in advance so that you and your readers will understand the basis of what you are practicing.

Peer-to-peer network (P2P) is one of the computer network models consisting of two or several computers, with the main goal is to share resources and services, such as the use of programs, data and printers together.

-The advantages of this peer to peer network: easy and inexpensive in its implementation, does not require special software and does not need to have a network admin to manage it.

-The lack of peer to peer networks: not suitable for large-scale networks and low security levels.

Network Client Server is a network that one of several computers functioned as a server to serve, while other computers are made into clients.

-The advantages of this client server: easy backup, special management and a good and safe administration system.

-Lack of client server: large installation costs, spec must be qualified and server dependency.

Enough of the theory, we go straight to the practice of simulating it.

Peer to Peer

  • Open the Cisco Packet Tracer program that you have installed
  • Create network design as shown
  • Use a crossover cable to connect the two computers
  • Then now you will manually set the IP Address of each computer, click on PC0> move to the Desktop tab> click IP Configuration ip configuration
  • Continue to select the radio Static button to manually set the IP address, fill it with IP> click on the subnet mask, it will automatically fill in by default
  • When it’s finished, click the cross (x) in the right corner to close the windo
  • Then do the same thing as in steps 4-6, but fill in the IP address PC1 with
  • After all the configuration has finished you make … Continue to the testing phase of the connection of the two PCs
  • Click PC0 again then move to the Desktop tab> select Command Prompt
  • After the Command Prompt window opens, type the command ping which is to test the connection to PC1. Functioning or not … If the connection to PC1 is successful, a message will appear “Reply from blah blah blah …” as shown below the ping test
  • In addition to testing through the command prompt, we can also test via the Packet Data Unit (PDU) available on Cisco Packet Tracer.
  • Click the Envelope icon with the plus + (1) sign on the common toolbar on the right or press the letter P on the keyboard for the shortcut. Continue to move to Simulation mode (2), and click Autor Capture / Play (3)
  • Then click on PC0 and also PC1, when the data packet simulation simulation shows a green check mark on PC0, it means that the packet was sent successfully or on the PDU list window there will be a message “succesfull” as shown below.
  • Congrats! You created a Peer to Peer network simulation. Continue to the Client Server

Client Server

  • Create a new file by clicking on the menubar or on the toolbar, or via the Ctrl + N shortcut key
  • Here you will need network tools such as Server, Switch, PC and Straight Cable
  • Create Client Server network design as shown below
  • Configure the IP Address from the start server and the 4 PCs used … The switch does not need to be configured again.
  • Follow steps 4-6 above that I have explained. With IP Address Server and PC1-4
  • Perform testing from Server to 4 PCs used. You can go through the Command Prompt (like steps 9 and 10 above) or through the PDU like steps 11 and 12 above.
  • The Client Server model is still manually configured, later I will discuss about how to develop it into a DHCP network, what is DHCP? I will discuss later in the next article …

If all the steps you follow are successful, then you have successfully simulated the Peer to Peer network and Client Server on Cisco Packet Tracer. Okay That’s pretty much before, the Cisco Packet Tracer Tutorial Peer to Peer Network and Client Server. Hopefully it can be useful and increase your insight. Thank you

Simple Cisco Packet Tracer Tutorial for Beginners


At this stage we will introduce windows on Cisco Packet Tracer, for more details see the image below:

That was the window on the Cisco packet tracer, starting from the width, menubar, toolbar, worksheet, devices (here are the tools used to simulate the network) and properties.


CISCO PACKET TRACER is an e-learning tool created by Cisco that will simulate the workings of a network based on the topology and configuration applied by the user exactly as the original.

The advantage of using a Cisco packet tracer is that we can easily understand a network topology, and it is not so difficult to operate it. This software is suitable for students who want to learn about networking.


To build a client server network, we first prepare the devices, namely: prepare 1 client and 1 server and cable. The cable that we use is a CROSS cable. Then connect the CROSS cable to the Client and Server as below:

Then enter the Ip address on the client and server, the steps to enter the Ip address, that is, click on the Client or Server> Desktop> Ip Configuration. And enter the IP address:


The next step is to test the connection by PING. The steps are as follows: click Client / Server> Desktop> Command Prompt> type ping “Destination IP address” without quotes and then press ENTER.

After the replay message appears as in the picture above, the network that we have created is successfully connected.


The devices we need to prepare to connect LAB A with LAB B are 6 Clients, 2 Switches and 1 Router and 8 straight cables. Then connect each device to form a topology build as below:

Then enter the Ip address on each Client in Lab A and in Lab B with the Ip client:


  • *
  • *
  • *

For how to enter it the same as we did before, namely click client> Desktop> Ip Configuration and enter the IP address.

After completing entering the IP address, we will set the Device Router which is still not active and cannot connect the two Labs. We try setting the fa 0/0 is and fa 0/1 is

The trick is to click 2x on the router, go to the CLI tab

The commands are like this …

Initially there were questions, we typed “no” (without quotes)
then “enable”
then “configure terminal”
Interface fa 0/0 -> because we will set theashethernet to 0/0
Ip address -> setting ip address and subnet mask …
No shutdown
Exit -> exits interface 0/0
Exit -> exit the configure terminal
Write -> save
Exit -> exit the router
Now try configuring the router interface fa 0/1, the same way as above.

But the ip address is changed to … The steps are from point B to J again …

After the router configuration is complete, the next step is to set GATEWAY for each computer. For example, I sample one for the first computer.

The entire computer is set up too, if it’s already done, try to ping again from computer 1 to computer 2 … pay attention to the following command prompt …

And the result is a replay, thus indicating that the network is successfully connected.

Creating a Simple Network with Cisco Packet Tracer

Here I will create a computer network consisting of:
* 21 computers
* 3 switches
* 1 server
Each switch is connected with 7 computers. And each computer has an IP address with the same level and group. The end view will be like this

The steps for creating a network are as follows:

  • Make 3 switches.

The switch can be found on the bottom toolbar, in the SWITCHES section. Select any type, each type represents the types of switches issued by Cisco.

  • Make 7 computers on each switch, so there are 21 computers connected with 3 switches. The computer can be found on the END DEVICE toolbar.

The arrangement of each computer does not have to be the same as the image I made, the most important thing is that each computer is connected to the correct switch. After 21 computers have been created, then connect the computers to the switch. Because the two connected devices are different, use the straight cable as the transmission medium.

When the computer is first connected with a cable to the switch, the green circle on the switch will be yellow. This indicates that the relationship is still initialized, if the transmission media used is correct then over time the indicator will change color to a green circle but if it is wrong it will be red.

  • Connect each switch with the switch in the middle, consuming the cross cable.
    Why is the media used cable cross? Because the function of cross is to connect between the same two devices. Cross cables can be found on the CONNECTIONS toolbar.

Just as explained above, wait until the indicator is green, indicating the connection between the devices is connected.

  • Make 1 server that is connected to the switch in the middle.

The server can be found on the END DEVICE toolbar. Connect the server with the switch using a straight cable. Servers here can be used as data storage (data warehousing) or central processing (all processes are carried out by the server).
The physical settings for the network have finished here. All devices are physically connected. To transmit data, a unique address is needed on each connected computer. This is done so that the data is sent according to the target and the switch can determine where the data is sent.
There are 2 types of IP Address:

· Static IP

· DHCP (IP dynamic)

For now we will configure static IP. The steps are as follows:

  • Click the computer that you want to configure its IP address, then a new window will appear.
  • Click the Desktop tab,
  • The menu will appear, select IP Configuration,
  • Fill in the IP Static section with and the gateway leave by default,
  • For the second IP computer, fill in The third computer is filled with and so on until computer 21,
  • Repeat steps 1-5 until all computers have different IP addresses.

After all computers have configured their IP Address, it is time to find out whether the network is fully formed or not, by pinging the opposite computer. In a way,

  • Click the computer that wants to ping another computer, then a new window will appear.
  • Click the Desktop tab,
  • Enter the Command Prompt menu,
  • And type the command,
    Ping The destination computer’s IP Address.
  • Ping success indicates the data communication path between the two devices that are connected and ready to use.

Display of ping / message from computers connected in the network.
The following image is taken based on PC-0 which is the transmitter and all computers other than PC-0 as receivers.

Tutorial on Configuring Cisco Packet Tracer DNS Servers

DNS (Domain Name System) is an IP Address Naming System into a Domain, for example Google’s IP Address is, but if we want to access Google, only need to enter the word / domain Google.com. to translate IP to Domain, you need a DNS server.

Also Read:

  • Cisco Packet Tracer Static Routing Configuration
  • Configuring Cisco Packet Tracer Web Server

Well, on this occasion I will share a tutorial on how to configure a DNS Server on Cisco Packet Tracer. Immediately we start, and the topology that will be used is

  • Open Cisco Packet Tracer
  • Add a Router
  • Add several PCs too
  • Add a Server that will be used as a DNS Server
  • Add the Switch too
  • Connect all devices according to topology
  • Router Configuration. Turn on the port to the DNS Server, then give IP according to Topology, give IP also towards the Switch as a Gateway for PC

Router> en
Router # conf t

Router (config) #int fa0 / 0

Router (config-if) #no sh

Router (config-if) #ip add

Router (config-if) #ex

Router (config) #int fa1 / 0

Router (config-if) #no sh

Router (config-if) #ip add

Router (config-if) #ex

  • Give IP PC0-PC4 according to Topology

  • Give IP to the DNS Server with IP Netmask and Gateway
  • Try checking the connection between the PC and the DNS Server with Ping
Ping from PC0 to DNS Server
  • Try opening the PC0 Web Browser, then Browse to the address OnTuto.com. because the DNS Server has not been configured yet, nothing should appear
  • Configure the DNS Server. Click Server0> Services> DNS> On> Domain names> IP Web Server> Add
  • Try browsing again from PC0 to the address OnTuto.com
  • When a Web display appears, the DNS Server configuration is successful. To be able to change the Web display, read also: Configuring Cisco Packet Tracer Web Server.

Cisco Packet Tracer Tutorial Connects Inter Pc

Hi, friend blogger, have you played internet cafe? how the internet cafe works is no different from the tutorial I wrote above. This Cisco packet tracer works by connecting computer 1 to another computer using intermediate switches. Here’s how to make it:

Clicked? Choose 2950-54. This is useful as an intermediary for connecting between PCs.

Click and drag to the worksheet.

  • The intermediary has been put in, now we have several PCs. here I only have 8 PCs. Select end devices. Then select the generic computer image.
  • Click and drag the generic computer to the worksheet. Put some of the computers. (up to what matters more than 2)
  • After everything is like the picture above (more or less: D), select the connection with the yellow lightning logo and select Automatically Choose Connection Type.
  • Then click on the computer and connect to Switches.
  • Connect all computers to switches until they are like this.
  • Next give ip to each pc. How to click 2x on PC1 (for example) then click the desktop tab, and select Ip Configuration.

For the IP address part, just fill in for PC1 to be PC2 to and so on until PC8.
As for the Subnet mask, fill in the default and for the default gateway and DNS server, leave it blank.
Then test Ping on each computer to make sure each PC is connected to another PC.
The method is the same, click 2x on PC1 (for example) select the desktop tab, then select the Prompt command.
Because we are on PC1, then we will ping another PC for example, I ping PC6.
Then type it is: PING

If the message that appears in CMD is Reply from bytes = 32 time = 73ms TTL = 128
So connecting between computers has succeeded …
Another way to find out between computers successfully connected or not is to click on the message on the right side and then connect it from computer 1 to another computer. If successful, the successfull text will appear in the dialog box at the bottom right.

Well, that’s how to connect between computers with Cisco packet tracer.
If you have questions, suggestions, please comment below.

Cisco Packet Tracer Tutorial: Configuring VLANs on a Switch

The abbreviation of VLAN is Virtual LAN. The concept of VLAN itself is to create networks on a network, in other words VLAN can be used to divide a network into several networks where each divided network cannot be connected to one another.
This tutorial will discuss how to create VLANs on a network that uses 2 Switches. In this network there are 2 switches and 6 PCs, where each switch is connected with 3 PCs. In 1 switch is divided into 3 VLANs, namely vlan 1, vlan 2, and vlan 3, with each vlan there is 1 PC. Here’s the picture:

In these networks, it is the PC with the same VLAN that can connect to each other and make data connections. So PC0 is only connected to PC3, PC1 is only connected to PC4, and PC2 is only connected with PC5.
Following are the steps in creating a VLAN on a network that uses 2 switches:

  • Open the Cisco Packet Tracer application

  • Insert 2 Switches
  • Connect Switch0 with Switch1 using a cross-over cable, through the FastEthernet0 / 1 Port on each switch
  • Insert 6 PCs
  • Configuring the IP of these PCs. Click PC0, move to the Desktop tab, click IP configuration, select Static, enter for the IP Address and for the Subnet Mask.
  • Repeat step 5 for PC1 to PC5. But the IP Address entered is different, while the Subnet Mask is the same. IP Address PC1, IP Address PC2, IP Address PC3, IP Address PC4, IP Address PC5

  • Connect PC0, PC1, PC2 to Switch0 using a straight-through cable. Where on the switch, for PC0 using the FastEthernet1 / 1 Port, PC1 uses the FastEthernet2 / 1 Port, and PC2 uses the Port FastEthernet3 / 1.
  • Connect PC3, PC4, PC5 to Switch1 using a straight-through cable. Where on the switch, for PC3 using the FastEthernet1 / 1 Port, PC4 uses the FastEthernet2 / 1 Port, and PC5 uses the Port FastEthernet3 / 1.
  • Configure VLAN on Switch0. Click Switch0, move to the CLI tab, enter the command below:

Switch> enable
Switch # configure terminal
Switch (config) #interface fastEthernet 0/1
Switch (config-if) #switchport mode dynamic desirable
Switch (config-if) #switchport mode trunk
Switch (config-if) #exit
Switch (config) #
Switch (config) #vlan 2
Switch (config-vlan) #exit
Switch (config) #vlan 3
Switch (config-vlan) #exit
Switch (config) #
Switch (config) #interface fastEthernet 1/1
Switch (config-if) #switchport mode access
Switch (config-if) #exit
Switch (config) #
Switch (config) #interface fastEthernet 2/1
Switch (config-if) #switchport mode access
Switch (config-if) #switchport access vlan 2
Switch (config-if) #exit
Switch (config) #
Switch (config) #interface fastEthernet 3/1
Switch (config-if) #switchport mode access
Switch (config-if) #switchport access vlan 3
Switch (config-if) #exit
Switch (config) #
Switch (config) #end
Switch #


For FastEthernet0 / 1 Port uses trunk mode because it is used as a connecting line to Switch1
For FastEthernet1 / 1 Port, FastEthernet2 / 1 Port, FastEthernet3 / 1 Port uses access mode because it is used as a connecting line to PC0, PC1, and PC2.
For the FastEthernet2 / 1 port using VLAN 2 access, the FastEthernet3 / 1 port uses VLAN 3 access, while the FastEthernet1 / 1 port does not need to configure the VLAN because it is default on VLAN 1.

  1. Configure VLAN on Switch1. Click Switch1, move to the CLI tab, enter the command below:

Switch> enable
Switch # configure terminal
Switch (config) #interface fastEthernet 0/1
Switch (config-if) #switchport mode dynamic desirable
Switch (config-if) #switchport mode trunk
Switch (config-if) #exit
Switch (config) #
Switch (config) #vlan 2
Switch (config-vlan) #exit
Switch (config) #vlan 3
Switch (config-vlan) #exit
Switch (config) #
Switch (config) #interface fastEthernet 1/1
Switch (config-if) #switchport mode access
Switch (config-if) #exit
Switch (config) #
Switch (config) #interface fastEthernet 2/1
Switch (config-if) #switchport mode access
Switch (config-if) #switchport access vlan 2
Switch (config-if) #exit
Switch (config) #
Switch (config) #interface fastEthernet 3/1
Switch (config-if) #switchport mode access
Switch (config-if) #switchport access vlan 3
Switch (config-if) #exit
Switch (config) #
Switch (config) #end
Switch #


For FastEthernet0 / 1 Port uses trunk mode because it is used as a connecting line to Switch0
For FastEthernet1 / 1 Port, FastEthernet2 / 1 Port, FastEthernet3 / 1 Port uses access mode because it is used as a connecting line to PC3, PC4, and PC5.
For the FastEthernet2 / 1 port using VLAN 3 access, the FastEthernet3 / 1 port uses VLAN 3 access, while the FastEthernet1 / 1 port does not need to configure the VLAN because it is default on VLAN 1.

  • Ping from PC0 to PC3, PC1 to PC4, PC2 to PC5. Click on the PC, move to the Desktop tab, click Command Prompt, type: ping .

PC0 can only connect to PC3, PC1 can only connect to PC4, PC2 can only connect to PC5, if other than that, repeat carefully the previous steps.

Cisco Packet Tracer Tutorial

I will explain how to simulate a star network topology with Cisco Packet Tracer
Please note that the hardware used to build this topology includes the following:

  • LAN AND RJ-45 cable
  • Switch or Hub
  • Multiple PCs / Servers.
  • Router (no need to use a router, depending on your needs).

Immediately this is the Steps:

  • Next is the work page display on Packet Tracer. Here we will draw the topology.
  • Now on the work page, place a few PCs (I use 5).

  • Then place a Hub around the 5 PCs. Contact each PC with a cable. For this type of cable, you don’t worry, there will be an option that automatically adjusts the type of cable. And the appearance is as follows:
  • If the green light is on, the device is connected to each other, but it cannot communicate with each other. Therefore what we have to do is give the IP Address for each computer. The method is as follows:

a. Double click on each computer, the following display will appear:

b. Because it’s still a simple network, just fill in the IP Address and Subnet Mask only. Select Static to manually assign IP. After that close immediately. Do this to PC machines. Just to remind each PC must have a different IP address.

c. Now the PC can communicate with each other. To check whether it is true that you can communicate with each other, double-click one PC, then move to the Desktop Tab, select Command Prompt.

d. After that, try to do communication by pinging another PC. Missal with IP Address is if I reply. Means that the PC is connected in one network and can communicate with each other.

Until here, the material that I can give to all my friends. Actually in this article not only to make a star topology, but more to understanding and how to build a network at CISCO Packet Tracer. If you already understand friends can try different types of topologies.