ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

Configuring an Ethernet Interface : How to Configure an Ethernet Interface of a CISCO Router

Updated on May 21, 2009

The Ethernet interface of a CISCO router can be configured from the console or through a virtual terminal line. The configuration of a CISCO router is very simple and easy. At first, you have to select the interface and then the IP address. Remember, each Ethernet interface must have an IP address and a subnet mask. This page contains all the information to configure the ethernet interface of a CISCO router.

Steps to configure the Ethernet interface of a CISCO router:

The steps to configure a CISCO Ethernet interface is described below:

Step 1:

At first, enter the global configuration mode and then enter the interface mode.  For example, to enter interface mode, you have to type interface fastEthernet0/0 command. Here, 0/0 means the port no or port slot. Put the Ethernet interface port/port slot according to the desired port you want to configure.

Step 2:

Now, configure the IP address and the subnet mask. Please, careful to use the correct subnet address.

Step 3:

At last, turn on the interface.

Pracitcal Example of a CISCO Router's Ethernet Interface Configuration

Let we have a CISCO router and there is a port fastEthernet0/0 which we want to configure. The IP address of that port will be and subnet mask will be The interface must be turned on.

Router Configuration Command

Router#configure terminal 
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#interface fastEthernet0/0
Router(config-if)#ip address
Router(config-if)#no shutdown 

%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up

Discussion of the above command

Before configuring the router, we access the global configuration mode. After accessing global configuration mode, we select the interface which we want to configure by the command interface fastEthernet0/0 and then set the IP address by the command ip address At last use the command no shutdown command to up the router.

Test yourself

You have given a CISCO router. You have to configure base on the following specifications:

  • Configure fastEthernet4/0 port
  • Assign IP address ( )

Answer / Solution: Click the following link

Cisco Router Configuration Example

© Written by rancidTaste

If you are enjoyed this post, please consider to give a thumbs up and leave a comment. You may Subscribe to rancidTaste's RSS feed to get new pages which will be delivered to your feed reader. You can also read more hubs by rancidTaste.


    0 of 8192 characters used
    Post Comment
    • profile image


      7 years ago

      this is the good way to understand and solve someone's problem thnx alot for whome who upload this discription

      thnx agaig and i hope to share more ur valuable knowldge like that..

    • haidry profile image


      8 years ago

      Simple and clear introduction, and the way you wrote it really make simple for newbies.


    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at:

    Show Details
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the or domains, for performance and efficiency reasons. (Privacy Policy)
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)