Router configuration newbie --- IOS Introduction

Source: Internet
Author: User

This article mainly introduces how to upgrade IOS and configure Cisco routers for beginners. I believe this article will help you.

IOS (Internet work 0 perating System, an inter-network operating System) is a special software that can be used to configure the Cisco router hardware so that it can route information from one network or bridge to another. IOS is the "power source" of Cisco vro products ". It can be said that the existence of IOS makes the Cisco router have a powerful vitality. When purchasing a Cisco router, you must also purchase a license for running IOS. 10 s has a variety of features. You must decide the form of IOS based on your actual situation.

There are multiple versions of IOS. Generally, new software, old software, or more mature software should be used according to your habits. Do you need a special IOS function or have decided to adopt a specific hardware platform.

Cisco uses a set of encoding schemes to develop IOS versions. The complete version number of I0S consists of three parts:

1) Main version.

2) Auxiliary version.

3) maintain the version.

The primary and secondary versions are separated by a decimal point. The two constitute a set of major IOS versions. The maintenance version is displayed in the ARC. For example, if an IOS version is 11.2 (10), its major version is 11.2, And the maintenance version is 10 (10th maintenance or patch ). Cisco often releases IOS updates to fix existing errors or add new features. After an update is released, the maintenance version number is usually increased progressively.

Because there are too many IOS versions, Cisco also provides release instructions to describe version changes and new content. If you want to know the changes to a version or what content is added to the new version, read the release notes carefully.

Cisco adopts a special naming scheme to let us know how reliable their software is! The names of these versions are defined as follows:

General Deployment (Standard Edition-GD), Limited DepIoyment (restricted edition-LD), and Early Deployment (earlier version-ED ).

Generally, the GD version of I0S is the most reliable. If a set of 10 s has been in the market for a long time, so that Cisco can correct enough errors, and C5sco believes that the majority of people who have used the software are satisfied, it will be given a GD name.

After the version number changes, the function or feature changes slightly. Select the desired features based on the content you want to run on the vro. For example, do you only want to run "Internet Protocol" (Intemec Protoc01, IP), or do you want to run IP, Novell's "Internetwork Packet exchange" (IIX), and DECnet at the same time? According to your own needs, you can sum up all the features you want the router to have in the network, and then select I0S based on these features.

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.