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The OS is Ubuntu 2.6.24-19-386. I was wondering why every single time I boot up the machine then I need to do as below in order to get wireless internet connection.<br />
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$sudo ifdown eth1<br />
$sudo ifup eth1<br />
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Here is the thing! The interface of eth1 is already up after I boot up the machine. Why do I need to bring it down and bring it up again to get the ip address? Maybe I should use another command to obtain the ip that I don't know. Besides, windows XP does not have this kind of problem. As long as the machine is up, the wireless connection is connected and ready to use. I don't need to do ipconfig release/all and renew blah blah blah to obtain ip address. Please let me know what is the proper way to deal with my situation. I am new to Linux. Thanks! 
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The OS is Ubuntu 2.6.24-19-386. I was wondering why every single time I boot up the machine then I need to do as below in order to get wireless internet connection.

$sudo ifdown eth1
$sudo ifup eth1

Here is the thing! The interface of eth1 is already up after I boot up the machine. Why do I need to bring it down and bring it up again to get the ip address? Maybe I should use another command to obtain the ip that I don't know. Besides, windows XP does not have this kind of problem. As long as the machine is up, the wireless connection is connected and ready to use. I don't need to do ipconfig release/all and renew blah blah blah to obtain ip address. Please let me know what is the proper way to deal with my situation. I am new to Linux. Thanks! 

Ubuntu sudo Ifup eth1 problem

A Linux distribution is an operating system made as a software collection based on the Linux kernel and, often, on a package management system and are available for a variety of systems. A typical Linux distribution comprises a Linux kernel, GNU tools and libraries, additional software, documentation, a window system (the most common being the X Window System), a window manager, and a desktop environment. Most Linux systems are open-source software made available both as compiled binaries and in source code form, allowing modifications to the original software. Over three hundred distributions are in active development, including commercially backed distributions (such as Fedora, openSUSE and Ubuntu) and community-driven distributions (such as Debian, Slackware, Gentoo and Arch Linux).

Linux Distributions

Wireless networking is a method by which homes, telecommunications networks and enterprise (business) installations avoid the costly process of introducing cables into a building, or as a connection between various equipment locations. Wireless telecommunications networks are generally implemented and administered using radio communication. This implementation takes place at the physical level (layer) of the OSI model network structure. The key hardware components of a wireless computer network include adapters, routers and access points, antennas and repeaters.

Wireless Hardware

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.