Wireless Network Components - Basics of Any Wireless Network

Client Software and Adapter

Any client computer, laptop or wireless device with a compatible wireless client adapter allows connectivity with an access point. The client adapter is a radio transmitter with firmware that supports any of 802.11a/b/g signaling. That is needed before the device can associate and authenticate with the access point. Some access points have a no client mode that doesn't allow any association from clients extending network distance. Client wireless software included with the adapter must be implemented with specific Windows platforms. The client adapter will be integrated with the laptop, PCMCIA slot or desktop PCI bus slot. They will support specific wireless standards, antenna characteristics, WiFi certification, WDS, network range and security. The wireless manufacturer software must be implemented for all available features. The following is a list of some client adapter configured settings.

Access Point (AP)

Wireless Network Components - Basics of Any Wireless Network

As the name suggests an AP (access point) allows connectivity between the wireless client or wireless device and the wired network. The AP takes wireless data packets from a client and translates them to standard Ethernet data frames before transmitting across the wired network. Standard category 5 twisted pair cabling will connect the AP point Ethernet port with a catalyst switch Ethernet port. The maximum distance between access point and network switch is 100 meters standard with Ethernet design.

WLAN Controllers

Wireless designs with hundreds of root APs on an enterprise network will sometimes deploy wireless LAN controllers. The design specifies lightweight APs connecting to a network switch. The 4404 WLAN controller device acts as a hub connecting 4 network switches supporting 100 access points. Cisco wireless control system (WCS) wireless network management software is sometimes deployed with WLAN controller design for planning, configuring and optimizing the network.

Power Injector

Cisco access points have a variety of power options such as AC adapters, power over Ethernet and power injectors. The placement of APs is such that in some situations an AC power outlet isn't available. Should your Ethernet switch not support power over Ethernet, an option such as power injectors extends the distance from an AC outlet. Distances of 1.24 miles are available with a fiber optic media converter.

Power over Ethernet

Cisco access points can be deployed with power over Ethernet (PoE) should the network switch modules support that feature. The distance of 300 feet is the same with Cisco prestandard and 802.3af. The Cisco prestandard use Cat 5 cabling pins 1, 2, 3, 6 for powering devices while 802.3af uses 1, 2, 3, 6 with 10/100/1000BaseT signaling and 4, 5, 7, 8 with 10/100BaseT. Select a network switch module with the power over Ethernet standard your AP has implemented and has a power wattage rating per port for your specific devices. The network switch power supply should be upgraded to support additional power draw from multiple devices. Deploying power over Ethernet will decrease implementation costs with deployment of IPT, wireless and Gigabit. See network switch documents at Cisco web site for information on what network switching modules support PoE and wattage ratings. 802.3af defines powered device class 2 at 3.84W - 6.49W and class 3 at 6.49W - 12.95W.

Power Patch Panel

Cisco inline power patch panels can be deployed where Ethernet switches don't support power over Ethernet and power injectors aren't an option. The patch panel does no switching. It powers the devices through a Cat 5 cable that is a maximum 300 feet at a specific rated wattage per port. The patch panel connects the access point to the wired switch with a patch cable.

Wireless Network Components - Basics of Any Wireless Network
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Shaun Hummel is the author of Cisco Wireless Network Design Guide and CiscoDesignBooks.com featuring Networking Books, eBooks, Certifications, Design Tools and Articles

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How to Manually Set Up a Wireless Network Connection for Your iPhone or iPad

More often, the easiest way to get your iPhone or iPad securely connected to the wireless network is to set it up manually. In this article, I will walk you through the basics of connecting your iDevice to a wireless network; let's dig into the settings that you can use manually.

Heads up, I wrote this tutorial for those who just acquired their iPhones/iPads. I found out that there are more to iPhone than jailbreaking it. In fact, only a small percentage of iDevice owners want to have their gadgets jailbroken.

Network

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Manually Establishing a Wireless Network Connection

How to Manually Set Up a Wireless Network Connection for Your iPhone or iPad

To establish a wireless network connection manually on your iPhone or iPad, follow these steps:

Step 1:Launch 'Settings' app to begin.

Step 2:You can't miss 'Wi-Fi' for sure, tap on it to display Wi-Fi Networks screen.

You just have to make sure that the toggle switch is in 'ON' position; well, if it's 'OFF' just tap on the left part to turn it on.

Joining an OPEN Wireless Network

Whenever a network is open (i.e. broadcasting its SSID) and within range, the name of the network will appear in the 'Choose A Network' menu list in your iPhone's 'Wi-Fi Networks' screen.

Step 3:Enter the Password that you know of whenever the network uses a password for security purposes. After keying in the password, just tap on 'Join' button and you're good to go.

By doing the step above, your iPhone/iPad will try to join the wireless network within range. Whenever it succeeds in joining a network, it'll display the Wi-Fi Networks screen bearing a check mark next to the network to which the device is connected.

Joining a CLOSED Wireless Network

If the wireless connection is CLOSED (i.e. it's configure not to broadcast its SSID), the network will never appear in 'Choose A Network' list in Wi-Fi Networks window. Thus, you have to tell your iPhone or iPad to look for a specific network, therefore, you've got to tap on 'Other Network' option.

Step 4:Whenever you are in this situation, you just have to key in the network's name in the Name box and tap on the 'Security' button to reach the Security screen.

If there are several networks to choose from, you just have to tap on the network your iPhone or iPad wants to connect to; this will put a check mark next to it.

Step 5:Tap on 'Other Network' button to return to the Other Network screen which now shows the fields required for the security type you chose.

You simply have to type on the required information like your username and password, then tap on 'Join' button to join the network you selected.

Important Note: the 'Ask To Join Networks' toggle switch that you can find near the bottom of the Wi-Fi Networks window controls your iPad or iPhone whether or not to offer to connect to other wireless networks available within range. The 'Join Networks' feature is useful if you wan the iPad or iPhone to alert the user to a wireless network you may need to join.

That's it, as far as connecting to a wireless network is concerned that's how you do it. I hope this tutorial is helpful enough. Don't hesitate to leave some comments or suggestions.

Technology evolves everyday and if you do not want to be left behind, you have to be updated of what's the latest gadgets or technological innovations are out there. More often, you can get these updates from Technology News which you can get from any News Community online.

How to Manually Set Up a Wireless Network Connection for Your iPhone or iPad

Harold researches and writes about Technology News. He is also an active member of one of the News Forums on the Internet. Aside from being updated, there are so many advantages of reading fresh news or recent updates over the Internet. Therefore, it pays a lot to join in any News Community [http://nation.bigpondnews.com/] and interact with other news readers online.

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Network Administrator - Duties and Functions

Many organisations use a three tier support staff solution, with tier one (help desk) personnel handling the initial calls, tier 2 (technicians and PC support analysts) and tier three (network administrators). Most of those organisations follow a fixed staffing ratio, and being a network administrator is either the top job, or next to top job, within the technical support department.

Network administrators are responsible for making sure computer hardware and the network infrastructure itself is maintained properly for an IT organisation. They are deeply involved in the procurement of new hardware (does it meet existing standardisation requirements? Does it do the job required?) rolling out new software installs, maintaining the disk images for new computer installs (usually by having a standardised OS and application install), making sure that licenses are paid for and up to date for software that need it, maintaining the standards for server installations and applications, and monitoring the performance of the network, checking for security breaches, poor data management practices and more.

Network

Most network administrator positions require a breadth of technical knowledge and the ability to learn the ins and outs of new networking and server software packages quickly. While designing and architecting a network is usually the job of a network engineer, many organisations roll that function into a network administrator position as well; day to day and month to month "Is it up?" jobs fall on the shoulders of the network administrators.

Network Administrator - Duties and Functions

One of the chief jobs of a network administrator is connectivity; the cry "The networks down" usually means the network admin has to be hip deep in something fixing it and post haste. They are in charge of making sure connectivity works for all users in their organisation, and making sure data security is handled properly for connections to the outside internet. (For network administrators doing security aspects, this can be a full time job in and of itself.)

Trouble tickets work their way through the help desk, then through analyst level support, before hitting the network administrator level; as a result, in their day-to-day operations, they should not be dealing directly with end users as a routine function. Most of their jobs should be on scheduling and implementing routine maintenance tasks, updating disaster prevention programs, making sure that network backups are run and doing test restores to make sure that those restores are sound.

Other jobs that fall on the network administrator's tasks include fighting for the IT budget and setting standardised installs packages up so that all end user desktops are identical. While the network administrator probably isn't doing the installs on new computers, he is likely to be the one in charge of setting up what gets installed, and setting user access policies, as well as evaluating the purchase of new equipment to replace older gear that has been deployed. Similar decisions are made regarding software packages (both for end user support and server levels) and networking hardware.

Network administrators are jokingly referred to as the highest level of techie you get before you get turned into a pointy haired boss and made into management.

Network Administrator - Duties and Functions

Derek Rogers is a freelance writer who writes for a number of UK businesses. For information on Network Support, he recommends Network 24, a leading UK network support services provider.

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