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Troubleshooting Wireless

Posted on | December 20, 2009 | No Comments

Overview

The process of solving network problems if you have wireless components is a little ‘more complex than basic cable. Actually, the answer to the basic application, either wired or wireless to determine the problem. The last provision of a wireless client, after working through the application layer of the OSI model is effective. The traffic of the wireless client sees no association with the harness until the access point. the smell is there a connection between the information in the middle of customer as a wireless access point accordingly. With whom have ratified the facts on the taxiways between the access point following the switch cable.

The client has a wired Cat 5 cable inserted in office ends in a switch wired. Associated with each customer to a point of access time are you leaving exactly one Cat 5 cable between the access point to the switch. This makes it easier to troubleshoot the wiring is a source of many network problems, but no problem with this cable affectibus all customers. It is important to reduce the number of customers access performance by one. Implementations of the commercial network average 10-24 clients per access point.

The key to solving problems is to determine what has changed. Sometimes the material is what he does or does not change, as the new software, hardware or other employees en configure insistent on the network. Could be a problem or to clarify some issues. Start with the client adapter to determine exactly the same problems in movement.

This costume is a series of questions here is pendant that can guide a process of problem solving:

1. The wireless client can connect to any access point?

2. You can ping the IP address of the switch?

3. You can ping the router?

4. It can be DHCP server on the table?

5. If the client obtains an IP address?

6. The circuit is available WAN?

7. The new software was installed on the client?

8. Meets all customer issues?

9. Random or is a model exactly?

10. Is specific server or a specific application?

11. The IP address is the location of the correct DNS server?

12. There is a firewall is the filtering of traffic here?

Tools:

a) Indicates Wireless state information of the client software, such as the access point association, DHCP, IP address, gateway crime, the address of the DNS server.

b) Windows Control Panel settings show the wireless network adapter, the configuration of the firewall, etc.

c) Table ROUTING Verify that the network works.

Network packet d) trained to examine the knowledge of packets that tells protocols, filtering software or errors with ERP applications.

e) analyzers to detect the sources of frequency interference Specter as likely.

Common wireless problems:

The settings of the wireless client

Update the card driver manufacturer client.

flow from operating system implementation packs for Windows.

Facts rate customer reviewer, power transmission, the preamble, the decision Itinerancia WPA settings.

Confirm the shared key are NOT applied are incompatible, among other clients AP.

Review the IP address. Send DHCP settings specific to each customer. Customers outside must configure the DHCP IP address, subnet mask, network paths of crime results in an IP address of the DNS server.

the name of the client SSID configuration must match what is to configure the AP.

Access Point

Check the access point with specific recommended IOS version for the star.

Increasing Examiner AP to the following Vary, if necessary, follow the installation instructions.

Remove any loopback address configured.

Configure Transmit Power Adjustment and decline occurs when the interference of the channel.

Mixed 802.11b / g environments must set each point of access with 802.11b flow of basic information.

data, configure the speed settings on two floors to match the center of the switch another AP.

Design

Set the information rate is also duplex settings to match the environment of wireless bridges.

Standard cable UTP Cat 5 should be a maximum of 328 meters in AP and switches.

The distance between the wireless client does not pay a penny to go Beyond the point shoothing range of detail.

The maximum number of clients per access point does not exceed 17 to 24.

Do not assign channel overlap in the middle of access points nearby.

Configuring Spanning Tree root on bridges

Set of non-overlapping channels 1, 6 and 11 802.11b elsewhere 802.11g AP.

Do not configure multiple major bridges on the same wireless LAN

Implement the new version of Windows Server, IAS RADIUS Server or Cisco ACS

In RF interference will be band without a license. Reduce the sources when possible.

Category: Wireless Adapter Tips
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