Steam Packet Radio Logo  
company  | contact us  | products  | support  | solutions  | press  | mail us  | mail page

IP Network FAQ

This FAQ is designed to provide some information about verifying network connections (LAN and WAN), diagnosing Network problems, basic PC configuration and some background information on TCP/IP.

Questions:

How do I verify my Air-Frame based IP network?

I have tried a Ping command and it responds ‘Request timed out.’.

Do I have to configure my PC to work with Air-Frame?

How do I find the IP address (or Subnet Mask or Default Gateway) of my PC?

Answers:

Q. How do I verify my Air-Frame based IP network?

A. The simplest method to verify operation of an IP network is to use the ‘ping’ command. Ping simply sends a message to another computer which returns it unchanged (the data pings backward and forward across the network). Before running the ping command you will need to know one or more IP addresses at the remote network.

Note: This section assumes that you have one (or more) Microsoft Windows PCs (running Windows ’95, ’98, NT or ‘2000). All other operating systems support the ping feature. Ping may be used between dissimilar PCs e.g. one running Windows the other Linux.

  1. Load a Command Prompt window using Start->Programs->Command Prompt. (Sometimes this is under Accessories Start->Programs->Accessories->Command Prompt).

  2. In the Command Prompt window type

    ping x.x.x.x[ENTER]

    Where x.x.x.x is a valid IP address at the remote network location.

  3. If the command is successful (you have a good network connection) you will see

    Pinging x.x.x.x with 32 bytes of data

    followed by 4 replies in the form

    Reply from x.x.x.x bytes=32 time=yy TTL=zzz

    Where yy is the time in milliseconds for the ping round trip and zzz is the remaining Time to Live (TTL) hop count.

  4. If the command fails you will see 4 replies of the form

    Request timed out.

    In this case consult the FAQ question below.

Q. I have tried a Ping command and it responds ‘Request timed out.’.

A. This indicates that there is no valid communication between the local and remote networks. Verify the following:

  1. The Air-Frame Power LED is ON.

  2. The Air-Frame RSSI LED is ON.

  3. Verify that the LINK LED is ON at the Hub (or Switch) or if connected to a PC on the rear of the LAN card.

  4. Verify the remote IP address.

  5. Check the PC configuration FAQ.

  6. Obtain the IP address of the PC from which you are running the test (see find your IP address FAQ). Issue the Ping command as defined in ‘Verifying Network connections’ using the IP address of your PC. If this fails restart your PC and repeat the remote Ping.

  7. Obtain the IP address of another PC on the local network. Use the Ping command to reach this PC. If this fails you most likely have a local network problem.

  8. Have the remote PC try and ping your PC. If this works you have a routing problem and you should contact your network administrator or ISP.

  9. Rerun the ping command to the remote location but use the format ‘ping xxx.xxx.xxx.xxx –w 5000[ENTER]’. If this works your wireless connection is extremely poor and you should investigate the cause of this before proceeding further.

If communications still fails configure a local test with a second Air-Frame to verify correct operation of the Air-Frame. If this works you most likely have a very poor wireless connection. Otherwise you may have a faulty Air-Frame.

Q. Do I have to configure my PC to work with Air-Frame?

No. Air-Frame 10 acts as a transparent Bridge between networks. This means that your local network and the remote network are on the same subnet. Your Default Gateway (see finding your IP address FAQ) must either point to an addressable router on your local network or the remote network (addressable means within the range defined by the subnet mask).

Assume that your PC has an IP address of 192.168.0.21 and a subnet mask of 255.255.255.0 and you want to reach a remote IP address with an address of 192.168.1.21 then you must have a Default Gateway IP address in the range 192.168.0.1 to 254 to enable communication between the two PCs. Alternatively you can make both PCs directly addressable by changing the subnet mask to 255.255.252.0.

Air-Frame 100 may be configured as either a Bridge (default out-of-the-box) or as an IP router/Proxy.

For more information on configuring IP networks go here.

Q. How do I find the IP address (or subnet mask or default Gateway) of my PC?

  1. If you are using Windows ’95 or ’98 or ‘2000 open a Command Prompt window (Start->Programs->Command Prompt or Start->Programs->Accessories->Command Prompt) and type:

    winipcfg[ENTER]

    This will display your IP address, subnet mask and default gateway.

  2. If you are using Windows ‘NT open a Command Prompt window (Start->Programs->Command Prompt or Start->Programs->Accessories->Command Prompt) and type:

    ipconfig[ENTER]

    This will display your IP address, subnet mask and default gateway.


Copyright © 1994 - 2018 ZyTrax, Inc.
All rights reserved. Legal and Privacy
 
site by zytrax
web-master at steampacketradio.com
Last modified: July 11 2011.

support home
faqs
ethernet
installation
documentation
configurations
technology
calculators