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I have a problem with three client computers connected both on the network and the internet. First of all the three cannot connect to the server computer in the lab which runs windows xp professional for internet however the server properly connects to the internet.
Secondly of the three the two have limited or no connectivity.
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Your question cannot be answered with the information you have provided. Additionally, answerers will, at least, need to know how your server connects to the internet and how the three client computers connect to the server.
As a partial answer, “limited or no connectivity” means that the client computers are trying to obtain an IP address from the network using Dynamic Host Configuration Protocol (DHCP) and that no one is answering their request. Typically, DHCP is provided by a router or a server. The most common arrangement for a home or small office is that all computers connect to the router and the router is the DHCP server. However, if the server is “dual-homed”, that is connected to the router on one network interface and connected to the LAN on another, then the server should be configured as the DHCP server.
It is interesting that one of the three clients does not report “limited or no connectivity”. What’s different about this client? It is possible that all three clients are configured with the same IP and you are seeing an address conflict.
Can you verify physical connectivity? If the clients are connected to a switch or router, are the corresponding LEDs on the switch or router lit?
Can you do this? Assuming you are using Windows, on each of the four computers, do Start=>Run.
In the box, type “cmd” then click “ok”. A “terminal” window will open. In this window, type “ipconfig /all” (without the quotes), then press “Enter”. You should see something like this (I’ve edited some data to hide my userid and company):
============================================
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:Documents and Settings myUserIdWasHere >ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : myHostNameWasHere
Primary Dns Suffix . . . . . . . : lan.myCompany.com
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : lan.myCompany.com
myCompany.com
myCompany.com
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . : myCompany.com
Description . . . . . . . . . . . : Broadcom NetXtreme 57xx Gigabit Cont
roller
Physical Address. . . . . . . . . : 00-11-43-24-36-85
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 172.20.5.68
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 172.20.5.1
DHCP Server . . . . . . . . . . . : 172.20.1.31
DNS Servers . . . . . . . . . . . : 172.20.1.21
172.20.1.20
Primary WINS Server . . . . . . . : 172.20.1.32
Secondary WINS Server . . . . . . : 172.20.1.31
Lease Obtained. . . . . . . . . . : Wednesday, September 05, 2007 4:01:56 PM
Lease Expires . . . . . . . . . . : Monday, September 10, 2007 4:01:56 PM
C:Documents and SettingsmyUserIdWasHere>
=================================
Of particular interest are these lines:
Physical Address. . . . . . . . . : 00-11-43-24-36-85
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 172.20.5.68
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 172.20.5.1
DHCP Server . . . . . . . . . . . : 172.20.1.31
DNS Servers . . . . . . . . . . . : 172.20.1.21
172.20.1.20
Primary WINS Server . . . . . . . : 172.20.1.32
Secondary WINS Server . . . . . . : 172.20.1.31
If you right click in the terminal window and then “select all”, then ctrl-c, you can paste the contents of the terminal window into notepad or a word document. Save all four of these and update your post with the results. Then provide the details on how your computers are connected and someone should be able to help you.
If any of your computers are Linux or Unix, instead of “ipconfig /all” use “ifconfig eth0:” (use “ifconfig eth1:”, etc. if there is more than one network adapter). Save and post your results as for Windows.
Sorry if you are using OSX. I don’t know the corresponding command for Apple. The unix command may work since the current Mac operating system is Unix underneath.
Cheers!
Great article thx a lot!