Saturday, 14 February 2009

RHS ADSL Router

If the internet isn't working then you can either check the lights on the router or point your Internet Browser at 192.168.0.253.
When everything is OK with the ADSL the page should look like this:
This is an example of how it looks when it isn't working:


Note how the PPPoE is no longer green and without an IP address.

Thursday, 12 February 2009

RHS IP addresses

At Rehoboth High School the IP network is 192.168.0.xxx using a subnet mask of 255.255.255.0.

192.168.0.1 is the fixed address for Labserver, the domain controller and DNS server.

192.168.0.100 - 192.168.0.250 are used for DHCP addresses
192.168.0.210 - 192.168.0.220 are reserved for LAB1 -LAB20

192.168.0.252 is the fixed address for the Wireless access point in the staff room
192.168.0.253 is the fixed address for the ADSL router
192.168.0.254 is the fixed address for the Wireless access point in the computer room

Basic Troubleshooting

So the client PC isn't working - what next?
  1. Is the power on? Don't forget that there might be a powerswitch on the PSU at the rear of the PC.

  2. Is the network cable plugged in? Is there a green light next to the network plug showing that the link is up?
  3. Do you have a valid IP address? Press the Windows key and R to get a Run box, type in cmd and click OK. In the command window type ipconfig. Check that the IP address is valid for your network. (See RHS IP addresses)

  4. Check that the gateway is available with the ping command - in the example above you would type ping 192.168.0.253

  5. Check that the Internet is up - I would normally use either ping or tracert to see if a server like http://www.google.com/ is available.