Re: checking my router
- From: Duane Arnold <"Do forget about it"@PleaeDo.BET>
- Date: Sat, 05 Aug 2006 19:52:14 GMT
I hate spending time on networking stuff (cus I want to study my
programming stuff) and I am having to do all this thanks to my sister
and I want to do it right. Oh, well.
Well, you don't see about the use of the DHCP IP and static IP(s). The router itself has a DHCP server. The print server computer or device that's connected to the router will have it's Network Interface Card (NIC), yeah the print server has one too, set to Obtain an IP from the Network Automatically from the DHCP Server on the network.
In your case, the DHCP server is part of the router. So any device requesting an IP from the router, the router is going to issue one to the device.
http://www.webopedia.com/TERM/D/DHCP.html
Now, if the the print server is set to use a DHCP IP on the router and computers that have been setup to print to the printer are locked in on the IP that the print server has assigned to it, what's going to happen if the IP changes that the print server was using, because the DHCP server on the router for whatever reason decided to give it a different IP?
Well, the computers locked in on the previous IP the print server had are not going to work anymore, because they knew about the other IP the print server use to have assigned to it.
The solution is to configure the print server to use a static IP on the router an IP that is not under the control of the DHCP server on the router. The print server manual will have instructions setting it up for using a static IP on the router.
This is an example of the DHCP server usage on any router, but I am using the one for a Linksys router. The router has a DHCP IP Issue Counter that's set to 50 on Linksys I think. It's a changeable setting.
The *default* start of the DHCP IP(s) for the router start at 192.168.1.100. If DHCP Issue count is 50, then 192.168.1.100-192.168.1.150 are IP(s) that can be issued to any device requesting a DHCP IP from the DHCP server on the router.
192.168.1.151-192.168.1.254 are static IP(s), because they are not under the control of the DHCP server on the router.
The Device IP for the router, that's the IP you enter into a browser's URL line to access the router admin setup is 192.168.1.1. IP(s) 192.168.1.2-192.168.1.99 are static IP(s).
Here is an example of how to setup a computer's NIC or any device to use a static IP on the router, instead of a DHCP issued by the router.
http://linksys.custhelp.com/cgi-bin/linksys.cfg/php/enduser/std_adp.php?p_faqid=534
Yes, even the router can be setup to Obtain an IP Automatically from the ISP's DHCP server or the router or it can be setup to use a static IP issued by the ISP so that the router's IP will never change.
The static IP would be for your network the router represent, because you had a WEB server running behind the router and you wanted that public facing IP to never change, as an example foe the usage of a static IP from the ISP.
The WEB server would be using a static IP on the router and not a DHCP IP on the router so the incoming WEB traffic to the WEB server would be routed to the static IP the WEB server was using on the LAN behind the router.
What would happen to the port forwarding rules on the router you setup for WEB traffic to be forwarded to the WEB server machine that was using a DHCP IP on the rules and that IP was changed by the DHCP server?
Duane :)
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