Re: checking my router


Duane Arnold wrote:
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.

Okay.


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

I see.


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.

Great.


This is an example of the DHCP server usage on any router, but I am
using the one for a Linksys router.

I just called my sister and asked her about the manual or whatever
stuff that came with the wireless router she got her ISP set it up for
her. She said "I have a folder; you can look in it."

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

Thanks.


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?

I will re-read your post again and the link you gave on how to setup a
computer's NIC or any device to use a static IP on the router ... soon
once I take care of other things I have been ignoring. I may have some
question. Thansk for the help.




Duane :)

.

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