I want to assign a fixed private IP address to a server so that local computers can always access it.
Currently, the DHCP address of the server is something like
Should I simply assign the server this same IP as fixed and configure the router so that it will exclude this IP from the ones available for DHCP? Or are there some ranges of IP that are traditionnally reserved for static addresses?
My beginner's question doesn't not relate to commands but to general priciples and good practices.
Practical case (Edit 1 of 2)
Thank you for the many good answers, especially the very detailed one from Liam.
I could access the router's configuration.
Routers's overview panel: ========================= Connectivity type is set to DHCP and PPoE. (...) Network panel ============= IPv4 address distribution (DHCP) -------------------------------- Enable DHCP on LAN : Off DHCP range starts at IP address : 192.168.1.33 DHCP range ends at IP address : 192.168.1.35 (...) Nota bene: There is also an IPv6 section.
When booting any computer, it obtains its IPv4 address in DHCP.
The IP and the MAC addresses that I can see with the
ipconfig all command in Windows match those in the list of connected devices that the router displays, so that I can confirm who is who.
The list of connected devices is something like
Description IP address MAC address «Unknown» 192.168.1.xx (static) 01:02:03:04:05:06 «Unknown» 192.168.1.yy (static) 07:08:09:10:11:12
Things that I don't understand:
- Although all IP adresses are all obtained in DCHP, they are displayed as by the router as if they are static addresses.
- The router's setting "Enable DHCP on LAN" is set on "Off" but the IP addresses are obtained in DHCP however.
- IP addresses attributed to the computers are outside of the very narrow
DHCP range of
On any Windows computer connected in DCHP,
ipconfig /all shows something like:
IPv4 Address ........ 192.168.1.xx(prefered) Default Gateway ........ 192.168.1.1 (= IP of the router) DHCP server ............ 192.168.1.5
I'm missing something, but what?
Practical case (Edit 2 of 2)
For details, see my answer to Michal's comment at the bottom of this message.
I must admit that the way the router display things keeps some part of mystery.
The router seems using DHCP by default, but remembers the devices that were connected to it (probably using their mac address). It could be the reason why it lists the IPs as static although they're dynamic. There was also Cisco router at
192.168.1.4 which appeared for some business communications service, but I had not the credentials to access it.