On 06/02/2021 19:08, Chris Green wrote:
Steve Walker wrote:
On 06/02/2021 14:45, Dave Plowman (News) wrote:
In article ,
Fredxx wrote:
On 06/02/2021 12:37, Dave Plowman (News) wrote:
The PC which is part of this pair suddenly lost internet access. It is
cabled to the router. This old machine from the same hub, OK.
It was reaching the router OK, but no internet access. It's on a fixed IP
address. As a quick fix tried letting it sort itself out. Where of course
it changed to DCHP - but still not working. Claimed it couldn't find the
DNS server. Checks on drivers etc showed OK.

Seems Windows did an update a couple of days ago. Restored to before that
and everything works again.

It's a relatively new (and expensive) Gigabyte MB.

Open a Command Prompt and type "ipconfig /all" on both PCs and compare
the DNS Servers for both on the Ethernet adapter.

If you're using DHCP they should be the same. It is always possible that
the first PC has the DNS Server entry to some historical IP address and
not set through DHCP.

I've got everything on this LAN set to fixed IP. Have a list of what they
all are.

I do it slightly differently. I have all my network on DHCP, but have
the DHCP server set to give the same IP addresses out to those MAC
addresses each time they connect.

Unless you re-use addresses that happens anyway with DHCP, I don't
think any system on my LAN has ever changed its IP and nearly all are
assigned by my DHCP server.

I like to group them - so xxx.xxx.xxx.10 to .39 is available for PCs (5
of them), laptops (2), tablets (3). .40 to .49 for printers (2). .50 to
..69 Satellite boxes (4), music players (2), smart TVs (2), other set-top
boxes (2). .80 to .89 for mobile phones and so on, with .190 to .254 for
home server ESXI host, Nethserver based Domain controller, storage
server, email server, etc. and other virtual machines.

Plus, I want to be absolutely sure that no address changes when the
network and everything attached is restarted, as satellite and set-top
boxes need to access each other and the server, while the music players
need to access the server - and a whole lot more.

We are a bit of a techie household - except for my wife who doesn't know
how any of it works. It has made online, remote learning and working
from home easy though, as there is no competition for machines to work on.

Steve Walker laid this down on his screen :
I like to group them - so xxx.xxx.xxx.10 to .39 is available for PCs (5 of
them), laptops (2), tablets (3). .40 to .49 for printers (2). .50 to .69
Satellite boxes (4), music players (2), smart TVs (2), other set-top boxes
(2). .80 to .89 for mobile phones and so on, with .190 to .254 for home
server ESXI host, Nethserver based Domain controller, storage server, email
server, etc. and other virtual machines.

Plus, I want to be absolutely sure that no address changes when the network
and everything attached is restarted, as satellite and set-top boxes need to
access each other and the server, while the music players need to access the
server - and a whole lot more.

Same here..