On 31/07/2020 14:37, Dave Plowman (News) wrote:
In article ,
Andy Burns wrote:
Dave Plowman wrote:

I've assigned static addresses to the things I want to talk to one
another, including the range extender, below 64. And reserved those IP
addresses in the router.

When you say "reserved" do you mean you've set an exclusion for
addresses xx.yy.zz.1 to .64 in the router's DHCP scope, or do you mean
you've associated every item's MAC address to the IP address you want it
to have? The latter is what I meant, then you don't have to give the
individual equipment static addresses, you can leave them on automatic
and the router will look up their MAC and always give them the same IP
addr.

My BT router only seems to give the option of reserving an IP address to
an item it has seen. So has its MAC address.
The devices page shows everything that has been in use. Highlighted if
active at the moment. You click on the device and a page opens which
allows you to rename it and always use (or not) the IP address given.

You've not said what model BT router you have, then people can check if
the router can do that.

It has a pretty full A-Z index. Think it is a home hub 6 - originally
supplied when FTC arrived here, so not the latest model.

But I'd say it's a red herring.

Googled lots of times. Everyone has a different answer.
None of which seems to have made any difference. Some can see another, but
not the other way. Some show another on the network, but aren't allowed
access.

"see" at what level? ping is the starting point, you might need to
enable it through firewalls, once everything can ping everything else,
move up to SMB/CIFS sharing. If you try to use file shares first it's
running before the network can walk.

You can't actually ping things with Win 10.


Yes you can if you start up a Command prompt window.....

AngryIPscanner is also a useful IP scanning tool...