BruceWA wrote:
... can I set the Lan address of my Vigor2927 to 192.168.0.1 once I have connected to the Hub 3.
Yes.
When you put the Hub 3 into 'Modem Mode', the 192.168.0.1 address will disappear (because the Router section is disabled) and the Hub 3 will only be accessible via 192.168.100.1 (That's a DOCSIS standard/requirement I believe) - so there won't be a clash. You should still be able to access the Hub 3 on 192.168.100.1 (for management purposes), because it intercepts traffic which the Vigor will be sending to the VM Default Gateway (obviously only for that one address).
And secondly do I leave the DNS settings for the Fixed I devices on the system as-is...
If you don't specify any DNS addresses, the Vigor will
probably get them via DHCP (and set them to the values you've given). I think that (by default) the Vigor will give its
own address as DNS server, to
its LAN Clients (though it seems to act as a transparent DNS cache, whether you want it to, or not).
You might want to look at using alternative DNS servers (such as
OpenDNS
or
Quad9
), for a bit of extra security. Last but not least, you could have a look at
https://www.grc.com/dns/benchmark.htm
and see how they all compare, performance-wise.
