I've been trying to set up this router Vigor 2762 but tearing my hair out trying to figure out why I cannot get to the internet if I am trying to fix IP addresses in the basic LAN range.
If I use DHCP it all works OK, but I'm fed up with all my local IP addresses changing every time I turn things on with attendant problems with local devices unable to talk to each other.

So I have set some fixed IP addresses within the LAN which has always worked in the past.
But it doesn't work with the Draytek router. Those fixed address machines cannot access the internet - but they can see the router on 192.168.1.1

I'm tried googling this and that, and looking at DNS options and all that - but it's so far taken nearly a week to get my head around it - and I just don't understand what is going on.

I have set the DHCP to be 90 addresses between 192.168.1.10 and 192.168.1.99 and any device using DHCP in that range is fine - they can all get to the internet.

But I have two devices (192.168.1.124 and 192.168.1.131 ) outside that range and manual fixed with 192.168.1.1 as gateway and 255.255.255.0 mask - they see other devices in the network but cannot get out to the internet.

If I connect back our old Hyperoptic router it all works perfectly (except that the router is so unreliable that's why I bought the Draytek in the first place) but as soon as I connect the Draytek I get these issues. I'm sure it's a setup thing and my misunderstanding but there are no hints as to how you get through this problem anywhere.

I can't find a guide anywhere that sensibly explains what is wrong. Does anyone have any idea have to solve this infuriating puzzle.

Have you manually configured DNS Server addresses as well as IP addresses, on the 'fixed' machines?

If "ping news.bbc.co.uk" fails, but "ping 212.58.249.145" works, for example - then it's a DNS misconfiguration.

Assuming that's not the problem...

What happens if you use the "Tracert" command on a machine that has received its IP address via DHCP and one that you have configured manually?

This is what I get, if I trace the route to Google's DNS server (with DNS out of the equation) :-

Code:

c:\>tracert -d 8.8.8.8 Tracing route to 8.8.8.8 over a maximum of 30 hops 1 <1 ms <1 ms <1 ms 192.168.100.254 2 14 ms 14 ms 13 ms 51.148.72.21 3 14 ms 14 ms 14 ms 51.148.73.4 4 15 ms 13 ms 14 ms 72.14.217.190 5 14 ms 15 ms 14 ms 108.170.246.161 6 14 ms 13 ms 13 ms 108.170.238.123 7 13 ms 13 ms 14 ms 8.8.8.8 Trace complete.

The first IP address in the list (192.168.100.254), is my router - yours will be 192.168.1.1. The rest are the intermediate hops on the way to the target.

Also, what happens if you manually configure your client to use an address from the DHCP range. (Try and pick one that's not been allocated to something else :wink: - look in Diagnostics >> View DHCP Assigned IP Addresses for a list of what's been issued ... else just try 192.168.1.131. ).

Incidentally, you can use the "LAN >> Bind IP to MAC" function as a halfway-house between DHCP and static IP addresses. Clients still issue DHCP calls, but they are always given the same address each time. This moves the management of the fixed IP addresses into a single place and helps avoid conflicts.

Are you using the correct subnet on your locally assigned machines?

Perhaps you can paste the required parts from an 'ipconfig /all'

Thanks for the replies - I don't have a pc - everything I own is mac so I am having to interpret the commands to use in a terminal session.
Yes it seems clear that it's a DNS thing, and I'm doing my best to get my head around it.

I added 8.8.8.8 and 8.8.4.4 to the DNS config on three of our macs and that seemed for a time to have sorted things out.

But sometimes I'm losing the webserver at 192.168.1.1 as well as internet around our LAN.

I cannot decide at present whether 8.8.8.8 and 8.8.4.4 should be in the LAN 1 DNS server config on the Draytek, ot if I should use the ones that Hyperoptic quote which are 141.0.144.64 and 188.172.144.120

So essentially just at the moment 90% of the time everything is fine, but both Internet and 192.168.1.1 are dropping off at times, sometimes together and sometimes independently. I have a selection of around 8 macs, ipads and iphones - all of which fall over at the same time (and there are no IP clashes) . It seems random just now, but very frustrating nevertheless.

Half an hour ago this happened again - I finally got the internet back on, and could ping 192.168.1.1 but could not browse to it (the Vigor 2762) Power cycled router and it came good. At least for now.

BTW some devices are on wifi and some ethernet - it matters not - they are all behaving the same.

Is there a switch in your topology? 192.168.1.1 would be the default IP for many switches which would clash. I have seem that many times in the course of my employment.

"I cannot decide at present whether 8.8.8.8 and 8.8.4.4 should be in the LAN 1 DNS server config on the Draytek, ot if I should use the ones that Hyperoptic quote which are 141.0.144.64 and 188.172.144.120" - either or will be fine.

I have a 2862 connected to my Juniper SRX and its simply acting as a wireless access point. It is quite frankly, awful. I have the Juniper providing DHCP and all my wired connections stay connected, but the Draytek requires a reboot to bring the wireless connected back online.

I will keep an eye on your thread as I was not able to resolve my issues!