I have two ISP connections Bell-fibre, primary and Eastlink Cable secondary.
Recently (with no changes to config), the Bell Fibre connection seems to not be accessible for short periods of time like 2-5 minutes but this time was down for 10 minutes.
What do I mean by down… glad you asked.
(1) computers lose access in every case
(2) in one case lost email access although that is through the other ISP, but something in the router was blocking that too.
Here is the funny part, NOT being able to browse or check emails I was still able to receive and send on mY PC!!!
a. discord chat
b. an IPTV connection
PLUS
c. separate amazon firestick connections in the house.ick IPTV was still working in the house
*** so currently turned fiber off and running solely off the backup ISP
The router showed bound and connected with no errors in the log.
(when the IP changes on my fiber I know because the voip modem has to be manually reset and shows not able to rejoin)
I am thinking is this a DNS problem?
Thoughts??
[ I have input rules for port 53, udp/tcp in-interface-list=LAN (and all vlans are identified as being on the LAN) ]
It would be good if you had at least a simple network diagram and as a second step your config (hide-sensitive)… Isnt that what you propose to everyone ?
You want me to take a picture of whats under my skivvies …can send it privately.
I am looking at my DNS and noted I had raspberry pi as one of my entries on the DNS list at the top amongst others, but the raspberry pie was not connected (no power), so I wonder if thats buggering stuff up.
So my question on DNS is if I allow LAN lookups to the router…ports 53 input chain as indicated
and my IP DNS list looks like this
Servers1.0.0.1
1.1.1.1
8.8.8.8
Dynamic Servers Entry: is Blank
Allow remote requests: Yes
Q1. That means for all subnets that I have specifically put in a DNS entry of the gateway of that subnet, ie 192.168.1.1 , then the router will go through the Server List above from top to bottom attempting DNS resolving??
If however I have put specific DNS entries under DHCP NETWORK for a subnet, the Router will send the queries directly to that dns resolver(s) I note one can list more than one. Q2 What if the ones I put in for the subnet dont resolve, will the router then go to the SERVER list??
Q3 Is it better to put the DNS entries all through the router and use one list or individual per subnet/dhcp DNS setting??
Q4, is it better to stick to one or two DNS resolvers or it doesn’t matter.
Q1: The router will check the DNS cache and afer that in case nothing is found it will look at your DNS Servers in the Order they are listed… Does not apply the same if you have a Dynamic DNS as well configured…
Q2: Yes
Q3: I always consider best to use the Router as DNS Server…
Q4: I always use 8.8.8.8 and 8.8.4.4, sometimes i might add 1.1.1.1… So 2 are enough…
