Slow resolving dns


#1

I have Peplink 20 binding cable 50/10 mbit/s and dsl 45/6 mbit/s. Max 25 devices. 4 active users.
When I am pinging external dns servers like google dns 8.8.8.8 or 3 dns 4.2.2.2 I get 10 ms response.
What I am experiencing is that the website resolve very slow. Sometimes to start pulling a new site take 5-10 seconds, sometimes even stalls.
What might be causing such a delay in resolving dns? When I tried caching on the router it was taking even longer. I do have health check set DNS lookup.

I did all the test at night when nothing was hogging the bandwidth. Has anyone had problems like that?

Thanks,


#2

Forgot add: 6.2.2 build 3008


#3

Hello,

It could be a routing or config error as well.

I would try first setting:

  1. MTU to auto.
  2. Route all traffic through a single WAN

We may need to take a closer look at the current configuration of the router if MTU is not the fix.

You may open a support ticket here:
https://contact.peplink.com/secure/create-support-ticket.html

Otherwise you may also reach out to the point of purchase/reseller as well.


#4

Thank you. I changed both MTU to auto and I will monitor the situation.

Which method do you guys recommend to monitor the health of the connection?


#5

Hi,

This is depend the WAN conditions.

Recommended please use DNS lookup as this is the default health check method for the WAN. Make sure you find a reliable public DNS server for the health check.

Thank You