Set up dns server and after reboot it stopped working packet tracer

[hugosal]

i have a network i've created with dhcp working, set up dns for it, worked, after rebooting the computer it stopped working

https://file.io/PVBy7ojBT1Jr

any ideas on why the dns server is not working?

says destination unreachable when i ping its ip

[hugosal]

 i also cant ping the dhcp server but i get assigned ips

[Flavio Miranda]

Hello

 I need some explanation in order to help you.  I saw you created DHCP on the switches and they are working fine.

I see one DNS server on the topology with IP address 172.16.0.5 with gateway 172.16.0.1 but I dont see where is this gateway.

As per the topology your gateway should be the  Router 1 but I dont see any interface there with 172.16.0.0 network configured.

Just tell me fro where you are trying to access the DNS server