DHCP giving internal DNS and ExtremeIQ having DNS Enabled

[systemscsn]

We have a DHCP server, that hands out IP addresses (to over 2500 devices), and part of that, is handing out two IP addresses, for two internal servers that are DNS servers.

I noted that within the management interface of ExtremeIQ, DNS was enabled, and had two external DNS IP addresses.

Im going to turn tDNS off within the management interface of ExtremeIQ,  but was wondering the consequences of having that Enabled in the first place, when we have two servers doing DNS, and DHCP is giving those server IP’s out as part of the DHCP process.  Having it do the DNS for clients, and having two internal DNS servers, that cant be ideal, and was wondering if that is causing issues (we have a few going on, but we can skip that for now).  Thank You, J.

[systemscsn]

Thank you.  I didn't think there would be a conflict, i was just confused about it, as I honestly don't even recall that being enabled, or having IP’s assigned within the interface.  I don't know if its configured right out of the box with that.  But i much rather rely on my DHCP and DNS servers doing the job, than the AP’s.

So I will be disabling DNS on the management interface, and pushing up the Delta change.

thanks again, Jason.

[Ash_Finch · Accepted solution]

Hello,

The DNS servers configured in advanced settings of Cloud IQ are only applied to the APs and switches only, therefore does not conflict with the DNS given out by the DHCP server to clients. If the DNS is configured in Cloud IQ then APs use those DNS servers, if turned off then they’ll use the ones given out by DHCP.