topic Re: Extend IP name-server on ISE Node in Network Access Control

Extend IP name-server on ISE Node

Da ICS16 — Thu, 12 Sep 2024 04:19:37 GMT

Dear Cisco community,

I use ISE lab version 3.x with 2 IP-name server ( 1st and 2nd DNS, DNS configured on ISE CLI ).

Is it possible to add new IP-NAME SERVER for backup in case 1st or 2nd DNS not working properly.

Kindly commend and advise.

Thanks,

Re: Extend IP name-server on ISE Node

JPavonM — Thu, 12 Sep 2024 05:21:05 GMT

Yes this is possible, just enter ISE nodes' CLI, use "show running-config" to check the current ones, and complete the line with additional DNS servers: (same for NTP servers)

ip name-server 10.1.2.3 10.11.4.5 10.21.6.7

Re: Extend IP name-server on ISE Node

Da ICS16 — Thu, 12 Sep 2024 07:50:52 GMT

Do you mean like this?

ip name-server 10.1.2.3 10.11.4.5 10.21.6.7 10.x.x.x (newIP)

Thanks,

Re: Extend IP name-server on ISE Node

JPavonM — Thu, 12 Sep 2024 08:58:42 GMT

that's correct

Re: Extend IP name-server on ISE Node

Aref Alsouqi — Thu, 12 Sep 2024 15:55:34 GMT

I also think if memory serves that you can add the additional server on its own with the "ip name-server" command, and that will be added to the ones you had before. Essentially, if you don't go and delete the old ones, the new one will be added to the previous two and I think it will show up as the first in order.