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Webcast-Catalyst9k
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DNS request timed out. timeout was 2 seconds. *** Request to UnKnown timed-out

Hi Team, 

We have issue on Cisco ISE 1.3 patch 6. And already opened a Cisco TAC SR. But unfortunately, we can't find which is causing the issue on reloading the guest portal web page on Apple and Windows devices. Per TAC, she advised to check the DNS server. 

We tried to nslookup the fqdn of ise and this is what we got.

C:\Users\sample>nslookup <ISE FQDN>
DNS request timed out.
timeout was 2 seconds.
Server: UnKnown
Address: x.x.x.x

DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
*** Request to UnKnown timed-out

C:\Users\sample>nslookup <ISE FQDN>
DNS request timed out.
timeout was 2 seconds.
Server: UnKnown
Address: x.x.x.x

DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
*** Request to UnKnown timed-out

C:\Users\sample>nslookup <ISE FQDN>
Server:  Local DNS Server
Address: x.x.x.x

DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
Name: ISE FQDN
Address: x.x.x.x

We really don't know if this nslookup output for ISE FQDN is related to the latency on ISE Guest portal webpage.

Appreciate your help friends.

Thanks,

Mady

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