Is there a way to monitor DNS resolution time from a Cisco device?

[Terence Lockette]

Hello,

Not sure if I have the right community but I'm looking for a way to monitor DNS resolution time from a Cisco device (switch, router, firewall, etc.)?  We have reports of long DNS resolution times between our internal clients when using outlook for O365.  Emails are coming back as if it's possible fraud although mxtoolbox shows that we have SPF records configured.  I'm just looking for a way to where I can check our side and show nothing is slowing down DNS resolution.

Thanks,

Terence

[Chris McGarrah]

You could use IPSLA to check DNS:

http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipsla/configuration/15-mt/sla-15-mt-book/sla_dns.html

[Terence Lockette]

Thanks, Chris!

I'll give this a shot and see if it's sufficient for what we need it for.  If so, I'll mark your response as correct.

Terence