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Choose one of the topics below for Cisco DNA Center Resources to help you on your journey with Cisco DNA Center

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Beginner

IP helper for ISE DHCP profiling

All of our switches are configured via LAN automation in DNA-C.

I noticed that our ISE nodes were not getting DHCP profiling info on endpoints. I checked the config on the switch and there is no ip helper-address for ISE, only for the DHCP servers.

Is it expected that DNA-C should have deployed the ip helper-address config for ISE nodes or is this a manual config that must be pushed via templates?

Everyone's tags (4)
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Cisco Employee

Re: IP helper for ISE DHCP profiling

The DHCP forwarding is a unicast forwarded packet. There is no tagging involved. Remember DHCP forwarding only worked with a clients initial broadcast DHCP request. DHCP renewals are unicast packets to the DHCP. ISE will never see those from DHCP forwarding.

Beginner

Re: IP helper for ISE DHCP profiling

I dont think you understood my question at all.
Enthusiast

Re: IP helper for ISE DHCP profiling

I don't know much about DNA Center, but I do know that device sensor compatible network devices don't require ip helper with ISE IP address. So IP helper for ISE profiling may not have been part of the automation process.

 

There are 2 options for DHCP profiling - IP helper (ISE PSN Address) and Device sensor (using the dhcp binding database). Preferred and most common is Device Sensor.

Beginner

Re: IP helper for ISE DHCP profiling

Thanks

I have device sensor. I guess that is sufficient.

 

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