For those with the same problem, you can use the Aruba Switch Feature Navigator, and then when you search under L3 features for DHCP relay, you will find that that feature was introduced in 10.02.0002. The point that 10.08 is end of support is a separate point, relevant for other reasons as you probably want to run supported software version.
------------------------------
Herman Robers
------------------------
If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check
https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.
In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
------------------------------
Original Message:
Sent: May 19, 2023 02:38 AM
From: ariyap
Subject: aruba cx 6000 switch ip helper-address
ok then upgrade to that version also note that 10.08 is end of support

------------------------------
If my post was useful accept solution and/or give kudos.
Any opinions expressed here are solely my own and not necessarily that of HPE or Aruba.
Original Message:
Sent: May 19, 2023 01:49 AM
From: danish.saleem@zhtek.com.pk
Subject: aruba cx 6000 switch ip helper-address
no its 10.8
Original Message:
Sent: May 18, 2023 06:37 PM
From: ariyap
Subject: aruba cx 6000 switch ip helper-address
Do you have firmware10.10.x on the 6000s?
------------------------------
If my post was useful accept solution and/or give kudos.
Any opinions expressed here are solely my own and not necessarily that of HPE or Aruba.
Original Message:
Sent: May 18, 2023 05:09 PM
From: danish.saleem@zhtek.com.pk
Subject: aruba cx 6000 switch ip helper-address
ip helper-address command did not appear in int vlan ***
6000(config)# int vlan 10
6000(config-if-vlan)# ip helper-address ***.***.4.2
Invalid input: helper-address