We help IT Professionals succeed at work.

HP MSM765 does not DHCP relay after firmware upgrade

Last Modified: 2014-06-02
We have an HP MSM765 which we recently upgraded to (to address issues with APs dropping off, which appear to have been resolved).

We then had to reconfigure our firewall as prior to the upgrade, traffic was using NAT (so all traffic was coming from the IP of the MSM).  This feature is no longer compatible with the "Extend VSC egress subnet to VSC ingress subnet" option, so traffic now comes from the client IPs.  No problem now the firewall has been reconfigured.

Before we fixed this we disabled the SSID broadcast so the network was hidden (for testing).  Once we had everything working, we enabled the broadcast (and made no other changes).  Since then, clients connected to the default VSC (for guests) do not receive IP addresses by DHCP (by relay from a Windows server).  Clients connected to the private VSC work fine.

Disabling the broadcast does not fix the problem.  If we restore the config back to how it was, this works fine again (with the SSID disabled) but as soon as we enable broadcast the problem comes back.

Looking through config backups made before and after the change, the only differences are as follows:

On the working config:

    dhcp-request-listen-lan = ENABLED
    dhcp-request-listen-tunneled-ac = ENABLED

    dhcp-relay = ENABLED

On the broken config:

    dhcp-request-listen-lan = DISABLED
    dhcp-request-listen-tunneled-ac = DISABLED

    dhcp-relay = DISABLED

Is it possible to simply change these settings in the command line, on the new firmware?  If so, how do we go about it?

Thanks in advance for any advice.
Watch Question


Not sure about command line but in the web console if you drill into the VSC profile, under "DHCP relay agent," is "Forward to egress interface" selected?
Consultant Engineer
This one is on us!
(Get your first solution completely free - no credit card required)
David HaycoxConsultant Engineer


Solved problem myself with support from HP.

Gain unlimited access to on-demand training courses with an Experts Exchange subscription.

Get Access
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Empower Your Career
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Unlock the solution to this question.
Join our community and discover your potential

Experts Exchange is the only place where you can interact directly with leading experts in the technology field. Become a member today and access the collective knowledge of thousands of technology experts.

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.


Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.