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Frequent Contributor I

ZTP with DHCP to Provision a Managed Device (v. 8.4.0.x)

Hi folks,

 

I was just playing around with ZTP and Activate. Everything is working as expected.
After that I read about using the an DHCP Option to get the settings for an MD to establish the connection to the VMM.

The 8.4.x user guide is not very informative about how to configure this feature on the DHCP server.

I set up the Option 43 in the right order and I can see the values in a packet capture on the uplink at the MD but the MD gives the output: Master info not received, trying activate

 

I think there is something missing in the DHCP Server config. Maybe the option 60, but I can't find out which value the MD expects.

 

Does anyone of you guys have any expirience with this, or can tell me how it has to be configured correctly?

 

thanks in advance

 

 

Network Engineer
ACCX #931 | ACMP
New Contributor

Re: ZTP with DHCP to Provision a Managed Device (v. 8.4.0.x)

For option 60 you need the value "ArubaMC".

Then the controller will see the value of option 43.

 

But after this, I keep getting the error this error message when I enable provisioning-debug:

Received DHCP response, My IP = x.x.x.x, Master = none, Mask = 255.255.255.0, GW = x.x.x.x, DNS = x.x.x.x, Country code = none, Physical Port = 7
DNS server name x.x.x.x assigned to info structure..
Invalid key name or invalid option 43 format.
Invalid option-43 received from DHCP.
Correct the value or clear the option-43 to proceed to activate. Reseting the DHCP
Re-Starting auto provisioning
Re-Initiated DHCP, awaiting DHCP response
Frequent Contributor II

Re: ZTP with DHCP to Provision a Managed Device (v. 8.4.0.x)

I was researching this early this year and my understanding is that it does not work for controllers, MC or VMC. That may have changed in a more recent version of the OS, but I don't believe that is the case. I tried it back then and could not get it to work either.

 

I hope this helps,

David
Sr. Trainer and Author of "Understanding ArubaOS: Version 8.x" book
New Contributor

Re: ZTP with DHCP to Provision a Managed Device (v. 8.4.0.x)

Thank you for that info. I've tested it yesterday with v8.5.0.2.

I've also opened a support ticket. I will post the outcome of Aruba's feedback.

Occasional Contributor II

Re: ZTP with DHCP to Provision a Managed Device (v. 8.4.0.x)

Hello - I'm wondering if anyone had this working. Quite interested in the feature but haven't been able to seen it work. 

 

Is there still the limitation that it will only accept ZTP on the last port - i.e. G0/0/7 on a Aruba7030 ? 

Frequent Contributor II

Re: ZTP with DHCP to Provision a Managed Device (v. 8.4.0.x)

With 8.4 and above you can use any copper port except for the 2nd one which is reserved for if you need to log into the controller and configure port settings, for instance PPPOE login settings.

I hope this helps.
David
Sr. Trainer and Author of "Understanding ArubaOS: Version 8.x" book
Occasional Contributor II

Re: ZTP with DHCP to Provision a Managed Device (v. 8.4.0.x)

Thanks for the feedback.

 

Does it have to be copper - i.e if I use fiber would ZTP function ? 

Is it available to both Aruba 70xx and 72xx or limited to the 'branch' controllers which are the 70xx ?  

 

 

New Contributor

Re: ZTP with DHCP to Provision a Managed Device (v. 8.4.0.x)

I think I found the problem/solution.

In the documentation Aruba Sipport sent me, a whole different format was used for option 43 compared to the documentation found publicly.

The public documentation format for option 43 is:

masterip, country-code, master-mac1, master-mac2

For me, this format is understood as:

10.100.10.195,BE,00:50:56:41:1d:16,00:50:56:41:31:74

 

 

 

But the confidential or internal documentation states a different format:

mip=10.9.196.160, mm1=aa:aa:aa:aa:aa:aa, cc=US

or

mip = 10.9.196.160 , cc= US,   vm2= 00:0C:29:B9:20:64 , vm1= 00:0C:29:B9:20:5A, vip=10.45.34.187

So for me this looks like this:

mip=10.100.10.195,cc=BE,vm1=00:50:56:41:1d:16,vm2=00:50:56:41:31:74

And this is recognized by the remote controller :)

Highlighted
Guru Elite

Re: ZTP with DHCP to Provision a Managed Device (v. 8.4.0.x)

The documentation does not have enough detail.  We will get this fixed and I will post here when it is updated.


*Answers and views expressed by me on this forum are my own and not necessarily the position of Aruba Networks or Hewlett Packard Enterprise.*
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