Option 43 does not work with ruckus r300 and Cisco C3750, IP is assigned to r300 but option 43 is not

[matej_gololicic]

Option 43 does not work with ruckus r300.

The following is the configuration on Cisco switch:
===================
!
ip dhcp pool alfa
network 192.168.2.0 255.255.255.0
default-router 192.168.2.1
dns-server 192.168.2.1
option 43 hex f104.c0a8.6464
!
Option 43 was configured according to this article: https://support.ruckuswireless.com/an...

If I issue "show ip dhcp bindinds" command on Cisco switch I can see that the connected R300 gets its IP:

Switch#show ip dhcp binding
IP address Client-ID/ Lease expiration Type
Hardware address
192.168.2.2 01e0.107f.3673.90 Mar 02 1993 12:35 AM Automatic
192.168.2.3 0100.21cc.d04d.4f Mar 02 1993 12:35 AM Automatic
Switch#

01e0.107f.3673.90 is R300 MAC address.

I am connected to the same subnet with my PC.
I connect to R300 via SSH session and check DHCP options:
Here's the output. As you can see DHCP option 43 is not set on R300.

OK
rkscli: get director
------ ZoneDirector Info ------
Primary Controller : n/a
Secondary Controller : n/a
DHCP Opt43 Code : 3
AP is in Stand-alone mode.
OK

What do you think is the issue here? I cannot deploy APs if this setting is not working.
Thank you for reply!

[eizens_putnins]

I can confirm that VDA option definitely works with ZF7343, Zf7363, ZF7372, ZF7352, ZF7762, ZF7782, R300, R500, R600, R700 and with different DHCP servers (Microsoft, Linux, Mikrotik router, Cisco switch). Tested both with SCG and ZoneDirector (options are different for them).
Configuration is very different for different DHCP servers and documentationfor VDA configuration  is sparse. If it doesn't work -- check communication with server using wireshark to see what is really sent.
Hope it helps...

[martin_martin]

To start with,
Please let us know which version of code is in the R300.
Then I will setup my R300 with the same code and my 3750 to test.

Regards
Martin

[eizens_putnins]

Hello,

R300 we have  installed  with SCG 3.0.3.0.455,  it is bundled with current SCG 3.0 version 3.0.3.0.628.  

So R300 firmware is fine, and if it doesn't work  with a switch, it is not AP, but switch DHCP configuration.

I have to say that documentation about DHCP option configuration isn't enough, both from DHCP server vendors, and from AP vendors. There is a lot of comments on different forums, but they are not full in the best case, and often misleading, so youneed to make your own research every time when new DHCP server is used.

Hope it helps,

Eizens

[martin_martin]

Eizens,

Thank you for the tips regarding DHCP servers.
I will ask the knowledge team to prepare some more examples on how to configure DHCP on different platforms for Ruckus APs

On topic:
As soon as we get the information from Matej, we will look how to resolve it.

[michael_brado]

Hello Community,

DHCP option 43 for APs to connect to ZD uses option code 03.

DHCP option 43 for APs to connect to SCG/vSCG uses option code 06.

Good example of SCG/vSCG info in KBA-3197: Configuring DHCP option 43 for SCG/vSCG on MS Server

https://support.ruckuswireless.com/answers/000003197

Good example (and explanation of different DHCP sub-code 03 or 06) for DHCP to ZD APs in
KBA-2022: Configure DHCP on Cisco or Juniper switch/router to direct APs to a ZoneDirector

https://support.ruckuswireless.com/answers/000002022