rajivw's profile

15 Messages

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274 Points

Mon, Sep 20, 2021 4:05 PM

SmartZone 100 (SZ104) - Discovering Multiple APs

Planning to deploy 100+ APs in to a SZ cluster (2x SZ104). What's the best way to enable AP discovery by the WLC?

WLC IP is in 172.x.x.x/24 range (MGT). Do the APs have to be in the same range as the WLC to be discovered? If so, how can we enable 172.x.x.x range in all the APs? (Is the only option to use DHCP Option 43?)

All the APs are connected to the Switches and are under VLAN 100 (Untagged - 192.x.x.x DATA range). Will this be an issue for the discovery process, because those are in different subnets? 

Also we're using One-port Group Mode (Control+Data traffic). We don't mind using the 192.x.x.x range to manage the WLC as well, because there's no requirement for a separate MGT and DATA planes. 

Thanks in Advance. 

Accepted Solution

Employee

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333 Messages

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6.4K Points

1 m ago

Hi Rajiv,

APs and SmartZone do not need to be on the same IP subnet.  You will need to configure each SZ in the cluster with a NAT IP, so it can push it's configuration to the APs and they know where to contact it.

This document on our support portal may help: https://support.ruckuswireless.com/documents/1336-smartzone-network-design-with-nat

I've also found a 3rd-party guide which might help: https://wifidevan.wordpress.com/2020/07/27/configure-ruckus-smartzone-behind-nat-to-manage-remote-aps/

In order for APs to discover the SZ(s) when on a different subnet you will need to configure DHCP option 43 or use DNS controller discovery.  More info here:  https://docs.commscope.com/bundle/ap-110.0-indooruserguide/page/GUID-120D8DDA-3008-45EC-BB67-60B8E8785EEA.html

DHCP Option 43: https://support.ruckuswireless.com/articles/000008703

The key thing to remember is that the APs discover the SZ (using the methods mentioned above) - the SZ does not discover the APs.

I hope that helps,
Darrel.

15 Messages

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274 Points

Hi @darrel_rhodes 

We configured DHCP Op3 but, but still unable to connect the APs to the Controller. We deployed the DHCP server in one of our ICX Switches. Debugging doesn't show any results. We FR-ed the APs also.

ip dhcp-server pool test
 excluded-address 192.168.40.1
 excluded-address 192.168.40.2
 excluded-address 192.168.40.3
 lease 1 0 0
 network 192.168.40.0 255.255.252.0
 option  3 ip 192.168.40.1
 option  43 hex 060c3139322e3136382e34302e32
 option  60 ascii "Ruckus CPE"
 deploy

15 Messages

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274 Points

1 m ago

Hi Darrel,

Thanks for your input. I will check these out and let you know. 

15 Messages

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274 Points

1 m ago

Also, I was wondering whether we can change IP of WLC to AP range (192.168.0.0), so it's easier to discover right? But will we be able to change the IP of the WLC to a different subnet later? If so how will this affect the APs?

Employee

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333 Messages

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6.4K Points

@rajivw

I don't think changing the IP address of your controller temporarily is a viable solution.

If the APs are not discovering your controller then it could be something else on your network.  Can the APs ping the controller IP?  Have you rebooted the controller?


If you still don't have any success then I'd recommend raising a ticket with Ruckus support.

Best,
Darrel.

15 Messages

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274 Points

Hi @darrel_rhodes

With the above config I shaded, APs are not getting DHCP leases. Since APs are on the default subnet of 192.168.0.0/24 and the WLC is on 192.168.40.0/24, we used DHCP Op43 on an ICX Switch to lease IPs to the APs. 

Official Rep

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1.2K Messages

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17K Points

@rajivw I think you have configured wrong DHCP option. From the config on ICX it is set to "option 3" which is for ZD, not for SZ.

Please set it to option 6. You can generate the hex from below web site.

https://shimi.net/services/opt43/

Regards,

Syamantak Omer

Official Rep | Staff TSE | CWNA | CCNA | RASZA | RICXI

Follow me on Linkedin

15 Messages

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274 Points

Hi @syamantak_omer I'm trying to configure Op43 but I'm unable to see the command. ICX7450, Router image, 8.0.60

I read the DHCP Op43 is supported from 8.0.30mb onwards.

https://docs.commscope.com/bundle/fastiron-08090-dhcpguide/page/GUID-F9B2D285-4EB9-46B8-A4AB-AD4FF38CA4EB.html

Also, I noticed that the prompt I get for DHCP config is different from that one that's shown on guides (Attached). What am I missing here?

(edited)

143 Messages

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2.9K Points

Dear @rajivw,

Could you please share complete switch configuration ? 

Regards,

Abilash PR 

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