topic Re: Broadcast does not pass WLC 2504 in Wireless

Broadcast does not pass WLC 2504

v_sapunov — Mon, 05 Jul 2021 17:53:28 GMT

Good day.

I can’t configure Sonos via WIFI network. Built on CIsco WLC 2504.

Attachment Scheme.

When setting up, you need to press the buttons on Sonos and it starts sending broadcast pacet to the network at the address 255.255.255.255. which the phone connected to the wireless network should see. The controller does not skip broadcast pacet. Enabled in the controller settings

Broadcast forwarding
Enable Global Multicast Mode

May be someone knows how to allow the passage of broadcast pacet through the controller?

Re: Broadcast does not pass WLC 2504

patoberli — Thu, 22 Aug 2019 13:49:58 GMT

Have a look here: https://bourskov.dk/2017/05/cisco-wireless-and-sonos-players/

Source: https://community.cisco.com/t5/other-wireless-mobility-subjects/unable-to-get-sonos-speakers-to-work-together-over-wlc-2504/td-p/3904545

Re: Broadcast does not pass WLC 2504

v_sapunov — Fri, 23 Aug 2019 06:49:59 GMT

Yes. I saw this. I have followed all the recommendations. I can connect to configured SONOS and play music. But I still have problems. I can not perform the initial configuration of SONOS. At the moment of pressing the button, the phone does not see SONOS

Re: Broadcast does not pass WLC 2504

v_sapunov — Fri, 23 Aug 2019 07:09:42 GMT

During installation, I press a button on SONOS and it starts sending a broadcast packet to the network. My phone connected to the same network via Wireless does not receive these packets. In the dump attachment from the port where SONOS is connected

Re: Broadcast does not pass WLC 2504

patoberli — Fri, 23 Aug 2019 07:44:47 GMT

Then I sadly don't know, never used a SONOS.

What I can recommend though, make sure you run the latest version of the major release on the WLC. So if you use 8.0.x, upgrade to the latest 8.0 version.

You did enable multicast (IGMP) on your network router?

Do you have manageable switches? If yes, is IGMP enabled?

Re: Broadcast does not pass WLC 2504

v_sapunov — Fri, 23 Aug 2019 09:27:43 GMT

I use 8.5.151.0. IGMP enable to Router.
Multicast packets pass between LAN and Wireless network. Broadcast packets dont pass between LAN and Wireless.
By default, the WLC does not pass Broadcast, but I setting on broadcast forwarding, this does not help. Packages 255.255.255.255 do not reach customers of Wireless

Re: Broadcast does not pass WLC 2504

patoberli — Fri, 23 Aug 2019 10:46:06 GMT

I though SONOS uses Multicast and not Broadcast.
Can you pair it while the SONOS is attached to the LAN and afterwards switch to wireless?

Re: Broadcast does not pass WLC 2504

patoberli — Fri, 23 Aug 2019 11:13:50 GMT

One more thing, you have Global Broadcast Forwarding enabled? "Controller > General > Broadcast Forwarding > Enabled"

Please note, this can flood your wireless clients and is generally a bad idea.

Re: Broadcast does not pass WLC 2504

v_sapunov — Fri, 23 Aug 2019 13:40:37 GMT

Yes SONOS used Multicast, but to install a new device, he requires a broadcast on 255.255.255.255. This is not very good and can only be installed from a mobile phone. I send request support sonos.
SONOS connect to lan but controller installed on a mobile phone.

Re: Broadcast does not pass WLC 2504

v_sapunov — Fri, 23 Aug 2019 13:46:34 GMT

Yes I have Global Broadcast Forwarding enabled. I do not see Broadcast packets on the wireless network from LAN.

Re: Broadcast does not pass WLC 2504

patoberli — Fri, 23 Aug 2019 14:17:47 GMT

Broadcast from WLAN to LAN should work, the problem is from LAN to WLAN, which is blocked by default (for good reasons).

That's why I think it should work if the SONOS is connected to the LAN for the initial setup.

Re: Broadcast does not pass WLC 2504

Reginald Pugh — Sat, 24 Aug 2019 19:06:46 GMT

Controller -> mDNS -> General -> Global snooping checked.
Controller -> General -> Broadcast Forwarding enabled.
Controller -> General -> AP multicast mode set to multicast with the ip 239.255.255.250.

Re: Broadcast does not pass WLC 2504

v_sapunov — Mon, 26 Aug 2019 06:32:27 GMT

Yes, I made all these settings.

I have attached a screenshot.

Sonos send broadcast packets. Wireless network dont have it broadcast packet.

Re: Broadcast does not pass WLC 2504

patoberli — Mon, 26 Aug 2019 06:49:09 GMT

Try to use a different Multicast IP address for the WLC, that address 239.255.255.250 is reserved for SSDP. You don't want your WLC using that address.
Also, is your Switch IGMP capable?
Otherwise I'm out of ideas.

Re: Broadcast does not pass WLC 2504

v_sapunov — Mon, 26 Aug 2019 06:57:44 GMT

Thanks for the help.
I tried using a different multicast address, this did not help.
I am using the cisco switch. IGMP snooping is enabled by default on them.

Re: Broadcast does not pass WLC 2504

patoberli — Mon, 26 Aug 2019 07:35:59 GMT

Next thing I would do, is to configure a SPAN port on the Cisco to mirror the packets of the Sonos and check if it gets the broadcasts and replies to them. Who knows, maybe the Sonos has some defect?

Re: Broadcast does not pass WLC 2504

Reginald Pugh — Mon, 26 Aug 2019 10:43:43 GMT

Try an earlier code version on the WLC like 8.3.122.0, see if it changes anything. Think I 've seen issue with 8.5 on certain "multicast" and broadcast traffic flows.

Re: Broadcast does not pass WLC 2504

3d3d4ul3r — Tue, 27 Aug 2019 14:52:41 GMT

Hello,

fun with Sonos, every day when you have change anything....

I try it 2 years a go or longer....

Just in the moment, i have the problem that the 3 speaker on ap1 play togher and the two speaker at ap2. but all together, no!

but.... befor i schutdown the ssid for one hour, its run without problems.

To install the Sonos, take a pc oder mac with lan connection and connect the sonos speaker with the lan (same vlan with internet connection).

It its run, you can bring up the speaker in the wireless lan.

Norbert

Re: Broadcast does not pass WLC 2504

v_sapunov — Wed, 28 Aug 2019 13:46:39 GMT

Thank you all for your help.

The problem is resolved.
The decision was trivial. The management interface of the WLC controller did not have L3 connectivity with the interface Dynamic AP Management to which the points were connected.

It seems that all broadcasts are redirected through it.

Re: Broadcast does not pass WLC 2504

whatuusay1 — Wed, 17 Mar 2021 03:43:16 GMT

Interesting.. I look at our WLC and the Management interface is the dynamic AP interface... same issue though (unable to join Arc/Playbar with sub). I do have a 'service interface' is this what you are talking about?