topic Glad to hear you got it in Wireless

2504 Wireless Controller mDNS "ERROR : Maximum SP entries allowed = 0"

maarten111 — Mon, 05 Jul 2021 11:11:18 GMT

I can't get mDNS to work with my brand new Cisco 2504 Wireless Controller. I tried firmware 8.1.102.0 and 8.1.122.0 but both give the same error (after enabling debugging) when an mDNS enabled device (Apple TV, printer, scanner, ...) announces itself:

*Bonjour_Msg_Task: Nov 05 16:58:56.647: bgFindBonjSrvProviderName : 1431 SRV = Airplay exists in SERVICES-DB with no SERVICE-PROVIDERS !!
*Bonjour_Msg_Task: Nov 05 16:58:56.647: bgInsertBonjSrvProviderString : 1663 SRV = Airplay SP = Vergader._airplay._tcp.local. ORIGIN = SRV_PROVIDER_DB TTL = 4500 .
*Bonjour_Msg_Task: Nov 05 16:58:56.647: bgInsertBonjSrvProviderString :1684 ERROR : Maximum SP entries allowed = 0 !!
*Bonjour_Msg_Task: Nov 05 16:58:56.647: ERROR : Cannot INSERT srv = Airplay sp = Vergader._airplay._tcp.local. !!
*Bonjour_Msg_Task: Nov 05 16:58:56.647: bgInsertBonjSrvProviderString() FAILED for NON-PRIORITY srv = Airplay sp = Vergader._airplay._tcp.local. !
*Bonjour_Msg_Task: Nov 05 16:58:56.647: Inserting SP: Vergader._airplay._tcp.local. failed !!

Adding a "Priority MAC" using the GUI results in a similar popup message: "Maximum priority MAC addresses per service reached"

I can't find where this maximum of 0 is defined.

I tried the following:

- firmware upgrade to 8.1.122.0

- disabling all mDNS related settings and enabling them again

- removing and re-adding the entire _airplay._tcp.local. service

But nothing helps. Next step is downgrading to 8.0 firmware but I would rather keep it running the latest firmware.

It looks like it may be

Aaron O'Hare — Thu, 05 Nov 2015 17:16:50 GMT

It looks like it may be related to this known bug (effects 8.1 releases)

CSCus71140

https://tools.cisco.com/bugsearch/bug/CSCus71140

-AO

I found that one as well, but

maarten111 — Thu, 05 Nov 2015 17:38:46 GMT

I found that one as well, but it is marked fixed, and it relates to wired connections, where I'm in a fully wireless environment.

Agreed it is but they dont

Aaron O'Hare — Thu, 05 Nov 2015 17:40:43 GMT

Agreed it is but they dont list a fix or a new code version.

The symptoms appear the same as well, I'm looking to see if I can replicate.

-AO

Roll back to 8.0.115 and wait

zdesignstudio — Thu, 05 Nov 2015 18:33:23 GMT

Roll back to 8.0.115 and wait for Cisco to release a new version which will fix the issue. It will probably be in the next release as the impact is marked at Severe.

Downgrading to 8.0.121 made

maarten111 — Mon, 09 Nov 2015 13:14:59 GMT

Downgrading to 8.0.121 made it work. The release notes actually state that 8.1.x does not support Bonjour:

http://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/crn81.html#pgfId-1282964

(via: https://supportforums.cisco.com/discussion/12561976/wlc-2504-bonjour-airprint-diffrent-subnet)

Which is strange given that all configuration options are still there in 8.1.x

Glad to hear you got it

zdesignstudio — Mon, 09 Nov 2015 13:18:06 GMT

Glad to hear you got it working. Now we patiently wait for Cisco to release a fix for 8.1.