Controller Based WLANs

Apple TV names are changing in "show airgroup servers" output on random basis

Aruba Employee
Q:

Randomly Apple TV names are changing in "show airgroup servers".



A:

Example:
========

(Controller) #  show airgroup servers


AirGroup Servers
----------------
MAC                IP              Type  Host Name       Service   VLAN  Wired/Wireless  Role          Group  Username  AP-Name
---                --              ----  ---------       -------   ----  --------------  ----          -----  --------  -------
1c:1a:c0:91:34:9b  10.240.160.29   mDNS  MIT200-2        airplay   29    wired           yrdsb-w-role                   0/0/2
9c:20:7b:c5:3f:89  10.240.160.32   mDNS  Confern-Room-1  airplay   29    wired           yrdsb-w-role                   0/0/2   
14:99:e2:0e:b9:15  10.240.160.33   mDNS  Confern-room-2  airplay   29    wired           yrdsb-w-role                   0/0/2   


(Controller) #  show airgroup servers


AirGroup Servers
----------------
MAC                IP              Type  Host Name       Service   VLAN  Wired/Wireless  Role          Group  Username  AP-Name
---                --              ----  ---------       -------   ----  --------------  ----          -----  --------  -------
1c:1a:c0:91:34:9b  10.240.160.29   mDNS  MIT200-2        airplay   29    wired           yrdsb-w-role                   0/0/2
9c:20:7b:c5:3f:89  10.240.160.32   mDNS  ios200-2        airplay   29    wired           yrdsb-w-role                   0/0/2    <<<<<<<--------  changing the name
14:99:e2:0e:b9:15  10.240.160.33   mDNS  Confern-room-2  airplay   29    wired           yrdsb-w-role                   0/0/2   


(Controller) #  show airgroup servers


AirGroup Servers
----------------
MAC                IP              Type  Host Name       Service   VLAN  Wired/Wireless  Role          Group  Username  AP-Name
---                --              ----  ---------       -------   ----  --------------  ----          -----  --------  -------
1c:1a:c0:91:34:9b  10.240.160.29   mDNS  MIT200-2        airplay   29    wired           yrdsb-w-role                   0/0/2
9c:20:7b:c5:3f:89  10.240.160.32   mDNS  ios200-2        airplay   29    wired           yrdsb-w-role                   0/0/2   
14:99:e2:0e:b9:15  10.240.160.33   mDNS  Confern-room-6  airplay   29    wired           yrdsb-w-role                   0/0/2    <<<<<<<--------  changing the name

 

This issue is found in the following scenarios:

 

1. When apple TVs are in the same vlan. 

In the above example, as the both 10.240.160.33 and 10.240.160.32 are wired and they are in same VLAN, their multicast packets reach each other even though AirGroup is there. 
So they are acting as sleep proxy server for each other. However, It should not cause any issue for mirroring application. When user selects a ATV(Confern-room-6/ios200-2) from his iPad for mirroring, it should be getting displayed on the ATV which ever he has chosen.  


2. When the option sleep proxy is enabled.

AirGroup Service Information
----------------------------
Service        Status
-------        ------
airplay        Enabled
airprint       Enabled
itunes         Disabled
remotemgmt     Disabled
sharing        Disabled
chat           Disabled
googlecast     Disabled
DIAL           Enabled
DLNA Media     Disabled
DLNA Print     Disabled
allowall       Disabled
SonosServices  Disabled
sleep proxy    Enabled


In this case, one apple tv is acting as sleep proxy for other apple tv and causing this problem. 

Version history
Revision #:
2 of 2
Last update:
‎08-03-2015 12:48 PM
Updated by:
 
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