Aigroup, by default is allowed on all vlans. Below command shows if the airgroup is allowed or disallowed on a particular vlan:
AirGroup classifies all mDNS devices as either AirGroup servers or AirGroup users. Devices which advertise at least one Bonjour service are classified as AirGroup Servers whereas devices which do not advertise but query for Bonjour services are classified as AirGroup Users. List of Airgroup servers that a controller can listen across vlans can be seen using the below command: #Show airgroup servers
List of Airgroup users that a controller has seen the queries coming from: #Show airgroup users List of cache entries on a airgroup controller can be seen from the below command: #Show airgroup cache entries
Excessive mDNS packets from devices can impact the performance of AirGroup. Throttling mechanism such as "credit values" has been added to rate limit the number of mDNS packets processed by the controller. Controller assigns separate credit values to query and response packets. Credit is decremented by one, when a query or response packet is processed by controller. Controller will drop any query/response packets when the corresponding credit is zero. Credit values are renewed every 15 seconds. To see the current credit value on a controller user the command "show airgroup global-credits"
On the Airgroup controller, there would be some of the mDNS queries receiving from the users, for which there are no servers offering the service. This list of queries will be displayed under blocked queries. Below is the command to look at blocked queries: #Show airgroup blocked-queries
Based on network requirement, some of the aigroup services might be disabled on controller but it might be still receiving queries from users. This count of number of queries is shown using the command "show airgroup blocked-service-id"
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