Licensing Requirements and Limitations for mDNS Gateways

Other network elements are not required.

mDNS gateway is a basic feature of a switch and is not under license control.

Only the following switch models support mDNS Gateway:

S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730-H, S6730S-H, S6730-S, and S6730S-S

For details about software mappings, visit Hardware Query Tool and search for the desired product model.

A switch cannot function as both mDNS relay and gateway at the same time. A protection failure will occur if the mdns relay enable and mdns gateway enable commands are both configured on the same switch.
To prevent high CPU usage, it is recommended that you configure the following when deploying mDNS gateway services: the mDNS group function (using the mdns group group-name, user-vlan vlan-id &<1-32>, and service-vlan vlan-id &<1-32> commands) and the service types that can be recorded by the mDNS gateway (using the mdns permit service-type service-type id id command).
If high CPU usage occurs in the MDGW (mDNS gateway) module after the mDNS gateway service is deployed, configure the mDNS group function and the service types that can be recorded by the mDNS gateway to reduce CPU usage. (To check CPU usage, run the display cpu-usage command.)