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Configuring multicast on SG300-50P switch?

I seem to recall that Best Practice on a Cisco switch acting as a dedicated VoIP endpoint switch (i.e. only serving PoE IP phones) to configure the ports to use multicast to dramatically reduce the amount of broadcast traffic on the VoIP switching backplane.


If my VoIP server is at IP 192.168.1.2, connected to port 50 (GigEthernet) on my SG300-50P switch, what should the multicast configuration look like so that the phones on the PoE edge ports use multicast when booting and getting their configuration via tftp from the VoIP server?

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