Appletalk and Bonjour services are not working when connected to Dell Networking N series switch in a VLAN with IGMP snooping enabled

Appletalk and Bonjour services are not working when connected to Dell Networking N series switch in a VLAN with IGMP snooping enabled


Issue

Apple talk and Bonjour use link-local multicast. IGMP snooping allows the switch to snoop on IGMP exchanges between hosts and multicast routers and perform multicast forwarding within a VLAN. When IGMP snooping is enabled the Appletalk and Bonjour traffic may drop in Dell N series switch.

This is because the unregistered multicast traffic is only flooded to router ports by default. The unregistered multicast traffic of Apple talk and Bonjour gets dropped in the switch when the devices to be discovered are connected to the interfaces in the same switch.

Solution

Use the below command

Command Parameters
console#configure Enter configuration mode
console(config)#ip igmp snooping unregistered floodall This command enables flooding of unregistered multicast traffic to all ports
in the VLAN.







This will allow multicast traffic from apple device to flood to other interfaces.





Article ID: SLN307962

Last Date Modified: 09/14/2019 09:27 AM


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