Technical Guide | HelixNet IP Network Guidance Page 11
Disable
IMGP
Snooping
IGMP snooping is a tool used to make network traffic more efficient. A switch with IGMP
snooping enabled will typically only send data to nodes that have an existing
relationship with the sender. Because IGMP snooping is covered by two overlapping
standards, one from IEEE and one from IETF, implementation can vary depending on
the manufacturer.
When connecting HelixNet equipment together, IGMP snooping should be disabled.
With HelixNet, especially during discovery/linking, data needs to flow throughout the
network so all HelixNet equipment (endpoints and devices) capture data they need.
Additionally, if you experience a problem where HelixNet station names are
disappearing from linking/pairing/expansion menus, it could be caused by the snooping
feature. IGMP reportedly can also cause issues with Bonjour/mDNS and PTP.
Example: NetGear / Extreme switches have IGMP enabled by default. Ensure that
""block unregistered multicast"" is set to off. This is a scenario where IGMP snooping
blocks traffic that must be allowed for mDNS and PTP.
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