User`s manual

NPort S8000 Series Switch Featured Functions
6-35
Snooping is Enabled
Globally
Static Multicast Router Port
Setting Description Factory Default
Select/Deselect Select the option to select which ports will connect to the
multicast routers. It’s active only when IGMP Snooping is
enabled.
Disabled
NOTE
At least one switch must be designated the Querier or enable IGMP snooping and GMRP when enabling Turbo
Ring and IGMP snooping simultaneously.
Static Multicast MAC
Some devices may only support multicast packets, but not support either IGMP Snooping or GMRP. The NPort
S8000 supports adding multicast groups manually to enable multicast filtering.
Add New Static Multicast Address to the List
Setting Description Factory Default
MAC Address Input the multicast MAC address of this host. None
Join Port
Setting Description Factory Default
Select/Deselect Select the appropriate options to select the join ports for this
multicast group.
None
GMRP (GARP Multicast Registration Protocol)
The NPort S8000 supports IEEE 802.1D-1998 GMRP (GARP Multicast Registration Protocol), which differs from
IGMP (Internet Group Management Protocol). GMRP is a MAC-based multicast management protocol, whereas
IGMP is IP-based. GMRP provides a mechanism that allows bridges and end stations to register or de-register
Group membership information dynamically. GMRP functions similarly to GVRP, except that GMRP registers
multicast addresses on ports. When a port receives a GMRP-join message, it will register the multicast
address to its database if the multicast address is not registered, and all the multicast packets with that
multicast address are able to be forwarded from this port. When a port receives a GMRP-leave message, it will
de-register the multicast address from its database, and all the multicast packets with this multicast address
are not able to be forwarded from this port.