M
ULTICAST

F

ILTERING

C

OMMANDS

-95

Multicast Filtering Commands
This switch uses IGMP (Internet Group Management Prot ocol) to query
for any attached hosts that want to receive a specific multicast service. It
identifies the ports containing hosts requesting a service and sends data
out to those ports only. It then propagates the service request up to any
neighboring multicast switch/router to ensure that it will continue to
receive the multicast service.
Note that IGMP query can be enabled globally at Layer 2, or enabled for
specific VLAN interfaces at Layer 3. (Layer 2 query is disabled if Layer 3
query is enabled.)
Command Groups Function Page
IGMP Snooping Configures multicast groups via IGMP snooping or static
assignment, sets the IGMP version, displays current
snooping and query settings, and displays the multicast
service and group members
3-96
IGMP Query (Layer 2) Configures IGMP query parameters for multicast filtering
at Layer 2
3-100
Static Multicast
Routing
Configures static multicast router ports 3-105
IGMP (Layer 3) Configures the IGMP protocol used with multicast
routing
3-107