9-93
Configuring Advanced Features
Multimedia Traffic Control with IP Multicast (IGMP)
Configuring Advanced
Features
• Blocked: Causes the switch to drop all IGMP transmissions received
from a specific port and to block all outgoing IP Multicast packets for
that port. This has the effect of preventing IGMP traffic from moving
through specific ports.
• Forward: Causes the switch to forward all IGMP and IP multicast
transmissions through the port.
■ Querier: In the default state (enabled), eliminates the need for a multicast
router. In most cases, HP recommends that you leave this parameter in
the default “enabled” state even if you have a multicast router performing
the querier function in your multicast group. For more information, see
“How IGMP Operates” on page 9-97.
Note Whenever IGMP is enabled, the switch generates an Event Log message
indicating whether querier functionality is enabled.
For more information, refer to “How IGMP Operates” on page 9-97.
CLI: Configuring and Displaying IGMP
IGMP Commands Used in This Section
For a listing of the full CLI command set, including syntax and options, see
the CLI command reference available on the HP ProCurve website at:
http://www.hp.com
show ip igmp configuration page 9-94
ip igmp page 9-95
high-priority-forward page 9-96
auto <[ethernet] <port-list> page 9-96
blocked <[ethernet] <port-list> page 9-96
forward <[ethernet] <port-list> page 9-96
querier page 9-97
show ip igmp See “IP Multicast (IGMP) Status” on page 10-17
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