R3102-R3103-HP 6600/HSR6600 Routers IP Multicast Configuration Guide

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Configuring multicast forwarding on a downstream interface
Typically, to avoid duplicate multicast flows, only queriers can forward multicast traffic. On IGMP proxy
devices, a downstream interface must be a querier in order to forward multicast traffic to downstream
hosts. If the interface has failed in the querier election, you must manually enable multicast forwarding on
this interface.
On a multi-access network with more than one IGMP proxy device, you cannot enable multicast
forwarding on any other non-querier downstream interface after one of the downstream interfaces of
these IGMP proxy devices has been elected as the querier. Otherwise, duplicate multicast flows might be
received on the multi-access network.
To enable multicast forwarding on a downstream interface
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Enable multicast forwarding on
a non-querier downstream
interface.
igmp proxying forwarding Disabled by default.
Displaying and maintaining IGMP
Task Command Remarks
Display IGMP group information.
display igmp [ all-instance |
vpn-instance vpn-instance-name ]
group [ group-address | interface
interface-type interface-number ]
[ static | verbose ] [ | { begin |
exclude | include }
regular-expression ]
Available in any view.
Display the Layer 2 port
information of IGMP groups
(available only on the
6604/6608/6616 router).
display igmp group port-info [ vlan
vlan-id ] [ slot slot-number ]
[ verbose ] [ | { begin | exclude |
include } regular-expression ]
Available in any view.
Display information about the hosts
tracked by IGMP on an interface.
display igmp host interface
interface-type interface-number
group group-address [ source
source-address ] [ | { begin |
exclude | include }
regular-expression ]
Available in any view.
Display information about the hosts
tracked by IGMP on the Layer 2
ports (available only on the
6604/6608/6616 router).
display igmp host port-info vlan
vlan-id group group-address
[ source source-address ] [ vlan
vlan-id ] [ slot slot-number ] [ |
{ begin | exclude | include }
regular-expression ]
Available in any view.