R2511-HP MSR Router Series IP Multicast Configuration Guide(V5)

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• If only IGMP is enabled on the router, or if both IGMP and PIM are enabled on the router, the router
does the following:
{ Maintains dynamic member ports or dynamic router ports according to IGMP packets
{ Maintains dynamic router ports according to PIM hello packets
• If only PIM is enabled on the router, the following occur:
{ The router broadcasts IGMP messages as unknown messages in the VLAN.
{ After receiving a PIM hello message, the router maintains the corresponding dynamic router
port.
• If IGMP is disabled on the router, one of the following occurs:
{ If PIM is disabled, the router deletes all its dynamic member ports and dynamic router ports.
{ If PIM is enabled, the router deletes only its dynamic member ports but not its dynamic router
ports.
NOTE:
On a router with Layer-3 multicast routing enabled, use the display igmp group port-info command to
v
iew Layer-2 port information.
• If PIM is disabled on the router, one of the following occurs:
{ If IGMP is disabled, the router deletes all its dynamic router ports.
{ If IGMP is enabled, the router maintains all its dynamic member ports and dynamic router ports.