Avaya Configuring IP Multicasting and Multimedia Services Bedienungsanleitung Seite 182

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Configuring IP Multicasting and Multimedia Services
5-8
117355-D Rev 00
Enabling Multicast Migration Between MOSPF
and Nonmulticast Interfaces
When you globally configure MOSPF, all interfaces running OSPF can receive
multicast packets. Remember that IGMP must be configured for all MOSPF
interfaces.
Forwarding Multicast Traffic from a Nonmulticast Interface to an
MOSPF Interface
To forward multicast packets from a nonmulticast, IGMP static configured
interface to an MOSPF configured interface:
Configure the multicast router as an autonomous system boundary router
(ASBR).
Set the IGMP static forwarding policy for the MOSPF interface with the
forwarding mode set to “static to dynamic.”
Configure the inbound interfaces (using the In Circuits parameter) in the
IGMP static forwarding policy.
Set the IGMP interface parameter Static Forward Cache Lifetime to an
appropriate value on the IGMP configured interface (a typical value for
MOSPF is 600).
Enable the Multicast Downstream IGMP Relay parameter in the MOSPF
global configuration. This setting allows the source network from which the
packet is received to be advertised as multicast-capable, so that the next-hop
router in the multicast cloud will not drop the packet because of an unknown
source network.
Forwarding Multicast Traffic from an MOSPF Interface to a
Nonmulticast Interface
To forward multicast packets from an MOSPF configured interface to a
nonmulticast, IGMP static configured interface:
Set the IGMP static forwarding policy for the MOSPF interface with the
forwarding mode set to “dynamic to static.”
Configure the outbound interfaces in the IGMP static forwarding policy.
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